states adjusted
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0161495ffb
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338a8de119
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@ -322,7 +322,7 @@ mkdir build
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cd build
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cmake ..
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make
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make reflowctl-upload
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make reflowctl-upload && ../serialmon.py
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</pre>
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</div>
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</body>
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@ -13,4 +13,4 @@ Then you have to install cmake, for the serialmon.py script python and pyserial.
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cd build
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cmake ..
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make
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make reflowctl-upload
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make reflowctl-upload && ../serialmon.py
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@ -1,4 +1,20 @@
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#define START_STATE 0
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#define PREHEAT_STATE 1
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#define RAMP_UP_STATE 2
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#define TAL_FIRST_STATE 3
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#define PEAK_STATE 4
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#define TAL_SECOND_STATE 5
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#define RAMPDOWN_STATE 6
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#define END_STATE 7
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#define ERROR_STATE 8
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// error conditions
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#define E_RAMPUP 1 // oven heats up too fast
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#define E_RAMPDOWN_TOO_FAST 2 // oven cools down too fast
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#define E_RAMPDOWN_TOO_SLOW 3 // oven cools down too slow
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#define E_TIME_MAX 4 // reflow process does take too long
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unsigned int time = 0; // profile seconds
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unsigned int temperatur = 25; // actual oven temp
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unsigned int last_temperatur = 25;
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@ -12,28 +28,18 @@ unsigned int tal = 217; // 217°C
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unsigned int tal_duration = 100; // 60-150s
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unsigned int peak_duration = 30; // 20-40s
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unsigned int rampdown_max = 6; // 6°C/s max
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unsigned int rampdown_min = 2; // 2°C/s max
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unsigned int time_max = 480; // 8*60s max
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#define START_STATE 0
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#define PREHEAT_STATE 1
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#define TAL_STATE 2
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#define MAX_STATE 3
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#define RAMPDOWN_STATE 4
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#define END_STATE 5
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#define ERROR_STATE 6
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byte state = START_STATE;
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unsigned int Ts_min_time = 0;
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unsigned int Ts_max_time = 0;
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unsigned int Tl_time = 0;
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unsigned int Tl_time_end = 0;
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unsigned int Tp_time = 0;
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unsigned int Tl_end_time = 0;
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#define RAMPUP_TOO_FAST 1
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#define RAMPDOWN_TOO_FAST 2
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unsigned int error_condition = 0;
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byte state = START_STATE;
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void setup() {
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pinMode(13, OUTPUT);
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@ -47,12 +53,40 @@ void get_temp() {
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boolean check_rampup_rate() {
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if (temperatur - last_temperatur > rampup_rate) {
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error_condition = RAMPUP_TOO_FAST;
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error_condition = E_RAMPUP;
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return false;
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}
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return true;
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}
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boolean check_rampdown_rate() {
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unsigned int dt = temperatur - last_temperatur;
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if (dt > rampdown_max) {
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error_condition = E_RAMPDOWN_TOO_FAST;
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return false;
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}
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if (dt < rampdown_min) {
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error_condition = E_RAMPDOWN_TOO_SLOW;
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return false;
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}
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return true;
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}
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boolean time_max_check() {
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if (time > time_max) {
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error_condition = E_TIME_MAX;
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return false;
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}
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}
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boolean check_tal_duration() {
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if (time > time_max) {
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error_condition = E_TIME_MAX;
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return false;
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}
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}
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void loop() {
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time = millis() / 1000;
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get_temp();
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@ -62,32 +96,38 @@ void loop() {
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Serial.print(" ");
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Serial.println(last_temperatur);
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delay(1000);
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switch (state) {
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case START_STATE:
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// going from room temp to preheat, nothing to check here
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if (!check_rampup_rate())
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goto error;
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if (temperatur > Ts_min) {
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Serial.println("Changed state to PREHEAT_STATE");
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Ts_min_time = time;
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state++;
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}
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case PREHEAT_STATE:
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if (temperatur > Ts_max) {
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Serial.println("Changed state to PREHEAT_STATE");
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Ts_max_time = time;
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state++;
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}
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break;
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case TAL_STATE:
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case TAL_FIRST_STATE:
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break;
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case MAX_STATE:
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case PEAK_STATE:
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break;
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case TAL_SECOND_STATE:
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break;
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case RAMPDOWN_STATE:
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break;
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case END_STATE:
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default:
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break;
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}
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delay(1000);
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return;
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error:
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