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updated README.md: added link to compiler

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larsm 2018-12-28 00:15:41 +01:00
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README.md
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@ -33,7 +33,7 @@ http://vocke.tv/lib/exe/fetch.php?media=20150722_hoverboard_sch.pdf
---
## Flashing
To build the firmware, just type "make". Make sure you have specified your gcc-arm-none-eabi binary (version 7 works, there is a version that does not!) location in the Makefile ("PREFIX = ..."). Right to the STM32, there is a debugging header with GND, 3V3, SWDIO and SWCLK. Connect GND, SWDIO and SWCLK to your SWD programmer, like the ST-Link found on many STM devboards.
To build the firmware, just type "make". Make sure you have specified your gcc-arm-none-eabi binary location in the Makefile ("PREFIX = ...") (version 7 works, there is a version that does not!) (if the ons in linux repos do not work, use the official version: https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads). Right to the STM32, there is a debugging header with GND, 3V3, SWDIO and SWCLK. Connect GND, SWDIO and SWCLK to your SWD programmer, like the ST-Link found on many STM devboards.
Make sure you hold the powerbutton or connect a jumper to the power button pins while flashing the firmware, as the STM might release the power latch and switches itself off during flashing. Battery > 36V have to be connected while flashing.