Muaiyd Al-Zandi
Embedded software Assessment 2
Dependencies: MCP23017 SDFileSystem USBDevice WattBob_TextLCD mbed
Diff: Function.h
- Revision:
- 16:0a2138a18f26
- Parent:
- 15:d33c51364fac
- Child:
- 17:dba09fb3f508
diff -r d33c51364fac -r 0a2138a18f26 Function.h
--- a/Function.h Wed Feb 26 11:55:20 2014 +0000
+++ b/Function.h Wed Feb 26 22:09:17 2014 +0000
@@ -3,16 +3,25 @@
#include "mbed.h"
#include "SDFileSystem.h"
-#define uint8_t MCPAddr 0X40
-
-MCP23017 Port(p9,p10,MCPAddr) ; // 16-bit parallel I/O object
+MCP23017 Port(p9,p10,0x40) ; // 16-bit parallel I/O object
WattBob_TextLCD LCD(&Port); // Varaible to 2*16 chacater LCD object
BusOut BinLed(LED4, LED3, LED2, LED1);
+
DigitalIn FrequencyIn(p15);
DigitalIn Switch1(p17);
DigitalIn Switch2(p18);
+
+DigitalOut ReadDigitalinPin(p21);
+DigitalOut ReadAnaloginPin(p22);
+DigitalOut FreqMsurPin(p23);
+DigitalOut BinaryCounterPin(p24);
+DigitalOut InputCheckPin(p25);
+DigitalOut DisplayPin(p26);
+DigitalOut LogFilePin(p27);
+DigitalOut TickerPin(p30);
+
AnalogIn Analogue_in_1(p19);
AnalogIn Analogue_in_2(p20);
@@ -23,7 +32,7 @@
uint8_t Bin=0x00;
bool Swch1;
bool Swch2;
-bool Ena_job6=0;
+bool Ena_BinCounter=0;
bool FreqTimeOutHpn;
uint8_t Error_Code;
uint16_t Freq;
@@ -34,14 +43,7 @@
Timer FreqTimeOut;
Timer LogTimer;
-Ticker CallFreqMsur;
-Ticker CallReadDigitalin;
-Ticker CallReadAnalogin;
-Ticker CallDisplay;
-Ticker CallInputCheck;
-Ticker CallBinaryCounter;
-Ticker CallLogFile;
-
+Ticker Cycle;
void Init_LCD();
void FreqMsur();
@@ -55,17 +57,21 @@
/********************************************************************************
Functions
-###############################################################################*/
+###############################################################################
+ Small function to writ on the LCD with one instruction
+********************************************************************************/
void Write_LCD(const char STR[],int8_t PY,int8_t PX,bool clr){
if(clr)
LCD.cls();
LCD.locate(PY,PX);
LCD.printf(STR);
}
-/***************************************************************************/
+/**************************************************************************
+ Intialise the LCD to be ready to writ on
+***************************************************************************/
void Init_LCD(){
Port.write_bit(1,BL_BIT);
- Write_LCD("Muaiyd",0,4,1);
+ Write_LCD("Muaiyd Al-Zandi",0,4,1);
Write_LCD("Heriot-Watt Uni.",1,0,0);
wait(1.5);
Write_LCD("F=",0,0,1);
@@ -74,30 +80,59 @@
Write_LCD("S1=",0,7,0);
Write_LCD("S2=",0,12,0);
Write_LCD("E",1,14,0);
- LogTimer.start();
+}
+/**********************************************************************
+ Read TWO digital inputs every 400mS (switch_1 and switch_2)
+***********************************************************************/
+void ReadDigitalin(){
+ ReadDigitalinPin = !(ReadDigitalinPin);
+ Swch1=Switch1;
+ Swch2=Switch2;
}
-
+/*******************************************************************
+ Read TWO analogue inputs every 800mS (Analogue_in_1 at pin 19
+ and Analogue_in_2 at pin 20). Also, averaging the last 4 readings
+********************************************************************/
+void ReadAnalogin(){
+ ReadAnaloginPin = ! (ReadAnaloginPin);
+ Analug1_valu[4]=0;
+ Analug2_valu[4]=0;
+ for(int i=0;i<3;i++){
+ Analug1_valu[i]=Analug1_valu[i+1];
+ Analug1_valu[4]=Analug1_valu[4]+Analug1_valu[i]/4;
+ Analug2_valu[i]=Analug2_valu[i+1];
+ Analug2_valu[4]=Analug2_valu[4]+Analug2_valu[i]/4;
+ }
+ Analug1_valu[3]=Analogue_in_1.read()*255;
+ Analug2_valu[3]=Analogue_in_2.read()*255;
+ Analug1_valu[4]=Analug1_valu[4]+Analug1_valu[3]/4;
+ Analug2_valu[4]=Analug2_valu[4]+Analug2_valu[3]/4;
+}
/***************************************************************************************
Measure the frequency of a 3.3v square wave signal once every second. The frequency range
-is 500Hz to 1000Hz with 50% duty cycle).
+is 500Hz to 1000Hz with 50% duty cycle). In this code the on complet cycle is peiod is
+masured after detcting the edge also a timeout timer is seting to detect open loop.
*****************************************************************************************/
void FreqMsur(){
+ FreqMsurPin = ! (FreqMsurPin);
FreqTimeOut.start();
+ // Ignore first part of the signal to detect the edge
if(!FrequencyIn){
while(!FrequencyIn){
- if (FreqTimeOut.read_ms() > 3)
+ if (FreqTimeOut.read_ms() > 4)
break;
}
}
else{
while(FrequencyIn){
- if (FreqTimeOut.read_ms() > 3)
+ if (FreqTimeOut.read_ms() > 4)
break;
- }
}
+ }
+ //This is the begining of the edge start the timer to masure
FreqMsurT.start();
- if (FreqTimeOut.read_ms() > 3){
+ if (FreqTimeOut.read_ms() > 4){
FreqTimeOutHpn=1;
}
else{
@@ -129,29 +164,6 @@
FreqMsurT.reset();
}
-//Read TWO digital inputs every 400mS (switch_1 and switch_2)
-void ReadDigitalin(){
- Swch1=Switch1;
- Swch2=Switch2;
-}
-/*******************************************************************
-Read TWO analogue inputs every 800mS (Analogue_in_1 at pin 19
-and Analogue_in_2 at pin 20). Also, averaging the last 4 readings
-********************************************************************/
-void ReadAnalogin(){
- Analug1_valu[4]=0;
- Analug2_valu[4]=0;
- for(int i=0;i<3;i++){
- Analug1_valu[i]=Analug1_valu[i+1];
- Analug1_valu[4]=Analug1_valu[4]+Analug1_valu[i]/4;
- Analug2_valu[i]=Analug2_valu[i+1];
- Analug2_valu[4]=Analug2_valu[4]+Analug2_valu[i]/4;
- }
- Analug1_valu[3]=Analogue_in_1.read()*255;
- Analug2_valu[3]=Analogue_in_2.read()*255;
- Analug1_valu[4]=Analug1_valu[4]+Analug1_valu[3]/4;
- Analug2_valu[4]=Analug2_valu[4]+Analug2_valu[3]/4;
-}
/*************************************************************
Display the following on the LCD display every 2 seconds
a. Frequency value (show as integer)
@@ -160,6 +172,7 @@
d. Possible error code
**************************************************************/
void Display(){
+ DisplayPin = ! (DisplayPin);
Write_LCD(" ",0,2,0);
if( Freq<1010 && Freq>490){
sprintf(Temp, "%d", Freq);
@@ -181,8 +194,11 @@
sprintf(Temp, "%d", Error_Code);
Write_LCD(Temp,1,15,0);
}
-//############################################################
+/*************************************************************************
+ Cheaking the four input
+************************************************************************/
void InputCheck(){
+ InputCheckPin = ! (InputCheckPin);
if(Swch1&&(Analug1_valu[4]>Analug2_valu[4])){
Error_Code=3;
}
@@ -190,15 +206,18 @@
Error_Code=0;
}
if(Swch2){
- Ena_job6=1;
+ Ena_BinCounter=1;
}
else{
- Ena_job6=0;
+ Ena_BinCounter=0;
}
}
-
+/***************************************************************
+ Binery counter on the four Led
+*****************************************************************/
void BinaryCounter(){
- if(Ena_job6){
+ BinaryCounterPin = !(BinaryCounterPin);
+ if(Ena_BinCounter){
BinLed=Bin;
Bin++;
}
@@ -208,12 +227,13 @@
}
}
/***************************************************************
-
+ Initialising the SD card file
*****************************************************************/
void InitFile(){
fp = fopen( "/sd/LogDir/LogHistory.txt" , "a");
if(fp == NULL) {
- error("Could not open file for write\n");
+ Write_LCD("SD Card Error",0,0,1);
+ Write_LCD("Try Reset",1,0,0);
}
fprintf(fp,"%s","**************************************************************\r\n");
fprintf(fp,"%s","Time Freq Sw1 Sw2 An1 An2 ;\r\n");
@@ -221,25 +241,25 @@
fclose(fp);
}
/**************************************************************
-
+ Saving the flowing data in a file
+ a. Frequency value
+ b. digital input values
+ c. Filtered analogue values
***************************************************************/
-void LogFile(){
- char* Frq;
- fp = fopen("/sd/LogDir/LogHistory.txt", "a");
- if( Freq<1200 && Freq>400){
- sprintf(Temp, "%d", Freq);
- Frq = Temp;
+void LogFile(){
+ LogFilePin = ! (LogFilePin);
+ fp = fopen( "/sd/LogDir/LogHistory.txt" , "a");
+ fprintf(fp,"%i ",(LogTimer.read_ms()/1000));
+ if (Freq !=0xffff){
+ fprintf(fp," %i ,",Freq);
}
- else
- Frq="Err";
-
- fprintf(fp,"%d ,",(LogTimer.read_ms()/1000));
- fprintf(fp," %s ,",Frq);
+ else{
+ fprintf(fp,"Err ");
+ }
fprintf(fp," %i ,",Swch1);
fprintf(fp," %i ,",Swch2);
fprintf(fp," %d%3 ,",Analug1_valu[4]);
fprintf(fp," %d%3 ",Analug2_valu[4]);
fprintf(fp," %s","\r\n");
- fclose(fp);
- printf("Goodbye World!\n");
+ fclose(fp);
}
\ No newline at end of file