Cons-n-Stuff/PCB-reflow-solder-heat-plate
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Added better pin debouncing, voltage references, python parsing, groundtruth measurements

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This commit is contained in:
Nathan 2022-04-21 20:38:09 -07:00
parent 29451ad11f
commit 8649afd315
6 changed files with 13981 additions and 43 deletions
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3
.gitignore vendored
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@ -24,3 +24,6 @@ fp-info-cache
# Exported BOM files
*.xml
*.csv
# ipynb checkpoints
.ipynb_checkpoints

6497
Firmware/analysis/data/thermal_analysis1.log Normal file
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Firmware/analysis/data/thermal_analysis2.log Normal file
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Firmware/analysis/parser.ipynb Normal file
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20
Firmware/pcb_reflow_fw/pcb_reflow_fw.ino
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@ -68,7 +68,6 @@ volatile single_button_state_t dn_button_state = BUTTON_NO_ACTION;
volatile unsigned long up_state_change_time = 0;
volatile unsigned long down_state_change_time = 0;
// Temperature Info
byte max_temp_array[] = {140, 150, 160, 170, 180};
byte max_temp_index = 0;
@ -197,7 +196,6 @@ void upsw_change_isr() {
up_state_change_time = millis();
}
void setup() {
// Pin Direction control
@ -286,13 +284,9 @@ inline void setupSensors() {
}
}
inline void setFastPwm() {
analogWriteFrequency(64);
}
inline void setFastPwm() { analogWriteFrequency(64); }
inline void setVREF() {
analogReference(INTERNAL1V5);
}
inline void setVREF() { analogReference(INTERNAL1V5); }
inline bool isFirstBoot() {
uint8_t first_boot = EEPROM.read(FIRSTTIME_BOOT_ADDR);
@ -467,8 +461,10 @@ buttons_state_t getButtonsState() {
unsigned long cur_time = millis();
buttons_state_t state = BUTTONS_NO_PRESS;
if(button_dn == BUTTON_PRESSED && button_up == BUTTON_PRESSED && abs(button_dn_time - button_up_time) < BUTTON_PRESS_TIME) {
if(cur_time - button_dn_time > BUTTON_PRESS_TIME && cur_time - button_up_time > BUTTON_PRESS_TIME) {
if (button_dn == BUTTON_PRESSED && button_up == BUTTON_PRESSED &&
abs(button_dn_time - button_up_time) < BUTTON_PRESS_TIME) {
if (cur_time - button_dn_time > BUTTON_PRESS_TIME &&
cur_time - button_up_time > BUTTON_PRESS_TIME) {
state = BUTTONS_BOTH_PRESS;
noInterrupts();
dn_button_state = BUTTON_NO_ACTION;
@ -621,8 +617,8 @@ bool heat(byte max_temp, int profile_index) {
}
// Measure Values
// TODO(HEIDT) getting the temperature from the digital sensors is by far the slowest part of this loop.
// figure out an approach that allows control faster than sensing
// TODO(HEIDT) getting the temperature from the digital sensors is by far the slowest part
// of this loop. figure out an approach that allows control faster than sensing
t = getTemp();
v = getVolts();
float max_possible_amperage = v / bed_resistance;

57
Firmware/temperature_groundtruth_fw/temperature_groundtruth_fw.ino Normal file
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@ -0,0 +1,57 @@
#include <Adafruit_MAX31865.h>
// Use software SPI: CS, DI, DO, CLK
Adafruit_MAX31865 thermo = Adafruit_MAX31865(3, 4, 5, 6);
// The value of the Rref resistor. Use 430.0 for PT100 and 4300.0 for PT1000
#define RREF 430.0
// The 'nominal' 0-degrees-C resistance of the sensor
// 100.0 for PT100, 1000.0 for PT1000
#define RNOMINAL 100.0
void setup() {
Serial.begin(115200);
Serial1.begin(9600);
thermo.begin(MAX31865_3WIRE); // set to 2WIRE or 4WIRE as necessary
}
void loop() {
uint8_t fault = thermo.readFault();
if (fault) {
Serial.print("Fault 0x"); Serial.println(fault, HEX);
if (fault & MAX31865_FAULT_HIGHTHRESH) {
Serial.println("RTD High Threshold");
}
if (fault & MAX31865_FAULT_LOWTHRESH) {
Serial.println("RTD Low Threshold");
}
if (fault & MAX31865_FAULT_REFINLOW) {
Serial.println("REFIN- > 0.85 x Bias");
}
if (fault & MAX31865_FAULT_REFINHIGH) {
Serial.println("REFIN- < 0.85 x Bias - FORCE- open");
}
if (fault & MAX31865_FAULT_RTDINLOW) {
Serial.println("RTDIN- < 0.85 x Bias - FORCE- open");
}
if (fault & MAX31865_FAULT_OVUV) {
Serial.println("Under/Over voltage");
}
thermo.clearFault();
}
String s;
if (Serial1.available()) {
s = Serial1.readStringUntil('\n');
Serial.println(s);
}
if (s.indexOf("Temps") >= 0) {
Serial.print("Groundtruth ");
Serial.println(thermo.temperature(RNOMINAL, RREF));
}
}