X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Fbetty.c;h=3a3e7a51313d9f398055ad43ce54508b5abffd0a;hp=2cd287f885825a1a179d5a523993399dee477db6;hb=HEAD;hpb=a409cb5b36482767f766ec9efc5dbecaa2274660

diff --git a/betty/betty.c b/betty/betty.c
index 2cd287f..3a3e7a5 100644
--- a/betty/betty.c
+++ b/betty/betty.c
@@ -16,6 +16,8 @@ const char announce[]="betty - live from flash at 0x80000000! ;)\r\n";
 const char d1_txt[]="betty";
 const char d2_txt[]="- alphablend -";
 u8 contrast;
+t_button button;
+int sample_count;
 
 /*
  * functions
@@ -36,9 +38,38 @@ void display_string_page(u8 x,u8 p,u8 *s,u8 f,u8 o,u8 sp) {
 	}
 }
 
-void input_event(void) {
+void audio_mute_toggle(void) {
 
-	/* button test! */
+	if(IOPIN0&(1<<11))
+		IOCLR0=(1<<11);
+	else
+		IOSET0=(1<<11);
+}
+
+#define AUDIO_TONE_C	(7500000/(262*256))
+#define AUDIO_TONE_D	(7500000/(294*256))
+#define AUDIO_TONE_E	(7500000/(330*256))
+#define AUDIO_TONE_F	(7500000/(349*256))
+#define AUDIO_TONE_G	(7500000/(392*256))
+//#define AUDIO_TONE_A	(7500000/(440*256))
+#define AUDIO_TONE_A	120
+#define AUDIO_TONE_H	(7500000/(494*256))
+
+void __attribute__ ((interrupt("IRQ"))) set_sample(void) {
+
+	//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_MATCH0);
+}
+
+void __attribute__ ((interrupt("IRQ"))) input_event(void) {
+
+	u8 noret,tries;
+
+	/* button scan */
 	if(button_get_event(&button)) {
 		switch(button.key[0]) {
 			case BUTTON_POWER:
@@ -103,11 +134,28 @@ void input_event(void) {
 				display_string_page(10,8,(u8 *)d2_txt,
 				                    DISPLAY_FILL_B,0,8);
 				break;
+			case BUTTON_MUTE:
+				audio_mute_toggle();
+				break;
 			default:
 				display_clear_screen();
 				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);
 }
 
 /*
@@ -117,7 +165,9 @@ void input_event(void) {
 int main() {
 
 	/* variables */
-	t_button button;
+
+	/* init */
+	sample_count=0;
 
 	/* system init */
 	pll_init();
@@ -139,7 +189,7 @@ 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 +200,32 @@ 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,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,AUDIO_TONE_A,
+	                          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);
+	interrupt_tc_enable(INTERRUPT_TC0);
+
+	/* pwm init */
+	pwm_reset;
+	pwm_set_rate_and_prescaler(0xff,0);
+	pwm_config(PWM_CHAN2,PWM_SINGLE_EDGE,0,0);
+	pwm_match_ctrl_config(PWM_CHAN2,PWM_MATCH_RESET);
+	pwm_enable;
+	
 
 	/*
 	 * start it ...
@@ -167,6 +239,8 @@ int main() {
 
 	
 	while(1) {
+		pause(0xffffff);
+		uart0_send_string((char *)announce);
 	}
 
 	return 0;