SerialLogger.h

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#ifndef HUMIDISTAT_SERIALLOGGER_H
#define HUMIDISTAT_SERIALLOGGER_H
 
#include <stdint.h>
#include <etl/span.h>
 
#include "asprintf.h"
#include "control/SingleHumidistat.h"
#include "control/CascadeHumidistat.h"
#include "sensor/ThermistorReader.h"
 
template<class Humidistat_t>
class SerialLogger {
private:
    const Humidistat_t &humidistat;
    const etl::span<const ThermistorReader, 4> trs;
 
    // Can't specialize constexpr...
    static const char header[];
 
    const uint16_t interval;    
    unsigned long lastTime = 0; 
    bool ready = false;
 
    void log();
 
public:
    explicit SerialLogger(const Humidistat_t *humidistat, etl::span<const ThermistorReader, 4> trs, uint16_t interval)
            : humidistat(*humidistat), trs(trs), interval(interval) {}
 
    static void begin(uint32_t baud) {
        Serial.begin(baud);
        // Indicate that we're ready
        Serial.println("RDY");
    }
 
    void update() {
        // Listen for RDY signal
        if (Serial.available()) {
            char buf[8];
            size_t numRead = Serial.readBytesUntil('\r', buf, 7);
            buf[numRead] = '\0';
 
            if (strcmp(buf, "RDY") == 0) {
                // Print header and set ready state
                Serial.println(header);
                ready = true;
            }
        }
 
        if (ready) {
            if (millis() - lastTime >= interval) {
                lastTime = millis();
                log();
            }
        }
    }
};
 
template<>
const char SerialLogger<SingleHumidistat>::header[] = "Time Humidity Setpoint Temperature ControlValue T0 T1 T2 T3 "
                                                      "pTerm iTerm dTerm";
 
template<>
const char SerialLogger<CascadeHumidistat>::header[] = "Time PV SP T CV inner0PV inner0SP inner0CV inner1PV inner1SP "
                                                       "inner1CV pTerm iTerm dTerm inner0pTerm inner0iTerm inner0dTerm "
                                                       "inner1pTerm inner1iTerm inner1dTerm";
 
template<>
void SerialLogger<SingleHumidistat>::log() {
    double pTerm, iTerm, dTerm;
    humidistat.getTerms(pTerm, iTerm, dTerm);
 
    char *buf = asprintf("%lu %.2f %.2f %.2f %.4f %.2f %.2f %.2f %.2f %.4f %.4f %.4f",
                         lastTime,
                         humidistat.getHumidity(),
                         humidistat.sp,
                         humidistat.getTemperature(),
                         humidistat.cv,
                         trs[0].readTemp(),
                         trs[1].readTemp(),
                         trs[2].readTemp(),
                         trs[3].readTemp(),
                         pTerm,
                         iTerm,
                         dTerm
    );
 
    Serial.println(buf);
    delete buf;
}
 
template<>
void SerialLogger<CascadeHumidistat>::log() {
    double outerPTerm, outerITerm, outerDTerm;
    humidistat.getTerms(outerPTerm, outerITerm, outerDTerm);
 
    double innerPTerms[2], innerITerms[2], innerDTerms[2];
    humidistat.getInner(0)->getTerms(innerPTerms[0], innerITerms[0], innerDTerms[0]);
    humidistat.getInner(1)->getTerms(innerPTerms[1], innerITerms[1], innerDTerms[1]);
 
    char *buf = asprintf("%lu %.2f %.2f %.2f %.4f %.3f %.4f %.3f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f",
                         lastTime,
                         humidistat.getHumidity(),
                         humidistat.sp,
                         humidistat.getTemperature(),
                         humidistat.cv,
                         humidistat.getInner(0)->pv,
                         humidistat.getInner(0)->sp,
                         humidistat.getInner(0)->cv,
                         humidistat.getInner(1)->pv,
                         humidistat.getInner(1)->sp,
                         humidistat.getInner(1)->cv,
                         outerPTerm,
                         outerITerm,
                         outerDTerm,
                         innerPTerms[0],
                         innerITerms[0],
                         innerDTerms[0],
                         innerPTerms[1],
                         innerITerms[1],
                         innerDTerms[1]
    );
 
    Serial.println(buf);
    delete buf;
}
 
#endif //HUMIDISTAT_SERIALLOGGER_H