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annotate doc/Freerunner-Howto @ 867:c4da570dca83

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int_osx_receive_prim() in gsm-fw/gpf/osx/osx.c: there was an error in the reconstruction of this function from disassembly in the logic that implements special handling for MPHC_RXLEV_REQ messages. The code is now fixed to properly match what the binary object version does; with this fix the firmware now performs the power measurement phase correctly and the initial network registration succeeds.
author Space Falcon <falcon@ivan.Harhan.ORG>
date Sat, 16 May 2015 06:34:09 +0000
parents 4fa939eada22
children 7d3f0910aeb2
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4fa939eada22 documentation update: how to compile and flash experimental gsm-fw for gtamodem
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1 How to play with FreeCalypso GSM firmware on a Neo Freerunner
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2 =============================================================
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3
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4 Aside from the half-source leo2moko fw we produced back in 2013-10 (you can
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5 read all about that one at www.freecalypso.org/leo2moko/), we don't have a
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6 working free GSM firmware version for the Freerunner yet. What we do have
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7 currently is experimental code that can be built into an image that can be
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8 flashed into a GTA02 modem - but it doesn't really work yet.
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9
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10 If you would like to play with our experimental code on your Neo FR and maybe
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11 help us make it work, here are the instructions:
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12
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13 1. Build the firmware in the gtamodem-gsm configuration - see the Compiling
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14 document for more details;
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15
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16 2. You should get a flashImage.bin image built; now you need to flash it into
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17 your FR's modem. The serial cable method is highly recommended: the only
4fa939eada22 documentation update: how to compile and flash experimental gsm-fw for gtamodem
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18 thing you'll be able to do with our current non-working firmware is help us
4fa939eada22 documentation update: how to compile and flash experimental gsm-fw for gtamodem
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19 debug it, and the serial cable will be needed for the latter part anyway.
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20
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21 3. Run fc-loadtool the same way you would if you were flashing leo2moko;
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22
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23 4. The actual flash programming commands are a little different because the
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24 image is smaller and in a different format:
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25
4fa939eada22 documentation update: how to compile and flash experimental gsm-fw for gtamodem
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26 flash erase 0 0x160000
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27 flash program-bin 0 finlink/flashImage.bin
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28
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29 The second number in the flash erase command needs to be the size of
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30 flashImage.bin rounded up to a multiple of 64 KiB (the flash sector size in the
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31 GTA02 modem); 0x160000 is correct for the fw image size as of this writing, but
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32 please double-check it yourself before flashing. The 0 argument in the
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33 flash program-bin command is the flash offset at which the image should be
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34 programmed: it will always be 0 for FreeCalypso flashable fw images for gtamodem
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35 and other targets that have the Calypso boot ROM enabled in the hardware.
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36
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37 Once you have flashed our experimental fw into your modem, you can power-cycle
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38 the modem and see the new fw boot. You should have the serial cable connected,
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39 the serial channel enabled from the Freerunner's AP side and either rvtdump or
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40 rvinterf running on your PC or other development machine when you first power
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41 your modem up with the experimental fw in it: this way you will see whether the
4fa939eada22 documentation update: how to compile and flash experimental gsm-fw for gtamodem
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42 fw boots successfully or crashes. If it does boot without crashing (whether or
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43 not it does seems to depend on some factors which we have yet to understand),
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44 you will get an AT command interface on the other UART going to the Freerunner's
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45 AP - now go ahead and play from there. :)
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46
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47 To reflash your modem back to stable and working leo2moko aka moko12, execute
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48 the following fc-loadtool commands:
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49
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50 flash erase 0 0x230000
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51 flash program-m0 leo2moko.m0
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52
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53 (Whichever firmware image you are flashing, the flash erase command needs to
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54 cover the range of flash sectors this image will occupy. You can erase more
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55 sectors up to 0x300000, the "natural" boundary of the flash area where fw
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56 images live, but I prefer to erase only the needed number of sectors: it is
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57 both faster and imposes less wear on the flash.)