mirror of
https://github.com/DerSpatz/PCB-reflow-solder-heat-plate.git
synced 2024-11-30 18:24:37 +01:00
Added first time startup and CRC checks. Added better button handling
This commit is contained in:
Nathan
parent
4ac96d1a05
commit
737fb47c62
@ -59,11 +59,14 @@ enum buttons_state_t { BUTTONS_NO_PRESS, BUTTONS_BOTH_PRESS, BUTTONS_UP_PRESS, B
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// Temperature Info
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byte max_temp_array[] = {140, 150, 160, 170, 180};
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byte max_temp_index = 0;
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#define MAX_RESISTANCE 10.0
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// EEPROM storage locations
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#define TEMP_INDEX_ADDR 1
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#define RESISTANCE_INDEX_ADDR 2
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#define DIGITAL_TEMP_ID_ADDR 6
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#define CRC_ADDR 0
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#define FIRSTTIME_BOOT_ADDR 4
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#define TEMP_INDEX_ADDR 5
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#define RESISTANCE_INDEX_ADDR 6
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#define DIGITAL_TEMP_ID_ADDR 10
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// Voltage Measurement Info
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float vConvert = 52.00;
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@ -134,8 +137,8 @@ struct solder_profile_t {
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// profiles pulled from here: https://www.7pcb.com/blog/lead-free-reflow-profile.php
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#define NUM_PROFILES 2
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const static solder_profile_t profiles[NUM_PROFILES] = {
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{.points=4, .seconds={25, 105, 115, 155}, .fraction={.65, .78, .81, 1.00}},
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{.points=2, .seconds={162.0, 202.0}, .fraction={.95, 1.00}}};
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{.points = 4, .seconds = {25, 105, 115, 155}, .fraction = {.65, .78, .81, 1.00}},
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{.points = 2, .seconds = {162.0, 202.0}, .fraction = {.95, 1.00}}};
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// temperature must be within this range to move on to next step
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#define TARGET_TEMP_THRESHOLD 5.0
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@ -178,11 +181,13 @@ void setup() {
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pinMode(DNSW_PIN, INPUT);
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pinMode(TEMP_PIN, INPUT);
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pinMode(VCC_PIN, INPUT);
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pinMode(13, OUTPUT);
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digitalWrite(13, LOW);
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Serial.begin(115200);
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// Pull saved values from EEPROM
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max_temp_index = EEPROM.read(TEMP_INDEX_ADDR) % sizeof(max_temp_array);
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max_temp_index = getMaxTempIndex();
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// Enable Fast PWM with no prescaler
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setFastPwm();
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@ -191,14 +196,52 @@ void setup() {
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debugprintln("Showing startup");
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showLogo();
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debugprintln("Checking sensors");
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debugprintln("Checking sensors");
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// check onewire TEMP_PIN sensors
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setupSensors();
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debugprintln("Checking first boot");
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if (isFirstBoot() || !validateCRC()) {
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doSetup();
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}
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debugprintln("Entering main menu");
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// Go to main menu
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mainMenu();
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}
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void updateCRC() {
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uint32_t new_crc = eepromCRC();
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setCRC(new_crc);
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}
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bool validateCRC() {
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uint32_t stored_crc;
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EEPROM.get(CRC_ADDR, stored_crc);
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uint32_t calculated_crc = eepromCRC();
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debugprint("got CRCs, stored: ");
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debugprint(stored_crc);
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debugprint(", calculated: ");
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debugprintln(calculated_crc);
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return stored_crc == calculated_crc;
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}
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void setCRC(uint32_t new_crc) { EEPROM.put(CRC_ADDR, new_crc); }
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uint32_t eepromCRC(void) {
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static const uint32_t crc_table[16] = {0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
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0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
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0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
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0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c};
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uint32_t crc = ~0L;
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// Skip first 4 bytes of EEPROM as thats where we store the CRC
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for (int index = 4; index < EEPROM.length(); ++index) {
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crc = crc_table[(crc ^ EEPROM[index]) & 0x0f] ^ (crc >> 4);
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crc = crc_table[(crc ^ (EEPROM[index] >> 4)) & 0x0f] ^ (crc >> 4);
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crc = ~crc;
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}
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return crc;
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}
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inline void setupSensors() {
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@ -216,24 +259,99 @@ inline void setFastPwm() {
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TCCR2B = _BV(CS20);
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}
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void showLogo() {
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display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
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display.clearDisplay();
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display.setTextSize(1);
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display.setTextColor(SSD1306_WHITE);
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display.setCursor(0, 0);
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display.drawBitmap(0, 0, logo, logo_width, logo_height, SSD1306_WHITE);
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display.setCursor(80, 16);
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display.print(F("S/W V"));
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display.print(sw, 1);
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display.setCursor(80, 24);
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display.print(F("H/W V"));
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display.print(hw, 1);
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display.display();
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delay(2000);
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inline bool isFirstBoot() {
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uint8_t first_boot = EEPROM.read(FIRSTTIME_BOOT_ADDR);
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debugprint("Got first boot flag: ");
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debugprintln(first_boot);
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return first_boot != 1;
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}
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void mainMenu() {
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inline void setFirstBoot() {
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EEPROM.write(FIRSTTIME_BOOT_ADDR, 1);
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updateCRC();
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}
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inline float getResistance() {
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float f;
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return EEPROM.get(RESISTANCE_INDEX_ADDR, f);
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return f;
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}
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inline void setResistance(float resistance) {
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EEPROM.put(TEMP_INDEX_ADDR, resistance);
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updateCRC();
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}
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inline void setMaxTempIndex(int index) {
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EEPROM.update(TEMP_INDEX_ADDR, index);
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updateCRC();
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}
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inline int getMaxTempIndex(void) { return EEPROM.read(TEMP_INDEX_ADDR) % sizeof(max_temp_array); }
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void showLogo() {
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unsigned long start_time = millis();
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display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
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while(start_time + 2000 > millis()) {
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display.clearDisplay();
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display.setTextSize(1);
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display.setTextColor(SSD1306_WHITE);
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display.setCursor(0, 0);
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display.drawBitmap(0, 0, logo, logo_width, logo_height, SSD1306_WHITE);
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display.setCursor(80, 16);
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display.print(F("S/W V"));
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display.print(sw, 1);
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display.setCursor(80, 24);
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display.print(F("H/W V"));
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display.print(hw, 1);
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display.display();
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buttons_state_t cur_button = getButtonsState();
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if(cur_button == BUTTONS_BOTH_PRESS) {
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doSetup();
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return;
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}
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}
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}
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inline void doSetup() {
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debugprintln("Performing setup");
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// TODO(HEIDT) show an info screen if we're doing firstime setup or if memory is corrupted
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getColdResistance();
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// TODO(HEIDT) do a temperature module setup here
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setFirstBoot();
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}
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inline void getColdResistance() {
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float resistance = 0.9;
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while (1) {
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clearMainMenu();
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display.setCursor(3, 4);
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display.print(F("Resistance"));
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display.drawLine(3, 12, 79, 12, SSD1306_WHITE);
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display.setCursor(3, 14);
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display.print(F("UP/DN: change"));
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display.setCursor(3, 22);
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display.print(F("BOTH: choose"));
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buttons_state_t button = getButtonsState();
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if (button == BUTTONS_UP_PRESS) {
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resistance += 0.1;
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} else if (button == BUTTONS_DN_PRESS) {
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resistance -= 0.1;
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} else if (button == BUTTONS_BOTH_PRESS) {
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setResistance(resistance);
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return;
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}
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resistance = constrain(resistance, 0, MAX_RESISTANCE);
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display.setCursor(90, 12);
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display.print(resistance);
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display.display();
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}
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}
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inline void mainMenu() {
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// Debounce
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while (!digitalRead(UPSW_PIN) || !digitalRead(DNSW_PIN))
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;
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@ -277,7 +395,7 @@ void mainMenu() {
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if (max_temp_index < sizeof(max_temp_array) - 1) {
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max_temp_index++;
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debugprintln("incrementing max temp");
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EEPROM.update(TEMP_INDEX_ADDR, max_temp_index);
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setMaxTempIndex(max_temp_index);
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}
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cur_state = MENU_IDLE;
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} break;
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@ -285,7 +403,7 @@ void mainMenu() {
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if (max_temp_index > 0) {
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max_temp_index--;
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debugprintln("decrementing max temp");
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EEPROM.update(TEMP_INDEX_ADDR, max_temp_index);
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setMaxTempIndex(max_temp_index);
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}
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cur_state = MENU_IDLE;
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} break;
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@ -301,6 +419,8 @@ void mainMenu() {
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// TODO(HEIDT) change to a down-up model or we'll loop forever in these cases
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buttons_state_t getButtonsState() {
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const unsigned long timeout = 1000;
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buttons_state_t state = BUTTONS_NO_PRESS;
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if (digitalRead(UPSW_PIN) && digitalRead(DNSW_PIN)) {
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state = BUTTONS_NO_PRESS;
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@ -308,17 +428,20 @@ buttons_state_t getButtonsState() {
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delay(100);
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if (!digitalRead(UPSW_PIN) && !digitalRead(DNSW_PIN)) {
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state = BUTTONS_BOTH_PRESS;
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} else if (digitalRead(UPSW_PIN)) {
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} else if (!digitalRead(UPSW_PIN)) {
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state = BUTTONS_UP_PRESS;
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} else {
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state = BUTTONS_DN_PRESS;
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}
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}
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// wait for up on both switches
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// TODO(HEIDT) holding down switches will block execution flow, address
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while (!digitalRead(UPSW_PIN) || !digitalRead(DNSW_PIN))
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;
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// wait for up on both switches, timeout if not released within a second
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unsigned long start_time = millis();
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while (!digitalRead(UPSW_PIN) || !digitalRead(DNSW_PIN)) {
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if (millis() > start_time + timeout) {
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return BUTTONS_NO_PRESS;
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}
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}
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return state;
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}
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@ -363,7 +486,6 @@ inline void displayProfileRight(int8_t cur_profile) {
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display.drawLine(cur_x, cur_y, x_next, y_next, SSD1306_WHITE);
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cur_x = x_next;
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cur_y = y_next;
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}
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// draw down to finish TEMP_PIN
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display.drawLine(cur_x, cur_y, SCREEN_WIDTH - 2, 30, SSD1306_WHITE);
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@ -464,7 +586,7 @@ bool heat(byte max_temp, int profile_index) {
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float time_into_step = ((float)millis() / 1000.0) - (float)step_start_time;
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float target_temp = min(
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((goal_temp - start_temp) * (time_into_step / step_runtime)) + start_temp, goal_temp);
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// TODO(HEIDT) PID for a ramp will always lag, other options may be better
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stepPID(target_temp, t, last_temp, time_into_step - last_time);
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last_time = time_into_step;
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