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

HOWTO: Write a display driver for SEGGER emWin

One lucky day you wake up to find your dream of creating sophisticated graphics user interface for MCU projects comes true, because STMicroelectronics has released a free version of SEGGER emWin for STM32 line of ARM controllers. But your excitement is quickly balanced by the frustration that your favourite LCD panel is not supported. That … Continue reading HOWTO: Write a display driver for SEGGER emWin