FreeCalypso > hg > fc-magnetite
annotate doc/Leonardo-target @ 686:59f07d67eb45
luna target split into luna1 and luna2
luna1 is FC Luna based on iWOW DSK v4.0 or v5.0 motherboard
luna2 is FC Luna based on FC Caramel2 MB
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 12 Oct 2020 18:51:24 +0000 |
parents | edaceb78719a |
children |
rev | line source |
---|---|
626
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
1 TI's primary development platform for TCS211 firmware was D-Sample - see our |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
2 D-Sample article for explanation of our current limited support for that target |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
3 in FC Magnetite - but they also had another platform called Leonardo. The |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
4 primary difference is the RF section: D-Sample had Clara RF (the one for which |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
5 we lack support), whereas Leonardo was TI's reference platform for Rita RF and |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
6 for the complete Calypso+Iota+Rita chipset. Another major difference is that |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
7 D-Sample was a single stable platform, whereas Leonardo was made in a |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
8 bewildering assortment of different variants. |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
9 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
10 We (FreeCalypso core team) never succeeded in getting our hands on a real |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
11 TI-made Leonardo board of any variant, but we do have a Leonardo build target |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
12 in FC Magnetite for two reasons: |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
13 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
14 1) Adding this build target was trivial: our starting hw target for which we |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
15 got our original starting-point fw was Openmoko's embedded GSM/GPRS modem, |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
16 and that modem is a very close derivative of Leonardo. The only firmware- |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
17 affecting diff between Leonardo and OM's modem is FIC/OM's reshuffling of |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
18 TSPACT control lines for their triband RFFE; producing a build configuration |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
19 with these TSPACT control signals put back into their original Leonardo |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
20 arrangement became trivial once our reconstruction of tpudrv12.c from |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
21 disassembly of tpudrv12.obj reached production quality. |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
22 |
634
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
23 2) At the end of 2019 we discovered a certain modem module which we call Tango, |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
24 and this Tango module is essentially a mass-produced version of TI's Leonardo |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
25 core. Tango is just the core of Leonardo, without any peripherals, thus a |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
26 proper fw build target for any given Tango-based platform is going to be a |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
27 little different from Leonardo in terms of GPIO and other peripheral config |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
28 (see our tangomdm target), but initially we ran our Magnetite-Leonardo fw |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
29 (built for target leonardo) on our Caramel board - it runs just fine except |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
30 for GPIO config being slightly wrong, leaving a few GPIO lines floating. |
626
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
31 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
32 Supported Leonardo variants |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
33 =========================== |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
34 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
35 RF bands: there were several Leonardo variants with full quadband RF using Epcos |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
36 M034F FEM, and there were several more variants with artifically restricted RF, |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
37 using a dual-band/single-region FEM and supporting only the two EU bands. The |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
38 two versions should be firmware-compatible according to our available schematics |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
39 (the same TSPACT signals are used for Tx control), thus our Magnetite-Leonardo |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
40 fw should run on any Leonardo variant that matches any of our known schematic |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
41 versions at least in the principal aspects. |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
42 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
43 Flash memory: our Magnetite-Leonardo fw supports the following flash chips for |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
44 FFS: |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
45 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
46 4 MiB: Fujitsu MBM29DL320FB or MBM29DL320FT |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
47 8 MiB: Am29DL640G or its Fujitsu equivalent, or any MCP containing this flash |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
48 16 MiB: Spansion PL129J or its AMD predecessor, second bank on nCS2 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
49 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
50 If anyone finds a Leonardo variant with some other flash, it may not be |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
51 supported out of the box - but our included FFS configs for the Leonardo target |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
52 come directly from TI's original TCS211 version (it is highly unlikely that OM |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
53 changed anything other than adding their Samsung flash), thus we support |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
54 everything that TI's own TCS211 supported out of the box. |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
55 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
56 Memory size limits |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
57 ================== |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
58 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
59 The linker script template we use for target leonardo has memory region size |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
60 limits set as follows: 8 MiB of flash, 2 MiB of XRAM and 512 KiB of IRAM. If |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
61 you are working with a Leonardo or Leonardo-compatible board that has smaller |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
62 flash or XRAM, or has a Calypso Lite chip with only 256 KiB of IRAM, then you |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
63 have to manually ensure that you stay within your actual memory limits, as you |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
64 won't get a failing link unless you exceed the larger linker script limits. |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
65 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
66 If you are building a modem-only fw configuration (l1reconst or hybrid), it |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
67 will fit into under 3 MiB of flash (fitting into a 4 MiB flash chip together |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
68 with FFS), 512 KiB of XRAM and 256 KiB of IRAM, so you are safe unless you are |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
69 going to add a lot of your own code or data space. But if you are going to |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
70 build a UI-enabled fw config (2092 or hybrid-ui), then you will need at least |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
71 an 8 MiB flash chip (won't fit into a 4 MiB chip together with FFS) and at least |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
72 1 MiB of XRAM. So far all of our configs fit into 256 KiB of IRAM. |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
73 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
74 Different Calypso chip versions |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
75 =============================== |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
76 |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
77 If you specify the build target as just leonardo, your fw will be configured |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
78 and built for the leonardo-dsp36 target. If you actually need leonardo-c05b or |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
79 leonardo-dsp34 because your board has an older Calypso chip version on it, then |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
80 you will need to specify the build target as just stated - see the |
41238a8e140c
Leonardo target documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
81 Calypso-version-override article. |
630
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
82 |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
83 Calypso GPIO 2 configuration |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
84 ============================ |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
85 |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
86 On TI's C-Sample and D-Sample boards Calypso GPIO 2 is wired to serve as the DCD |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
87 output for the MODEM UART (Calypso device as DCE), and our FC Magnetite firmware |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
88 drives it as such on D-Sample, FCDEV3B and GTM900 targets. But this same config |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
89 does NOT apply to Leonardo: on the latter boards GPIO 2 is wired in a way that |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
90 requires it to be configured as an input to Calypso, not an output. |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
91 |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
92 TI's TCS211 firmware had this Leonardo GPIO 2 situation handled in a very |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
93 bizarre manner: the main GPIO init code in AI_InitIOConfig() in armio.c made no |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
94 differentiation between D-Sample and Leonardo and configured GPIO 2 as an |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
95 output, then the init code in uartfax.c did the same setup again, but at the |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
96 end of the Init_Serial_Flows() function in the init module (which we only got |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
97 as init.obj, with init.c censored out) they inserted a bit of code that switches |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
98 GPIO 2 to be an input. What a mess. |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
99 |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
100 Our handling of this GPIO 2 situation in FC Magnetite is much cleaner: we have |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
101 put an #ifndef CONFIG_TARGET_LEONARDO around the AI_ConfigBitAsOutput(2) call |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
102 in AI_InitIOConfig() so this GPIO line never becomes an output in the first |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
103 place, and our targets/leonardo.h configuration header defines |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
104 UARTFAX_CLASSIC_DTR_DCD to 0 on this target, disabling that code in the |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
105 uartfax.c driver. |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
106 |
634
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
107 This peculiar GPIO 2 situation applies only to real Leonardo boards, not to |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
108 Tango modems: a custom design using a Tango module can use this GPIO line for |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
109 anything, but on Caramel boards it drives RS-232 DCD like on D-Sample and thus |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
110 should be configured as a Calypso output. |
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
111 |
630
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
112 Other GPIO and multifunction pins |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
113 ================================= |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
114 |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
115 Our Magnetite-Leonardo fw is unchanged from TI's TCS211 original in that GPIO0, |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
116 TSPDI/GPIO4 and DSR_MODEM/LPG pins are left configured as inputs, even though |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
117 the schematics we've got show GPIO0 as an output and the other two pins as |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
118 unconnected, in which case they should also be configured as outputs in order |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
119 to not float. We are leaving this aspect unchanged currently because this |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
120 Magnetite-Leonardo fw build target is really just a reference for practically |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
121 non-existent hw, and given the unknown of what other Leonardo variants may have |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
122 existed once beyond our known schematics, we would rather leave a few floating |
b639f7ab0007
Leonardo GPIO 2 fix
Mychaela Falconia <falcon@freecalypso.org>
parents:
626
diff
changeset
|
123 inputs than risk causing a driver conflict on some unknown board. |
634
6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
Mychaela Falconia <falcon@freecalypso.org>
parents:
630
diff
changeset
|
124 |
678
edaceb78719a
doc/Leonardo-target: Tango unused Calypso signals update
Mychaela Falconia <falcon@freecalypso.org>
parents:
634
diff
changeset
|
125 In the case of Tango these 3 just-mentioned Calypso signals (as well as |
edaceb78719a
doc/Leonardo-target: Tango unused Calypso signals update
Mychaela Falconia <falcon@freecalypso.org>
parents:
634
diff
changeset
|
126 BCLKX/GPIO6) have been confirmed to be unconnected at their Calypso ball pads |
edaceb78719a
doc/Leonardo-target: Tango unused Calypso signals update
Mychaela Falconia <falcon@freecalypso.org>
parents:
634
diff
changeset
|
127 (not brought out externally, not used internally for anything, not tied or |
edaceb78719a
doc/Leonardo-target: Tango unused Calypso signals update
Mychaela Falconia <falcon@freecalypso.org>
parents:
634
diff
changeset
|
128 pulled to either GND or V-IO), thus we configure them as dummy outputs, |
edaceb78719a
doc/Leonardo-target: Tango unused Calypso signals update
Mychaela Falconia <falcon@freecalypso.org>
parents:
634
diff
changeset
|
129 eliminating floating inputs. |