The most well-known AVR MCU is perhaps the ATmega328, which is the MCU used on the Arduino ® UNO kit. To keep this post concise, I’ll focus on just the ports for the AVR Dx MCU families.ĪVR Dx: Is this a tinyAVR ®, megaAVR or AVR XMEGA ® MCU? With this support for new devices and a new compiler, I could not help wondering how much memory the standard FreeRTOS demo examples consume on one of these new MCUs and how much the choice of compiler actually influences the code size. While these devices are still available products, AVR MCUs have evolved significantly - and who doesn’t want to use the latest generation of a product?
Why is this great news? Well, it’s because the ATmega323 and ATmega128 MCUs that are supported in earlier versions of FreeRTOS are older devices. These ports not only cover the megaAVR ® 0-series of MCUs and the brand-new AVR Dx devices, but also the three main compilers for AVR MCUs: MPLAB XC8 compiler, AVR-GCC, and IAR Embedded Workbench ® for AVR. It was exciting to see two new AVR ® microcontroller (MCU) ports in FreeRTOS ™ version 10.3.1, or rather six new ports.
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