264 lines
5.9 KiB
C
264 lines
5.9 KiB
C
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#include "stm32f1xx_hal.h"
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#include "defines.h"
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#include "setup.h"
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#include "config.h"
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volatile int posl = 0;
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volatile int posr = 0;
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volatile int pwml = 0;
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volatile int pwmr = 0;
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volatile int weakl = 0;
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volatile int weakr = 0;
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extern volatile int speed;
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extern volatile adc_buf_t adc_buffer;
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extern volatile uint32_t timeout;
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uint8_t buzzerFreq = 0;
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uint8_t buzzerPattern = 0;
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uint8_t enable = 0;
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const int pwm_res = 64000000 / 2 / PWM_FREQ; // = 2000
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const uint8_t hall_to_pos[8] = {
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0,
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0,
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2,
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1,
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4,
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5,
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3,
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0,
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};
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inline void blockPWM(int pwm, int pos, int *u, int *v, int *w) {
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switch(pos) {
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case 0:
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*u = 0;
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*v = pwm;
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*w = -pwm;
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break;
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case 1:
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*u = -pwm;
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*v = pwm;
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*w = 0;
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break;
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case 2:
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*u = -pwm;
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*v = 0;
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*w = pwm;
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break;
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case 3:
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*u = 0;
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*v = -pwm;
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*w = pwm;
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break;
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case 4:
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*u = pwm;
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*v = -pwm;
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*w = 0;
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break;
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case 5:
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*u = pwm;
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*v = 0;
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*w = -pwm;
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break;
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default:
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*u = 0;
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*v = 0;
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*w = 0;
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}
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}
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inline void blockPhaseCurrent(int pos, int u, int v, int *q) {
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switch(pos) {
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case 0:
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*q = u - v;
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// *u = 0;
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// *v = pwm;
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// *w = -pwm;
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break;
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case 1:
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*q = u;
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// *u = -pwm;
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// *v = pwm;
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// *w = 0;
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break;
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case 2:
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*q = u;
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// *u = -pwm;
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// *v = 0;
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// *w = pwm;
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break;
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case 3:
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*q = v;
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// *u = 0;
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// *v = -pwm;
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// *w = pwm;
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break;
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case 4:
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*q = v;
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// *u = pwm;
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// *v = -pwm;
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// *w = 0;
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break;
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case 5:
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*q = -(u - v);
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// *u = pwm;
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// *v = 0;
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// *w = -pwm;
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break;
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default:
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*q = 0;
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// *u = 0;
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// *v = 0;
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// *w = 0;
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}
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}
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uint16_t buzzerTimer = 0;
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int offsetcount = 0;
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int offsetrl1 = 2000;
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int offsetrl2 = 2000;
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int offsetrr1 = 2000;
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int offsetrr2 = 2000;
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int offsetdcl = 2000;
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int offsetdcr = 2000;
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float batteryVoltage = 40.0;
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int curl = 0;
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// int errorl = 0;
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// int kp = 5;
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// volatile int cmdl = 0;
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int last_pos = 0;
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int timer = 0;
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const int max_time = PWM_FREQ / 10;
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volatile int vel = 0;
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//scan 8 channels with 2ADCs @ 20 clk cycles per sample
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//meaning ~80 ADC clock cycles @ 8MHz until new DMA interrupt =~ 100KHz
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//=640 cpu cycles
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void DMA1_Channel1_IRQHandler() {
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DMA1->IFCR = DMA_IFCR_CTCIF1;
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// HAL_GPIO_WritePin(LED_PORT, LED_PIN, 1);
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if(offsetcount < 1000) { // calibrate ADC offsets
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offsetcount++;
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offsetrl1 = (adc_buffer.rl1 + offsetrl1) / 2;
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offsetrl2 = (adc_buffer.rl2 + offsetrl2) / 2;
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offsetrr1 = (adc_buffer.rr1 + offsetrr1) / 2;
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offsetrr2 = (adc_buffer.rr2 + offsetrr2) / 2;
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offsetdcl = (adc_buffer.dcl + offsetdcl) / 2;
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offsetdcr = (adc_buffer.dcr + offsetdcr) / 2;
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return;
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}
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if (buzzerTimer % 100 == 0) {
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batteryVoltage = batteryVoltage * 0.999 + ((float)adc_buffer.batt1 * ADC_BATTERY_VOLT) * 0.001;
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}
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#ifdef BEEPS_BACKWARD
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if (speed < -50 && enable == 1) {
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buzzerFreq = 5;
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buzzerPattern = 1;
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} else if (enable == 1) {
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buzzerFreq = 0;
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buzzerPattern = 1;
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}
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#endif
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//disable PWM when current limit is reached (current chopping)
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if(ABS((adc_buffer.dcl - offsetdcl) * MOTOR_AMP_CONV_DC_AMP) > DC_CUR_LIMIT || timeout > TIMEOUT || enable == 0) {
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LEFT_TIM->BDTR &= ~TIM_BDTR_MOE;
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//HAL_GPIO_WritePin(LED_PORT, LED_PIN, 1);
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} else {
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LEFT_TIM->BDTR |= TIM_BDTR_MOE;
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//HAL_GPIO_WritePin(LED_PORT, LED_PIN, 0);
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}
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if(ABS((adc_buffer.dcr - offsetdcr) * MOTOR_AMP_CONV_DC_AMP) > DC_CUR_LIMIT || timeout > TIMEOUT || enable == 0) {
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RIGHT_TIM->BDTR &= ~TIM_BDTR_MOE;
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} else {
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RIGHT_TIM->BDTR |= TIM_BDTR_MOE;
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}
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int ul, vl, wl;
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int ur, vr, wr;
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//determine next position based on hall sensors
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uint8_t hall_ul = !(LEFT_HALL_U_PORT->IDR & LEFT_HALL_U_PIN);
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uint8_t hall_vl = !(LEFT_HALL_V_PORT->IDR & LEFT_HALL_V_PIN);
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uint8_t hall_wl = !(LEFT_HALL_W_PORT->IDR & LEFT_HALL_W_PIN);
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uint8_t hall_ur = !(RIGHT_HALL_U_PORT->IDR & RIGHT_HALL_U_PIN);
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uint8_t hall_vr = !(RIGHT_HALL_V_PORT->IDR & RIGHT_HALL_V_PIN);
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uint8_t hall_wr = !(RIGHT_HALL_W_PORT->IDR & RIGHT_HALL_W_PIN);
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uint8_t halll = hall_ul * 1 + hall_vl * 2 + hall_wl * 4;
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posl = hall_to_pos[halll];
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posl += 2;
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posl %= 6;
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uint8_t hallr = hall_ur * 1 + hall_vr * 2 + hall_wr * 4;
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posr = hall_to_pos[hallr];
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posr += 2;
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posr %= 6;
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blockPhaseCurrent(posl, adc_buffer.rl1 - offsetrl1, adc_buffer.rl2 - offsetrl2, &curl);
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//setScopeChannel(2, (adc_buffer.rl1 - offsetrl1) / 8);
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//setScopeChannel(3, (adc_buffer.rl2 - offsetrl2) / 8);
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//create square wave for buzzer
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buzzerTimer++;
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if (buzzerFreq != 0 && (buzzerTimer / 5000) % (buzzerPattern + 1) == 0) {
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if (buzzerTimer % buzzerFreq == 0) {
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HAL_GPIO_TogglePin(BUZZER_PORT, BUZZER_PIN);
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}
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} else {
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HAL_GPIO_WritePin(BUZZER_PORT, BUZZER_PIN, 0);
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}
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//update PWM channels based on position
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blockPWM(pwml, posl, &ul, &vl, &wl);
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blockPWM(pwmr, posr, &ur, &vr, &wr);
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int weakul, weakvl, weakwl;
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if (pwml > 0) {
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blockPWM(weakl, (posl+5) % 6, &weakul, &weakvl, &weakwl);
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} else {
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blockPWM(-weakl, (posl+1) % 6, &weakul, &weakvl, &weakwl);
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}
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ul += weakul;
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vl += weakvl;
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wl += weakwl;
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int weakur, weakvr, weakwr;
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if (pwmr > 0) {
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blockPWM(weakr, (posr+5) % 6, &weakur, &weakvr, &weakwr);
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} else {
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blockPWM(-weakr, (posr+1) % 6, &weakur, &weakvr, &weakwr);
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}
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ur += weakur;
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vr += weakvr;
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wr += weakwr;
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LEFT_TIM->LEFT_TIM_U = CLAMP(ul + pwm_res / 2, 10, pwm_res-10);
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LEFT_TIM->LEFT_TIM_V = CLAMP(vl + pwm_res / 2, 10, pwm_res-10);
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LEFT_TIM->LEFT_TIM_W = CLAMP(wl + pwm_res / 2, 10, pwm_res-10);
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RIGHT_TIM->RIGHT_TIM_U = CLAMP(ur + pwm_res / 2, 10, pwm_res-10);
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RIGHT_TIM->RIGHT_TIM_V = CLAMP(vr + pwm_res / 2, 10, pwm_res-10);
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RIGHT_TIM->RIGHT_TIM_W = CLAMP(wr + pwm_res / 2, 10, pwm_res-10);
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}
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