[STM103CBT6] interrupt ExtIx versus frequency APB2

[przemyslaw jakobczak]

Posted on January 30, 2017 at 20:37

I have a problem with the simultaneous handling of interrupts EXTIx ORAX converter ADC1. I must probe the A / C with a maximum frequency. Therefore, I need to set the maximum possible frequency of the bus APB2. As we increase the frequency of bus APB2 above 4.5 MHz to stop working interrupt eXTix, A/C works. What's wrong? I generate code from STM32CubeMX.

[przemyslaw jakobczak]

Posted on February 01, 2017 at 14:14

It turned out that after changing the frequency APB2, I stopped working properly PWM that controls the system, which generates input signals exti. Enough improvement in the configuration of PWM, the frequency change APB2. Subject shut.