Initialize.

1 files changed, 70 insertions, 0 deletions

diff --git a/pyecsca/codegen/hal/xmega/uart.c b/pyecsca/codegen/hal/xmega/uart.c
new file mode 100644
index 0000000..692a019
--- /dev/null
+++ b/pyecsca/codegen/hal/xmega/uart.c
@@ -0,0 +1,70 @@
+#include "uart.h"
+
+/*! Define that selects the Usart used in example. */
+#define USART USARTC0
+
+#define TIMEOUT 0
+#define BYTE_REC 1
+
+void init_uart0(void)
+    {
+    /* This PORT setting is only valid to USARTC0 if other USARTs is used a
+     * different PORT and/or pins is used. */
+    /* PIN3 (TXD0) as output. */
+    PORTC.DIRSET = PIN3_bm;
+
+    /* PC2 (RXD0) as input. */
+    PORTC.DIRCLR = PIN2_bm;
+
+    /* USARTC0, 8 Data bits, No Parity, 1 Stop bit. */
+    USART_Format_Set(&USART, USART_CHSIZE_8BIT_gc, USART_PMODE_DISABLED_gc, false);
+
+    /* Set Baudrate to 9600 bps:
+     * Use the default I/O clock fequency that is 2 MHz.
+     * Do not use the baudrate scale factor
+     *
+     * Baudrate select = (1/(16*(((I/O clock frequency)/Baudrate)-1)
+     *                 = 12
+     */
+    USART_Baudrate_Set(&USART, 11, 0);
+
+    /* Enable both RX and TX. */
+    USART_Rx_Enable(&USART);
+    USART_Tx_Enable(&USART);
+    }
+
+unsigned char input_ch_w_timeout_0(char * data, volatile unsigned int timeout)
+    {
+    unsigned int				timeout_counter = 0;
+
+
+    //check if a byte has been recieved or if the timeout has been excedded
+    while (timeout_counter != timeout)
+        {
+        if (USART_IsRXComplete(&USART))
+            {
+            *data = USART_GetChar(&USART);
+            return BYTE_REC;
+            }
+        timeout_counter++;
+        }
+
+    return TIMEOUT;
+    }
+
+char input_ch_0(void)
+    {
+    //check if a byte has been recieved or if the timeout has been excedded
+    while (!USART_IsRXComplete(&USART))
+        {
+        continue;
+        }
+    return USART_GetChar(&USART);;
+    }
+	
+void output_ch_0(char data)
+    {
+    while(!USART_IsTXDataRegisterEmpty(&USART));
+    USART_PutChar(&USART, data);
+    return;
+    }
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