changes, not yet ok

src/inverterCtrl.c

@@ -0,0 +1,96 @@
+/*
+ * inverter.c
+ *
+ *  Created on: 19.09.2016
+ *      Author: dehottgw
+ */
+
+
+#include "inverterCtrl.h"
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <msp430g2553.h>
+#include <isr_compat.h>
+
+
+#define NUM_OF_SINE_VALUES 20
+
+
+volatile uint8_t pulseWidthIdx = 0;
+
+
+ISR(TIMER1_A0, TA1_ISR_Ovrfl) {
+	if (pulseWidthIdx == 0) {
+		P2OUT |= BIT3;
+	}
+
+	pulseWidthIdx++;
+	if (pulseWidthIdx >= NUM_OF_SINE_VALUES) {
+		pulseWidthIdx = 0;
+	}
+}
+
+ISR(TIMER1_A1, TA1_ISR_Comp) {
+	__disable_interrupt();
+	uint16_t taiv = TA1IV;
+	if (P2OUT & BIT3) {
+		if (taiv == TA1IV_TACCR1) {
+			P2OUT |= BIT4;
+		} else if (taiv == TA1IV_TACCR2) {
+			P2OUT |= BIT5;
+		}
+	}
+	__enable_interrupt();
+}
+
+
+
+void inverterCtrlInit() {
+	// start, stop
+	P2SEL &= ~(BIT3 | BIT4 | BIT5);
+	P2OUT &= ~(BIT3 | BIT4 | BIT5);
+	P2DIR |= BIT3 | BIT4 | BIT5;
+
+	// start mark
+	P2OUT &= ~BIT0;
+	P2DIR |= BIT0;
+	P2SEL |= BIT0;
+
+	// smclk out
+	P1DIR |= BIT4;
+	P1SEL |= BIT4;
+
+
+	TA1CTL = MC_1 | ID_0 | TASSEL_2 | TACLR;
+
+	TA1CCTL0 = CCIE | OUTMOD_4;
+	TA1CCTL1 = CCIE;
+	TA1CCTL2 = CCIE;
+	TA1CCR0 = 0;
+	TA1CCR1 = 0;
+	TA1CCR2 = 0;
+}
+
+
+void inverterCtrlSetFrequency(uint16_t f) {
+	float ff = (float)f;
+	float slotLength = 2 / (ff * 400e-9 * NUM_OF_SINE_VALUES);
+	uint16_t sl = (uint16_t)slotLength;
+	float phase2start = slotLength / 3;
+	uint16_t p2s = (uint16_t)phase2start;
+	float phase3start = slotLength / 3 * 2;
+	uint16_t p3s = (uint16_t)phase3start;
+
+
+	__disable_interrupt();
+	TA1CTL = MC_0;
+	P2OUT &= ~(BIT3 | BIT4 | BIT5);
+	TA1CCR0 = sl;
+	TA1CCR1 = p2s;
+	TA1CCR2 = p3s;
+	pulseWidthIdx = 0;
+	TA1CTL = MC_1 | ID_0 | TASSEL_2 | TACLR;
+	__enable_interrupt();
+}

src/inverterCtrl.h

@@ -0,0 +1,16 @@
+/*
+ * inverter.h
+ *
+ *  Created on: 19.09.2016
+ *      Author: dehottgw
+ */
+
+#ifndef INVERTERCTRL_H_
+#define INVERTERCTRL_H_
+
+#include <stdint.h>
+
+void inverterCtrlInit();
+void inverterCtrlSetFrequency(uint16_t f);
+
+#endif /* INVERTERCTRL_H_ */

src/main.c

@@ -13,6 +13,7 @@
 
 #include "time.h"
 #include "PontCoopScheduler.h"
+#include "inverterCtrl.h"
 
 
 
@@ -25,18 +26,22 @@ int main() {
   // highest possible system clock
   DCOCTL = DCO0 | DCO1 | DCO2;
   BCSCTL1 = XT2OFF | RSEL0 | RSEL1 | RSEL2 | RSEL3;
-  BCSCTL2 = 0;
+  BCSCTL2 = DIVS_1;
   BCSCTL3 = 0;
 
 
   timeInit();
   schInit();
+  inverterCtrlInit();
 
   // schAdd(displayExec, NULL, 0, DISPLAY_CYCLE);
 
 
   __enable_interrupt();
 
+  inverterCtrlSetFrequency(50);
+
+
   while (1) {
     schExec();
   }