76 lines
1.6 KiB
C++
76 lines
1.6 KiB
C++
#include "clock.hpp"
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#include <stdio.h>
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#include "flash/flash.hpp"
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#include "io/io.hpp"
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#include "uart/uart.hpp"
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#define ADC_INT_VECTOR
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#include "adc/adc.hpp"
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#define UART0_INT_VECTORS
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#include "uart/hardware0.hpp"
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#include "pwm.hpp"
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#include "thermistor.hpp"
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template <typename T>
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T clamp(double value, T lower, T upper)
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{
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if (value < lower)
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return lower;
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if (value > upper)
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return upper;
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return static_cast<T>(value);
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}
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uint8_t temperatureCurve(double temperature)
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{
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double fanSpeed = (10 * temperature - 200) / 3;
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return clamp<uint8_t>(fanSpeed, 0, 100);
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}
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int main()
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{
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uart::Uart0<uart::Config<115200>> serial;
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serial.init();
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serial << F("Thermistor reader\r\n");
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using adc_conf = adc::Config<adc::SingleMode>;
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adc::Adc<adc_conf, io::P, io::P::C0> adcPin;
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adcPin.init();
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Thermistor temp;
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pwm::init();
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pwm::setDuty(100);
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while (true) {
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const auto adcSample = temp.sampleAdc(adcPin, 1000);
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const auto thermistorResistance = temp.getResistance(adcSample);
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const auto temperature = temp.getTemperature(thermistorResistance);
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const auto fanSpeed = temperatureCurve(temperature);
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char floatBuffer[16];
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sprintf(floatBuffer, "%.2f", adcSample);
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serial << F("Read ADC: ") << floatBuffer << F("\r\n");
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sprintf(floatBuffer, "%.2f", thermistorResistance);
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serial << F("Resistance: ") << floatBuffer << F("\r\n");
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sprintf(floatBuffer, "%.2f", temperature);
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serial << F("Temperature: ") << floatBuffer << F(" C \r\n");
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serial << F("Fan speed: ") << fanSpeed << F("%\r\n");
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pwm::setDuty(fanSpeed);
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_delay_ms(1000);
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}
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serial.flushTx();
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return 0;
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}
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