Update tools encode a 2.5 MHz signal with the AVR.

1 files changed, 45 insertions, 0 deletions

diff --git a/tools/avr_codegen/test.c b/tools/avr_codegen/test.c
new file mode 100644
index 0000000..e962e09
--- /dev/null
+++ b/tools/avr_codegen/test.c
@@ -0,0 +1,45 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/sleep.h>
+#include <util/delay.h>
+
+void delay_ms(uint32_t time) {
+  uint32_t i;
+  for (i = 0; i < time; i++) {
+    _delay_ms(1);
+  }
+}
+
+#define NOOP asm volatile("nop" ::)
+
+
+static void setup_clock( void )
+{
+	/*Examine Page 33*/
+
+	CLKPR = 0x80;	/*Setup CLKPCE to be receptive*/
+	CLKPR = 0x00;	/*No scalar*/
+	OSCCAL = 0x80; //B8 is bottom E8 is top. 
+}
+
+int main( )
+{
+	cli();
+	setup_clock();
+	DDRB = _BV(4);
+	uint8_t marker;
+
+	while(1)
+	{
+		marker = 0x05;
+		do{
+			PORTB = _BV(4);
+			marker--;
+			PORTB = 0;
+		} while( marker );
+
+		_delay_us(1000000/60);
+	}
+
+	return 0;
+}