void Sysdelay(unsigned int milliSec) { #ifdef DELAY_USE_INTERRUPTS unsigned int countVal = TIMER_OVERFLOW - (milliSec * TIMER_1MS_COUNT); DMTimerCounterSet(SOC_DMTIMER_7_REGS, countVal); flagIsr = FALSE; /* Enable the DMTimer interrupts */ DMTimerIntEnable(SOC_DMTIMER_7_REGS, DMTIMER_INT_OVF_EN_FLAG); /* Start the DMTimer */ DMTimerEnable(SOC_DMTIMER_7_REGS); while(FALSE == flagIsr) ; /* Disable the DMTimer interrupts */ DMTimerIntDisable(SOC_DMTIMER_7_REGS, DMTIMER_INT_OVF_EN_FLAG); #else while(milliSec != 0) { DMTimerCounterSet(SOC_DMTIMER_7_REGS, 0); DMTimerEnable(SOC_DMTIMER_7_REGS); while(DMTimerCounterGet(SOC_DMTIMER_7_REGS) < TIMER_1MS_COUNT); DMTimerDisable(SOC_DMTIMER_7_REGS); milliSec--; } #endif }
/** * /brief This function starts the timer. * * /milliSec Maximum value = TIMER_OVERFLOW/TIMER_1MS_COUNT. * * /NOTE SysDelay functionality cannot be used till SysStopTimer is called. */ void SysStartTimer(unsigned int milliSec) { #ifdef DELAY_USE_INTERRUPTS unsigned int countVal = TIMER_OVERFLOW - (milliSec * TIMER_1MS_COUNT); DMTimerCounterSet(SOC_DMTIMER_7_REGS, countVal); flagIsr = FALSE; /* Enable the DMTimer interrupts */ DMTimerIntEnable(SOC_DMTIMER_7_REGS, DMTIMER_INT_OVF_EN_FLAG); /* Start the DMTimer */ DMTimerEnable(SOC_DMTIMER_7_REGS); #else DMTimerCounterSet(SOC_DMTIMER_7_REGS, 0); DMTimerEnable(SOC_DMTIMER_7_REGS); flagIsr = milliSec; #endif }
/* ** Timer 2 Interrupt Service Routine */ static void Timer2Isr(void) { static unsigned int index = 0; /* Clear the status of the interrupt flags */ DMTimerIntStatusClear(SOC_DMTIMER_2_REGS, DMTIMER_INT_OVF_EN_FLAG); tmr2Flag = TRUE; DMTimerCounterSet(SOC_DMTIMER_2_REGS, timerCount[index++%10]); DMTimerEnable(SOC_DMTIMER_2_REGS); }
unsigned int SysTimer(unsigned int flag) { unsigned int timeInTicks=0; if(flag) { DMTimerCounterSet(SOC_DMTIMER_7_REGS, 0); DMTimerEnable(SOC_DMTIMER_7_REGS); } else { DMTimerDisable(SOC_DMTIMER_7_REGS); timeInTicks = DMTimerCounterGet(SOC_DMTIMER_7_REGS); } return timeInTicks; }
/****************************************************************************** ** FUNCTION DEFINITIONS *******************************************************************************/ int main(void) { /* This function will enable clocks for the DMTimer2 instance */ DMTimer2ModuleClkConfig(); /* Initialize the UART console */ ConsoleUtilsInit(); /* Select the console type based on compile time check */ ConsoleUtilsSetType(CONSOLE_UART); /* Enable IRQ in CPSR */ IntMasterIRQEnable(); /* Register DMTimer2 interrupts on to AINTC */ DMTimerAintcConfigure(); /* Perform the necessary configurations for DMTimer */ DMTimerSetUp(); /* Enable the DMTimer interrupts */ DMTimerIntEnable(SOC_DMTIMER_2_REGS, DMTIMER_INT_OVF_EN_FLAG); ConsoleUtilsPrintf("Tencounter: "); /* Start the DMTimer */ DMTimerEnable(SOC_DMTIMER_2_REGS); while(cntValue) { if(flagIsr == 1) { ConsoleUtilsPrintf("\b%d",(cntValue - 1)); cntValue--; flagIsr = 0; } } /* Stop the DMTimer */ DMTimerDisable(SOC_DMTIMER_2_REGS); PRINT_STATUS(S_PASS); /* Halt the program */ while(1); }
/* ** Configure and start the Timer */ static void TimerSetupAndEnable(void) { /* This function will enable clocks for the DMTimer2 instance */ DMTimer2ModuleClkConfig(); /* Load the counter with the initial count value */ DMTimerCounterSet(TIMER_INST_BASE, TIMER_INITIAL_COUNT); /* Load the load register with the reload count value */ DMTimerReloadSet(TIMER_INST_BASE, TIMER_RLD_COUNT); /* Configure the DMTimer for Auto-reload and compare mode */ DMTimerModeConfigure(TIMER_INST_BASE, DMTIMER_AUTORLD_NOCMP_ENABLE); /* Enable the DMTimer interrupts */ DMTimerIntEnable(TIMER_INST_BASE, DMTIMER_INT_OVF_EN_FLAG); /* Start the DMTimer */ DMTimerEnable(TIMER_INST_BASE); IntSystemEnable(TIMER_INT_NUM); }
static void TouchScreenIsr() { unsigned int wordsLeft = 0; unsigned int status; unsigned int arr_x[5] = {0,0,0,0,0}; unsigned int arr_y[5] = {0,0,0,0,0}; unsigned int x_data = 0; unsigned int y_data = 0; unsigned int i = 0; unsigned int sum = 0; status = TSCADCIntStatus(TSC_ADC_INSTANCE); if(status & TSCADC_FIFO1_THRESHOLD_INT) { wordsLeft = TSCADCFIFOWordCountRead(TSC_ADC_INSTANCE, TSCADC_FIFO_0); while(wordsLeft) { x_data = TSCADCFIFOADCDataRead(TSC_ADC_INSTANCE, TSCADC_FIFO_0); arr_x[i++] = x_data; wordsLeft = TSCADCFIFOWordCountRead(TSC_ADC_INSTANCE, TSCADC_FIFO_0); } sum = arr_x[1] + arr_x[2] + arr_x[3]; sum = sum / 3; x_data = sum; wordsLeft = TSCADCFIFOWordCountRead(TSC_ADC_INSTANCE, TSCADC_FIFO_1); i = 0; while(wordsLeft) { y_data = TSCADCFIFOADCDataRead(TSC_ADC_INSTANCE, TSCADC_FIFO_1); arr_y[i++] = y_data; wordsLeft = TSCADCFIFOWordCountRead(TSC_ADC_INSTANCE, TSCADC_FIFO_1); } sum = arr_y[1] + arr_y[2] + arr_y[3]; sum = sum / 3; y_data = sum; } x_val[Index] = x_data; y_val[Index] = y_data; Index = (Index + 0x01) & 0x01; /* Load the counter with the initial count value */ DMTimerCounterSet(SOC_DMTIMER_2_REGS, 0); /* Start the DMTimer */ DMTimerEnable(SOC_DMTIMER_2_REGS); TSCADCIntStatusClear(TSC_ADC_INSTANCE, TSCADC_FIFO1_THRESHOLD_INT); IsTSPress = 1; StepEnable(); }
/* ** ISR for Touch Screen */ static void TouchScreenIsr(void) { volatile unsigned int wordsLeft = 0; unsigned int status; unsigned int i = 0; unsigned int prevVal_x = 0xFFFFFFFF; unsigned int prevVal_y = 0xFFFFFFFF; unsigned int currDiff_x; unsigned int currDiff_y; unsigned int prevDiff_x = 0xFFFFFFFF; unsigned int prevDiff_y = 0xFFFFFFFF; unsigned int readx1; unsigned int ready1; status = TSCADCIntStatus(SOC_ADC_TSC_0_REGS); wordsLeft = TSCADCFIFOWordCountRead(SOC_ADC_TSC_0_REGS, TSCADC_FIFO_1); if(status & TSCADC_FIFO1_THRESHOLD_INT) { for (i = 0; i < wordsLeft; i++) { readx1 = TSCADCFIFOADCDataRead(SOC_ADC_TSC_0_REGS, TSCADC_FIFO_0); readx1 = readx1 & 0xfff; if (readx1 > prevVal_x) { currDiff_x = readx1 - prevVal_x; } else { currDiff_x = prevVal_x - readx1; } if (currDiff_x < prevDiff_x) { prevDiff_x = currDiff_x; xdata = readx1; } prevVal_x = readx1; ready1 = TSCADCFIFOADCDataRead(SOC_ADC_TSC_0_REGS, TSCADC_FIFO_1); ready1 &= 0xfff; if (ready1 > prevVal_y) { currDiff_y = ready1 - prevVal_y; } else { currDiff_y = prevVal_y - ready1; } if (currDiff_y < prevDiff_y) { prevDiff_y = currDiff_y; ydata = ready1; } prevVal_y = ready1; wordsLeft = TSCADCFIFOWordCountRead(SOC_ADC_TSC_0_REGS, TSCADC_FIFO_1); } x_data[dbidx] = xdata; y_data[dbidx] = ydata; dbidx = (dbidx + 1) & 0x01; } /* Restart the timer counter */ DMTimerCounterSet(SOC_DMTIMER_3_REGS, 0); DMTimerEnable(SOC_DMTIMER_3_REGS); //TSCADCIntStatusClear(SOC_ADC_TSC_0_REGS, TSCADC_FIFO1_THRESHOLD_INT); TSCADCIntStatusClear(SOC_ADC_TSC_0_REGS, TSCADC_FIFO1_THRESHOLD_INT | TSCADC_ASYNC_HW_PEN_EVENT_INT | TSCADC_SYNC_PEN_EVENT_INT | TSCADC_FIFO0_UNDER_FLOW_INT | TSCADC_FIFO1_UNDER_FLOW_INT | TSCADC_END_OF_SEQUENCE_INT | TSCADC_FIFO0_THRESHOLD_INT | TSCADC_FIFO0_OVER_RUN_INT | TSCADC_FIFO1_OVER_RUN_INT | TSCADC_OUT_OF_RANGE_INT | TSCADC_PEN_UP_EVENT_INT); IsTSPress = 1; touchRelease = 0; StepEnable(); }
/* ** Starts the Timer */ void Timer6Start(void) { /* Start the DMTimer */ DMTimerEnable(SOC_DMTIMER_6_REGS); }