Function.h

00001 #include "MCP23017.h"
00002 #include "WattBob_TextLCD.h"
00003 #include "mbed.h"
00004 #include "SDFileSystem.h"
00005 
00006 MCP23017 Port(p9,p10,0x40) ;      // 16-bit object with I2C Chip MCP23017 
00007 WattBob_TextLCD LCD(&Port);       // A 2*16 chacater LCD object
00008 
00009 
00010 BusOut BinLed(LED4, LED3, LED2, LED1);
00011 
00012 DigitalIn FrequencyIn(p15);
00013 DigitalIn Switch1(p17);
00014 DigitalIn Switch2(p18);
00015 /*
00016   These pins are used to show the time between every execution.
00017 Because of the execution time is very small I used the pins to flip 
00018 high and low with every time the functions are called. Consequently,
00019 the period of high or of low represent the complete time.
00020 
00021 */
00022 DigitalOut TickerPin(p30);
00023 
00024 DigitalOut ReadDigitalinPin(p21);
00025 DigitalOut ReadAnaloginPin(p22);
00026 DigitalOut FreqMsurPin(p23);
00027 DigitalOut BinaryCounterPin(p24);
00028 DigitalOut InputCheckPin(p25);
00029 DigitalOut DisplayPin(p26);
00030 DigitalOut LogFilePin(p27);
00031 
00032 
00033 AnalogIn Analogue_in_1(p19);
00034 AnalogIn Analogue_in_2(p20);
00035  
00036 SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
00037 
00038 uint8_t Analug1_valu[5]={0,0,0,0,0};
00039 uint8_t Analug2_valu[5]={0,0,0,0,0};
00040 uint8_t Bin=0x00;
00041 bool Swch1;
00042 bool Swch2;
00043 bool Ena_BinCounter=0;
00044 bool FreqTimeOutHpn;
00045 uint8_t Error_Code;
00046 uint16_t Freq;
00047 char Temp[4];
00048 FILE *fp;
00049 
00050 Timer FreqMsurT;
00051 Timer FreqTimeOut;
00052 Timer LogTimer;
00053 
00054 Ticker Cycle;
00055 
00056 void Init_LCD();
00057 void FreqMsur();
00058 void ReadDigitalin();
00059 void ReadAnalogin();
00060 void Display();
00061 void InputCheck();
00062 void BinaryCounter();
00063 void InitFile();
00064 void LogFile();
00065 
00066 /******************************************************************************
00067         Small function to writ on the LCD with one instruction
00068 ********************************************************************************/
00069 void Write_LCD(const char STR[],int8_t PY,int8_t PX,bool clr){
00070     if(clr)
00071         LCD.cls();
00072     LCD.locate(PY,PX);
00073     LCD.printf(STR);
00074 }
00075 /**************************************************************************
00076                 Intialise the LCD to be ready to writ on
00077 ***************************************************************************/
00078 void Init_LCD(){
00079     Port.write_bit(1,BL_BIT);
00080     Write_LCD("F=",0,0,1);
00081     Write_LCD("A1=",1,0,0);
00082     Write_LCD("A2=",1,7,0);
00083     Write_LCD("S1=",0,7,0);
00084     Write_LCD("S2=",0,12,0);
00085     Write_LCD("E",1,14,0);
00086 }
00087 
00088 /*************************************************************************
00089                 Cheaking the four input every 1.8 Sec
00090 ************************************************************************/
00091 void InputCheck(){
00092     InputCheckPin = ! (InputCheckPin);    //Pin 25
00093     if(Swch1&&(Analug1_valu[4]>Analug2_valu[4])){
00094         Error_Code=3;
00095     }
00096     else{
00097         Error_Code=0;
00098     }
00099     if(Swch2){
00100         Ena_BinCounter=1;
00101     }
00102     else{
00103         Ena_BinCounter=0;
00104     }        
00105 }
00106 
00107 /***************************************************************
00108               Initialising the SD card file
00109 *****************************************************************/
00110 void InitFile(){
00111     fp = fopen( "/sd/LogDir/LogHistory.csv" , "a");
00112     if(fp == NULL) {
00113         Write_LCD("SD Card Error",0,0,1);
00114         Write_LCD("Try Reset",1,0,0);
00115     } 
00116     fprintf(fp,"Time;Freq;Sw1;Sw2;An1;An2\r\n");
00117     fclose(fp);  
00118 }
00119 /**************************************************************
00120         Saving the flowing data in a file
00121         a. Frequency value 
00122         b. digital input values 
00123         c. Filtered analogue values
00124 ***************************************************************/
00125 void LogFile(){ 
00126     LogFilePin = ! (LogFilePin);         //Pin 27
00127     fp = fopen( "/sd/LogDir/LogHistory.csv" , "a"); 
00128     fprintf(fp,"%i;",(LogTimer.read_ms()/1000));
00129     if (Freq !=0xffff){
00130         fprintf(fp,"%4i;",Freq);
00131     }
00132     else{
00133         fprintf(fp,"%4s;","Err");
00134     }
00135     fprintf(fp,"%i;",Swch1);
00136     fprintf(fp,"%i;",Swch2);
00137     fprintf(fp,"%3d;",Analug1_valu[4]);
00138     fprintf(fp,"%3d;",Analug2_valu[4]);
00139     fprintf(fp,"%s","\r\n");
00140     fclose(fp);
00141     //LogFilePin = ! (LogFilePin);     
00142 }