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166 lines
2.9 KiB
166 lines
2.9 KiB
#include <common.h>
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#include <stdio.h>
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#include "utils/usart.h"
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#include "utils/timebase.h"
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#include "utils/debounce.h"
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#include "utils/str_utils.h"
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#include "init.h"
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#include "blink.h"
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#include "capture.h"
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// Gate state
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static bool gate_closed = false;
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static uint32_t gate_cnt = 0;
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float exposure_out, exposure_accum;
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uint32_t exposure_cnt;
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/** IRQ */
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void USART2_IRQHandler(void)
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{
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// RXIE enables also ORE - must handle ORE.
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if (USART2_SR & USART_SR_ORE) {
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USART2_SR &= ~USART_SR_ORE;
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}
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if (USART2_SR & USART_SR_RXNE) {
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blue_blink();
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// handle incoming char.
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char c = usart_rx_char(USART2);
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switch (c) {
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case 'g': // nulovat pocitadlo preruseni
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gate_cnt = 0;
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break;
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case 'm': // zvysit DAC hodnotu
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if (DAC_DHR12R1 < 4095) DAC_DHR12R1 += 117;
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break;
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case 'n': // snizit DAC hodnotu
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if (DAC_DHR12R1 > 0) DAC_DHR12R1 -= 117;
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break;
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case 'b': // zvysit PWM stridu
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if (TIM3_CCR1 < 1000) TIM3_CCR1 += 50;
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break;
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case 'd': // snizit PWM stridu
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if (TIM3_CCR1 > 0) TIM3_CCR1 -= 50;
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break;
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default:
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break;
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}
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USART2_SR ^= USART_SR_RXNE;
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}
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}
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// Gate close handler
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void gate_close(void)
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{
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gate_closed = 1;
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gate_cnt++;
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}
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// Gate open handler
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void gate_open(void)
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{
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gate_closed = 0;
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}
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/** Init peripherals; Called by startup script, before main() */
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void SystemInit(void)
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{
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init_clock();
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init_systick();
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init_gpios();
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init_usart();
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init_adc();
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init_dac();
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init_pwm1();
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register_periodic_task(green_toggle, 1000); // indicate running state
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register_debounced_pin(GPIOB, 11, gate_close, gate_open); // gate handler
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}
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int main(void)
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{
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char buf[200];
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usart_tx_string(USART2, "DAQ system started.\n");
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delay_ms(100);
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bool first = true;
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while (1) {
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float cels = measure_temp();
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float angle = measure_angle();
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float resis = measure_resistance();
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float expos = measure_exposure();
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// --- exposure averaging
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exposure_accum += expos;
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exposure_cnt++;
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if (exposure_cnt >= 5) {
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exposure_out = exposure_accum / exposure_cnt;
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exposure_accum = 0;
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exposure_cnt = 0;
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}
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if (first) {
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exposure_out = expos; // pretend it's averaged
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}
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// ---
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buf_reset(buf);
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buf_append_str(buf, "T ");
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buf_append_flt(buf, cels, 1);
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buf_append_str(buf, "°C | ");
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buf_append_str(buf, "An ");
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buf_append_flt(buf, angle, 1);
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buf_append_str(buf, "° | ");
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buf_append_str(buf, "R ");
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buf_append_flt(buf, resis, 1);
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buf_append_str(buf, " | ");
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buf_append_str(buf, "L ");
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buf_append_flt(buf, exposure_out, 1);
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buf_append_str(buf, "% | ");
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buf_append_str(buf, "G ");
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buf_append_str(buf, gate_closed ? "1" : "0");
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buf_append_str(buf, ", #");
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buf_append_int(buf, gate_cnt);
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buf_append_str(buf, " | ");
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buf_append_str(buf, "DA ");
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buf_append_int(buf, DAC_DHR12R1);
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buf_append_str(buf, " | ");
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buf_append_str(buf, "PWM ");
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buf_append_int(buf, TIM3_CCR1);
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buf_append_str(buf, "\n");
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usart_tx_string(USART2, buf);
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delay_ms(100);
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first = false;
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}
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}
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