在线时间16 小时
UID350471
ST金币101
蝴蝶豆2
注册时间2012-3-30
该用户从未签到
中级会员
- 最后登录
- 2020-10-16
|
STM32F030 ADC采样序列中包括IN0,IN1,IN2三个通道,采用单次转换模式,软件触发启动,但是发现采样转换到最后一个通道IN2时,EOC不会置位,程序进入超时状态。有哪位朋友碰到过此问题?
主要代码如下:
uint16_t ADCValue[3;
void MX_ADC_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
hadc.Instance = ADC1;
hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
hadc.Init.Resolution = ADC_RESOLUTION_12B;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc.Init.LowPowerAutoWait = DISABLE;
hadc.Init.LowPowerAutoPowerOff = DISABLE;
hadc.Init.ContinuousConvMode = DISABLE;
hadc.Init.DiscontinuousConvMode = DISABLE;
hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc.Init.DMAContinuousRequests = DISABLE;
hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;
if (HAL_ADC_Init(&hadc) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
sConfig.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
sConfig.Channel = ADC_CHANNEL_1;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
sConfig.Channel = ADC_CHANNEL_2;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
void Get_ADCVal(void)
{
uint8_t i;
if (HAL_ADC_Start(&hadc) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
for ( i=0; i<3; i++ )
{
if (HAL_ADC_PollForConversion(&hadc, 20) != HAL_OK)
_Error_Handler(__FILE__, __LINE__); // ********** 当 i 递增到2时,程序执行死在这里!!!!!!!!!!
else
ADCValue[i = HAL_ADC_GetValue(&hadc);
}
// HAL_ADC_Stop(&hadc);
} |
|