reflow/reflowctl/reflowctl.ino

95 lines
2.0 KiB
Arduino
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unsigned int time = 0; // profile seconds
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unsigned int temperatur = 25; // actual oven temp
unsigned int last_temperatur = 25;
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unsigned int Ts_max = 200; // °C
unsigned int Ts_min = 150; // °C
unsigned int Tp = 260; // 245-260°C
unsigned int rampup_rate = 3; // 3°C/s
unsigned int preheat_duration = 100; // 60-180s
unsigned int tal = 217; // 217°C
unsigned int tal_duration = 100; // 60-150s
unsigned int peak_duration = 30; // 20-40s
unsigned int rampdown_max = 6; // 6°C/s max
unsigned int time_max = 480; // 8*60s max
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#define START_STATE 0
#define PREHEAT_STATE 1
#define TAL_STATE 2
#define MAX_STATE 3
#define RAMPDOWN_STATE 4
#define END_STATE 5
#define ERROR_STATE 6
byte state = START_STATE;
unsigned int Ts_min_time = 0;
unsigned int Ts_max_time = 0;
unsigned int Tl_time = 0;
unsigned int Tp_time = 0;
unsigned int Tl_end_time = 0;
#define RAMPUP_TOO_FAST 1
#define RAMPDOWN_TOO_FAST 2
unsigned int error_condition = 0;
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void setup() {
pinMode(13, OUTPUT);
Serial.begin(9600);
}
void get_temp() {
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// simulating an +1K/s rampup oven
last_temperatur = ++temperatur;
}
boolean check_rampup_rate() {
if (temperatur - last_temperatur > rampup_rate) {
error_condition = RAMPUP_TOO_FAST;
return false;
}
return true;
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}
void loop() {
time = millis() / 1000;
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get_temp();
Serial.print(time);
Serial.print(" ");
Serial.print(temperatur);
Serial.print(" ");
Serial.println(last_temperatur);
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// wait a second so as not to send massive amounts of data
delay(1000);
switch (state) {
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case START_STATE:
// going from room temp to preheat, nothing to check here
if (!check_rampup_rate())
goto error;
if (temperatur > Ts_min) {
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state++;
}
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case PREHEAT_STATE:
if (temperatur > Ts_max)
state++;
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break;
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case TAL_STATE:
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break;
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case MAX_STATE:
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break;
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case RAMPDOWN_STATE:
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break;
default:
break;
}
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error:
state = END_STATE;
Serial.println(error_condition);
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}