Hi folks,
I have a question about interrupt priorities for STM32F1 chip (Lia 1.1/Lisa_M 2.0).
In sw/ext/libopencm3/include/libopencm3/stm32/f1/nvic.h are defined priorities for user interrupts. However, if I try to change the priority for example for NVIC_USART2_IRQ (let's say make it higher priority than NVIC_USART1_IRQ), the code compiles, but then the program hangs up instantly in usart_isr interrupt routine (debugged with JTAG).
Can the priorities be set somewhere else or is it a feature to have "hardcoded" priorities?