FreeCalypso > hg > freecalypso-citrine

annotate README @ 46:38cf7fa65976

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sprintf/float.c: rounding corner case bug
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 29 Sep 2017 03:23:01 +0000
parents ef5376a04b8c
children 3ba0351942e1
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1 You are looking at the source tree for FreeCalypso Citrine, which is one of the
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2 several Calypso GSM firmware offerings developed under the FreeCalypso umbrella.
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3 The key distinguishing features of FC Citrine are:
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4
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5 * The firmware is built from full source, no blobs;
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6 * The compiler used to build the fw is gcc (free software) instead of TI's
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7 proprietary compiler;
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8 * The way in which the firmware is put together is "from the bottom up".
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9
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10 Our Citrine firmware can be built for the following targets:
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11
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12 FreeCalypso FCDEV3B
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13 Mot C11x/12x
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14 Mot C139/140
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15 Mot C155/156
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16 Openmoko GTA01/02
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17 Pirelli DP-L10
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18
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19 However, only minimal functionality is implemented so far: whichever target
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20 device you are using, it can only function as an AT-command-controlled voice+SMS
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21 pseudo-modem; because there is no UI code integrated yet, the LCD stays dark
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22 and the buttons do nothing on those target devices that have such hardware.
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23 No CSD, fax or GPRS support has been integrated yet either, and in general this
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24 Citrine firmware does NOT exhibit the level of functionality and stability
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25 offered by our production quality Magnetite fw.
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27 Please refer to the write-ups in the doc directory for instructions on how to
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28 compile and play with this firmware.
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30 Citrine vs. Magnetite
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31 =====================
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33 The following table lists the major differences between our two current
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34 FreeCalypso firmware offerings:
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36 Feature Citrine Magnetite
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38 Support for Mot/Compal All 3 subfamilies: C139/140 only
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39 targets C11x/12x, C139/140,
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40 C155/156
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42 Source/blob status Full source Still has some blobs
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44 Compiler toolchain gcc TI's proprietary
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46 GSM MS functionality Voice and SMS only Voice, SMS, CSD, fax
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47 and GPRS
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49 Overall functionality Experimental Production
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50 and quality
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51
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52 The current main focus in the FreeCalypso family of projects is on producing
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53 new Calypso-based GSM+GPRS modem products of full commercial quality and
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54 functionality, hence our primary firmware focus is currently on Magnetite.
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56 Citrine firmware is not currently receiving active new development, but it is
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57 maintained primarily for the purpose of winning users over from OsmocomBB: the
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58 limited GSM MS functionality (voice and SMS only) matches our competitor's
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59 offering, the blob-free status and the use of gcc are expected to be in line
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60 with the interests of that user population, and all 3 Mot C1xx subfamilies are
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61 supported.