Posted on May 17, 2011 at 12:17STM32F103 PB.1 is not a 5V tolerant pin. when config it in open-drain output mode, can it be pulled up to 5V with a external resistor?
Posted on May 17, 2011 at 12:16Hi, I use i2c1 in master mode, when in receiving process, if run without break, it works fine. But if run the program step by step, it doesn't work. So i use uart1 to print running information, but a new problem come...
Posted on May 17, 2011 at 12:16Thanks a lot! After reset, USART1_CK, TIM1_CH1 and MCO are disabled, to use PA8 as mco, just config MCO to work, and config PA8 to AF mode.:-D Only one AF on the same pin can be enabled. But if two AF functions in outp...
Posted on May 17, 2011 at 12:16 PA8 is a multi-function pin, it's AF can be USART1_CK, TIM1_CH1 or MCO, how can i config it to be MCO? I can remap TIM1 to none, but USART1_CK can't be remapped!
