86 lines
1.7 KiB
C++
86 lines
1.7 KiB
C++
#include <Arduino.h>
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#define EC_PIN_ADC 4
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#define EC_PIN_FREQ 5
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#define EC_PWM_CH 0
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#define EC_RESOLUTION 8
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#define EC_FREQUENCY 5000
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#define EC_ARRAY_SIZE 1024
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uint16_t ec_array[EC_ARRAY_SIZE];
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uint16_t ec_array_pos=0;
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unsigned long ec_last_read=0;
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#define EC_READ_INTERVAL 1
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unsigned long last_print=0;
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float getMean(uint16_t* parray);
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uint16_t getMin(uint16_t *parray);
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uint16_t getMax(uint16_t *parray);
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void setup() {
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Serial.begin(115200);
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pinMode(EC_PIN_ADC,INPUT);
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ledcSetup(EC_PWM_CH, EC_FREQUENCY, EC_RESOLUTION);
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ledcAttachPin(EC_PIN_FREQ, EC_PWM_CH);
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ledcWrite(EC_PWM_CH, 127);
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}
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void loop() {
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unsigned long loopmillis=millis();
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bool flag_print=false;
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if (loopmillis>ec_last_read+EC_READ_INTERVAL) {
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ec_last_read=loopmillis;
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ec_array_pos++;
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flag_print= ec_array_pos==EC_ARRAY_SIZE;
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ec_array_pos%=EC_ARRAY_SIZE;
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ec_array[ec_array_pos]=analogRead(EC_PIN_ADC);
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//Serial.print(ec_array[ec_array_pos]); Serial.print(" ");
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}
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//if (flag_print) {
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if (loopmillis>last_print+250) {
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last_print=loopmillis;
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Serial.print(getMean(ec_array),3);
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Serial.print("\t"); Serial.print(getMax(ec_array) - getMin(ec_array));
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Serial.println();
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}
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}
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float getMean(uint16_t *parray) {
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double mean=0;
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for (uint16_t i=0;i<EC_ARRAY_SIZE;i++) {
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mean+=parray[i];
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}
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return mean/EC_ARRAY_SIZE;
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}
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uint16_t getMin(uint16_t *parray) {
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uint16_t min=65535;
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for (uint16_t i=0;i<EC_ARRAY_SIZE;i++) {
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if (parray[i]<min) {
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min=parray[i];
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}
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}
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return min;
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}
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uint16_t getMax(uint16_t *parray) {
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uint16_t max=0;
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for (uint16_t i=0;i<EC_ARRAY_SIZE;i++) {
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if (parray[i]>max) {
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max=parray[i];
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}
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}
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return max;
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} |