added commenting, removed deprecated functions

[cortex-from-scratch] / drivers / uart.c

diff --git a/drivers/uart.c b/drivers/uart.c
index 0090ef2..5e53362 100644 (file)
--- a/drivers/uart.c
+++ b/drivers/uart.c
@@ -70,10 +70,10 @@ void uart_putc(unsigned char ch) {
        
        if (ch == '\n') {
                while(!rchkbit(USART1_SR, 6));
-               regw_u8(USART1_DR, 0x0D, 0, OWRITE); // return line
+               rwrite(USART1_DR, 0x0D); // return line
        }
                while(!rchkbit(USART1_SR, 6));
-               regw_u8(USART1_DR, ch, 0, OWRITE);
+               rwrite(USART1_DR, ch);
 }
 
 char uart_getc(void) {
@@ -99,13 +99,10 @@ char uart_getc(void) {
        
 void set_baudrate() {
 
-//     rwrite(USART1_BRR, 0x000001A1); 48 MHZ
-//     rwrite(USART1_BRR, 0x0000022B); 64 MHz
-//     rwrite(USART1_BRR, 0x00000138); 36 MHz
 //     rwrite(USART1_BRR, 0x00000271); 72 MHz
 #ifdef ENABLE_HSE
-       rwrite(USART1_BRR, 0x00000138);
+       rwrite(USART1_BRR, 0x00000138); // 36 MHz
 #else
-       rwrite(USART1_BRR, 0x00000045);
+       rwrite(USART1_BRR, 0x00000045); // 8 Mhz 
 #endif
 }