From 6d6c3c8a43f34457443ede4209d97ccba567ef24 Mon Sep 17 00:00:00 2001 From: NiklasFauth Date: Fri, 29 Mar 2019 01:27:01 +0100 Subject: [PATCH] added warning and link to uart control to readme --- README.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/README.md b/README.md index 66a0a3a..176b89f 100644 --- a/README.md +++ b/README.md @@ -35,6 +35,8 @@ 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 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. +Do not power the mainboard from the 3.3V of your programmer! This has already killed multiple mainboards. + 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. To flash the STM32, use the ST-Flash utility (https://github.com/texane/stlink). @@ -78,6 +80,9 @@ Most robust way for input is to use the ADC and potis. It works well even on 1m Have a look at the config.h in the Inc directory. That's where you configure to firmware to match your project. Currently supported: Wii Nunchuck, analog potentiometer and PPM-Sum signal from a RC remote. +A good example of control via UART, eg. from an Arduino or raspberryPi, can be found here: +https://github.com/p-h-a-i-l/hoverboard-firmware-hack + If you need additional features like a boost button, have a look at the while(1) loop in the main.c ### Additional Hardware