I've never designed a microcontroller circuit before, but have programmed them on dev boards. I've Googled around for a while, but haven't found a definitive answer. Maybe I'm missing something.
I would like to use a microprocessor to buffer the output of an ADC, and get the results back to my Raspberry Pi via SPI. However when it comes to programming the actual micro controller I don't really want to spend a lot of money on a programmer.
Surely there must be open source tools which i can use for this? If so, which chip manufacturer has the best open source support on the web?
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