Gert Lauritsen
Brew controller for controlling the temperature in the pot and the speed of the pump. It upload all data to a PC with UDP
Dependencies: DS18B20_1wire EthernetInterface PID mbed-rtos mbed
Revision 0:ad2d0aa4726b, committed 2016-02-02
- Comitter:
- gert_lauritsen
- Date:
- Tue Feb 02 14:42:29 2016 +0000
- Commit message:
- Brew control system for a BIB brew
Changed in this revision
diff -r 000000000000 -r ad2d0aa4726b DS18B20_1wire.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DS18B20_1wire.lib Tue Feb 02 14:42:29 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/richardlane/code/DS18B20_1wire/#00972ed59ba3
diff -r 000000000000 -r ad2d0aa4726b EthernetInterface.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface.lib Tue Feb 02 14:42:29 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/EthernetInterface/#2fc406e2553f
diff -r 000000000000 -r ad2d0aa4726b PID.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PID.lib Tue Feb 02 14:42:29 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/aberk/code/PID/#6e12a3e5af19
diff -r 000000000000 -r ad2d0aa4726b main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Feb 02 14:42:29 2016 +0000
@@ -0,0 +1,154 @@
+#include "mbed.h"
+#include <stdint.h>
+#include "DS18B20.h"
+#include "PID.h"
+#include "EthernetInterface.h"
+
+#define RATE 1
+#define SensorOffset 1.2 //Its about this that they show to must.
+
+char* SERVER_ADDRESS = "172.31.2.3";
+const int SERVER_PORT = 2222;
+
+typedef struct {
+ char MeassageID;
+ float Kp,tauI,tauD;
+} __attribute__ ((packed)) TPID;
+
+typedef struct {
+ char CtrlType;
+ float tempeture; //nuværende temperatur
+ float setpoint; //Hvad temperatur vi skal nå.
+ float pump; //Stilling af pumpen
+ char mode; //0: Auto; 1: manuel
+ float PWM; //Manuel power
+} __attribute__ ((packed)) Tsetting;
+
+DigitalOut led(LED_GREEN); //Varmelegme
+DigitalOut Heat(A3); //Varmelegme
+PwmOut Pump(A4);
+
+
+Serial pc(USBTX, USBRX); // serial comms over usb back to console
+DS18B20 thermom(A5, DS18B20::RES_12_BIT); // Dallas 1-wire
+float SetTemp;
+
+PID controller(10.0, 0.02, 5.0, RATE);
+Timeout TurnOffHeat;
+Tsetting status;
+EthernetInterface eth;
+UDPSocket server,sock;; //Denne server. Modtager data fra PC sock er til at sende data
+Endpoint process_server, DataIn;
+TPID PidFactors;
+
+void initSpeedCtrl(void)
+{
+ controller.setInputLimits(0,100); //0..100 RPM
+ //Pwm output from 0.0 to 1.0
+ controller.setOutputLimits(0.0, 1.0);
+// controller.setBias(1.0);
+ controller.setMode(AUTO_MODE);
+ controller.setSetPoint(status.setpoint); //tomgang
+}
+
+void HeatOff() {
+ Heat=0; led=1;
+}
+
+void ReadTemp() {
+float RegError;
+ status.tempeture=thermom.GetTemperature()-SensorOffset;
+ while ((status.tempeture<-20) || (status.tempeture>110)) status.tempeture=thermom.GetTemperature(); //læs igen
+ if (status.mode==1) {
+ controller.setProcessValue(status.tempeture);
+ RegError =controller.compute();
+ if (RegError>0.01) {
+ Heat=1; led=0;
+ TurnOffHeat.attach(&HeatOff,RegError/RATE);
+ }
+ }
+ if (status.mode==0) {
+ if (status.PWM>0.01) {
+ Heat=1; led=0;
+ TurnOffHeat.attach(&HeatOff,status.PWM/RATE);
+ }
+ }
+}
+
+
+void sendStatus() {
+
+}
+
+void ReadSocketDate(void const *args) {
+ char buffer[256];
+ printf("ReadThread Init Done\r\n");
+ while (1) {
+ int n = server.receiveFrom(DataIn, buffer, sizeof(buffer));
+ if (buffer[0]==0) { //seach function
+ if (strcmp(DataIn.get_address(),process_server.get_address())!=0) {
+ process_server.set_address(DataIn.get_address(),SERVER_PORT);
+ printf(" New Adress: %s\r\n",DataIn.get_address());
+ }
+ }
+ if (buffer[0]==1) {
+ memcpy(&status,&buffer[0],sizeof(status));
+ printf("NEW Settings [%s]:\r\n",DataIn.get_address());
+ printf(" setpoint: %.1f \r\n",status.setpoint);
+ if (!status.mode) printf("Manual mode %.1f\n\r",status.PWM); else printf("Auto mode\n\r");
+ printf(" Pump: %.1f \r\n",status.pump);
+ Pump=status.pump/100;
+ }
+ if (buffer[0]==2) {
+ memcpy(&PidFactors,&buffer[0],sizeof(PidFactors));
+ printf("NEW PID %.2f %.2f %.2f\r\n", PidFactors.Kp,PidFactors.tauI,PidFactors.tauD);
+ controller.setTunings(PidFactors.Kp,PidFactors.tauI,PidFactors.tauD);
+ }
+ }
+}
+
+int main() {
+ char out_buffer[sizeof(status)];
+ led=1;
+ Pump.period_ms(1);
+ Pump.write(0);
+ pc.printf("\n\r---------------------------------------------------------------\n\r");
+ pc.printf("BrewController INIT\n\r");
+ status.CtrlType=1;
+ status.setpoint=0;
+ eth.init(); //Use DHCP
+ eth.connect();
+ pc.printf("IP Address is %s\n\r", eth.getIPAddress());
+
+ sock.init();
+ server.bind(SERVER_PORT);
+
+ process_server.set_address(SERVER_ADDRESS, SERVER_PORT);
+
+ pc.printf("Temp Sensor: \n\r");
+ DS18B20::ROM_Code_t ROM_Code;
+ thermom.ReadROM(&ROM_Code);
+ pc.printf("Family code: 0x%X\n\r", ROM_Code.BYTES.familyCode);
+ pc.printf("Serial Number: ");
+ for (unsigned i = 6; i != 0; --i) {
+ pc.printf("%02X%s", ROM_Code.BYTES.serialNo[i-1], (i != 1)?":":"\r\n");
+ }
+ pc.printf("CRC: 0x%X\r\n", ROM_Code.BYTES.CRC);
+ Thread DbThread(ReadSocketDate, NULL, osPriorityNormal, (DEFAULT_STACK_SIZE * 2.25));
+
+ initSpeedCtrl();
+
+ pc.printf("---------------------------------------------------------------\n\r");
+
+ pc.printf("\n\rRunning ...\n\r");
+
+
+ while (1) {
+ ReadTemp();
+ //send data til PC
+ memcpy(&out_buffer[0],&status.CtrlType,sizeof(status));
+ sock.sendTo(process_server, out_buffer, sizeof(status));
+ // printf("Data to: %s Temp= %.1f Out[0] %x \r\n",process_server.get_address(),status.tempeture, out_buffer[0]);
+ wait(RATE);
+ }
+}
\ No newline at end of file
diff -r 000000000000 -r ad2d0aa4726b mbed-rtos.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Tue Feb 02 14:42:29 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#3d9d2b8b8f17
diff -r 000000000000 -r ad2d0aa4726b mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Feb 02 14:42:29 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/6f327212ef96 \ No newline at end of file