add code to control the audio buzzer

[protos/xbee-avr.git] / main.c

diff --git a/main.c b/main.c
index 0e52717..8e2aa0e 100644 (file)
--- a/main.c
+++ b/main.c
@@ -52,6 +52,7 @@
 #include <rdline.h>
 #include <timer.h>
 
+#include "beep.h"
 #include "main.h"
 
 struct xbeeboard xbeeboard;
@@ -588,6 +589,8 @@ static void main_timer_interrupt(void)
        static uint16_t cycles;
        static uint8_t cpt;
 
+       cpt++;
+
        /* interrupt every 2048 cycles */
        cycles += 2048;
        if (cycles >= 12000) {
@@ -601,6 +604,11 @@ static void main_timer_interrupt(void)
        else
                LED1_OFF();
 
+       if (cpt & beep_mask)
+               BUZZER_ON();
+       else
+               BUZZER_OFF();
+
        /* call scheduler every 682us with interrupt unlocked */
        sei();
        if ((cpt & 0x3) == 0)
@@ -614,7 +622,7 @@ int main(void)
        int8_t err;
        struct xbee_dev dev;
 
-       DDRA = 0x07; /* LEDs */
+       DDRA = 0x07 /* LEDs */ | 0x10 /* buzzer */;
 
        uart_init();
        uart_register_rx_event(CMDLINE_UART, emergency);
@@ -627,6 +635,7 @@ int main(void)
 
        cmdline_init();
        spi_servo_init();
+       beep_init();
 
        printf_P(PSTR("\r\n"));
        rdline_newline(&xbeeboard.rdl, xbeeboard.prompt);