HOWTO: Use STM32 SPI half duplex mode

I've got my hands onto some STM32F030F4P6 ARM-Cortex M0 processors. Though touted as "32 cents 32-bit micro", it is not that inexpensive from DigiKey in one-off quantity ($1.45). However¬†it is still cheaper than ATmegas and offers 3 times the performance. The chip comes in 20-pin TSSOP package. Limited pins require much more¬†thoughts when assigning pin … Continue reading HOWTO: Use STM32 SPI half duplex mode