139 lines
3.0 KiB
C++
139 lines
3.0 KiB
C++
/*
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* Phytotron
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* lecture des capteurs de temperature LM35
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*/
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/* -------------------------------------------------- */
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#define NBVAL 4
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#define DELAI 1000
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#define RELAIS_FRIGO 42
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#define RELAIS_VENTILO 40
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#define prt(a) Serial.print(a)
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#define prtln(a) Serial.println(a)
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typedef struct {
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unsigned short magic;
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char tag[4];
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short delai;
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short temp_maxi;
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short temp_mini;
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short control;
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} Global;
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Global parametres;
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/* -------------------------------------------------- */
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void setup() {
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Serial.begin(9600);
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pinMode(LED_BUILTIN, OUTPUT);
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pinMode(RELAIS_FRIGO, OUTPUT);
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pinMode(RELAIS_VENTILO, OUTPUT);
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Serial.print("\n");
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/* XXX */
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/* changing the voltage reference of the ADC
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* greatly increase the prcision on the limited
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* range of our temperatures.
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*/
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analogReference(INTERNAL1V1); // Pour Arduino Mega2560
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Serial.print("\n");
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read_config(0, ¶metres);
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// display_config(¶metres);
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Serial.print("M running now\n");
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}
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/* ================================================== */
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/*
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* the light captor is on A4 pin
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*/
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void readlight(void)
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{
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short value;
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delay(100);
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value = analogRead(A4);
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Serial.print("L ");
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Serial.print(value);
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Serial.print('\n');
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}
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/* ================================================== */
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short adc_pins[] = { A0, A1, A2, A3 };
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#define NB_PASSE 4
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/* -------------------------------------------------- */
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void updatevalues(short *ptr)
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{
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short foo, pass;
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for (foo=0; foo<NBVAL; foo++) { ptr[foo] = 0; }
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digitalWrite(LED_BUILTIN, HIGH);
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for (pass=0; pass<NB_PASSE; pass++) {
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for (foo=0; foo<NBVAL; foo++) {
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ptr[foo] += analogRead(adc_pins[foo]);
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delay(50);
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}
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}
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for (foo=0; foo<NBVAL; foo++) { ptr[foo] /= NB_PASSE; }
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digitalWrite(LED_BUILTIN, LOW);
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}
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/* -------------------------------------------------- */
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void sendvalues(short *ptr)
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{
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int foo;
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Serial.print("T");
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for (foo=0; foo<NBVAL; foo++) {
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Serial.print(" ");
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Serial.print(ptr[foo]);
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}
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Serial.print('\n');
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}
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/* -------------------------------------------------- */
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void update_and_send(void)
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{
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short values[NBVAL];
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updatevalues(values);
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sendvalues(values);
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}
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/* ================================================== */
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void loop() {
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static int foo = 0;
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int key;
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update_and_send();
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if (foo++ > 5) {
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readlight(); foo = 0;
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}
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/* check for external request */
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if (Serial.available()) {
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key = Serial.read();
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switch (key) {
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case 'U':
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Serial.println("M cli request");
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phytocli();
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break;
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case '+': /* allume le frigo */
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controle_frigo(1);
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break;
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case '-': /* eteint le frigo */
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controle_frigo(0);
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break;
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default:
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prtln("M bad control code");
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break;
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}
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}
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delay(DELAI);
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/* ETERNAL LOOP END HERE */
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}
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/* -------------------------------------------------- */
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