alexey.zholtikov/avr_328p_freertos
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2019-04-17 15:54:24 -05:00
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readme
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Project modified from: http://www.scienceprog.com/using-freertos-kernel-in-avr-projects/
Create new C Project of type AVR Cross Target Application [Empty Project]
Select AVR-GCC Toolchain
Set Release/Debug configuration
Select MCU Type: ATMega328P
Select MCU Frequency (Hz): 8,000,000
Using FreeRTOS
Download: http://www.freertos.org
Latest as of writing: 8.2.0
To keep things simple we will mirror the required directory structure for FreeRTOS in our project. This will allow us to migrate to future versions easily.
1. Create [Source] folder and copy in contents of [FreeRTOS\Source] folder
2. Create [Source\include] folder and copy in contents of [FreeRTOS\Source\include] folder
3. Create [Source\portable] folder
4. Create [Source\portable\GCC] folder
5. Create [Source\portable\GCC\TARGET_DEVICE] folder and copy in port.c and portmacro.h (these files will be modified to target your hardware)
6. Create [Source\portable\MemMang] folder
Setting FreeRTOS include path:
Right click on project and select Properties
Under C/C++ General --> Paths and Symbols
Select the includes tab and add a folder linking to [PROJECT_NAME]/Source/include
Under C/C++ Build --> Settings
Select Tool Settings Tab
Select AVR Compiler --> Symbols
Add GCC_MEGA_AVR to Define Syms (-D)

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tasks.c
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void vLEDFlashTask(void *pvParms) void vLEDFlashTask(void *pvParms)
{ {
vLEDInit(); vLEDInit();
portTickType xLastWakeTime; portTickType xLastWakeTime;
const portTickType xFrequency = 1000; const portTickType xFrequency = 1000;