X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Fbetty.c;fp=betty%2Fbetty.c;h=3b29d2e2207c5a2e2659ea68771c6384a5f0889f;hp=bac66143a21d14c53f875da34132b7375c49e396;hb=9f1a71389dff6cddd11c4b9975a0d1b91806ee2d;hpb=8ec47a7e5b5658c93eeed6776685cb05ae942fdf

diff --git a/betty/betty.c b/betty/betty.c
index bac6614..3b29d2e 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
@@ -37,6 +38,16 @@ void display_string_page(u8 x,u8 p,u8 *s,u8 f,u8 o,u8 sp) {
 	}
 }
 
+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_M0);
+}
+
 void __attribute__ ((interrupt("IRQ"))) input_event(void) {
 
 	u8 noret,tries;
@@ -135,6 +146,9 @@ int main() {
 
 	/* variables */
 
+	/* init */
+	sample_count=0;
+
 	/* system init */
 	pll_init();
 	pin_init();
@@ -166,12 +180,29 @@ 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_ext_ir_set(INTERRUPT_EXT3);
 	interrupt_enable(INTERRUPT_EINT3,INTERRUPT_MODE_VIRQ,
-	                 0,(u32)input_event);
+	                 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_M0);
+	interrupt_enable(INTERRUPT_PWM,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 ...