Posted on October 11, 2016 at 11:54Hello I am trying to use the ADC like this:
ADC_ChannelConfTypeDef sConfig;
adc.Instance = ADC1;
adc.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
adc.Init.Resolution = ADC_RESOLUTION_12B;
adc.Init.ScanConvMode = DISABLE;
adc.Init.ContinuousConvMode = DISABLE;
adc.Init.DiscontinuousConvMode = DISABLE;
adc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
adc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
adc.Init.NbrOfConversion = 1;
adc.Init.DMAContinuousRequests = DISABLE;
adc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&adc) != HAL_OK)
{
//Error_Handler();
}
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
if (HAL_ADC_ConfigChannel(&adc, &sConfig) != HAL_OK)
{
//Error_Handler();
}
GPIO_InitTypeDef GPIO_InitStruct;
if(adcHandle->Instance==ADC1)
{
__HAL_RCC_ADC1_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);
}
HAL_ADC_Start
(
&
g_AdcHandle
)
;
for
(
;
;
)
{
if
(
HAL_ADC_PollForConversion
(
&
g_AdcHandle
,
1000000
)
==
HAL_OK
)
{
g_ADCValue
=
HAL_ADC_GetValue
(
&
g_AdcHandle
)
;
g_MeasurementNumber
++
;
}
}
But it gets stuck in this code, looking for EOC flag:
while(!(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOC)))
{
/* Check if timeout is disabled (set to infinite wait) */
if(Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0U) || ((HAL_GetTick() - tickstart ) > Timeout))
{
/* Update ADC state machine to timeout */
SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
/* Process unlocked */
__HAL_UNLOCK(hadc);
return HAL_TIMEOUT;
}
}
}
Any ideas why this happens?
#adc #hal
