[问答]

换ADC1就不能工作

2019-8-30 07:34:43 731 adc 中断

0 ADC的问题，不知道是不是9B96的问题还是我程序的问题。 void adc1Init(void) [ // SysCtlPeripheralEnable(GPIO_PORTB_BASE); //GPIOPinTypeADC(GPIO_PORTB_BASE,GPIO_PIN_4 ); ADCSequenceDisable(ADC1_BASE,3); // 配置前先禁止采样序列 SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC1); // 使能ADC模块 SysCtlADCSpeedSet(SYSCTL_ADCSPEED_1MSPS); // 设置ADC采样速率 // 采样序列配置：ADC基址，采样序列编号，触发事件，采样优先级 ADCSequenceConfigure(ADC1_BASE, 0, ADC_TRIGGER_PROCESSOR, 1); // 采样步进设置：ADC基址，采样序列编号，步值，通道设置 ADCSequenceStepConfigure(ADC1_BASE, 3, 0, ADC_CTL_TS \| ADC_CTL_END \| ADC_CTL_IE ) ; ADCReferenceSet(ADC1_BASE,ADC_REF_INT); ADCResolutionSet(ADC1_BASE,ADC_RES_10BIT) ; ADCIntClear(ADC1_BASE, 3); ADCSequenceEnable(ADC1_BASE, 3); // 使能采样序列 ADCIntEnable(ADC1_BASE, 3); // 使能ADC中断 IntEnable(INT_ADC1SS3) ; // 使能ADC采样序列中断 IntMasterEnable() ; // 使能处理器中断 ] 在DKLM3S9B96上跑的。换ADC0就能工作，换ADC1就不能工作。调用这个初始化函数，程序就会死在里面。何解？中断向量也注册了 0
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0 参考例程如下： //*************************************************************************** #include "inc/hw_ints.h" #include "inc/hw_memmap.h" #include "inc/hw_types.h" #include "driverlib/gpio.h" #include "driverlib/interrupt.h" #include "driverlib/sysctl.h" #include "driverlib/adc.h" #include "driverlib/timer.h" #include "utils/ustdlib.h" #include "utils/uartstdio.h" #include "driverlib/sysctl.h" #include "driverlib/systick.h" #include "utils/cmdline.h" void Delay(unsigned long count ) [ unsigned i,j; for(i=0;i [for(j=0;j ] int iADC0_read=1; // Indicates if the ADC is ready (1) or busy (0) unsigned long ulBlinkSpeed = 0; // Timer interrupt frequency (0=low; 1=high) //******** User Defines ******** // // 12-bit resolution bit // //#define ADC_RES_12BIT 0x10 // // Offset for ADC control register // #define ADC_O_CTL 0x38 //************************************************************************* // Interrupt handler for the Timer0 interrupt //************************************************************************* void Timer0IntHandler(void) [ unsigned long ulPinStatus; // Clear the timer interrupt. TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT); // Read the current state of the output ulPinStatus = GPIOPinRead(GPIO_PORTD_BASE, GPIO_PIN_0); // Toggle Bit 0 ulPinStatus ^= GPIO_PIN_0; // Write the result back into the GPIO Pin 0 Data Register GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0, ulPinStatus); // Check if the ADC is ready if (iADC0_read == 1) [ // Trigger new ADC Conversion using Sample Sequencer 0 ADCProcessorTrigger(ADC1_BASE,2); // Indicate that the ADC is busy iADC0_read = 0; ] ] //************************************************************************* // Interrupt handler for the ADC Sample Sequencer 2 (SS2) interrupt //*************************************************************************** void ADC2IntHandler(void) [ unsigned long adc0Value[4]=[0,0,0,0]; // Holds the ADC result char adc0String[4]; // Holds the string-converted ADC result unsigned long InputVoltage; //Input voltage // Clear the ADC0 interrupt. ADCIntClear(ADC1_BASE,2); // Read the data from the Result Buffer of ADC SS2 // We know that we have only one result in the buffer // If we have more than one result then adc0_value must be an array ADCSequenceDataGet(ADC1_BASE, 2,adc0Value); //ADC AT 12 BIT MODE,PLEASE REFER TO ADC CONVERSION VALUE Y=1352X+28 =>INPUT VOLTAGE VALUE X=((Y-28)/1352)1000(MV) InputVoltage= (adc0Value[0]-28/1352)1000; // Delay(6553000); //adc0Value[1]=((1475 * 1023) - (2250 * adc0Value[1])) / 10230; //centigrade temperature IntMasterDisable(); UARTprintf("n%d",adc0Value[0]); UARTprintf("n%d",adc0Value[1]); //UARTprintf("n%d",adc0Value[2]); //UARTprintf("n%d",adc0Value[3]); // Disable interrupts globally to ensure we don't interrupt communication with the display //IntMasterDisable(); iADC0_read = 1; // while(1); // Re-enable interrupts globally IntMasterEnable(); ] int main(void) [ //*************************************************************************** // Clock Setup //************************************************************************* // Set the clocking to run directly from the crystal. SysCtlClockSet(SYSCTL_SYSDIV_4\| SYSCTL_USE_PLL \| SYSCTL_OSC_MAIN \| SYSCTL_XTAL_16MHZ); // Enable Timer 0, ADC0 and GPIO Block D Peripheral Clocks SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0); SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC1); SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0); //LED on PD0 SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD); // Reset the state of Peripheral ADC0 // //SysCtlPeripheralReset(SYSCTL_PERIPH_ADC0); // // Setup the AIN0 on PE7 ... // SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE); GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_3); //GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_6); //GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_5); // GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_4); // Enable the peripherals used by this example. // IntMasterDisable(); // // Set GPIO A0 and A1 as UART. // GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 \| GPIO_PIN_1); // // Initialize the UART as a console for text I/O. // UARTStdioInit(0); // // Print hello message to user. // UARTprintf("nnADC Test Example Programn"); //************************************************************************* // GPIO Setup //************************************************************************* // Set GPIO_F, pin 0 as output (used for the LED) GPIOPinTypeGPIOOutput(GPIO_PORTD_BASE, GPIO_PIN_0); // Disable processor interrupts IntMasterDisable(); //************************************************************************* // Timer 0 Setup //************************************************************************* // Configure Timer0 as 32-bit periodic timer TimerConfigure(TIMER0_BASE, TIMER_CFG_32_BIT_PER); // Set Timer0 period as 1/4 of the system clock, i.e. 4 interrupts per second TimerLoadSet(TIMER0_BASE, TIMER_A, SysCtlClockGet() /4); // Configure the timer to generate an interrupt on time-out TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT); // Enable the TImer Interrupt in the NVIC IntEnable(INT_TIMER0A); // Enable the timer TimerEnable(TIMER0_BASE, TIMER_A); // // Set 12-bit resolution // HWREG(ADC1_BASE + ADC_O_CTL) = HWREG(ADC1_BASE + ADC_O_CTL)\| ADC_RES_12BIT; // ADCSequenceConfigure(ADC1_BASE,2, ADC_TRIGGER_PROCESSOR, 0); ADCHardwareOversampleConfigure(ADC1_BASE,16); ADCSequenceStepConfigure(ADC1_BASE, 2,0, ADC_CTL_CH0); //ADC0 channel 0 ADCSequenceStepConfigure(ADC1_BASE, 2,1, ADC_CTL_TS\|ADC_CTL_IE \| ADC_CTL_END ); //setup temperature channel // Clear the ADC0 interrupt. ADCIntClear(ADC1_BASE,2); ADCIntEnable(ADC1_BASE, 2); // Enable ADC SS2 ADCSequenceEnable(ADC1_BASE, 2); // Enable the ADC0 interrupt in the NVIC IntEnable(INT_ADC1SS2); // Indicate that ADC SS2 is ready for sampling iADC0_read = 1; //************************************************************************* // Global Interrupt Enable //*************************************************************************** // Enable processor interrupts IntMasterEnable(); IntPrioritySet(INT_TIMER0A,0x40); IntPrioritySet(INT_ADC1SS2,0x40); // Loop forever waiting for interrupts while(1) [ ] ]

2019-8-30 07:53:51 评论举报 1^# 王蓓