Resolved! Why does PA4 chip select not stay high when configuring PUPDR pull-up on STM32F407VGTX?
Hi,I’m working with the STM32F407VGTX and I am using GPIO PA4 as the SPI chip-select (CS) pin. In my GPIO initialization, I set the PUPDR register to configure PA4 with a pull-up, expecting the CS pin to remain HIGH when idle. However, I observe on m...