I have tried everything I can think of to set PB8 high. This is a custom PCB where PB8 is connected through a 1k resistor to a stepper driver input. With board off, measuring pin to VCC resistance is 105kOhm, measured to GND is 95kOhm, so not directl...

I want to avoid using VIAs between the balls in my design with the UFBGA 100 package as it increases the cost considerably and I am not comfortable with these small tolerances. This seems feasible if only the NRST pin is can be routed through PC0. Co...

Posted on June 20, 2014 at 08:54 I'm trying to configure the I2C2 on an STM32F401 chip. The I2C1 is working fine, but the I2C2 is always returning HAL_BUSY. After initializing the GPIO port the SDA line is being pulled low, but no slave device i...

Posted on January 26, 2013 at 09:50 Hi :) I have a problem which I have been trying to solve my self for the last weeks. I am building a custom bootloader which has to work over CAN bus. Bootloader is located at 0x0800000 to 0x08...