X-Git-Url: https://www.hackdaworld.org/gitweb/?a=blobdiff_plain;f=betty%2Fbetty.c;h=24ea2eb7ce415f0268b5d5da2ee8ab842db7802f;hb=7afb73c9bb16cfad0ff1e2455ba1cfd85754c8bc;hp=0bd6d0a6ca6b40492fab913d269f10b6a1d6683a;hpb=945d83a31473b984473f571bb92486991d14aa16;p=my-code%2Farm.git

diff --git a/betty/betty.c b/betty/betty.c
index 0bd6d0a..24ea2eb 100644
--- a/betty/betty.c
+++ b/betty/betty.c
@@ -17,6 +17,7 @@ const char d1_txt[]="betty";
 const char d2_txt[]="- alphablend -";
 u8 contrast;
 t_button button;
+int sample_count;
 
 /*
  * functions
@@ -37,9 +38,21 @@ void display_string_page(u8 x,u8 p,u8 *s,u8 f,u8 o,u8 sp) {
 	}
 }
 
-void input_event(void) {
+void __attribute__ ((interrupt("IRQ"))) set_sample(void) {
 
-	/* button test! */
+	uart0_send_byte('S');
+	pwm_update_match(PWM_CHAN2,PWM_SINGLE_EDGE,sinus[sample_count++],0);
+	if(sample_count==0xff)
+		sample_count=0;
+	interrupt_ack();
+	interrupt_tc_ir_set(INTERRUPT_TC0,INTERRUPT_M0);
+}
+
+void __attribute__ ((interrupt("IRQ"))) input_event(void) {
+
+	u8 noret,tries;
+
+	/* button scan */
 	if(button_get_event(&button)) {
 		switch(button.key[0]) {
 			case BUTTON_POWER:
@@ -109,6 +122,20 @@ void input_event(void) {
 				break;
 		}
 	}
+
+	/* resume the interrupt at button release */
+	noret=1;
+	while(noret) {
+		tries=0xff;
+		noret=1;
+		while(tries--) {
+			noret=IOPIN0&(1<<30)?0:1;
+			if(noret)
+				break;
+		}
+	}
+	interrupt_ack();
+	interrupt_ext_ir_set(INTERRUPT_EXT3);
 }
 
 /*
@@ -119,6 +146,9 @@ int main() {
 
 	/* variables */
 
+	/* init */
+	sample_count=0;
+
 	/* system init */
 	pll_init();
 	pin_init();
@@ -139,7 +169,7 @@ int main() {
 	/* button init */
 	button.mode=BUTTON_INT;
 	button_init(&button);
-	button_set_retries(&button,0);
+	button_set_retries(&button,30);
 
 	/* flash init */
 	flash_init();
@@ -150,10 +180,31 @@ int main() {
 
 	/* interrupt init */
 	interrupt_init();
+
+	// ext interrupt
 	interrupt_ext_ir_config(INTERRUPT_EXT3,INTERRUPT_EXT_NOWAKE,
 	                        INTERRUPT_EXT_MODE_EDGE,
 	                        INTERRUPT_EXT_POLAR_LOW);
-	interrupt_enable(INTERRUPT_EINT3,INTERRUPT_MODE_VIRQ,0,(u32)input_event);
+	interrupt_ext_ir_set(INTERRUPT_EXT3);
+	interrupt_enable(INTERRUPT_EINT3,INTERRUPT_MODE_VIRQ,
+	                 0,(u32)&input_event);
+
+	// timer interrupt
+	interrupt_tc_config(INTERRUPT_TC0,INTERRUPT_TC_MODE_T,0,0);
+	interrupt_tc_match_config(INTERRUPT_TC0,INTERRUPT_M0,120,
+	                          INTERRUPT_TC_MATCH_IR|
+	                          INTERRUPT_TC_MATCH_RESET);
+	interrupt_tc_ir_set(INTERRUPT_TC0,INTERRUPT_MATCH0);
+	interrupt_enable(INTERRUPT_TIMER0,INTERRUPT_MODE_VIRQ,
+	                 1,(u32)&set_sample);
+
+	/* pwm init */
+	pwm_set_rate_and_prescaler(0xff,0);
+	pwm_config(PWM_CHAN2,PWM_SINGLE_EDGE,0,0);
+	pwm_match_ctrl_config(PWM_CHAN2,0);
+	interrupt_pwm_ir_set(PWM_CHAN2);
+	pwm_enable;
+	
 
 	/*
 	 * start it ...
@@ -167,6 +218,8 @@ int main() {
 
 	
 	while(1) {
+		pause(0xffffff);
+		uart0_send_string((char *)announce);
 	}
 
 	return 0;