Arduino for STM32

The system is not in a noisy environment. The GPIO lines are coming from capacitive touch sensors, so there is no switch bounce either. But perhaps expecting external interrupts on 30 GPIO lines at the same time was too much. I’d thought that the GPIO lines would ORed together (like in TI’s MSP430 ...

Thanks for the quick feedback. I can use it in bare-bones implementation (outside of Arduino structure, as suggested), but wanted to use generic Arduino interrupt structure for uniformity. I’d considered poling (GPIO monitoring via timer interrupts), but wanted to consider GPIO interrupts first to ...

Unlike AVR based Arduino boards, my understanding is that interrupts can be configured on any GPIO pin on STM32 boards. I'm using STM32F407VG based board. STM32 processors have seven GPIO lines, and seven interrupt handlers. I need to configure 30 pins to interrupt lines. Fortunately, the service ...