SG8_Demo_main.zip_DEMO

/* I am using SG8 device 16-PIN(TSSOP),CW 6.2v. In my application i want use capture,compare module. So pin no 16 (PTA0/TPM1CH0) is used for capture i/p , the square wave (50 Hz,5v amplitude) is given to this pin & TPM1CH1 is used only for output compare. Once the capture is happened i am reseting TPM1 & putting some value in channel 1 valure register (TPM1C1V) & making PTBD_PTBD1 = 1.So once the TPM1 matched with channel 1 value register (TPM1C1V) interrupt will generate & in ISR i am making PTBD_PTBD1 = 0; This is happening if i enabled TPM1 (TPM1SC_CLKSA = 1) in "main()" function. But if i disabled it no capture or compare is happened. & in my applicationi want to start TPM1 timer after capture happened. Please tell me the solution to overcome this.Below is my source code. */ #include <hidef.h> /* for EnableInterrupts macro */ #include "derivative.h" /* include peripheral declarations */ #define PULSEHIGHTIME FALSE //time for pulse high, or from input pulse low to #define CH1INTERRUPT FALSE //defines if TPM1CH1 interrupt is needed //output pulse low. #define LED1 PTBD_PTBD6 #define LED1MOD PTBDD_PTBDD6 #define LED2 PTBD_PTBD7 #define LED2MOD PTBDD_PTBDD7 #define ON 0 #define OFF 1 #define US100 0x18 void MCU_init(void); unsigned char flag; interrupt 26 void MTIM_ISR(void) { MTIMSC_TOF = 0; } /*interrupt 11 void Timovr(void){ TPM1SC_TOF=0; } */ #if CH1INTERRUPT //........................................................... /********************************************************************** * * TPM1CH1 interrupt * ***********************************************************************/ void interrupt VectorNumber_Vtpm1ch1 TPM1Ch1int(void){ TPM1C1SC_CH1F=0; PTBD_PTBD1 = 0; // Make pin output low once Compare happened. } //........................................................... #endif /********************************************************************** * * TPM1CH0 interrupt * ***********************************************************************/ void interrupt VectorNumber_Vtpm1ch0 TPM1Ch0int(void){ // ISR for TPM1 channel 0 unsigned char x; LED2 = ON; TPM1C0SC_CH0F=0; //clear interrupt flag //start the output pulse on TPM1CH1 TPM1SC_CLKSA = 0; // Stop TPM1 Counter incrementing TPM1C1SC = TPM1C1SC_MS1A_MASK| //pull TPM1CH1 high TPM1C1SC_ELS1B_MASK| TPM1C1SC_ELS1A_MASK; TPM1C1V = TPM1CNT+1; //get current time, add 1 TPM1SC_CLKSA = 1; // Start TPM1 Counter incrementing //wait at least 1 clock cycle (250 kHz) for (x = 0;x < 25;x++); //short delay PTBD_PTBD1 = 1; // Make pin output high once Capture happened. PTBD_PTBD2 = ~PTBD_PTBD2; // Check capture is happened. //now its time to store the TPM1CH1 stop address TPM1SC_CLKSA = 0; // Stop TPM1 Counter again #if PULSEHIGHTIME //........................................................... TPM1C1V = TPM1C0V+US100; // Change value in compare register. //........................................................... #else //........................................................... TPM1C1V = TPM1CNT+US100; // Change value in compare register. //........................................................... #endif TPM1C1SC = #if CH1INTERRUPT //........................................................... TPM1C1SC_CH1IE_MASK| //enable the TPM1CH1 interrupts (***) //........................................................... #endif TPM1C1SC_MS1A_MASK| //pull TPM1CH1 low at the trig time TPM1C1SC_ELS1B_MASK; TPM1SC_CLKSA = 1; // Start TPM1 Counter incrementing flag = 1; LED2 = OFF; } /********************************************************************** * * main() * ***********************************************************************/ void main(void) { MCU_init(); LED1MOD = 1; LED2MOD = 1; LED1 = OFF; LED2 = OFF; flag = 0; EnableInterrupts; /* enable interrupts */ /* include your code here */ for(;;) { LED1 = ON; LED1 = OFF; } /* loop forever */ /* please make sure that you never leave main */ } void MCU_init(void) { /******************** LVI**************************/ SPMSC1 = 0b00110100; //0x34=> Enable LVI SPMSC2 = 0x00;//0b00100000;//0x20 =>LVDV = 1;LVWV = 0; LVD Trip Point = 4.0v SOPT1 = 0x04; // COP Disabled,STOP mode Disabled,SDA on PTB6, SCL on PTB7. SOPT2 = 0x00; //TPM1CH1 on PTB5.TPM1CH0 on PTA0. /******************** PORT A ********************/ /*PTAD = 0x00; // Port A Data register (PTAD_PTAD _PTAD.MergedBits.grpPTAD) PTADD = 0x02; // 0b00000010 =>Port A Data Direction register ,I/P= PTA1/PTA2/PTA3,O/P = PTA0 PTAPE = 0x00; // Internal pull-up register disabled */ /******************** PORT B ********************/ /*PTBD = 0x54; // Port B Data register PTBDD = 0xD6; //0b11010110 => Port B Data Direction register, I/P= PTA1/PTA2/PTA3,O/P = PTA0 PTBPE = 0x00; // Port B Data Direction register ,I/P= PTB0/PTB3/PTB5,O/P = PTB1/PTB2/PTB4/PTB6/PTB7 PTBD_PTBD6 = 1; //Discharge the Ign coil. */ /*************** Internal Clock Source Select *************************/ ICSSC = *(unsigned char*)0xFFAE; ICSTRM = *(unsigned char*)0xFFAF; ICSC1 = 0x04; //Output of FLL is selected. ICSC2 = 0x00; while(!ICSSC_IREFST) { /* Wait until the source of reference clock is internal clock */ } /*************** Timer/PWM Module **********************************************************/ //TPM1SC = 0x46; //TPM counter disable,TPM/64 = 16MHz/64 = 250 KHz,So 1 Count = 4 usec. TPM1SC = TPM1SC_PS2_MASK|TPM1SC_PS1_MASK; TPM1C0SC = TPM1C0SC_CH0IE_MASK|TPM1C0SC_ELS0B_MASK; //no interupts for channel 0 so far TPM1C1SC = 0; TPM1SC_CLKSA =1; // Start TPM1 Counter incrementing }