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This commit is contained in:
Wolfgang Hottgenroth 2016-09-23 17:04:06 +02:00
parent 8a3d721314
commit 8c9151a143
3 changed files with 16 additions and 6 deletions

BIN
doc/Berechnungen.xlsx

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20
src/inverter.c

@ -13,19 +13,29 @@
#include "inverter.h" #include "inverter.h"
#define NUM_OF_SINE_VALUES 10 #define NUM_OF_SINE_VALUES 20
float sineValues[NUM_OF_SINE_VALUES] = { float sineValues[NUM_OF_SINE_VALUES] = {
0.1564,
0.3090, 0.3090,
0.4540,
0.5878, 0.5878,
0.7071,
0.8090, 0.8090,
0.8910,
0.9511, 0.9511,
0.9877,
1.0000, 1.0000,
0.9877,
0.9511, 0.9511,
0.8910,
0.8090, 0.8090,
0.7071,
0.5878, 0.5878,
0.4540,
0.3090, 0.3090,
0.0000, 0.1564,
0.0000
}; };
volatile uint16_t pulseWidths[NUM_OF_SINE_VALUES * 2] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }; volatile uint16_t pulseWidths[NUM_OF_SINE_VALUES * 2] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
@ -72,7 +82,7 @@ void inverterInit() {
P2DIR |= BIT0; P2DIR |= BIT0;
P2SEL |= BIT0; P2SEL |= BIT0;
TA1CTL = MC_1 | ID_1 | TASSEL_2 | TACLR; TA1CTL = MC_1 | ID_0 | TASSEL_2 | TACLR;
TA1CCTL0 = CCIE | OUTMOD_4; TA1CCTL0 = CCIE | OUTMOD_4;
TA1CCTL1 = CCIE; TA1CCTL1 = CCIE;
TA1CCR0 = 0; TA1CCR0 = 0;
@ -81,13 +91,13 @@ void inverterInit() {
void inverterSetFrequency(uint16_t f) { void inverterSetFrequency(uint16_t f) {
float ff = (float)f; float ff = (float)f;
float slotLength = 100.0 / (ff * 9.8e-6 * 20); float slotLength = 2 / (ff * 200e-9 * NUM_OF_SINE_VALUES);
uint16_t sl = (uint16_t)slotLength; uint16_t sl = (uint16_t)slotLength;
uint8_t currentOffset = (activeOffset == 0) ? NUM_OF_SINE_VALUES : 0; uint8_t currentOffset = (activeOffset == 0) ? NUM_OF_SINE_VALUES : 0;
for (uint8_t i = 0; i < NUM_OF_SINE_VALUES; i++) { for (uint8_t i = 0; i < NUM_OF_SINE_VALUES; i++) {
uint16_t pw = (uint16_t)(slotLength * sineValues[i]); uint16_t pw = (uint16_t)(slotLength * sineValues[i]);
pulseWidths[i + currentOffset] = (pw == sl) ? (pw - 5) : pw; pulseWidths[i + currentOffset] = (pw == sl) ? (pw - 15) : pw;
} }
__disable_interrupt(); __disable_interrupt();

2
src/main.c

@ -30,7 +30,7 @@ int main() {
__enable_interrupt(); __enable_interrupt();
inverterSetFrequency(100); inverterSetFrequency(75);
while (1) { while (1) {
} }