X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=main.c;h=5d449de1b11efa5669f804e0c648bfff391b194c;hb=7550fa78c8354d1551266bb15e280d4dd6cefb50;hp=c729bbf0fcf159532211b394baaca5ae1b06db87;hpb=809de0a09e20d0eee4188fa2db36fdc9be990526;p=protos%2Frc_servos.git

diff --git a/main.c b/main.c
index c729bbf..5d449de 100644
--- a/main.c
+++ b/main.c
@@ -1,4 +1,5 @@
 #include <aversive.h>
+#include <aversive/wait.h>
 
 struct servo {
 	uint8_t bit;
@@ -7,28 +8,43 @@ struct servo {
 
 static struct servo servo_table[] = {
 	{
-		.bit = 0,
-		.command = 0,
+		.bit = 2,
+		.command = 300,
+	},
+	{
+		.bit = 3,
+		.command = 700,
 	},
 	{
-		.bit = 1,
+		.bit = 4,
 		.command = 512,
 	},
 	{
-		.bit = 2,
-		.command = 1023,
+		.bit = 5,
+		.command = 512,
+	},
+	{
+		.bit = 6,
+		.command = 512,
+	},
+	{
+		.bit = 7,
+		.command = 512,
 	},
 };
 #define NB_SERVO (sizeof(servo_table)/sizeof(*servo_table))
 
-static volatile uint8_t bypass;
+static uint8_t bypass;
 static volatile uint8_t done;
-static volatile uint8_t portval;
-static volatile uint8_t rxidx;
+static uint8_t portval;
+static uint8_t rxidx;
 
 #define BYPASS_ENABLE 14
 #define BYPASS_DISABLE 15
 
+#define LED_ON() do { PORTB |= 0x02; } while(0)
+#define LED_OFF() do { PORTB &= ~0x02; } while(0)
+
 /*
  * SPI protocol:
  *
@@ -40,7 +56,7 @@ static volatile uint8_t rxidx;
  * Command 14 is to enable bypass mode.
  * Command 15 is to disable bypass mode.
  */
-static volatile union {
+static union {
 	uint8_t u8;
 	struct {
 		/* inverted: little endian */
@@ -50,7 +66,7 @@ static volatile union {
 	};
 } byte0;
 
-static volatile union {
+static union {
 	uint8_t u8;
 	struct {
 		/* inverted: little endian */
@@ -61,7 +77,7 @@ static volatile union {
 
 SIGNAL(TIMER1_COMPA_vect)
 {
-	PORTC = portval;
+	PORTD = portval;
 	TIMSK1 &= ~_BV(OCIE1A);
 	done = 1;
 }
@@ -142,12 +158,22 @@ int main(void)
 {
 	uint8_t i;
 	uint8_t t, diff;
+	uint8_t tmp;
 
 	/* LED */
-	DDRB = 0x20;
+	DDRB = 0x02;
 
-	/* servo outputs */
-	DDRC = 0x7;
+#if 0 /* LED debug */
+	while (1) {
+		LED_ON();
+		wait_ms(100);
+		LED_OFF();
+		wait_ms(100);
+	}
+#endif
+
+	/* servo outputs PD2-PD7 */
+	DDRD = 0xfc;
 
 	/* start timer1 at clk/1 (8Mhz) */
 	TCNT1 = 0;
@@ -162,7 +188,7 @@ int main(void)
 
 	sei();
 
-	bypass = 1;
+	bypass = 0;
 	while (1) {
 		t = TCNT0;
 		for (i = 0; i < NB_SERVO; i++) {
@@ -176,9 +202,17 @@ int main(void)
 			poll_spi();
 		}
 		/* bypass mode */
-		while (bypass == 1) {
-			PORTC = PORTB;
-			poll_spi();
+		if (bypass == 1) {
+			LED_ON();
+
+			while (bypass == 1) {
+				tmp = PINC;
+				tmp &= 0x3f;
+				tmp <<= 2;
+				PORTD = tmp;
+				poll_spi();
+			}
+			LED_OFF();
 		}
 	}