easyarm615的ADC采样的问题

只看该作者 · 2008-4-10 23:13

我用的是easyarm615底板。编写程序实现如下的功能：使用adc的采样序列0，对0通道的模拟电压进行转换，转换完成后将数据存储，并点亮LED1指示数据存储完毕,然后熄灭，但是上电以后LED1一直亮，不知道原因。我用IAR,程序编好以后我点“debug“就会出现如下提示：could no find the source file:"c:cygwinhomekir chersanboxDriverlibuildDriverlib.PDL-LM3SDriverlib.testsrcadc.c",would you like to located you self?
程序如下：
#include "hw_types.h"
#include "hw_memmap.h"
#include "hw_gpio.h"
#include "hw_ints.h"
#include "hw_adc.h"
#include "sysctl.h"
#include "gpio.h"
#include "adc.h"
#include "debug.h"

#define LED1 GPIO_PIN_7
#define KEY GPIO_PIN_4
void Go2Jtag(void)//防止jtag死锁
{
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
GPIODirModeSet(GPIO_PORTD_BASE,KEY,GPIO_DIR_MODE_IN);
if(GPIOPinRead(GPIO_PORTD_BASE,KEY)==0)
{
while(1);
}
}
void delay(int iCount)
{
for(;iCount;iCount--)
{
};
}
unsigned long ulData;

int main(void)
{
Go2Jtag();
SysCtlClockSet(SYSCTL_SYSDIV_1|SYSCTL_USE_PLL|SYSCTL_OSC_MAIN|SYSCTL_XTAL_6MHZ);
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC);
SysCtlADCSpeedSet(SYSCTL_ADCSPEED_125KSPS);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
GPIODirModeSet(GPIO_PORTD_BASE,LED1,GPIO_DIR_MODE_OUT);//配置LED1连接的GPIO口
ADCSequenceDisable(ADC_BASE,0);
ADCSequenceConfigure(ADC_BASE,0,ADC_TRIGGER_PROCESSOR,0);
ADCSequenceStepConfigure(ADC_BASE,0,0,ADC_CTL_CH0|ADC_CTL_END|ADC_CTL_IE);
ADCSequenceEnable(ADC_BASE,0);//使能采样序列0
while(1)
{
ADCProcessorTrigger(ADC_BASE,0);//程序触发采样序列
while((HWREG(ADC_BASE+ADC_O_X_SSFSTAT)&0x00000100));
ADCSequenceDataGet(ADC_BASE,0,&ulData);
ulData=(ulData*1000*3)/1024;
GPIOPinWrite(GPIO_PORTD_BASE,LED1,~LED1);//如果采样完成，则LED1亮
delay(200000);//延长一段时间
GPIOPinWrite(GPIO_PORTD_BASE,LED1,LED1);//熄灭LED1
}
}