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Diffstat (limited to 'csource/IR_PID/IR_PID.cpp')
-rw-r--r--csource/IR_PID/IR_PID.cpp170
1 files changed, 103 insertions, 67 deletions
diff --git a/csource/IR_PID/IR_PID.cpp b/csource/IR_PID/IR_PID.cpp
index 1ec54c7..affe96a 100644
--- a/csource/IR_PID/IR_PID.cpp
+++ b/csource/IR_PID/IR_PID.cpp
@@ -56,6 +56,19 @@
#include <avr/pgmspace.h>
#include <stdio.h>
#include "WProgram.h"
+#include <LiquidCrystal.h>
+
+
+static FILE uartout = {0} ;
+
+static int uart_putchar (char c, FILE *stream)
+{
+ Serial.write(c) ;
+ return 0 ;
+}
+
+
+LiquidCrystal lcd(14,15,16,17,18,19);
void setup();
void setTargetTemp(float t);
@@ -95,6 +108,7 @@ float thermo_temp;
unsigned long lastPIDTime; // most recent PID update time in ms
volatile unsigned long lastRead;
volatile unsigned long epoch;
+volatile unsigned long targetSetAt;
//-------------------------------------------------------------EEPROM float stuff
@@ -162,7 +176,7 @@ void setupPID(unsigned int padd, int iadd, int dadd) {
setD(0.0); // make sure to keep the decimal point on these values
setTargetTemp(0.0); // target temp should be something safe.
}
-
+
}
float getP() {
@@ -246,11 +260,9 @@ float updatePID(float targetTemp, float curTemp)
void printPIDDebugString() {
// A helper function to keep track of the PID algorithm
- char buffer[80];
- snprintf(buffer,80,"PID formula (P + I - D): %d.%02d + %d.%02d - %d.%02d POWER: %d ",
+ printf("PID formula (P + I - D): %d.%02d + %d.%02d - %d.%02d POWER: %d ",
int(pTerm),to2d(pTerm),int(iTerm),to2d(iTerm),int(dTerm),to2d(pTerm),
int(getHeatCycles()));
- Serial.write(buffer);
}
//-----------------------------------------------------------------HeaterControl
@@ -348,25 +360,25 @@ boolean printmode = 0;
unsigned long lastUpdateTime = 0;
void setupSerialInterface() {
- Serial.begin(myBaud);
- Serial.write("\r\nWelcome to the HPSS, the Hot Plate Solder System for Arduino\r\n");
- Serial.write("Send back one or more characters to setup the controller.\r\n");
- Serial.write("Enter '?' for help. Surface Mount or DIE!\r\n");
+// Serial.begin(myBaud);
+ printf_P(PSTR("\r\nWelcome to the HPSS, the Hot Plate Solder System for Arduino\r\n"));
+ printf_P(PSTR("Send back one or more characters to setup the controller.\r\n"));
+ printf_P(PSTR("Enter '?' for help. Surface Mount or DIE!\r\n"));
}
void printHelp() {
- Serial.println("Send these characters for control:");
- Serial.println("<space> : print status now");
- Serial.println("u : toggle periodic status update");
- Serial.println("g : toggle update style between human and graphing mode");
- Serial.println("R : reset/initialize PID gain values");
- Serial.println("b : print PID debug values");
- Serial.println("? : print help");
- Serial.println("+/- : adjust delta by a factor of ten");
- Serial.println("P/p : up/down adjust p gain by delta");
- Serial.println("I/i : up/down adjust i gain by delta");
- Serial.println("D/d : up/down adjust d gain by delta");
- Serial.println("T/t : up/down adjust set temp by delta");
+ printf_P(PSTR("Send these characters for control:\r\n"));
+ printf_P(PSTR("<space> : print status now\r\n"));
+ printf_P(PSTR("u : toggle periodic status update\r\n"));
+ printf_P(PSTR("g : toggle update style between human and graphing mode\r\n"));
+ printf_P(PSTR("R : reset/initialize PID gain values\r\n"));
+ printf_P(PSTR("b : print PID debug values\r\n"));
+ printf_P(PSTR("? : print help\r\n"));
+ printf_P(PSTR("+/- : adjust delta by a factor of ten\r\n"));
+ printf_P(PSTR("P/p : up/down adjust p gain by delta\r\n"));
+ printf_P(PSTR("I/i : up/down adjust i gain by delta\r\n"));
+ printf_P(PSTR("D/d : up/down adjust d gain by delta\r\n"));
+ printf_P(PSTR("T/t : up/down adjust set temp by delta\r\n"));
}
@@ -436,7 +448,7 @@ void updateSerialInterface() {
}
if (incomingByte == 'b') {
printPIDDebugString();
- Serial.println();
+ printf("\r\n");
}
}
@@ -468,14 +480,11 @@ void printStatus() {
p=getP();
i=getI();
d=getD();
- hc=getHeatCycles();
- char printbuffer[100];
- snprintf(printbuffer,100, "SET TEMP: %d.%02d, CUR TEMP: %d.%02d, GAINS p: %d.%02d" \
- " i: %d.%02d d: %d.%02d, Delta: %d.%02d, Power: %d \r\n",
+ printf("SET TEMP: %d.%02d, CUR TEMP: %d.%02d, GAINS p: %d.%02d" \
+ " i: %d.%02d d: %d.%02d, Delta: %d.%02d, Power: %d \r\n",
int(tt),to2d(tt),int(lt),to2d(lt),int(p),to2d(p),int(i),to2d(i),int(d),to2d(d),
- int(delta),to2d(delta),int(hc));
- Serial.write((const char *)printbuffer);
- }
+ int(delta),to2d(delta),int(getHeatCycles()));
+}
void printStatusForGraph() {
float tt,lt,p,i,d,hc;
@@ -485,16 +494,14 @@ void printStatusForGraph() {
i=getI();
d=getD();
hc=getHeatCycles();
- char printbuffer[100];
- snprintf(printbuffer,100, "%d.%02d, %d.%02d, %d.%02d, %d.%02d, %d.%02d, %d.%02d,%d \r\n",
- int(tt),to2d(tt),int(lt),to2d(lt),int(p),to2d(p),int(i),to2d(i),int(d),to2d(d),
- int(delta),to2d(delta),int(hc));
- Serial.write((const char *)printbuffer);
+ printf("%d.%02d, %d.%02d, %d.%02d, %d.%02d, %d.%02d, %d\n",
+ int(tt),to2d(tt),int(lt),to2d(lt),int(p),to2d(p),int(i),to2d(i),int(d),to2d(d),int(hc));
}
-// temp - routines to read temperature strings from an IR
+//------------------------------------------------------------Temp Routines
+//temp - routines to read temperature strings from an IR
// Temperature Sensor.
// Created by Scott Dixon January, 2010.
// Based on documentation from
@@ -603,60 +610,89 @@ float getLastTemp() {
}
+void updateDisplay(){
+ char chunk[20];
+ lcd.setCursor(5,1);
+ snprintf(chunk,19,"%2ld:%.02ld",(epoch-targetSetAt)/60L,(epoch-targetSetAt)%60L);
+ lcd.print(chunk);
+ lcd.setCursor(11,1);
+ snprintf(chunk,19,"G:% 4d.%2.02d",int(getTargetTemp()),to2d(getTargetTemp()));
+ lcd.print(chunk);
+ lcd.setCursor(11,2);
+ snprintf(chunk,19,"T:% 4d.%2.02d",int(getLastTemp()),to2d(getLastTemp()));
+ lcd.print(chunk);
+ lcd.setCursor(11,0);
+ snprintf(chunk,19,"%6ld:%.02ld",epoch/60L,epoch%60L);
+ lcd.print(chunk);
+ lcd.setCursor(13,3);
+ snprintf(chunk,18,"S:% 4d",int(getHeatCycles()));
+ lcd.print(chunk);
+}
+
//-----------------------------------------------------main (Setup and loop)
void setup()
{
-
- setupPID(PGAIN_ADR, IGAIN_ADR, DGAIN_ADR ); // Send addresses to the PID module
- targetTemp = readFloat(TEMP_SETTING_ADR); // from EEPROM. load the saved value
- lastPIDTime = millis();
- // module setup calls
- setupHeater();
- setupSerialInterface();
- setupTempSensor();
+ lcd.begin(16, 4);
+ lcd.setCursor(0,0);
+ lcd.print("hotplate!");
+
+ Serial.begin(9600);
+ fdev_setup_stream (&uartout, uart_putchar, NULL, _FDEV_SETUP_WRITE);
+ stdout = &uartout ;
+
+
+ setupPID(PGAIN_ADR, IGAIN_ADR, DGAIN_ADR ); // Send addresses to the PID module
+
+ targetTemp = readFloat(TEMP_SETTING_ADR); // from EEPROM. load the saved value
+ lastPIDTime = millis();
+ // module setup calls
+ setupHeater();
+ setupSerialInterface();
+ setupTempSensor();
epoch=millis()/1000L;
}
void setTargetTemp(float t) {
- targetTemp = t;
- writeFloat(t, TEMP_SETTING_ADR);
+ targetTemp = t;
+ writeFloat(t, TEMP_SETTING_ADR);
+ targetSetAt=epoch;
}
float getTargetTemp() {
- return targetTemp;
+ return targetTemp;
}
void loop()
{
- epoch=millis()/1000L;
- // this call interprets characters from the serial port
- // its a very basic control to allow adjustment of gain values, and set temp
- updateSerialInterface();
- updateTempSensor();
-
- // every second, udpate the current heat control, and print out current status
-
- // This checks for rollover with millis()
- if (millis() < lastPIDTime) {
- lastPIDTime = 0;
- }
-
- if ((millis() - lastPIDTime) > PID_UPDATE_INTERVAL) {
- lastPIDTime += PID_UPDATE_INTERVAL;
- heatPower = updatePID(targetTemp, getFreshTemp());
- setHeatPowerPercentage(heatPower);
- }
+ epoch=millis()/1000L;
+ // this call interprets characters from the serial port
+ // its a very basic control to allow adjustment of gain values, and set temp
+ updateSerialInterface();
+ updateDisplay();
+ updateTempSensor();
+
+ // every second, udpate the current heat control, and print out current status
+
+ // This checks for rollover with millis()
+ if (millis() < lastPIDTime) {
+ lastPIDTime = 0;
+ }
+
+ if ((millis() - lastPIDTime) > PID_UPDATE_INTERVAL) {
+ lastPIDTime += PID_UPDATE_INTERVAL;
+ heatPower = updatePID(targetTemp, getFreshTemp());
+ setHeatPowerPercentage(heatPower);
+ }
if (consectutive_timeouts>20){
setHeatPowerPercentage(0);
- //bark real loud!!!!
- //Serial.println("DBG: missing overriding temp");
+ consectutive_timeouts=0;
}
- updateHeater();
-
+ updateHeater();
+
}
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