UART2 on STM32F215RET6

[henrycase]

Hi,

I’m running a STM32F215RET6 on a CW308T target board connected to a CW313. My firmware uses two UARTs:

• USART1 (PA9/PA10) for SimpleSerial communication with the ChipWhisperer
• USART2 (PA2/PA3) for a second serial channel in my custom firmware

Since the CW313 doesn’t seem to have a labelled GPIO header that exposes PA2/PA3, I ended up soldering thin wires directly to pins 16 (PA2) and 17 (PA3) on the STM32F215 LQFP-64 package to connect a USB-UART adapter.

My questions:

1. Is there a better/intended way to physically access arbitrary GPIO pins (like PA2/PA3) on the CW313 setup? Did I miss a header?
2. Can you confirm that USART2 on the STM32F215RET6 (LQFP-64) is indeed on physical chip pins 16 (PA2/TX) and 17 (PA3/RX)?

Thanks!