This project was developed for Cornell's ECE5725 Embedded OS class by Nikita Ermoshkin and Brendan Quinn.
The final CNC project is held in folder 6-cnc_controller.
-
Install arm-none-eabi toolchain (https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads) to
/usr/local/and make sure it's in your $PATH -
Format SD card as fat32, named BOOT.
-
Copy over RPi's boot code (bootcode.bin and start.elf, get it from https://github.com/raspberrypi/firmware/tree/master/boot) to the root of the SD card.
-
Run with sd card still in. First will compile a kernel.img to run, the second will copy to SD card (this is convenience target, can also easily just copy the resulting kernel.img to the SD card root).
> make
> make copy
- Install SD card in RPi and plug in power. The kernel.img will start executing.
Each of these examples build on the previous, so the last example should contain all the features, so copy code from an earlier example into a later one to use that featuer.
- rpi_test_project
This is a simple project using the ARM timer interrupt to flash an LED. Note the LED flashing only works on RPI2, for RPI3 change to a different GPIO, on the header
- uart_example
Demonstrates writing using the mini UART (UART 1) and a simple implementation of printf.
Copyright (C) May 2017 Nikita Ermoshkin and Brendan Quinn
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.