X-Git-Url: https://robinkrens.nl/gitweb/?a=blobdiff_plain;f=uart.c;h=a3905c4e0cd4f0e1eb1533a16baf02ee9d1cc41b;hb=3f9ee85c250250580f0ceb38525ddb99ebc6d36e;hp=93b2c916cbf4b7955ccba5ad3b4d8e7fa069cca7;hpb=22c1abee1ad44eb88784fd7ff38ca669f41b6c01;p=cortex-from-scratch

diff --git a/uart.c b/uart.c
index 93b2c91..a3905c4 100644
--- a/uart.c
+++ b/uart.c
@@ -43,6 +43,9 @@ void uart_init() {
 */
 }
 
+void wait() {
+	for (int i = 0; i < 100; i++);
+}
 
 extern void uart_putc(unsigned char ch) {
 	
@@ -50,15 +53,16 @@ extern void uart_putc(unsigned char ch) {
 		while (*USART1_SR & 0x0C) { } // transmit data register empty and complete
 		*USART1_DR = 0x0D; // return line
 	}
-	
-	while ((*USART1_SR & 0xFF) == 0x0C) {} // busy bit  
+
+
+	while (*USART1_SR & 0x0C) {} 
 		*USART1_DR = ch;
 
-}
 
-void wait() {
-	for (int i = 0; i < 100; i++);
+	
+	wait();
 }
+
 extern void uart_puts(unsigned char *str)
 {
 
@@ -66,7 +70,6 @@ extern void uart_puts(unsigned char *str)
 
     for (i = 0; i < strlen(str); i++)
     {
-	wait();
         uart_putc(str[i]);
     }
 }