From 8f848e9b385f416f1e15c20509787ef948df73b9 Mon Sep 17 00:00:00 2001 From: Marian Buschsieweke Date: Wed, 21 Aug 2019 18:00:51 +0200 Subject: [PATCH] boards/msba2: Updated board documenation --- boards/msba2/doc.txt | 82 ++++++++++++++++++++++++++++---------------- 1 file changed, 53 insertions(+), 29 deletions(-) diff --git a/boards/msba2/doc.txt b/boards/msba2/doc.txt index 3a1589c286..20e66c1c7f 100644 --- a/boards/msba2/doc.txt +++ b/boards/msba2/doc.txt @@ -5,16 +5,15 @@ ## Overview -![MSBA2 image](https://raw.githubusercontent.com/wiki/RIOT- -OS/RIOT/images/MSBA2_photo.jpg) +![MSBA2 image](https://raw.githubusercontent.com/wiki/RIOT-OS/RIOT/images/MSBA2_photo.jpg) ## Hardware -| MCU: | LPC2387 ARM7-TDMI | -|------|-------------------| -| RAM: | 96kb | -| Flash: | 512kb | +| MCU: | LPC2387 ARM7-TDMI | +|-----------|-------------------| +| RAM: | 96kb | +| Flash: | 512kb | # More info @@ -30,42 +29,67 @@ OS/RIOT/images/MSBA2_photo.jpg) [MSB-A2 page @ Freie Universität Berlin/CST](http://www.mi.fu-berlin.de/inf/groups/ag-tech/projects/Z_Finished_Projects/ScatterWeb/modules/mod_MSB-A2.html) -## Toolchains +## Flashing -See: [ARM](https://github.com/RIOT-OS/RIOT/wiki/Family:-ARM) +The MSB-A2 is programmed via an ISP bootloader over UART. The board includes +an FTDI USB-TTL converter, which is connected to the left USB Mini-B connector +(see picture above). Connect the MSB-A2 using that connector to your PC and +run from within the folder of your application to flash: -Working: - - CodeSourcery 2013.11 - - CodeSourcery 2014.05 (only hello-world tested) - - CodeSourcery 2008q3 - - [GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded) 5.2.1 20151202 (release) (only [`default`](https://github.com/RIOT-OS/RIOT/tree/master/examples/default) tested) + BOARD=msba2 make flash -Not Working: - - Arm launchpad 2013-2 - - [GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded) 4.8.4 2014q2 (release) +You'll notice that during the first invocation takes a bit longer, as the tool +`lpc2k_pgm` used to flash the MSB-A2 is also compiled. +You can connect to the shell by running: -## Programming and Debugging + BOARD=msba2 make term -Currently the MSBA2 boards only work properly™ with a CodeSourcery toolchain. +## Debugging -##### lpc2k_pgm +Some rigorous hardware modification is needed to access the JTAG interface of +the MSB-A2. -In order to flash the MSBA2 board you also need the `lpc2k_pgm` tool. You can -build it by navigating to the `boards/msba2-common/tools` directory and then -running `make`. The tool will be created inside the `bin/` sub-directory and has -to be copied to a directory inside the `$PATH`. +![MSB-A2 modified to access JTAG](https://raw.githubusercontent.com/maribu/images/master/MSB-A2-JTAG.jpg) -##### flashing/debugging +The following wires need to be soldered on: -Build using the following set of commands: +| Signal | Place | +|:--------------|:----------------------------------------------------------| +| JTAG-TDO | IC2, Pin 1 | +| JTAG-TDI | IC2, Pin 2 | +| JTAG-TMS | IC2, Pin 3 | +| JTAG-TRST | IC2, Pin 4 | +| JTAG-TCK | IC2, Pin 5 | +| JTAG-RTCK (*) | IC2, Pin 100 | +| RESET | right pad of R6 (easier to solder) **or** IC2, Pin 17 | +| GND | The bottom left through-hole pad | - BOARD=msba2 make flash - BOARD=msba2 make term +(*) You can safely omit the connection to JTAG-RTCK. +As debugger an FT2232HL is used, the cheapest version costs less 10€ (often +nicknamed CJMCU-2232HL). +Connect as fallows: -## Known Issues +| FT2232HL | MSB-A2 | +|:----------|:----------| +| GND | GND | +| AD0 | JTAG-TCK | +| AD1 | JTAG-TDI | +| AD2 | JTAG-TDO | +| AD3 | JTAG-TMS | +| AD4 | JTAG-TRST | +| AD5 | RESET | + +Once this is done, debugging is as simple as running: + + BOARD=msba2 make debug + +### Flashing via OpenOCD + +Theoretically you should be able to flash also via JTAG. But do not expect this +to be faster. Also: Do you really want to risk bricking the MSB-A2 you spend so +much time to modify? The author of this text surely didn't want to risk that... -None */