Example #1
0
rt_uint8_t battery_adc_initialize(void)
{
	
	ROM_SysCtlADCSpeedSet(SYSCTL_ADCSPEED_1MSPS);
	ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
	ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
	
	
	ROM_ADCHardwareOversampleConfigure(ADC0_BASE,64);
	ROM_GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_2);
	
	ADCSequenceConfigure(ADC0_BASE, 3,ADC_TRIGGER_PROCESSOR, 0);
	ROM_ADCSequenceStepConfigure(ADC0_BASE,3, 0, ADC_CTL_CH1| ADC_CTL_IE |ADC_CTL_END);
	
	ROM_ADCSequenceEnable(ADC0_BASE, 3);
	rt_kprintf("battery_adc_initialize\n");
	return 0;
}
//*****************************************************************************
//
// Initializes the ADC.
//
//*****************************************************************************
void
ADCInit(void)
{
    //
    // Set the ADC speed to 1 Msps.
    //
    ROM_SysCtlADCSpeedSet(SYSCTL_ADCSPEED_1MSPS);

    //
    // Configure the GPIOs used with the analog inputs.
    //
    GPIOPinTypeADC(ADC_POSITION_PORT, ADC_POSITION_PIN);
    GPIOPinTypeADC(ADC_CURRENT_PORT, ADC_CURRENT_PIN);
    GPIOPinTypeADC(ADC_VBUS_PORT, ADC_VBUS_PIN);
    GPIOPinTypeADC(ADC_VBOOTA_PORT, ADC_VBOOTA_PIN);
    GPIOPinTypeADC(ADC_VBOOTB_PORT, ADC_VBOOTB_PIN);

    //
    // Configure the ADC sample sequence that is triggered by PWM
    // generator 2
    //
    ROM_ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_PWM0, 0);
    ROM_ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CURRENT_CH);
    ROM_ADCSequenceStepConfigure(ADC0_BASE, 0, 1, ADC_VBUS_CH);
    ROM_ADCSequenceStepConfigure(ADC0_BASE, 0, 2, ADC_POSITION_CH);
    ROM_ADCSequenceStepConfigure(ADC0_BASE, 0, 3,
                                 (ADC_CTL_TS | ADC_CTL_IE | ADC_CTL_END));
    ROM_ADCSequenceEnable(ADC0_BASE, 0);

    //
    // Enable interrupts
    //
    ROM_ADCIntEnable(ADC0_BASE, 0);
    ROM_IntEnable(INT_ADC0SS0);

    //
    // Set the zero current to indicate that the initial sampling has just
    // begun.
    //
    g_usCurrentZero = 0xffff;
}
Example #3
0
//*****************************************************************************
//
// This function initializes the ADC hardware in preparation for data
// acquisition.
//
//*****************************************************************************
void
AcquireInit(void)
{
    unsigned long ulChan;

    //
    // Enable the ADC peripherals and the associated GPIO port
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOP);

    ROM_SysCtlADCSpeedSet(SYSCTL_ADCSPEED_125KSPS);

    ROM_GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 |GPIO_PIN_7 | GPIO_PIN_3);
    ROM_GPIOPinTypeADC(GPIO_PORTP_BASE, GPIO_PIN_0);

//    ROM_ADCReferenceSet(ADC0_BASE, ADC_REF_EXT_3V);
    //ROM_ADCR

    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    HWREG(GPIO_PORTB_BASE + GPIO_O_AMSEL) |= GPIO_PIN_6;
    ADCSequenceDisable(ADC0_BASE,SEQUENCER);

    ROM_ADCSequenceConfigure(ADC0_BASE, SEQUENCER, ADC_TRIGGER_TIMER, 0);

    for(ulChan = 0; ulChan < 2; ulChan++)
    {
        unsigned long ulChCtl;


        if (ulChan ==1)
        {

            ROM_ADCSequenceStepConfigure(ADC0_BASE, SEQUENCER, ulChan, ADC_CTL_CH1|ADC_CTL_IE | ADC_CTL_END);
        }
        else if(ulChan==0)
        {
        	ulChCtl = ADC_CTL_CH0;
        	ROM_ADCSequenceStepConfigure(ADC0_BASE, SEQUENCER, ulChan, ADC_CTL_CH0);
        }


    }

    ADCHardwareOversampleConfigure(ADC0_BASE, 1);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
    //SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);

    ROM_TimerConfigure(TIMER0_BASE,TIMER_CFG_32_BIT_PER );

    //100 micro
    unsigned long freq=SAMPLING_FREQUENCY;
    unsigned long period=(2*ROM_SysCtlClockGet()/(freq));

    ROM_TimerLoadSet(TIMER0_BASE, TIMER_A,period);
    ROM_TimerControlTrigger(TIMER0_BASE, TIMER_A, true);

    //ROM_TimerConfigure(TIMER1_BASE, TIMER_CFG_PERIODIC);
    //ROM_TimerLoadSet(TIMER1_BASE, TIMER_A, ROM_SysCtlClockGet() /2);




    CFAL96x64x16Init();
    GrContextInit(&sDisplayContext, &g_sCFAL96x64x16);
    sRect1.sXMin = 0;
    sRect1.sYMin = 0;
    sRect1.sXMax = GrContextDpyWidthGet(&sDisplayContext) - 1;
    sRect1.sYMax = 23;

    sRect2.sXMin = 0;
    sRect2.sYMin = 23;
    sRect2.sXMax = GrContextDpyWidthGet(&sDisplayContext) - 1;
    sRect2.sYMax = GrContextDpyHeightGet(&sDisplayContext) - 1;


	snprintf(text,sizeof(text),"STart");


    GrContextForegroundSet(&sDisplayContext, ClrDarkBlue);
    GrRectFill(&sDisplayContext, &sRect1);
    GrContextForegroundSet(&sDisplayContext, ClrWhite);
    //GrRectDraw(&sDisplayContext, &sRect1);
    GrContextFontSet(&sDisplayContext, g_pFontCm12);
    GrStringDrawCentered(&sDisplayContext,text, -1,
                         GrContextDpyWidthGet(&sDisplayContext) / 2, 10, 0);

    //GrContextForegroundSet(&sDisplayContext, ClrDarkBlue);
    //GrRectFill(&sDisplayContext, &sRect1);
    //GrContextForegroundSet(&sDisplayContext, ClrWhite);
    //GrRectDraw(&sDisplayContext, &sRect1);

    /*GrContextForegroundSet(&sDisplayContext, ClrDarkBlue);
    GrRectFill(&sDisplayContext, &sRect2);
    GrContextForegroundSet(&sDisplayContext, ClrWhite);
    GrRectDraw(&sDisplayContext, &sRect2);
*/
    compute_filter();
    maxi1=0;
    maxi2=0;
    max1=0;
    max2=0;
    res=0;
    res1=0;
    g_ulADCCount=0;
    buffer_index=0;
    ulLastADCCount=0;

}