📄 stm8l15x_adc.c
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@endverbatim
* @{
*/
/**
* @brief Enables or disables the selected ADC channel(s).
* @param ADCx where x can be 1 to select the specified ADC peripheral.
* @param ADC_Channels: specifies the ADC channels to be initialized
* This parameter can be one of the following values:
* @arg ADC_Channel_0: Channel 0
* @arg ADC_Channel_1: Channel 1
* @arg ADC_Channel_2: Channel 2
* @arg ADC_Channel_3: Channel 3
* @arg ADC_Channel_4: Channel 4
* @arg ADC_Channel_5: Channel 5
* @arg ADC_Channel_6: Channel 6
* @arg ADC_Channel_7: Channel 7
* @arg ADC_Channel_8: Channel 8
* @arg ADC_Channel_9: Channel 9
* @arg ADC_Channel_10: Channel 10
* @arg ADC_Channel_11: Channel 11
* @arg ADC_Channel_12: Channel 12
* @arg ADC_Channel_13: Channel 13
* @arg ADC_Channel_14: Channel 14
* @arg ADC_Channel_15: Channel 15
* @arg ADC_Channel_16: Channel 16
* @arg ADC_Channel_17: Channel 17
* @arg ADC_Channel_18: Channel 18
* @arg ADC_Channel_19: Channel 19
* @arg ADC_Channel_20: Channel 20
* @arg ADC_Channel_21: Channel 21
* @arg ADC_Channel_22: Channel 22
* @arg ADC_Channel_23: Channel 23
* @arg ADC_Channel_24: Channel 24
* @arg ADC_Channel_25: Channel 25
* @arg ADC_Channel_26: Channel 26
* @arg ADC_Channel_27: Channel 27
* @arg ADC_Channel_Vrefint: Vrefint Channel
* @arg ADC_Channel_TempSensor: Temperature sensor Channel
* @arg ADC_Channel_00To07: select from channel00 to channel07
* @arg ADC_Channel_08To15: select from channel08 to channel15
* @arg ADC_Channel_16To23: select from channel16 to channel23
* @arg ADC_Channel_24To27: select from channel24 to channel27
* @param NewState : new state of the specified ADC channel(s).
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void ADC_ChannelCmd(ADC_TypeDef* ADCx, ADC_Channel_TypeDef ADC_Channels, FunctionalState NewState)
{
uint8_t regindex = 0;
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
regindex = (uint8_t)((uint16_t)ADC_Channels >> 8);
if (NewState != DISABLE)
{
/* Enable the selected ADC channel(s). */
ADCx->SQR[regindex] |= (uint8_t)(ADC_Channels);
}
else
{
/* Disable the selected ADC channel(s). */
ADCx->SQR[regindex] &= (uint8_t)(~(uint8_t)(ADC_Channels));
}
}
/**
* @brief Configures the sampling time for the selected ADC channel group.
* @param ADCx where x can be 1 to select the specified ADC peripheral.
* @param ADC_GroupChannels : ADC channel group to configure.
* This parameter can be one of the following values:
* @arg ADC_Group_SlowChannels: Slow Channels group
* @arg ADC_Group_FastChannels: Fast Channels group
* @note The channels of 1st ADC Group can be channels 0..23
* @note The channels of 2nd ADC Group can be channels 24..27 (depending on the MCU
* package density) and Temperature Sensor and Vrefint channels.
* @param ADC_SamplingTime : Specifies the sample time value
* This parameter can be one of the following values:
* @arg ADC_SamplingTime_4Cycles: Sampling Time Cycles is 4
* @arg ADC_SamplingTime_9Cycles: Sampling Time Cycles is 9
* @arg ADC_SamplingTime_16Cycles: Sampling Time Cycles is 16
* @arg ADC_SamplingTime_24Cycles: Sampling Time Cycles is 24
* @arg ADC_SamplingTime_48Cycles: Sampling Time Cycles is 48
* @arg ADC_SamplingTime_96Cycles: Sampling Time Cycles is 96
* @arg ADC_SamplingTime_192Cycles: Sampling Time Cycles is 192
* @arg ADC_SamplingTime_384Cycles: Sampling Time Cycles is 384
* @retval None
*/
void ADC_SamplingTimeConfig(ADC_TypeDef* ADCx,
ADC_Group_TypeDef ADC_GroupChannels,
ADC_SamplingTime_TypeDef ADC_SamplingTime)
{
/* Check the parameters */
assert_param(IS_ADC_GROUP(ADC_GroupChannels));
assert_param(IS_ADC_SAMPLING_TIME_CYCLES(ADC_SamplingTime));
if ( ADC_GroupChannels != ADC_Group_SlowChannels)
{
/* Configures the sampling time for the Fast ADC channel group. */
ADCx->CR3 &= (uint8_t)~ADC_CR3_SMPT2;
ADCx->CR3 |= (uint8_t)(ADC_SamplingTime << 5);
}
else
{
/* Configures the sampling time for the Slow ADC channel group. */
ADCx->CR2 &= (uint8_t)~ADC_CR2_SMPT1;
ADCx->CR2 |= (uint8_t)ADC_SamplingTime;
}
}
/**
* @brief Configures the status of the Schmitt Trigger for the selected ADC
* channel(s).
* @param ADCx where x can be 1 to select the specified ADC peripheral.
* @param ADC_Channels: specifies the ADC channels to be initialized,
* This parameter can be one of the following values:
* @arg ADC_Channel_0: Channel 0
* @arg ADC_Channel_1: Channel 1
* @arg ADC_Channel_2: Channel 2
* @arg ADC_Channel_3: Channel 3
* @arg ADC_Channel_4: Channel 4
* @arg ADC_Channel_5: Channel 5
* @arg ADC_Channel_6: Channel 6
* @arg ADC_Channel_7: Channel 7
* @arg ADC_Channel_8: Channel 8
* @arg ADC_Channel_9: Channel 9
* @arg ADC_Channel_10: Channel 10
* @arg ADC_Channel_11: Channel 11
* @arg ADC_Channel_12: Channel 12
* @arg ADC_Channel_13: Channel 13
* @arg ADC_Channel_14: Channel 14
* @arg ADC_Channel_15: Channel 15
* @arg ADC_Channel_16: Channel 16
* @arg ADC_Channel_17: Channel 17
* @arg ADC_Channel_18: Channel 18
* @arg ADC_Channel_19: Channel 19
* @arg ADC_Channel_20: Channel 20
* @arg ADC_Channel_21: Channel 21
* @arg ADC_Channel_22: Channel 22
* @arg ADC_Channel_23: Channel 23
* @arg ADC_Channel_24: Channel 24
* @arg ADC_Channel_25: Channel 25
* @arg ADC_Channel_26: Channel 26
* @arg ADC_Channel_27: Channel 27
* @arg ADC_Channel_Vrefint: Vrefint Channel
* @arg ADC_Channel_TempSensor: Temperature sensor Channel
* @arg ADC_Channel_00To07: select from channel00 to channel07
* @arg ADC_Channel_08To15: select from channel08 to channel15
* @arg ADC_Channel_16To23: select from channel16 to channel23
* @arg ADC_Channel_24To27: select from channel24 to channel27
* @param NewState : new state of the Schmitt Trigger
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void ADC_SchmittTriggerConfig(ADC_TypeDef* ADCx, ADC_Channel_TypeDef ADC_Channels,
FunctionalState NewState)
{
uint8_t regindex = 0;
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
regindex = (uint8_t)((uint16_t)ADC_Channels >> 8);
if (NewState != DISABLE)
{
/* Enable the Schmitt Trigger for the selected ADC channel(s).*/
ADCx->TRIGR[regindex] &= (uint8_t)(~(uint8_t)ADC_Channels);
}
else
{
/* Disable the Schmitt Trigger for the selected ADC channel(s).*/
ADCx->TRIGR[regindex] |= (uint8_t)(ADC_Channels);
}
}
/**
* @brief Returns the last ADC converted data.
* @param ADCx where x can be 1 to select the specified ADC peripheral.
* @retval The Data conversion value.
*/
uint16_t ADC_GetConversionValue(ADC_TypeDef* ADCx)
{
uint16_t tmpreg = 0;
/* Get last ADC converted data.*/
tmpreg = (uint16_t)(ADCx->DRH);
tmpreg = (uint16_t)((uint16_t)((uint16_t)tmpreg << 8) | ADCx->DRL);
/* Return the selected ADC conversion value */
return (uint16_t)(tmpreg) ;
}
/**
* @}
*/
/** @defgroup ADC_Group5 ADC Channels DMA Configuration function
* @brief ADC Channels DMA Configuration function
*
@verbatim
===============================================================================
ADC Channels DMA Configuration function
===============================================================================
This section provides a function allowing to configure the DMA for ADC
channel.
Since converted channel values are stored into a unique data register,
it is useful to use DMA for conversion of more than one channel. This
avoids the loss of the data already stored in the ADC Data register.
When the DMA mode is enabled (using the ADC_DMACmd() function), after each
conversion of a channel, a DMA request is generated.
@endverbatim
* @{
*/
/**
* @brief Enables or disables the specified ADC DMA request.
* @param ADCx where x can be 1 to select the specified ADC peripheral.
* @param NewState : new state of the specified ADC DMA transfer.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void ADC_DMACmd(ADC_TypeDef* ADCx, FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
/* Enable the specified ADC DMA request */
ADCx->SQR[0] &= (uint8_t)~ADC_SQR1_DMAOFF;
}
else
{
/* Disable the specified ADC DMA request */
ADCx->SQR[0] |= ADC_SQR1_DMAOFF;
}
}
/**
* @}
*/
/** @defgroup ADC_Group6 Interrupts and flags management functions
* @brief Interrupts and flags management functions
*
@verbatim
===============================================================================
Interrupts and flags management functions
===============================================================================
This section provides functions allowing to configure the ADC Interrupts and
get the status and clear flags and Interrupts pending bits.
The ADC provides 3 Interrupt sources and 3 Flags:
Flags :
----------
1. ADC_FLAG_OVR : Overrun detection when ADC channel converted data is lost
2. ADC_FLAG_EOC : End of conversion⌨️ 快捷键说明
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