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tchtools/fc-vm2hex.c: update header comment for new situation
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 28 Dec 2022 08:41:57 +0000
parents a43c5dc251dc
children 8cf7d41f2821
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1 FreeCalypso User Phone Tools are a new software addition to the FreeCalypso
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2 family. These tools are programs that run on a Unix host computer such as a
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3 GNU/Linux PC or laptop and communicate with a FreeCalypso phone or modem via
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4 the standard AT command interface, rather than any of the formerly proprietary
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5 interfaces specific to TI's internal architecture. The following tools are
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6 currently available:
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7
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8 fcup-at Issues an arbitrary AT command given on the command line.
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9
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10 fcup-settime Issues AT+CCLK command to the target to set its clock to the
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11 host computer's notion of local time.
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12
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13 fcup-smdump Retrieves a dump of SMS records (received, sent or stored
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14 messages) from the FC device's SMS storage (currently SIM
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15 storage; ME storage may be implemented in the future),
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16 optionally deleting them from the severely space-limited
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17 SIM/ME storage afterward.
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18
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19 fcup-smsend* Tools for sending outgoing SMS from a host computer through a
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20 FreeCalypso phone or modem and/or writing such outgoing SMS
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21 into the FC device's SMS storage.
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22
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23 fcup-smwrite Debug and development tool: writes arbitrary message records
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24 into the FC device's SMS storage (currently SIM storage) in any
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25 of the possible 4 states, with arbitrary incoming or outgoing
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26 SMS PDU content.
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27
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28 Because these tools communicate with the target via standards-defined AT
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29 commands, in theory they ought to work with any AT-command-speaking 3GPP phone
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30 or modem and not just our own FreeCalypso. However, experience has shown that
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31 in the case of the common proprietary implementations, practice does not match
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32 theory: when I (Mychaela) tried these same AT commands against a random
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33 off-the-shelf proprietary modem (Huawei E303 USB stick modem for 3G), the
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34 following problems were seen:
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35
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36 * The essential AT+CMGL=4 command for retrieving the full set of SMS records
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37 from SIM storage in PDU mode appears to be broken: all I got was a hang.
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38 Its text mode counterpart AT+CMGL="ALL" produces incomplete output.
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39
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40 * Qualcomm/Huawei's implementation of the AT command interface does not allow
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41 AT+CSCS to be set to "HEX"; our fcup-smdump implementation uses this setting
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42 so that the phonebook names returned along with SMS PDUs in the +CMGL
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43 responses can be parsed reliably no matter what weird characters they might
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44 contain.
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45
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46 * Setting AT+CSCS to "8859-1" is not supported either; this setting is used by
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47 our fcup-smsend and fcup-smsendmult tools when sending in text mode.
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48
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49 * Sending outgoing SMS with fcup-smsend in PDU mode (which does not touch
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50 AT+CSCS) works in that the message goes out, but the tool complains afterward
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51 because the echo after the ^Z is different from what our tools expect.
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52
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53 Because of these quirks, our FC User Phone Tools officially work only with our
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54 own FreeCalypso phones and modems, and are not expected to work against various
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55 proprietary implementations. Let us not forget that the broken and buggy nature
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56 of the common proprietary implementations is the very reason why we need
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57 FreeCalypso in the first place.
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58
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59 Target interface options
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60 ========================
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61
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62 Our fcup-* tools can communicate with the AT-command-speaking target in one of
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63 two ways:
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64
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65 * The default is the standard AT command interface over a dedicated UART. As
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66 of this writing, the only FreeCalypso device that provides a full-featured AT
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67 command interface of this kind is our FCDEV3B modem, but the ultimate goal of
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68 the project is to build our own end user phone handset (a Libre Dumbphone)
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69 that will also provide a full-featured AT command interface on its USB port
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70 via a built-in CP2102 or FT232R chip.
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71
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72 * As a dirty hack, one can run FreeCalypso GSM fw on some alien hw targets,
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73 currently Motorola C1xx and Pirelli DP-L10. In this hacked-up configuration
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74 there is no dedicated UART available for a standard AT command interface, but
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75 there is a hack that allows a limited subset of AT commands to be passed over
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76 the RVTMUX binary packet interface provided by the running FreeCalypso GSM fw.
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77 Our fcup-* tools can work with this alternate target interface option and
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78 thereby support these crippled targets.
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79
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80 The AT-over-RVTMUX mechanism was originally invented back in 2015 as a
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81 development aid, and was never intended for production use or to support any
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82 kind of end user functionality. One of the limitations of its original
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83 incarnation was that the strings that are sent to ATI via this interface were
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84 limited to 254 characters, whereas sending or writing SMS in hex format
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85 requires longer strings. As of early 2019, this limitation has been lifted:
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86 our Magnetite and Selenite firmwares from 20190109 onward support an extended
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87 version of our AT-over-RVTMUX hack that allows longer strings to be sent in
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88 pieces, and the present version of our FC User Phone Tools suite will send the
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89 strings it generates via this extended mechanism whenever they exceed the old
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90 254 character limit. The new mechanism works correctly starting with the
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91 20190128 firmware release for modem products and the 20190129 fw release for
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92 Mot C1xx phones, thus when the present version of FC User Phone Tools is used
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93 to communicate with our current firmwares, both target interface options provide
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94 equivalent functionality on all supported targets.
388
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95
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96 All fcup-* tools take the following common command line options for selecting
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97 the AT command target interface:
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98
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99 -B baud Valid only when -p is also given; selects a different baud rate
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100 than the default 115200 bps.
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101
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102 -n Dry run debug mode with no target interface at all: the AT
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103 commands which would otherwise be sent to the target are simply
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104 printed on stdout.
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105
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106 -p ttyport Names the serial port to be used to talk to the target.
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107
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108 -R Use the AT-over-RVTMUX interface instead of the standard AT
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109 command interface over a dedicated UART.
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110
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111 -X program Use the specified external program as the AT target
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112 communication back-end; read the source code for the details.
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113
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114 -R and -p options interact as follows:
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115
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116 Neither -R The standard dedicated AT command interface is used;
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117 nor -p FC_GSM_DEVICE= environment variable needs to be set
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118 to point to the serial port.
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119
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120 -p only The standard dedicated AT command interface is used;
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121 the serial port is named with the -p option.
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122
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123 -R only AT-over-RVTMUX interface is used; the fcup-* tool connects
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124 to an already running rvinterf process.
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125
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126 -R and -p AT-over-RVTMUX interface is used; a new rvinterf process
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127 is launched to talk RVTMUX on the specified serial port.
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diff changeset
128
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diff changeset
129 Retrieving and decoding stored SMS
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diff changeset
130 ==================================
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parents:
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131
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diff changeset
132 As of this writing, our current FreeCalypso GSM firmware supports only SIM
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parents:
diff changeset
133 storage for SMS, i.e., there is no working mechanism currently for storing SMS
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parents:
diff changeset
134 records (received and sent messages) in the phone's or modem's own flash file
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parents:
diff changeset
135 system. The capacity of this SIM SMS storage is determined by the SIM issuer,
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parents:
diff changeset
136 but it is typically quite limited, on the order of 20 to 30 messages.
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parents:
diff changeset
137
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parents:
diff changeset
138 The model adopted for FreeCalypso is that incoming (and possibly saved outgoing)
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parents:
diff changeset
139 messages initially accumulate in the SIM storage as they come in, and then the
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parents:
diff changeset
140 user periodically transfers them to her larger host computer, simultaneously
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
141 deleting them from the SIM storage to reclaim the limited space. The retrieval
3d45660f78f0 doc/User-phone-tools article written
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parents:
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142 of stored SMS from FreeCalypso GSM devices is accomplished with our fcup-smdump
450
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parents: 449
diff changeset
143 utility; like all SMS operations with the current tools+firmware combination,
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parents: 449
diff changeset
144 this operation works exactly the same whether the FC GSM device offers a full-
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parents: 449
diff changeset
145 featured AT command interface or only AT over RVTMUX. SMS retrieval is always
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parents: 449
diff changeset
146 done in PDU mode, and the output from fcup-smdump contains raw SMS PDUs in the
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Mychaela Falconia <falcon@freecalypso.org>
parents: 449
diff changeset
147 form of long hex strings. A separate utility called sms-pdu-decode then does
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
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parents: 449
diff changeset
148 what its name says.
388
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149
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parents:
diff changeset
150 The intended mode of usage is something like this:
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parents:
diff changeset
151
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parents:
diff changeset
152 fcup-smdump -d >> long-term-sms-log
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parents:
diff changeset
153
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parents:
diff changeset
154 The -d option to fcup-smdump tells it to delete the retrieved messages from the
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parents:
diff changeset
155 SIM or future ME storage; this option should only be used when the output is
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parents:
diff changeset
156 redirected into some kind of longer-term storage. In the above model the file
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parents:
diff changeset
157 named long-term-sms-log becomes what its name says as new messages retrieved
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parents:
diff changeset
158 from the FC GSM device get added to it; the format will look like this:
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parents:
diff changeset
159
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 Received message:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 XXXXXX...
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 Received message:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 XXXXXX...
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 Sent message:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 XXXXXX...
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 Stored unsent message:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 XXXXXX...
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 Received message:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 XXXXXX...
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 Each of the "XXXXXX..." lines will be a long hex string giving an SMS PDU. The
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
176 idea is that the complete record of all received and sent messages should be
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 stored on the user's big computer in raw PDU form, rather than decoded, and the
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parents:
diff changeset
178 decoding utility sms-pdu-decode should be invoked by the user (with the message
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 log file as input) as needed for reading these messages.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 The message decoding utility sms-pdu-decode does its best to decode and show
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 everything without dropping any bits: in addition to the actual decoded message
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 characters and the From/To address (the "end user" content of the message), it
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
184 decodes and shows the SC address, the first octet, the MR octet for outgoing
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 messages, PID and DCS octets, the SC timestamp or the validity period fields,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 and the UDH bytes if present. However, some bits can still be lost in the
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 decoding, which is why it is important to archive messages in the raw PDU form:
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parents:
diff changeset
188
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 * Padding bits used to round the From/To address and septet-based user data to
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 an octet boundary and to round any UDH to a septet boundary are not decoded.
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parents:
diff changeset
191
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 * If the user data portion of the message is 8-bit or compressed data (per the
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 DCS octet), it is shown as a raw hex dump, which is lossless, but if it is
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
194 GSM7 or UCS-2 text (GSM 03.38 character encodings), the characters are
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parents:
diff changeset
195 converted to the user's character set (plain ASCII only by default) for
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 display, and some characters may not be displayable.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 Character sets and encodings
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 ----------------------------
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 By default, sms-pdu-decode only emits 7-bit ASCII characters in its output; any
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 GSM7 or UCS-2 characters which fall outside of this plain ASCII repertoire are
805
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
203 converted into backslash escapes. This conservative default behaviour can be
388
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parents:
diff changeset
204 modified as follows:
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
205
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 -e option extends the potential output character repertoire from 7-bit ASCII to
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 8-bit ISO 8859-1. Any 8859-1 high characters are emitted as single bytes,
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 i.e., are NOT encoded in UTF-8 - this option is intended for non-UTF-8
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 environments.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210
805
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
211 -u option extends the potential output character repertoire to all of Unicode,
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
212 and changes the output encoding to UTF-8.
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
213
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
214 Regardless of whether the source message character set is GSM7 or UCS-2 and
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
215 irrespective of -e or -u options, any backslash characters are always escaped
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
216 as \\, and any CR characters are represented as \r. Additional backslash
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
217 escape encodings depend on the source message character set:
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
218
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
219 * If the source message character set is GSM7, the following additional
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
220 backslash escapes can be emitted:
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
221
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
222 - In the absence of -u option, the Euro currency symbol is converted to \E;
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
223
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
224 - Any GSM7 escape characters (0x1B) that aren't part of a valid escape
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
225 sequence for [\]^ or {|}~ or \E are represented as \e;
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
226
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
227 - Any GSM7 characters that either can't be represented in the output character
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
228 set (ASCII or ISO 8859-1) or are outright invalid per GSM 03.38 are
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
229 represented as \xX, where xX is the original GSM7 code point in 2-digit
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
230 hexadecimal form between 00 and 7F;
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
231
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
232 - Invalid GSM7 escape sequences are emitted as \e\xX.
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
233
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
234 * If the source message character set is UCS-2, the following additional
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
235 backslash escapes can be emitted:
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
236
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
237 - Invalid UCS-2 characters falling onto control character code points are
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
238 emitted as \u00XX;
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
239
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
240 - UCS-2 characters that can't be represented in ASCII or ISO 8859-1 (when
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
241 running without -u option) are emitted as \uXXXX;
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
242
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
243 - If UTF-16 surrogate pairs are detected in the input, the encoded high-plane
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
244 Unicode character is reconstructed and emitted as \UXXXXXX in the absence
a43c5dc251dc doc/User-phone-tools: new sms-pdu-decode backslash escapes
Mychaela Falconia <falcon@freecalypso.org>
parents: 450
diff changeset
245 of -u option, or as the appropriate UTF-8 byte sequence with -u.
388
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
246
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 -h option causes the user data portion of every message to be displayed as a
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 raw hex dump; in the case of GSM7-encoded messages, this hex dump shows the
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 unpacked septets.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 Composing and sending outgoing SMS
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 ==================================
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
253
450
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
Mychaela Falconia <falcon@freecalypso.org>
parents: 449
diff changeset
254 When used in the default PDU mode (which now works on all targets with our
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
Mychaela Falconia <falcon@freecalypso.org>
parents: 449
diff changeset
255 current firmware and tools), the primary SMS sending/writing tool fcup-smsend
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256 offers the following capabilities:
388
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257
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258 * Sending outgoing messages in either GSM7 or UCS-2 encoding;
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259 * Sending either single or long (concatenated) SMS;
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260 * Message body input in ASCII, ISO 8859-1 or UTF-8;
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261 * Message body input either on the command line or on stdin;
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262 * Any messages sent through this tool (single or concatenated) may be
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263 multiline, i.e., may contain embedded newlines;
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diff changeset
264 * Messages sent in GSM7 encoding can contain ASCII characters [\]^ and {|}~
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265 - the tool is smart enough to do the necessary escape encoding.
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266
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diff changeset
267 The default and preferred AT command interface mode for sending/writing SMS is
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diff changeset
268 PDU mode, which works great when the GSM device provides a proper AT command
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diff changeset
269 interface. However, when a message of maximum or near-maximum length is being
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270 submitted to the modem in PDU mode, the hex string that needs to be sent is
450
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diff changeset
271 quite long, and at the time when our FC User Phone Tools were first designed
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diff changeset
272 and written, our AT-over-RVTMUX mechanism could not handle such long strings.
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273 Because we sought to have at least limited SMS sending and writing support for
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diff changeset
274 crippled Motorola and Pirelli targets, we also implemented text mode support in
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275 fcup-smsend and fcup-smsendmult, enabled with the -t option. In this text (-t)
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276 mode the following restrictions apply:
388
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277
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278 * Only single SMS can be sent, not concatenated;
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279 * Only GSM7-encoded messages can be sent, not UCS-2;
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280 * No multiline messages can be sent, i.e., no newlines in the message body;
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281 * ASCII characters [\]^ and {|}~ won't be sent correctly - GSM 07.05 text mode
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282 drops them.
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283
450
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284 Now that we have extended our AT-over-RVTMUX mechanism to support longer strings
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285 and gained full support for PDU mode on all targets, the above -t mode is no
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parents: 449
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286 longer necessary for any use case, as the default PDU mode is a proper superset
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parents: 449
diff changeset
287 in functionality. However, support for this -t mode has been retained, as
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diff changeset
288 removing software functionality for no good reason is not the way of FOSS.
388
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289
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290 The invokation syntax is as follows:
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291
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292 fcup-smsend [options] dest-addr [message]
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293
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294 The destination address must be given on the command line; the address digits
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295 may be optionally followed by a comma and an address type byte, either decimal
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diff changeset
296 or hexadecimal with 0x prefix. The default address type is 0x91 if the number
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parents:
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297 begins with a '+' or 0x81 otherwise. If the message body is given on the
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parents:
diff changeset
298 command line, it must be given as a single argument; if no message body argument
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parents:
diff changeset
299 is given, the message body will be read from stdin. Any trailing newlines are
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
300 stripped before SMS encoding.
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diff changeset
301
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diff changeset
302 The following options are supported, in addition to the common target interface
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parents:
diff changeset
303 options listed earlier:
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diff changeset
304
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diff changeset
305 -c Enables concatenated SMS. Concatenated SMS will be sent only
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parents:
diff changeset
306 if the message body exceeds 160 GSM7 or 70 UCS-2 characters,
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parents:
diff changeset
307 otherwise plain SMS will be sent whether -c is given or not -
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
308 but the -c option enables the possibility of sending
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
309 concatenated SMS.
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diff changeset
310
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diff changeset
311 -C refno Enables concatenated SMS like -c, but also explicitly sets the
3d45660f78f0 doc/User-phone-tools article written
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diff changeset
312 concatenated SMS reference number to be used. The number can
3d45660f78f0 doc/User-phone-tools article written
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diff changeset
313 be either decimal or hexadecimal with 0x prefix.
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parents:
diff changeset
314
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diff changeset
315 -q Concatenated SMS quiet mode. If -c is given without -q, the
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parents:
diff changeset
316 tool prints a message on stdout indicating whether the message
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parents:
diff changeset
317 was sent as single or concatenated, and in how many parts.
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diff changeset
318 -q suppresses this additional output.
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diff changeset
319
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diff changeset
320 -t Use text mode instead of PDU mode on the AT command interface.
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parents:
diff changeset
321 This option is incompatible with -c and with -U, and introduces
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
322 other restrictions listed above.
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diff changeset
323
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diff changeset
324 -u By default, if the message body input contains any 8-bit
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parents:
diff changeset
325 characters, they are interpreted as ISO 8859-1. With -u they
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parents:
diff changeset
326 are interpreted as UTF-8 instead. This option is only relevant
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
327 for GSM7 output encoding, and it is implemented by converting
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
328 the input first from UTF-8 to 8859-1, and then from 8859-1 to
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parents:
diff changeset
329 GSM7 - thus all UTF-8 input characters must fall into the
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
330 8859-1 repertoire, and it is not currently possible to send
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
331 GSM7-encoded messages containing the few Greek letters or the
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
332 Euro currency symbol allowed by GSM 03.38 encoding.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
333
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
334 -U Send message in UCS-2 encoding instead of GSM7. Any 8-bit
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
335 characters in the message body input are interpreted as UTF-8,
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
336 and the entire Basic Multilingual Plane of Unicode is allowed.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
337
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diff changeset
338 -w By default the outgoing message is sent out on the GSM network
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parents:
diff changeset
339 with the AT+CMGS command. With this -w option, the message is
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parents:
diff changeset
340 first written into SIM or future ME SMS storage with AT+CMGW,
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
341 then sent out on the GSM network with AT+CMSS.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
342
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
343 -W Write only, not send: the message is written into storage with
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
344 AT+CMGW and no further action is taken. The modem's +CMGW:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
345 responses with message storage indices are forwarded to stdout.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
346 With this option the destination address argument can be a null
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
347 string or omitted altogether.
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parents:
diff changeset
348
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
349 Concatenated SMS reference numbers
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parents:
diff changeset
350 ----------------------------------
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parents:
diff changeset
351
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diff changeset
352 Every concatenated SMS transmission needs a reference number, and this number
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
353 needs to increment from one concatenated SMS to the next, to help message
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
354 recipients sort out which is which. If the reference number is not given
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
355 explicitly with -C, fcup-smsend creates (opens with O_RDWR|O_CREAT) a file
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parents:
diff changeset
356 named .concat_sms_refno in the invoking user's $HOME directory; automatically
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
357 incrementing reference numbers are maintained in this file. The initial seed
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
358 is an XOR of all bytes of the current time returned by gettimeofday(2),
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
359 followed by simple linear incrementing; these reference numbers do not need to
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
360 be random in any kind of cryptographically secure sense.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
361
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
362 fcup-smsendmult
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
363 ===============
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
364
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
365 As an alternative to sending concatenated SMS, one can use the fcup-smsendmult
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
366 utility to send several single (no UDH) messages in one batch. This utlity
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
367 supports both text and PDU modes (PDU mode is still the preferred default when
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
368 it can be used), and when PDU mode is used, it supports both GSM7 and UCS-2
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parents:
diff changeset
369 output encodings just like fcup-smsend. The messages to be sent are read from
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
370 stdin, and each input line produces a new message.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
371
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
372 The entire batch of messages can be sent to a single recipient, or each message
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parents:
diff changeset
373 in the batch can have its own individual destination address. If the
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
374 destination address is given on the command line, each input line read from
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
375 stdin is just a message body; if no destination address is given on the command
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
376 line, each input line must have the following format:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
377
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
378 <dest addr><white space><message body>
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
379
3d45660f78f0 doc/User-phone-tools article written
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parents:
diff changeset
380 -t, -u, -U, -w and -W command line options are unchanged from fcup-smsend.
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parents:
diff changeset
381
450
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Mychaela Falconia <falcon@freecalypso.org>
parents: 449
diff changeset
382 This fcup-smsendmult method of sending batched SMS was originally envisioned as
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
Mychaela Falconia <falcon@freecalypso.org>
parents: 449
diff changeset
383 an alternative to concatenated SMS for crippled hw targets that couldn't support
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
Mychaela Falconia <falcon@freecalypso.org>
parents: 449
diff changeset
384 sending SMS in PDU mode, but that limitation has now been lifted. Because we
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
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parents: 449
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385 do not remove already-implemented functionality for no good reason, the tool
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386 currently remains in search of new potential use cases.
388
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387
3d45660f78f0 doc/User-phone-tools article written
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388 fcup-smsendpdu
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389 ==============
3d45660f78f0 doc/User-phone-tools article written
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390
3d45660f78f0 doc/User-phone-tools article written
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391 This utility sends out SMS PDUs that have been prepared externally; it only
450
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
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parents: 449
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392 works in PDU mode - originally it was limited to high-end FreeCalypso hardware
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
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parents: 449
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393 with a full AT command interface, but now we've got PDU mode working on all
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
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parents: 449
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394 targets. The PDUs to be sent out are read from stdin, one long hex string PDU
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parents: 449
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395 per line; one can send either a single message or a batch. Because the
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
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parents: 449
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396 destination address and all content details are encoded in the PDU, the tool
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parents: 449
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397 does not care if the messages are going to the same recipient or to different
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parents: 449
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398 recipients, nor does it care if they constitute a concatenated SMS transmission
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parents: 449
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399 or not. -w and -W options work the same way as in fcup-smsend and
b5235f8240b9 doc/User-phone-tools: update for SMS PDU mode working on all targets
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400 fcup-smsendmult.
388
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Mychaela Falconia <falcon@freecalypso.org>
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401
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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402 fcup-smwrite
3d45660f78f0 doc/User-phone-tools article written
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403 ============
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
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404
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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405 This utility is a debug and development tool; it differs from fcup-smsendpdu in
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
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406 the following ways:
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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407
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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408 * fcup-smsendpdu can send messages out with AT+CMGS, write them into memory
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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409 with AT+CMGW, or do a write-then-send sequence (-w option) with AT+CMGW
3d45660f78f0 doc/User-phone-tools article written
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410 followed by AT+CMSS. fcup-smwrite only issues AT+CMGW commands.
3d45660f78f0 doc/User-phone-tools article written
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411
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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412 * fcup-smwrite passes a second argument to AT+CMGW that sets the message state
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
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413 to any of the possible 4 values; fcup-smsend* -W put them in the "stored
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
414 unsent" state.
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
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415
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
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416 * The input to fcup-smsendpdu is just PDU hex strings; the input to
3d45660f78f0 doc/User-phone-tools article written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
417 fcup-smwrite needs to have the same format as fcup-smdump output in order to
3d45660f78f0 doc/User-phone-tools article written
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418 indicate what state each message should be written in.