Fix spurious interrupts from STM32 ORE (#456)

Co-authored-by: Steve Karg <skarg@users.sourceforge.net>
2023-07-17 13:49:40 -05:00
parent fcc9647983
commit 7db03ac5e5
2 changed files with 12 additions and 11 deletions
@@ -149,6 +149,9 @@ void USART6_IRQHandler(void)
    }
    /* check for errors and clear them */
    if (USART_GetFlagStatus(USART6, USART_FLAG_ORE) == SET) {
+        /* note: enabling RXNE interrupt also enables the ORE interrupt! */
+        /* dummy read to clear error state */
+        data_byte = USART_ReceiveData(USART6);
        USART_ClearFlag(USART6, USART_FLAG_ORE);
    }
    if (USART_GetFlagStatus(USART6, USART_FLAG_NE) == SET) {