1 files changed, 8 insertions(+), 3 deletions(-)

M arm04/src/uart.c

@@ 16,9 16,14 @@ void usart_configure_speed(uart_t *uart, uint32_t clock_freq,
   uint32_t mantissa = temp / 16;
   uint32_t fraction = temp % 16;
 
-  if (fraction == 15 && ((temp + 8) % 16) == 0) {
-    mantissa++;
-    fraction = 0;
+  // rounding
+  if (((temp + 8) % 16) == 0) {
+    if (fraction == 15) {
+      mantissa++;
+      fraction = 0;
+    } else {
+      fraction++;
+    }
   }
 
   uart->periph->BRR = (mantissa << USART_BRR_DIV_Mantissa_Pos) | (fraction << USART_BRR_DIV_Fraction_Pos);