Anyone who’s ever written more than a dozen or so lines of code knows that debugging is a part of life in our world. Anyone who’s written code for microcontrollers knows that physical debugging is a part of our life as well. Atmel processors uses a serial communications protocol called debugWire, which is a simpler version of JTAG and allows full read/write access to all registers and allows one to single step, break, etc. [Nerd Ralph], a prominent fixture here at Hackaday has dug into the AVR debugWire protocol and enlightened us with some valuable information.
(Score: 2) by jimtheowl on Wednesday April 25 2018, @03:04AM
If they do get significantly less hacker friendly, there are plenty of alternatives. For instance I am just about to attempt to burn Mecrisp FORTH on a cheap F103C8T6 ARM STM32.
That is the performance version based on the ARM Cortex-M3.
https://en.wikipedia.org/wiki/STM32#STM32_F1