Chip bug? Problem with first byte on USART3

sima2 · ‎2011-03-02

Posted on March 03, 2011 at 08:35

sima2 · ‎2011-05-17

Posted on May 17, 2011 at 14:26

I solved it by clearing the status register before sending the first byte from a buffer.

Somehow the SR sometimes contains junk after reset (i think).

// Clear Transmission complete flag by reading the SR

i = USART3->SR;

// Send first byte

USART3->DR = tx_buffer[0];