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96 lines
3.1 KiB
Plaintext
96 lines
3.1 KiB
Plaintext
/**
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@defgroup boards_msba2 MSB-A2
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@ingroup boards
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@brief Support for the ScatterWeb MSB-A2 board
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## Overview
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## Hardware
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| MCU: | LPC2387 ARM7-TDMI |
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|-----------|-------------------|
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| RAM: | 96KiB |
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| Flash: | 512KiB |
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# More info
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## Board Schematics
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## Circuit Diagrams
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[MSB-A2 page @ Freie Universität Berlin/CST](https://www.mi.fu-berlin.de/inf/groups/ag-tech/projects/ScatterWeb/modules/mod_MSB-A2.html)
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## Flashing
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The MSB-A2 is programmed via an ISP bootloader over UART. The board includes
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an FTDI USB-TTL converter, which is connected to the left USB Mini-B connector
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(see picture above). Connect the MSB-A2 using that connector to your PC and
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run from within the folder of your application to flash:
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BOARD=msba2 make flash
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You'll notice that during the first invocation takes a bit longer, as the tool
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`lpc2k_pgm` used to flash the MSB-A2 is also compiled.
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You can connect to the shell by running:
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BOARD=msba2 make term
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## Debugging
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Some rigorous hardware modification is needed to access the JTAG interface of
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the MSB-A2.
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The following wires need to be soldered on:
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| Signal | Place |
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|:--------------|:----------------------------------------------------------|
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| JTAG-TDO | IC2, Pin 1 |
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| JTAG-TDI | IC2, Pin 2 |
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| JTAG-TMS | IC2, Pin 3 |
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| JTAG-TRST | IC2, Pin 4 |
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| JTAG-TCK | IC2, Pin 5 |
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| JTAG-RTCK (*) | IC2, Pin 100 |
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| RESET | right pad of R6 (easier to solder) **or** IC2, Pin 17 |
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| GND | The bottom left through-hole pad |
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(*) You can safely omit the connection to JTAG-RTCK.
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As debugger an FT2232HL is used, the cheapest version costs less 10€ (often
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nicknamed CJMCU-2232HL).
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Connect as follows:
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| FT2232HL | MSB-A2 |
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|:----------|:----------|
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| GND | GND |
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| AD0 | JTAG-TCK |
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| AD1 | JTAG-TDI |
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| AD2 | JTAG-TDO |
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| AD3 | JTAG-TMS |
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| AD4 | JTAG-TRST |
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| AD5 | RESET |
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Once this is done, debugging is as simple as running:
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BOARD=msba2 make debug
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### Flashing via OpenOCD
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Theoretically you should be able to flash also via JTAG. But do not expect this
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to be faster. Also: Do you really want to risk bricking the MSB-A2 you spend so
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much time to modify? The author of this text surely didn't want to risk that...
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*/
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