Yahya tipped us with his latest tutorial about flashing EFM32 MCUs with OpenOCD using FT2232H adapter.
Old MCUs from vendors like ATMEL and MICROCHIP, like the PIC16F and Atmega family, tend to have a special programming interface to program internal flash. For example, Atmega used SPI pins (MISO, MOSI, SCK) and PIC used two pins (PGC, PGD)— one as a clock and another as a bi-directional data line. New MCUs, especially with an ARM core, use JTAG/SWD as a programming/debugging interface.
Getting Started with OPENOCD Using FT2232H Adapter for SWD Debugging – [Link]
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