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Last active October 16, 2024 20:03
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Programming a Tomu EFM32HG with ST-Link V2 and OpenOCD
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programming-tomu-efm32hg-with-stlinkv2-openocd.md

Programming a Tomu EFM32HG with ST-Link V2 and OpenOCD

Here's one way to program a Tomu (https://tomu.im/) or EFM32 chip using a cheap $8 ST-Link V2 programmer

  1. Install OpenOCD - http://openocd.org/

    e.g. on Mac OS X: brew install openocd

  2. Create a file called "~/openocd-stlinkv2-efm32.cfg" that contains:

    source [find interface/stlink-v2.cfg]
    set CHIPNAME efm32
    set CPUTAPID 0x0bc11477
    source [find target/efm32.cfg]
  1. Program a Tomu with a .bin file
    cd tomu-quickstart/miniblink
    make 
    openocd -f ~/openocd-stlinkv2-efm32.cfg -c "program miniblink.bin verify reset exit 0x4000"
  1. Done!
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