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application: add bed temperatures (WIP)

This commit is contained in:
King Kévin 2020-12-08 23:13:37 +01:00
parent b071eb6737
commit 8b62d16436
1 changed files with 40 additions and 17 deletions
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57
application.c
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@ -337,12 +337,41 @@ static float bed_tophalf_temperature(void)
// convert to °C
// calibrated using a DS18B20 (accuracy = +- 0.5°C), with 12-bit precision
// 558 = 19.500 °C, 1624 = 50.625, 2850 = 82.250
// 616 = 21.8 C, 2926 = 83.625
// 558 = 19.500 °C, 616 = 21.8 °C, 1624 = 50.625 °C, 2850 = 82.250 °C, 2926 = 83.625 °C
return measurement * 0.0273778 + 4.22317;
return measurement * 0.0270798 + 4.38946;
}
/** read bed bottom half temperature
* @return temperature in °C
*/
static float bed_bothalf_temperature(void)
{
const uint16_t measurement = sensor_max1247_read(1); // read measured value from corresponding thermistor
// convert to °C
// calibrated using a DS18B20 (accuracy = +- 0.5°C), with 12-bit precision
// 549 = 19.312 °C, 12 = 63.3 °C
return measurement * 0.0270798 + 4.38946;
}
/** read bed tube temperature
* @return temperature in °C
*/
/*
static float bed_tube_temperature(void)
{
const uint16_t measurement = sensor_max1247_read(3); // read measured value from corresponding thermistor
// convert to °C
// calibrated using a DS18B20 (accuracy = +- 0.5°C), with 12-bit precision
// 19.312 °C = 564
return measurement * 0.0270798 + 4.38946;
}
*/
/** read heat sink temperature
* @return temperature in °C
*/
@ -352,14 +381,11 @@ static float bed_heatsink_temperature(void)
// convert to °C
// calibrated using a DS18B20 (accuracy = +- 0.5°C), with 12-bit precision
//
// 557 = 19.312 °C, 1624 = 50.625 °C
return measurement * 0.0273778 + 4.22317; // TODO this values are from the bed top half
return measurement * 0.0273778 + 4.22317;
}
// bottom 12 = 63.3 °C
// heat sink
/** run PID control for bed temperature (using the top half) */
static void bed_pid(void)
{
@ -403,10 +429,6 @@ static void bed_pid(void)
tec_power((uint16_t)power); // set power
}
// bottom 19.312 = 549
// sink 19.312 = 557
// tube 19.312 = 564
/** display available commands
* @param[in] argument no argument required
*/
@ -1020,10 +1042,11 @@ void main(void)
// read temperatures
const float lid_temp = lid_temperature();
const float heatsink_temp = bed_heatsink_temperature();
const float bed_temp = bed_tophalf_temperature();
const float top_temp = bed_tophalf_temperature();
const float bot_temp = bed_bothalf_temperature();
// read bed temperatures
printf("bed: top=%.2f, bottom=%u, sink=%u %.02f, tube=%u; 393-A=%u; 339-3=%u\n", bed_temp, sensor_max1247_read(1), sensor_max1247_read(2), heatsink_temp, sensor_max1247_read(3), gpio_get(GPIO_PORT(BED_PIN_393A), GPIO_PIN(BED_PIN_393A)) ? 1 : 0, gpio_get(GPIO_PORT(BED_PIN_3393), GPIO_PIN(BED_PIN_3393)) ? 1 : 0);
printf("lid: %.02f V\n", lid_temp);
printf("bed: top=%u %.2f, bottom=%u %.02f, sink=%u %.02f, tube=%u; 393-A=%u; 339-3=%u\n",sensor_max1247_read(0), top_temp, sensor_max1247_read(1), bot_temp, sensor_max1247_read(2), heatsink_temp, sensor_max1247_read(3), gpio_get(GPIO_PORT(BED_PIN_393A), GPIO_PIN(BED_PIN_393A)) ? 1 : 0, gpio_get(GPIO_PORT(BED_PIN_3393), GPIO_PIN(BED_PIN_3393)) ? 1 : 0);
printf("lid: %.04f °C\n", lid_temp);
if (ds18b20_present) {
const float temp = sensor_ds18b20_temperature(0); // get temperature
sensor_ds18b20_convert(0); // start next conversion (since it takes almost 1 s)
@ -1032,9 +1055,9 @@ void main(void)
// time to check if everything is OK
if (!error && STATE_SAFE != state) { // only check if we are not in the safe state
// check lid temperature
if (lid_temp < 5.0) { // voltage is at the upper limit (3.3V), meaning it is directly connected to the 5V pull-up resistor, and the lid thermistor does not pull it to ground
if (lid_temp < 5.0) { // voltage is at the upper limit (3.3V), meaning it is directly connected to the 3.3V pull-up resistor, and the lid thermistor does not pull it to ground
error = "lid thermistor is probably not connected";
} else if (lid_temp > 100) {
} else if (lid_temp > 100.0) {
error = "lid is getting too warm";
}
// check fan