Posted on May 17, 2011 at 12:20That was it! You are a Scholar, I didn't know that there was a clock power domain for the AFIO. thanks Mac

Posted on May 17, 2011 at 12:20I have STM32F101-R8T6 and I am trying to use the alternate-alternate function of the I2C1 pins on PB8 & 9. I write a value of 2 to 0x40010004 the AFIO-MAPR, but I read a 0 subsequent to that. I am not confident that th...