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: main.cpp
- Revision:
- 27:007e17df5ba0
- Parent:
- 26:750f21025bb9
- Child:
- 29:5940a80717e4
--- a/main.cpp Sat Sep 15 20:00:16 2018 +0000
+++ b/main.cpp Sun Sep 16 08:39:56 2018 +0000
@@ -1,9 +1,17 @@
#include "stm32f103c8t6.h"
#include "mbed.h"
+#include "mbed_events.h"
+#include <stdio.h>
#include "DS1820.h"
#include "PinDetect.h"
#include <string>
+// Create a queue that can hold a maximum of 32 events
+EventQueue queue(32 * EVENTS_EVENT_SIZE);
+// Create a thread that'll run the event queue's dispatch function
+//Thread t;
+
+
char a[128] = ""; // RX command buffer
char i = 0; // RX char pointer
static char recieved = 0;
@@ -11,6 +19,32 @@
Serial pc(PA_2, PA_3);
DigitalOut myled(LED1);
+
+float temp[5] = {
+ 85,85,85,85,85 // initial temperature
+ };
+
+int temp_error[5] = {
+ 0,0,0,0,0 // initial state
+ };
+
+string labels[5] = {
+ "OUTDOOR",
+ "LITOS",
+ "MEBEL",
+ "HOT WATER",
+ "BACK WATER"
+ };
+
+DS1820 ds1820[5] = {
+ DS1820(PA_9), // substitute PA_9 with actual mbed pin name connected to the OUTDOOR
+ DS1820(PA_8), // substitute PA_8 with actual mbed pin name connected to the INDOOR LITOS
+ DS1820(PA_7), // substitute PA_7 with actual mbed pin name connected to the INDOOR MEBEL
+ DS1820(PA_6), // substitute PA_6 with actual mbed pin name connected to the HOT WATER
+ DS1820(PA_5) // substitute PA_6 with actual mbed pin name connected to the HOT WATER
+ };
+
+
// This function is called when a character goes into the RX buffer.
void rxCallback() {
char c;
@@ -34,12 +68,70 @@
void pb_hit_interrupt (void) {
- //pc.printf("Button pressed\r\n");
+ pc.printf("Button pressed\r\n");
};
void pb_out_interrupt (void) {
- //pc.printf("Button unpressed\r\n");
+ pc.printf("Button unpressed\r\n");
};
+
+void start_temp(){
+ for ( int j=0; j < 5; j++ ) {
+ if(ds1820[j].begin()) {
+ ds1820[j].startConversion();
+ pc.printf("%s sensor present!\r\n", labels[j].c_str());
+ } else {
+ pc.printf("No %s sensor found!\r\n", labels[j].c_str());
+ };
+ };
+};
+
+void at_command(){
+ if (recieved == 1) {
+
+ // command was recieved
+ pc.printf(a);
+ pc.printf("\r\n");
+
+ // process_command(a);
+
+ // ready for new command
+ recieved = 0;
+ a[0] = '\0';
+ i = 0;
+ };
+};
+
+
+void check_temp(){
+
+ myled = 0; // turn the LED on
+
+ 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)
+
+ switch(temp_error[j]) {
+ case 0: // no errors -> 'temp' contains the value of measured temperature
+ pc.printf("%s = %3.1fC \r\n", labels[j].c_str() , temp[j]);
+ break;
+ case 1: // no sensor present -> 'temp' is not updated
+ pc.printf("no %s sensor present \r\n", labels[j].c_str() );
+ break;
+ case 2: // CRC error -> 'temp' is not updated
+ pc.printf("%s sensor CRC error \r\n", labels[j].c_str() );
+ };
+ // start temperature conversion from analog to digital
+ ds1820[j].startConversion();
+ };
+
+ pc.printf("State %d|%d|%d|%d|%d\r\n", temp_error[0], temp_error[1], temp_error[2], temp_error[3], temp_error[4] );
+ pc.printf("Temp %3.1f|%3.1f|%3.1f|%3.1f|%3.1f\r\n", temp[0], temp[1], temp[2], temp[3], temp[4] );
+ pc.printf("=======================================");
+ myled = 1; // turn the LED off
+};
+
+
int main() {
@@ -56,103 +148,17 @@
//pb.rise(&pb_out_interrupt);
pb.setSampleFrequency();
- float temp[5] = {
- 85,85,85,85,85 // initial temperature
- };
-
- int error[5] = {
- 0,0,0,0,0 // initial state
- };
-
- string labels[5] = {
- "OUTDOOR",
- "LITOS",
- "MEBEL",
- "HOT WATER",
- "BACK WATER"
- };
-
- DS1820 ds1820[5] = {
- DS1820(PA_9), // substitute PA_9 with actual mbed pin name connected to the OUTDOOR
- DS1820(PA_8), // substitute PA_8 with actual mbed pin name connected to the INDOOR LITOS
- DS1820(PA_7), // substitute PA_7 with actual mbed pin name connected to the INDOOR MEBEL
- DS1820(PA_6), // substitute PA_6 with actual mbed pin name connected to the HOT WATER
- DS1820(PA_5) // substitute PA_6 with actual mbed pin name connected to the HOT WATER
- };
-
pc.attach(&rxCallback, Serial::RxIrq);
pc.baud(115200);
pc.printf("Wifi Heating system\r\n");
- for ( int j=0; j < 5; j++ ) {
- if(ds1820[j].begin()) {
- pc.printf("%s sensor present!\r\n", labels[j].c_str());
- } else {
- //pc.printf("No %s sensor found!\r\n", labels[j].c_str());
- };
- };
+
- while(1) {
- // The on-board LED is connected, via a resistor, to +3.3V (not to GND).
- // So to turn the LED on or off we have to set it to 0 or 1 respectively
- myled = 0; // turn the LED on
- wait_ms(50); // 200 millisecond
- myled = 1; // turn the LED off
- wait_ms(50); // 1000 millisecond
- myled = 0; // turn the LED on
- wait_ms(50); // 200 millisecond
- myled = 1; // turn the LED off
- wait_ms(50); // 1000 millisecond
- myled = 0; // turn the LED on
- wait_ms(50); // 200 millisecond
- myled = 1; // turn the LED off
-
-
- // start temperature conversion from analog to digital
- for ( int j=0; j < 5; j++ ) {
- ds1820[j].startConversion();
- };
-
-
- wait(1.0); // let DS1820 complete the temperature conversion
-
- if (recieved == 1) {
-
- // command was recieved
- pc.printf(a);
- pc.printf("\r\n");
-
- // process_command(a);
-
- // ready for new command
- recieved = 0;
- a[0] = '\0';
- i = 0;
- };
-
-
-
- for ( int j=0; j < 5; j++ ) {
-
- error[j] = ds1820[j].read(temp[j]); // read temperature from DS1820 and perform cyclic redundancy check (CRC)
-
- switch(error[j]) {
- case 0: // no errors -> 'temp' contains the value of measured temperature
- pc.printf("%s = %3.1fC \r\n", labels[j].c_str() , temp[j]);
- break;
- case 1: // no sensor present -> 'temp' is not updated
- //pc.printf("no %s sensor present \r\n", labels[j].c_str() );
- break;
- case 2: // CRC error -> 'temp' is not updated
- pc.printf("%s sensor CRC error \r\n", labels[j].c_str() );
- };
-
- };
-
- pc.printf("State %d|%d|%d|%d|%d\r\n", error[0], error[1], error[2], error[3], error[4] );
- pc.printf("Temp %3.1f|%3.1f|%3.1f|%3.1f|%3.1f\r\n", temp[0], temp[1], temp[2], temp[3], temp[4] );
- pc.printf("=======================================");
-
- };
+ queue.call( start_temp );
+ queue.call_every(100, at_command);
+ queue.call_every(1000, check_temp);
+
+ // Start queue
+ queue.dispatch();
};
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