1 files changed, 64 insertions, 0 deletions
diff --git a/lock/back.c b/lock/back.c
new file mode 100644
index 0000000..c5dc35e
--- /dev/null
+++ b/lock/back.c
@@ -0,0 +1,64 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+
+#include "nrfm.h"
+#include "uart.h"
+
+#define RX_PIN         PD7
+#define RX_DDR         DDRD
+#define RX_PORT        PORTD
+#define RX_PCIE        PCIE2
+#define RX_PCINT       PCINT23
+#define RX_PCMSK       PCMSK2
+#define RX_PCINTVEC    PCINT2_vect
+
+static int rxdr = 0;
+
+int main(void)
+{
+	uint8_t n;
+	char s[2];
+	char buf[MAXPDLEN + 1];
+
+	uint8_t rxaddr[] = { 194, 178, 83 };
+
+	RX_DDR &= ~(1 << RX_PIN);
+	RX_PORT |= (1 << RX_PIN); 
+	PCICR |= (1 << RX_PCIE);
+	RX_PCMSK |= (1 << RX_PCINT);
+
+	uart_init();
+	radio_init(rxaddr);
+	radio_print_config();
+
+	sei();
+	radio_listen();
+
+	for (;;) {
+		if (rxdr) {
+			n = radio_recv(buf, MAXPDLEN);
+			buf[n] = '\0';
+			uart_write("Received data: ");
+			uart_write(itoa(n, s, 10));
+			uart_write_line(" bytes");
+			rxdr = 0;
+			if (n > 0) {
+				uart_write("INFO: ");
+				uart_write_line(buf);
+			}
+		} else {
+			uart_write_line("No IRQ");
+			_delay_ms(2000);
+		}
+	}
+
+	return 0;
+}
+
+ISR(RX_PCINTVEC)
+{
+	rxdr = 1;
+}