--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/comm.c	Mon Oct 03 21:19:15 2011 +1030
@@ -0,0 +1,41 @@
+/* Martin Thomas 4/2009, 3/2010 */
+#include "stm32f10x.h"
+#include "comm.h"
+
+#define USARTx USART1
+
+int
+comm_test(void) {
+    return (USART_GetFlagStatus(USARTx, USART_FLAG_RXNE) == RESET) ? 0 : 1;
+}
+
+char
+comm_get(void) {
+    while (USART_GetFlagStatus(USARTx, USART_FLAG_RXNE) == RESET)
+	;
+    
+    return (char)USART_ReceiveData(USARTx);
+}
+
+void
+comm_put(char d) {
+    while(USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET)
+	;
+    
+    USART_SendData(USARTx, (uint16_t)d);
+}
+
+void
+comm_puts(const char* s) {
+    char c;
+    while ((c = *s++) != '\0') {
+	comm_put(c);
+    }
+}
+
+void
+comm_init (void) {
+    // already done in main.c
+}
+
+