SIMtrace Firmware » History » Version 11
Anonymous, 02/19/2016 10:48 PM
Restore details on how to enter the SAM-BA mode
1 | 1 | laforge | = SIMtrace Firmware = |
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2 | |||
3 | 4 | laforge | The Firmware for the AT91SAM7S device was written by reusing a lot of the code for the [http://www.openpcd.org/ OpenPCD] |
4 | RFID reader. |
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5 | 1 | laforge | |
6 | 4 | laforge | There is a {{{simtrace}}} Makefile target in the git://git.gnumonks.org/openpcd.git repository containing the latest firmware code. |
7 | |||
8 | Eventually, the OS part of OpenPCD/OpenPICC/SIMtrace will be separated. At that point, the firmware source can become |
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9 | part of simtrace.git |
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10 | |||
11 | == Building the firmware == |
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12 | |||
13 | Precondition: You need to set your PATH in a way that contains an arm-elf [wiki:toolchain], i.e. the same way that you build [wiki:GettingStarted OsmocomBB]. |
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14 | |||
15 | {{{ |
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16 | 7 | laforge | $ git clone git://git.gnumonks.org/openpcd.git |
17 | $ cd openpcd/firmware |
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18 | $ make -f Makefile.dfu BOARD=SIMTRACE |
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19 | $ make BOARD=SIMTRACE DEBUG=1 TARGET=main_simtrace |
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20 | $ cat dfu.bin main_simtrace.bin > main_simtrace.samba |
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21 | $ cd ../.. |
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22 | 4 | laforge | }}} |
23 | |||
24 | === Firmware parts === |
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25 | |||
26 | The firmware build process creates two images: |
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27 | * dfu.bin -- the sam7dfu 2nd level bootloader. It implements the USB DFU (Device Firmware Upgrade) profile. |
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28 | * main_simtrace.bin -- the actual simtrace program. To be loaded via DFU, using [http://dfu-util.gnumonks.org/ dfu-util]. |
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29 | * main_simtrace.samba -- [http://www.openpcd.org/Sam7dfu sam7dfu] + simtrace image. to be loaded via SAM-BA, using sam7utils (see below). |
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30 | |||
31 | |||
32 | 5 | laforge | === sam7utils === |
33 | 4 | laforge | |
34 | 9 | laforge | SAM-BA images contain a full NOR flash image. They can be used in case the sam7dfu bootloader was corrupted, |
35 | and can be installed either using the '''sam7''' program released by Atmel, or via JTAG based flashing. |
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36 | |||
37 | Installing firmware using SAM-BA is a bit cumbersome and requires strict adherence to a sequence of USB cable |
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38 | plugging/unplugging and jumper setting, waiting, jumper removal, etc. |
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39 | |||
40 | |||
41 | 4 | laforge | sam7utils will be used to flash the '''main_simtrace.samba''' image over SAM-BA. |
42 | {{{ |
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43 | 8 | laforge | $ sudo aptitude install libreadline-dev |
44 | $ wget http://www.openpcd.org/dl/sam7utils-0.2.1-bm.tar.bz2 |
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45 | $ tar xf sam7utils-*.tar.bz2 |
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46 | $ cd sam7utils |
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47 | $ ./configure --prefix=/usr/local |
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48 | $ make |
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49 | 4 | laforge | }}} |
50 | |||
51 | to flash the samba image using serial : |
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52 | {{{ |
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53 | 7 | laforge | $ sudo ./sam7 -l /dev/ttyUSB0 --exec set_clock --exec unlock_regions --exec "flash ../openpcd/firmware/main_simtrace.samba" |
54 | 4 | laforge | }}} |
55 | to flash the samba image using libusb : |
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56 | {{{ |
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57 | 7 | laforge | $ sudo ./sam7 --exec set_clock --exec unlock_regions --exec "flash ../openpcd/firmware/main_simtrace.samba" |
58 | 4 | laforge | }}} |
59 | |||
60 | if you want to use sam7 multiple times, remove the loaded module after each run: |
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61 | {{{ |
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62 | 7 | laforge | $ sudo rmmod sam_ba |
63 | 4 | laforge | }}} |
64 | |||
65 | 5 | laforge | ==== sam7utils for x86 ==== |
66 | 4 | laforge | |
67 | On x86, sam7utils will be compiled to communicate with the board using POSIX. |
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68 | |||
69 | The board should be attached to a node. On ubuntu 10.10, the usb device 03eb:6124 is mapped on /dev/ttyACM0 using the cdc_cam module. If not mapped, use usbserial : |
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70 | {{{ |
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71 | 7 | laforge | $ sudo rmmod usbserial |
72 | $ sudo modprobe usbserial vendor=0x03EB product=0x6124 |
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73 | 4 | laforge | }}} |
74 | |||
75 | Now replug board. It should map to /dev/ttyUSBx (use dmesg to know which). |
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76 | |||
77 | 5 | laforge | ==== sam7utils for amd64 ==== |
78 | 4 | laforge | |
79 | On amd64, sam7utils will be compiled to communicate with the board using libusb. |
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80 | |||
81 | On ubuntu 10.10 & 11.04, the usb device 03eb:6124 is mapped on /dev/ttyACMx using the cdc_cam module. |
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82 | 8 | laforge | Remove it while the board is plugged, so sam7utils is able to communicate with it (using libusb for 10.10 and serial for 11.04). |
83 | 4 | laforge | {{{ |
84 | $ sudo rmmod cdc_acm |
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85 | 6 | laforge | }}} |
86 | |||
87 | 11 | laforge | ==== Entering the SAM-BA mode ==== |
88 | The first time you flash the device, you will have to use the SAM-BA method using the main_simtrace.samba image. |
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89 | |||
90 | To put the board into SAM-BA mode, use the following steps: |
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91 | |||
92 | * unplug the board |
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93 | * short TEST to VCC (3.3V) pin using a jumper. leave PA0,PA1,PA2 unconnected. |
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94 | * power up the board |
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95 | * wait 20s |
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96 | * unplug board |
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97 | * remove jumper |
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98 | Now when the board is attached to USB, lsusb should show : |
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99 | {{{ |
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100 | Bus 002 Device 015: ID 03eb:6124 Atmel Corp. at91sam SAMBA bootloader |
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101 | }}} |
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102 | |||
103 | '''note for v1.0p boards''': sometimes the SAM-BA mode it not working. This is the case |
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104 | if the 2 LEDs are on when powering up the board while VCC and TEST are shorted. The |
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105 | reason in unknown, but there are several methods to correct this: |
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106 | |||
107 | * press the RESET button while powering up |
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108 | * touch PA0 (pin 48, on the right upper corner) with a piece of metal |
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109 | * short PA0 and PA1 (pin 48 and 47, next to ech other on the right upper corner) |
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110 | |||
111 | As soon as the LEDs go off, the SAM-BA mode is working. |
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112 | |||
113 | For more information about SAM-BA, please refer to the Atmel documentation on the AT91SAM7S component. |
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114 | |||
115 | |||
116 | |||
117 | 1 | laforge | === DFU === |
118 | 6 | laforge | |
119 | 9 | laforge | The Device Firmware Upgrade (DFU) can be used to replace the SIMtrace payload. |
120 | 6 | laforge | |
121 | To get dfu-util: |
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122 | {{{ |
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123 | 7 | laforge | $ sudo apt-get install dfu-util |
124 | 6 | laforge | }}} |
125 | 1 | laforge | |
126 | To flash the firmware: |
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127 | {{{ |
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128 | $ dfu-util -d 16c0:0762 -a0 -D ./main_simtrace.bin -R |
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129 | }}} |
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130 | 9 | laforge | |
131 | 2 | laforge | dfu-util should reset the board and use the DFU bootloader. Try the command a second time if it did not work at first. |
132 | If this still does not work, power up the board while pressing the '''BOOTLOADER''' button. |
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133 | |||
134 | == Bugs == |
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135 | 3 | laforge | |
136 | Currently there is a bug in the firmware that makes the device fail to enumerate on OSX. We provide an alternative hacked firmware until we have resolved the issue properly. |
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137 | 9 | laforge | |
138 | == Version History == |
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139 | 10 | laforge | * v0.2 Fixes ATR handling for older SIMcards. |