【有奖征文】一步步学会LM4F Launchpad之AD

sky-Hawk where · 发表于 2012-12-31 08:42:04

本帖最后由 spring 于 2013-1-9 12:47 编辑

LM4F Launchpad之AD

今天上班才发现自己弄好的没有上传，今天最后一天征文了，获不获奖不重要，主要是分享一下，相互交流，同时也表示对爱板网的支持

可能有些地方没有考虑全面，做的还不够好，欢迎大家随时来拍砖，
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/adc.h"
#include "driverlib/gpio.h"
#include "driverlib/sysctl.h"
#include "utils/uartstdio.h"

void InitConsole(void)

{
   SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
   GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
UARTStdioInit(0);
}
int main(void)
{
unsigned long ulADC0_Value[1];
   unsigned long ulTemp_ValueC;
unsigned long ulTemp_ValueF;
SysCtlClockSet(SYSCTL_SYSDIV_10 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
InitConsole();
UARTprintf("ADC ->\n");
UARTprintf("  Type: Internal Temperature Sensor\n");
UARTprintf("  Samples: One\n");
UARTprintf("  Update Rate: 250ms\n");
UARTprintf("  Input Pin: Internal temperature sensor\n\n");
      SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
   ADCSequenceConfigure(ADC0_BASE, 3, ADC_TRIGGER_PROCESSOR, 0);
   ADCSequenceStepConfigure(ADC0_BASE, 3, 0, ADC_CTL_TS | ADC_CTL_IE |ADC_CTL_END);
   ADCSequenceEnable(ADC0_BASE, 3);
   ADCIntClear(ADC0_BASE, 3);
while(1)
{
            ADCProcessorTrigger(ADC0_BASE, 3);
            while(!ADCIntStatus(ADC0_BASE, 3, false))
   {
   }
            ADCIntClear(ADC0_BASE, 3);
            ADCSequenceDataGet(ADC0_BASE, 3, ulADC0_Value);
      // ulTemp_ValueC = ((1475 * 1023) - (2250 * ulADC0_Value[0])) / 10230;
            ulTemp_ValueC = ((1475 * 4095) - (2250 * ulADC0_Value[0])) / 40950;
            ulTemp_ValueF = ((ulTemp_ValueC * 9) + 160) / 5;
            UARTprintf("Temperature = %3d*C or %3d*F\r", ulTemp_ValueC,ulTemp_ValueF);
            SysCtlDelay(SysCtlClockGet() / 12);
}
}

操作图及程序.doc (432.5 KB, 下载次数: 38)