Andrew Klimenyuk
STM32F103C8T6_WIFI_Heating_system
Dependencies: mbed mbed-STM32F103C8T6 eeprom_flash Watchdog PinDetect DS1820
- Bluepill STM32F103C8T6 Heating system
- _This project is core part of bigger heating system project!_
Features
- Reading temperature from four DS18B20 sensors
- Making a decision about switching on/off heater and pomp
- Executing simple user commands from UART
- Storing state parameters to program memory (EEPROM emulation)
Diff: temp_controller/temp_controller.cpp
- Revision:
- 49:f9f65a2fc92f
- Parent:
- 48:4ec055c066b4
- Child:
- 50:94730b99ea41
diff -r 4ec055c066b4 -r f9f65a2fc92f temp_controller/temp_controller.cpp
--- a/temp_controller/temp_controller.cpp Sun Sep 23 18:54:12 2018 +0000
+++ b/temp_controller/temp_controller.cpp Sun Sep 23 19:59:48 2018 +0000
@@ -5,6 +5,7 @@
extern DigitalOut myled;
extern DigitalOut pomp_OFF;
extern DigitalOut heater_OFF;
+extern EventQueue queue;
extern unsigned int eeprom_config_value;
@@ -67,9 +68,20 @@
// 0 - OFF - heating off, pomp and heater are OFF
// 1 - ECO - eco heating
// 2 - STANDART - standart heating
- // 3 - SIMULATOR - simulator mode - work on simulated_temp
- // 4 - POMP - pomp is ON, heater is OFF
- // 5 - FULL - pomp and heater are ON
+ // 3 - ECO SIMULATOR - eco simulator mode - work on eco simulated_temp
+ // 4 - SIMULATOR - simulator mode - work on simulated_temp
+ // 5 - POMP - pomp is ON, heater is OFF
+ // 6 - EMERGENCY - pomp and heater are ON
+
+char pomp_was_delayed = 0;
+
+void delayed_pomp_off(){
+ if (pomp_was_delayed == 1) {
+ pomp_OFF = 1;
+ };
+ pomp_was_delayed = 0;
+ //pc.printf("delayed_pomp_off\r\n");
+};
void start_temp(){
@@ -89,6 +101,7 @@
void check_temp(){
+ int error_flag = 0;
myled = 0; // turn the LED on
// kick the watchdog
@@ -97,11 +110,16 @@
__disable_irq();
for ( int j=0; j < 5; j++ ) {
-
temp_error[j] = ds1820[j].read(temp[j]); // read temperature from DS1820 and perform cyclic redundancy check (CRC)
+ error_flag += temp_error[j];
ds1820[j].startConversion(); // start temperature conversion from analog to digital before next reading
};
+ if (error_flag > 0 && ( working_mode==1 || working_mode==2 ) ){
+ // set EMERGENCY mode - pomp and heater are ON if sensors are bad
+ working_mode = 6;
+ };
+
// save new config if it was changed
if (readEEPROMWord(0)!= eeprom_config_value) {
@@ -214,7 +232,14 @@
if (outdoor > min_litos_temp) {
// ============================================= SUMMER MODE
// system off
- pomp_OFF = 1;
+ if ( heater_OFF == 0 ) {
+ queue.call_in( 10000, delayed_pomp_off );
+ pomp_was_delayed = 1;
+ } else {
+ if ( pomp_was_delayed == 0 ) {
+ pomp_OFF = 1;
+ };
+ };
heater_OFF = 1;
} else if ( outdoor < 3) {
@@ -295,8 +320,15 @@
if (outdoor > min_litos_temp) {
//============================================ summer mode
// system off
- pomp_OFF = 1;
- heater_OFF = 1;
+ if ( heater_OFF == 0 ) {
+ queue.call_in( 10000, delayed_pomp_off );
+ pomp_was_delayed = 1;
+ } else {
+ if ( pomp_was_delayed == 0 ) {
+ pomp_OFF = 1;
+ };
+ };
+ heater_OFF = 1;
} else if (outdoor < 3) {
//============================================ winter mode