STATIC bool is_adcx_channel(int channel) {
#if defined(STM32F4) || defined(STM32F7)
return IS_ADC_CHANNEL(channel);
#elif defined(STM32L4)
ADC_HandleTypeDef handle;
handle.Instance = ADCx;
return IS_ADC_CHANNEL(&handle, channel);
#else
#error Unsupported processor
#endif
}
STATIC bool is_adcx_channel(int channel) {
#if defined(STM32F411xE)
// The HAL has an incorrect IS_ADC_CHANNEL macro for the F411 so we check for temp
return IS_ADC_CHANNEL(channel) || channel == ADC_CHANNEL_TEMPSENSOR;
#elif defined(STM32F0) || defined(STM32F4) || defined(STM32F7) || defined(STM32H7)
return IS_ADC_CHANNEL(channel);
#elif defined(STM32L4)
ADC_HandleTypeDef handle;
handle.Instance = ADCx;
return IS_ADC_CHANNEL(&handle, channel);
#else
#error Unsupported processor
#endif
}
STATIC void adc_init_single(pyb_obj_adc_t *adc_obj) {
if (!IS_ADC_CHANNEL(adc_obj->channel)) {
return;
}
if (adc_obj->channel < ADC_NUM_GPIO_CHANNELS) {
// Channels 0-16 correspond to real pins. Configure the GPIO pin in
// ADC mode.
const pin_obj_t *pin = pin_adc1[adc_obj->channel];
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.Pin = pin->pin_mask;
GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
GPIO_InitStructure.Pull = GPIO_NOPULL;
HAL_GPIO_Init(pin->gpio, &GPIO_InitStructure);
}
ADCx_CLK_ENABLE();
ADC_HandleTypeDef *adcHandle = &adc_obj->handle;
adcHandle->Instance = ADCx;
adcHandle->Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
adcHandle->Init.Resolution = ADC_RESOLUTION12b;
adcHandle->Init.ScanConvMode = DISABLE;
adcHandle->Init.ContinuousConvMode = DISABLE;
adcHandle->Init.DiscontinuousConvMode = DISABLE;
adcHandle->Init.NbrOfDiscConversion = 0;
adcHandle->Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
adcHandle->Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
adcHandle->Init.DataAlign = ADC_DATAALIGN_RIGHT;
adcHandle->Init.NbrOfConversion = 1;
adcHandle->Init.DMAContinuousRequests = DISABLE;
adcHandle->Init.EOCSelection = DISABLE;
HAL_ADC_Init(adcHandle);
}
/*******************************************************************************
* 函数名称: ADC_InjectedChannelConfig
* 功能描述: 配置选中的ADC注入信道相应的音序器（sequencer）等级和采样时间。
* 输入参数: (1)ADCx:其中x可以是1、2或3，用来选择ADC外围模块.
* (2)ADC_Channel: 需要配置的ADC信道.
* ADC_Channel 可能的取值：
* - ADC_Channel_0: ADC信道0被选择
* - ADC_Channel_1: ADC信道1被选择
* - ADC_Channel_2: ADC信道2被选择
* - ADC_Channel_3: ADC信道3被选择
* - ADC_Channel_4: ADC信道4被选择
* - ADC_Channel_5: ADC信道5被选择
* - ADC_Channel_6: ADC信道6被选择
* - ADC_Channel_7: ADC信道7被选择
* - ADC_Channel_8: ADC信道8被选择
* - ADC_Channel_9: ADC信道9被选择
* - ADC_Channel_10: ADC信道10被选择
* - ADC_Channel_11: ADC信道11被选择
* - ADC_Channel_12: ADC信道12被选择
* - ADC_Channel_13: ADC信道13被选择
* - ADC_Channel_14: ADC信道14被选择
* - ADC_Channel_15: ADC信道15被选择
* - ADC_Channel_16: ADC信道16被选择
* - ADC_Channel_17: ADC信道17被选择
* (3)Rank:注入组音序器（sequencer）的等级,选择范围必须在1-4之间
* (4)ADC_SampleTime: ADC_SampleTime:将要为选中信道设置的采样时间值
* ADC_SampleTime.取值:
* - ADC_SampleTime_1Cycles5: 采样时间等于1.5个周期
* - ADC_SampleTime_7Cycles5: 采样时间等于7.5个周期
* - ADC_SampleTime_13Cycles5: 采样时间等于13.5个周期
* - ADC_SampleTime_28Cycles5: 采样时间等于28.5个周期
* - ADC_SampleTime_41Cycles5: 采样时间等于41.5个周期
* - ADC_SampleTime_55Cycles5: 采样时间等于55.5个周期
* - ADC_SampleTime_71Cycles5: 采样时间等于71.5个周期
* - ADC_SampleTime_239Cycles5: 采样时间等于239.5个周期
* 输出参数: 无
* 返回参数: 无
*******************************************************************************/
void ADC_InjectedChannelConfig(ADC_TypeDef* ADCx, u8 ADC_Channel, u8 Rank, u8 ADC_SampleTime)
{
u32 tmpreg1 = 0, tmpreg2 = 0, tmpreg3 = 0;
/* Check the parameters [检查参数] */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_INJECTED_RANK(Rank));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
/* if ADC_Channel_10 ... ADC_Channel_17 is selected [如果ADC_Channel_10 ... ADC_Channel_17被选择]*/
if (ADC_Channel > ADC_Channel_9)
{
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->SMPR1;
/* Calculate the mask to clear [计算需要清除的标志]*/
tmpreg2 = SMPR1_SMP_Set << (3*(ADC_Channel - 10));
/* Clear the old discontinuous mode channel count [清除过去的不间断模式通道计数器]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set [计算需要置位的标志]*/
tmpreg2 = (u32)ADC_SampleTime << (3*(ADC_Channel - 10));
/* Set the discontinuous mode channel count [设置不间断模式通道计数器]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->SMPR1 = tmpreg1;
}
else /* ADC_Channel include in ADC_Channel_[0..9] [ADC_Channel 在 ADC_Channel_[0..9]之间]*/
{
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->SMPR2;
/* Calculate the mask to clear [计算需要清除的标志]*/
tmpreg2 = SMPR2_SMP_Set << (3 * ADC_Channel);
/* Clear the old discontinuous mode channel count [清除过去的不间断模式通道计数器]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set [计算需要置位的标志]*/
tmpreg2 = (u32)ADC_SampleTime << (3 * ADC_Channel);
/* Set the discontinuous mode channel count [设置不间断模式通道计数器]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->SMPR2 = tmpreg1;
}
/* Rank configuration [序列配置]*/
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->JSQR;
/* Get JL value[取得JL值]: Number = JL+1 */
tmpreg3 = (tmpreg1 & JSQR_JL_Set)>> 20;
/* Calculate the mask to clear[计算需要清除的标志]: ((Rank-1)+(4-JL-1)) */
tmpreg2 = JSQR_JSQ_Set << (5 * (u8)((Rank + 3) - (tmpreg3 + 1)));
/* Clear the old JSQx bits for the selected rank [清除选中序列旧的JSQx位]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set[计算需要置位的标志]: ((Rank-1)+(4-JL-1)) */
tmpreg2 = (u32)ADC_Channel << (5 * (u8)((Rank + 3) - (tmpreg3 + 1)));
/* Set the JSQx bits for the selected rank [置位选中序列旧的JSQx位]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->JSQR = tmpreg1;
}
/**
* @brief Configures for the selected ADC injected channel its corresponding
* rank in the sequencer and its sample time.
* @param ADCx: where x can be 1, 2 or 3 to select the ADC peripheral.
* @param ADC_Channel: the ADC channel to configure.
* This parameter can be one of the following values:
* @arg ADC_Channel_0: ADC Channel0 selected
* @arg ADC_Channel_1: ADC Channel1 selected
* @arg ADC_Channel_2: ADC Channel2 selected
* @arg ADC_Channel_3: ADC Channel3 selected
* @arg ADC_Channel_4: ADC Channel4 selected
* @arg ADC_Channel_5: ADC Channel5 selected
* @arg ADC_Channel_6: ADC Channel6 selected
* @arg ADC_Channel_7: ADC Channel7 selected
* @arg ADC_Channel_8: ADC Channel8 selected
* @arg ADC_Channel_9: ADC Channel9 selected
* @arg ADC_Channel_10: ADC Channel10 selected
* @arg ADC_Channel_11: ADC Channel11 selected
* @arg ADC_Channel_12: ADC Channel12 selected
* @arg ADC_Channel_13: ADC Channel13 selected
* @arg ADC_Channel_14: ADC Channel14 selected
* @arg ADC_Channel_15: ADC Channel15 selected
* @arg ADC_Channel_16: ADC Channel16 selected
* @arg ADC_Channel_17: ADC Channel17 selected
* @param Rank: The rank in the injected group sequencer. This parameter must be between 1 and 4.
* @param ADC_SampleTime: The sample time value to be set for the selected channel.
* This parameter can be one of the following values:
* @arg ADC_SampleTime_1Cycles5: Sample time equal to 1.5 cycles
* @arg ADC_SampleTime_7Cycles5: Sample time equal to 7.5 cycles
* @arg ADC_SampleTime_13Cycles5: Sample time equal to 13.5 cycles
* @arg ADC_SampleTime_28Cycles5: Sample time equal to 28.5 cycles
* @arg ADC_SampleTime_41Cycles5: Sample time equal to 41.5 cycles
* @arg ADC_SampleTime_55Cycles5: Sample time equal to 55.5 cycles
* @arg ADC_SampleTime_71Cycles5: Sample time equal to 71.5 cycles
* @arg ADC_SampleTime_239Cycles5: Sample time equal to 239.5 cycles
* @retval None
*/
void ADC_InjectedChannelConfig(ADC_TypeDef* ADCx, uint8_t ADC_Channel, uint8_t Rank, uint8_t ADC_SampleTime)
{
uint32_t tmpreg1 = 0, tmpreg2 = 0, tmpreg3 = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_INJECTED_RANK(Rank));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
/* if ADC_Channel_10 ... ADC_Channel_17 is selected */
if (ADC_Channel > ADC_Channel_9)
{
/* Get the old register value */
tmpreg1 = ADCx->SMPR1;
/* Calculate the mask to clear */
tmpreg2 = SMPR1_SMP_Set << (3*(ADC_Channel - 10));
/* Clear the old channel sample time */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = (uint32_t)ADC_SampleTime << (3*(ADC_Channel - 10));
/* Set the new channel sample time */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SMPR1 = tmpreg1;
}
else /* ADC_Channel include in ADC_Channel_[0..9] */
{
/* Get the old register value */
tmpreg1 = ADCx->SMPR2;
/* Calculate the mask to clear */
tmpreg2 = SMPR2_SMP_Set << (3 * ADC_Channel);
/* Clear the old channel sample time */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = (uint32_t)ADC_SampleTime << (3 * ADC_Channel);
/* Set the new channel sample time */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SMPR2 = tmpreg1;
}
/* Rank configuration */
/* Get the old register value */
tmpreg1 = ADCx->JSQR;
/* Get JL value: Number = JL+1 */
tmpreg3 = (tmpreg1 & JSQR_JL_Set)>> 20;
/* Calculate the mask to clear: ((Rank-1)+(4-JL-1)) */
tmpreg2 = JSQR_JSQ_Set << (5 * (uint8_t)((Rank + 3) - (tmpreg3 + 1)));
/* Clear the old JSQx bits for the selected rank */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set: ((Rank-1)+(4-JL-1)) */
tmpreg2 = (uint32_t)ADC_Channel << (5 * (uint8_t)((Rank + 3) - (tmpreg3 + 1)));
/* Set the JSQx bits for the selected rank */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->JSQR = tmpreg1;
}
/**
* @brief Configures the analog watchdog.
* @note Analog watchdog thresholds can be modified while ADC conversion is on going.
* In this case, some constraints must be taken into account: the programmed threshold
* values are effective from the next ADC EOC (end of unitary conversion).
* Considering that registers write delay may happen due to bus activity, this might cause
* an uncertainty on the effective timing of the new programmed threshold values.
* @param hadc: pointer to a ADC_HandleTypeDef structure that contains
* the configuration information for the specified ADC.
* @param AnalogWDGConfig : pointer to an ADC_AnalogWDGConfTypeDef structure
* that contains the configuration information of ADC analog watchdog.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_AnalogWDGConfig(ADC_HandleTypeDef* hadc, ADC_AnalogWDGConfTypeDef* AnalogWDGConfig)
{
#ifdef USE_FULL_ASSERT
uint32_t tmp = 0;
#endif /* USE_FULL_ASSERT */
/* Check the parameters */
assert_param(IS_ADC_ANALOG_WATCHDOG(AnalogWDGConfig->WatchdogMode));
assert_param(IS_ADC_CHANNEL(AnalogWDGConfig->Channel));
assert_param(IS_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode));
#ifdef USE_FULL_ASSERT
tmp = ADC_GET_RESOLUTION(hadc);
assert_param(IS_ADC_RANGE(tmp, AnalogWDGConfig->HighThreshold));
assert_param(IS_ADC_RANGE(tmp, AnalogWDGConfig->LowThreshold));
#endif /* USE_FULL_ASSERT */
/* Process locked */
__HAL_LOCK(hadc);
if(AnalogWDGConfig->ITMode == ENABLE)
{
/* Enable the ADC Analog watchdog interrupt */
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_AWD);
}
else
{
/* Disable the ADC Analog watchdog interrupt */
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_AWD);
}
/* Clear AWDEN, JAWDEN and AWDSGL bits */
hadc->Instance->CR1 &= ~(ADC_CR1_AWDSGL | ADC_CR1_JAWDEN | ADC_CR1_AWDEN);
/* Set the analog watchdog enable mode */
hadc->Instance->CR1 |= AnalogWDGConfig->WatchdogMode;
/* Set the high threshold */
hadc->Instance->HTR = AnalogWDGConfig->HighThreshold;
/* Set the low threshold */
hadc->Instance->LTR = AnalogWDGConfig->LowThreshold;
/* Clear the Analog watchdog channel select bits */
hadc->Instance->CR1 &= ~ADC_CR1_AWDCH;
/* Set the Analog watchdog channel */
hadc->Instance->CR1 |= (uint32_t)((uint16_t)(AnalogWDGConfig->Channel));
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Configures the analog watchdog guarded single channel
* @param ADCx: where x can be 1, 2 or 3 to select the ADC peripheral.
* @param ADC_Channel: the ADC channel to configure for the analog watchdog.
* This parameter can be one of the following values:
* @arg ADC_Channel_0: ADC Channel0 selected
* @arg ADC_Channel_1: ADC Channel1 selected
* @arg ADC_Channel_2: ADC Channel2 selected
* @arg ADC_Channel_3: ADC Channel3 selected
* @arg ADC_Channel_4: ADC Channel4 selected
* @arg ADC_Channel_5: ADC Channel5 selected
* @arg ADC_Channel_6: ADC Channel6 selected
* @arg ADC_Channel_7: ADC Channel7 selected
* @arg ADC_Channel_8: ADC Channel8 selected
* @arg ADC_Channel_9: ADC Channel9 selected
* @arg ADC_Channel_10: ADC Channel10 selected
* @arg ADC_Channel_11: ADC Channel11 selected
* @arg ADC_Channel_12: ADC Channel12 selected
* @arg ADC_Channel_13: ADC Channel13 selected
* @arg ADC_Channel_14: ADC Channel14 selected
* @arg ADC_Channel_15: ADC Channel15 selected
* @arg ADC_Channel_16: ADC Channel16 selected
* @arg ADC_Channel_17: ADC Channel17 selected
* @retval None
*/
void ADC_AnalogWatchdogSingleChannelConfig(ADC_TypeDef* ADCx, uint8_t ADC_Channel)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
/* Get the old register value */
tmpreg = ADCx->CR1;
/* Clear the Analog watchdog channel select bits */
tmpreg &= CR1_AWDCH_Reset;
/* Set the Analog watchdog channel */
tmpreg |= ADC_Channel;
/* Store the new register value */
ADCx->CR1 = tmpreg;
}
/**
* @brief Configures for the selected ADC channel its corresponding
* rank in the sequencer and its sample time.
* @param ADCx: where x can be 1, 2 to select the ADC peripheral.
* @param ADC_Channel: the ADC channel to configure.
* This parameter can be one of the following values:
* @arg ADC_Channel_0: ADC Channel0 selected
* @arg ADC_Channel_1: ADC Channel1 selected
* @arg ADC_Channel_2: ADC Channel2 selected
* @arg ADC_Channel_3: ADC Channel3 selected
* @arg ADC_Channel_4: ADC Channel4 selected
* @arg ADC_Channel_5: ADC Channel5 selected
* @arg ADC_Channel_6: ADC Channel6 selected
* @arg ADC_Channel_7: ADC Channel7 selected
* @arg ADC_Channel_8: ADC Channel8 selected
* @retval : None
*/
void ADC_RegularChannelConfig(ADC_TypeDef* ADCx, uint8_t ADC_Channel, uint8_t Rank, uint8_t ADC_SampleTime)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_REGULAR_RANK(Rank));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
tmpreg = ADCx->ADCFG;
tmpreg &= ~(ADC_SMPR_SMP<<10);
ADCx->ADCFG = tmpreg|((ADC_SampleTime&ADC_SMPR_SMP)<<10);
switch(ADC_Channel)
{
/* set the CHEN0 bit for channel 0 enable*/
case ADC_Channel_0: ADCx->ADCHS |= CHEN0_ENABLE;
break;
/* set the CHEN1 bit for channel 1 enable*/
case ADC_Channel_1: ADCx->ADCHS |= CHEN1_ENABLE;
break;
/* set the CHEN2 bit for channel 2 enable*/
case ADC_Channel_2: ADCx->ADCHS |= CHEN2_ENABLE;
break;
/* set the CHEN3 bit for channel 3 enable*/
case ADC_Channel_3: ADCx->ADCHS |= CHEN3_ENABLE;
break;
/* set the CHEN4 bit for channel 4 enable*/
case ADC_Channel_4: ADCx->ADCHS |= CHEN4_ENABLE;
break;
/* set the CHEN5 bit for channel 5 enable*/
case ADC_Channel_5: ADCx->ADCHS |= CHEN5_ENABLE;
break;
/* set the CHEN6 bit for channel 6 enable*/
case ADC_Channel_6: ADCx->ADCHS |= CHEN6_ENABLE;
break;
/* set the CHEN7 bit for channel 7 enable*/
case ADC_Channel_7: ADCx->ADCHS |= CHEN7_ENABLE;
break;
/* set the SENSOREN bit for channel 8 enable*/
case ADC_Channel_8: ADCx->ADCHS |= CHEN8_ENABLE; //SENSOREN or VREFINT
break;
case ADC_Channel_All:ADCx->ADCHS |= CHALL_ENABLE; //SENSOREN or VREFINT
break;
default:
ADCx->ADCHS &= CHEN_DISABLE;
break;
}
}
/*******************************************************************************
* 函数名称: ADC_AnalogWatchdogSingleChannelConfig
* 功能描述: 配置监视单信道的模拟看门狗
* 输入参数: (1)ADCx:其中x可以是1、2或3，用来选择ADC外围模块.
* (2)ADC_Channel:将要为其配置模拟看门狗的信道.
* ADC_Channel 可能的取值：
* - ADC_Channel_0: ADC信道0被选择
* - ADC_Channel_1: ADC信道1被选择
* - ADC_Channel_2: ADC信道2被选择
* - ADC_Channel_3: ADC信道3被选择
* - ADC_Channel_4: ADC信道4被选择
* - ADC_Channel_5: ADC信道5被选择
* - ADC_Channel_6: ADC信道6被选择
* - ADC_Channel_7: ADC信道7被选择
* - ADC_Channel_8: ADC信道8被选择
* - ADC_Channel_9: ADC信道9被选择
* - ADC_Channel_10: ADC信道10被选择
* - ADC_Channel_11: ADC信道11被选择
* - ADC_Channel_12: ADC信道12被选择
* - ADC_Channel_13: ADC信道13被选择
* - ADC_Channel_14: ADC信道14被选择
* - ADC_Channel_15: ADC信道15被选择
* - ADC_Channel_16: ADC信道16被选择
* - ADC_Channel_17: ADC信道17被选择
* 输出参数: 无
* 返回参数: 无
*******************************************************************************/
void ADC_AnalogWatchdogSingleChannelConfig(ADC_TypeDef* ADCx, u8 ADC_Channel)
{
u32 tmpreg = 0;
/* Check the parameters 检查参数 */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
/* Get the old register value [取得旧的寄存器值]*/
tmpreg = ADCx->CR1;
/* Clear the Analog watchdog channel select bits [清除模拟看门狗通道选择位]*/
tmpreg &= CR1_AWDCH_Reset;
/* Set the Analog watchdog channel [置位模拟看门狗通道选择位]*/
tmpreg |= ADC_Channel;
/* Store the new register value [存储新的寄存器值]*/
ADCx->CR1 = tmpreg;
}
/**
* Configure an ADC channel on the STM32F4 ADC.
*
* @param dev The ADC device to configure
* @param cnum The channel on the ADC device to configure
* @param cfgdata An opaque pointer to channel config, expected to be
* a ADC_ChannelConfTypeDef
*
* @return 0 on success, non-zero on failure.
*/
static int
stm32f4_adc_configure_channel(struct adc_dev *dev, uint8_t cnum,
void *cfgdata)
{
int rc;
ADC_HandleTypeDef *hadc;
struct stm32f4_adc_dev_cfg *cfg;
struct adc_chan_config *chan_cfg;
GPIO_InitTypeDef gpio_td;
rc = OS_EINVAL;
if (dev == NULL && !IS_ADC_CHANNEL(cnum)) {
goto err;
}
cfg = (struct stm32f4_adc_dev_cfg *)dev->ad_dev.od_init_arg;
hadc = cfg->sac_adc_handle;
chan_cfg = &((struct adc_chan_config *)cfg->sac_chans)[cnum];
cfgdata = (ADC_ChannelConfTypeDef *)cfgdata;
if ((HAL_ADC_ConfigChannel(hadc, cfgdata)) != HAL_OK) {
goto err;
}
dev->ad_chans[cnum].c_res = chan_cfg->c_res;
dev->ad_chans[cnum].c_refmv = chan_cfg->c_refmv;
dev->ad_chans[cnum].c_configured = 1;
dev->ad_chans[cnum].c_cnum = cnum;
if (stm32f4_resolve_adc_gpio(hadc, cnum, &gpio_td)) {
goto err;
}
hal_gpio_init_stm(gpio_td.Pin, &gpio_td);
return (OS_OK);
err:
return (rc);
}
/**
* @brief Configures for the selected ADC and its sampling time.
* @param ADCx: where x can be 1 to select the ADC peripheral.
* @param ADC_Channel: the ADC channel to configure.
* This parameter can be any combination of the following values:
* @arg ADC_Channel_0: ADC Channel0 selected
* @arg ADC_Channel_1: ADC Channel1 selected
* @arg ADC_Channel_2: ADC Channel2 selected
* @arg ADC_Channel_3: ADC Channel3 selected
* @arg ADC_Channel_4: ADC Channel4 selected
* @arg ADC_Channel_5: ADC Channel5 selected
* @arg ADC_Channel_6: ADC Channel6 selected
* @arg ADC_Channel_7: ADC Channel7 selected
* @arg ADC_Channel_8: ADC Channel8 selected
* @arg ADC_Channel_9: ADC Channel9 selected
* @arg ADC_Channel_10: ADC Channel10 selected, not available for STM32F031 devices
* @arg ADC_Channel_11: ADC Channel11 selected, not available for STM32F031 devices
* @arg ADC_Channel_12: ADC Channel12 selected, not available for STM32F031 devices
* @arg ADC_Channel_13: ADC Channel13 selected, not available for STM32F031 devices
* @arg ADC_Channel_14: ADC Channel14 selected, not available for STM32F031 devices
* @arg ADC_Channel_15: ADC Channel15 selected, not available for STM32F031 devices
* @arg ADC_Channel_16: ADC Channel16 selected
* @arg ADC_Channel_17: ADC Channel17 selected
* @arg ADC_Channel_18: ADC Channel18 selected, not available for STM32F030 devices
* @param ADC_SampleTime: The sample time value to be set for the selected channel.
* This parameter can be one of the following values:
* @arg ADC_SampleTime_1_5Cycles: Sample time equal to 1.5 cycles
* @arg ADC_SampleTime_7_5Cycles: Sample time equal to 7.5 cycles
* @arg ADC_SampleTime_13_5Cycles: Sample time equal to 13.5 cycles
* @arg ADC_SampleTime_28_5Cycles: Sample time equal to 28.5 cycles
* @arg ADC_SampleTime_41_5Cycles: Sample time equal to 41.5 cycles
* @arg ADC_SampleTime_55_5Cycles: Sample time equal to 55.5 cycles
* @arg ADC_SampleTime_71_5Cycles: Sample time equal to 71.5 cycles
* @arg ADC_SampleTime_239_5Cycles: Sample time equal to 239.5 cycles
* @retval None
*/
void ADC_ChannelConfig(ADC_TypeDef* ADCx, uint32_t ADC_Channel, uint32_t ADC_SampleTime)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
/* Configure the ADC Channel */
ADCx->CHSELR |= (uint32_t)ADC_Channel;
/* Clear the Sampling time Selection bits */
tmpreg &= ~ADC_SMPR1_SMPR;
/* Set the ADC Sampling Time register */
tmpreg |= (uint32_t)ADC_SampleTime;
/* Configure the ADC Sample time register */
ADCx->SMPR = tmpreg ;
}
/**
* @brief Configures for the selected ADC and its sampling time.
* @param ADCx: where x can be 1 to select the ADC peripheral.
* @param ADC_Channel: the ADC channel to configure.
* This parameter can be any combination of the following values:
* @arg ADC_Channel_0: ADC Channel0 selected
* @arg ADC_Channel_1: ADC Channel1 selected
* @arg ADC_Channel_2: ADC Channel2 selected
* @arg ADC_Channel_3: ADC Channel3 selected
* @arg ADC_Channel_4: ADC Channel4 selected
* @arg ADC_Channel_5: ADC Channel5 selected
* @arg ADC_Channel_6: ADC Channel6 selected
* @arg ADC_Channel_7: ADC Channel7 selected
* @arg ADC_Channel_8: ADC Channel8 selected
* @arg ADC_Channel_9: ADC Channel9 selected
* @arg ADC_Channel_10: ADC Channel10 selected
* @arg ADC_Channel_11: ADC Channel11 selected
* @arg ADC_Channel_12: ADC Channel12 selected
* @arg ADC_Channel_13: ADC Channel13 selected
* @arg ADC_Channel_14: ADC Channel14 selected
* @arg ADC_Channel_15: ADC Channel15 selected
* @arg ADC_Channel_16: ADC Channel16 selected
* @arg ADC_Channel_17: ADC Channel17 selected
* @arg ADC_Channel_18: ADC Channel18 selected
* @param ADC_SampleTime: The sample time value to be set for the selected channel.
* This parameter can be one of the following values:
* @arg ADC_SampleTime_1_5Cycles: Sample time equal to 1.5 cycles
* @arg ADC_SampleTime_7_5Cycles: Sample time equal to 7.5 cycles
* @arg ADC_SampleTime_13_5Cycles: Sample time equal to 13.5 cycles
* @arg ADC_SampleTime_28_5Cycles: Sample time equal to 28.5 cycles
* @arg ADC_SampleTime_41_5Cycles: Sample time equal to 41.5 cycles
* @arg ADC_SampleTime_55_5Cycles: Sample time equal to 55.5 cycles
* @arg ADC_SampleTime_71_5Cycles: Sample time equal to 71.5 cycles
* @arg ADC_SampleTime_239_5Cycles: Sample time equal to 239.5 cycles
* @retval None
*/
void ADC_ChannelConfig(ADC_TypeDef* ADCx, uint32_t ADC_Channel, uint32_t ADC_SampleTime)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
/* Configure the ADC Channel */
// ADCx->CHSELR |= (uint32_t)ADC_Channel; PbP bug fix. The STM code logic ORs the Channel. This will not clear any previous set channels
ADCx->CHSELR = (uint32_t)ADC_Channel; // Our fix will clear previous set channels
/* Clear the Sampling time Selection bits */
tmpreg &= ~ADC_SMPR1_SMPR;
/* Set the ADC Sampling Time register */
tmpreg |= (uint32_t)ADC_SampleTime;
/* Configure the ADC Sample time register */
ADCx->SMPR = tmpreg ;
}
/// \classmethod \constructor(pin)
/// Create an ADC object associated with the given pin.
/// This allows you to then read analog values on that pin.
STATIC mp_obj_t adc_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
// check number of arguments
mp_arg_check_num(n_args, n_kw, 1, 1, false);
// 1st argument is the pin name
mp_obj_t pin_obj = args[0];
uint32_t channel;
if (MP_OBJ_IS_INT(pin_obj)) {
channel = mp_obj_get_int(pin_obj);
} else {
const pin_obj_t *pin = pin_find(pin_obj);
if ((pin->adc_num & PIN_ADC1) == 0) {
// No ADC1 function on that pin
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "pin %s does not have ADC capabilities", qstr_str(pin->name)));
}
channel = pin->adc_channel;
}
if (!IS_ADC_CHANNEL(channel)) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "not a valid ADC Channel: %d", channel));
}
if (pin_adc1[channel] == NULL) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "channel %d not available on this board", channel));
}
pyb_obj_adc_t *o = m_new_obj(pyb_obj_adc_t);
memset(o, 0, sizeof(*o));
o->base.type = &pyb_adc_type;
o->pin_name = pin_obj;
o->channel = channel;
adc_init_single(o);
return o;
}
/*******************************************************************************
* 函数名称: ADC_RegularChannelConfig
* 功能描述: 为选中的ADC常规组信道配置相关的音序器（sequencer）等级和采样时间。
* 输入参数: (1)ADCx:其中x可以是1、2或3，用来选择ADC外围模块.
* (2)ADC_Channel:需要配置的ADC信道
* ADC_Channel 可能的取值：
* - ADC_Channel_0: ADC信道0被选择
* - ADC_Channel_1: ADC信道1被选择
* - ADC_Channel_2: ADC信道2被选择
* - ADC_Channel_3: ADC信道3被选择
* - ADC_Channel_4: ADC信道4被选择
* - ADC_Channel_5: ADC信道5被选择
* - ADC_Channel_6: ADC信道6被选择
* - ADC_Channel_7: ADC信道7被选择
* - ADC_Channel_8: ADC信道8被选择
* - ADC_Channel_9: ADC信道9被选择
* - ADC_Channel_10: ADC信道10被选择
* - ADC_Channel_11: ADC信道11被选择
* - ADC_Channel_12: ADC信道12被选择
* - ADC_Channel_13: ADC信道13被选择
* - ADC_Channel_14: ADC信道14被选择
* - ADC_Channel_15: ADC信道15被选择
* - ADC_Channel_16: ADC信道16被选择
* - ADC_Channel_17: ADC信道17被选择
* (3)Rank:常规组音序器（sequencer）的等级。参数范围是1－16。
* (4)ADC_SampleTime:将要为所选的信道设置的采样时间
* ADC_SampleTime.取值:
* - ADC_SampleTime_1Cycles5: 采样时间等于1.5个周期
* - ADC_SampleTime_7Cycles5: 采样时间等于7.5个周期
* - ADC_SampleTime_13Cycles5: 采样时间等于13.5个周期
* - ADC_SampleTime_28Cycles5: 采样时间等于28.5个周期
* - ADC_SampleTime_41Cycles5: 采样时间等于41.5个周期
* - ADC_SampleTime_55Cycles5: 采样时间等于55.5个周期
* - ADC_SampleTime_71Cycles5: 采样时间等于71.5个周期
* - ADC_SampleTime_239Cycles5: 采样时间等于239.5个周期
* 输出参数: 无
* 返回参数: 无
*******************************************************************************/
void ADC_RegularChannelConfig(ADC_TypeDef* ADCx, u8 ADC_Channel, u8 Rank, u8 ADC_SampleTime)
{
u32 tmpreg1 = 0, tmpreg2 = 0;
/* Check the parameters [检查参数] */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_REGULAR_RANK(Rank));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
/* if ADC_Channel_10 ... ADC_Channel_17 is selected [如果ADC_Channel_10 ... ADC_Channel_17被选择]*/
if (ADC_Channel > ADC_Channel_9)
{
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->SMPR1;
/* Calculate the mask to clear [计算需要清除的标志]*/
tmpreg2 = SMPR1_SMP_Set << (3 * (ADC_Channel - 10));
/* Clear the old discontinuous mode channel count [清除过去的不间断模式通道计数器]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set [计算需要置位的标志]*/
tmpreg2 = (u32)ADC_SampleTime << (3 * (ADC_Channel - 10));
/* Set the discontinuous mode channel count [设置不间断模式通道计数器]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->SMPR1 = tmpreg1;
}
else /* ADC_Channel include in ADC_Channel_[0..9] [ADC_Channel 在 ADC_Channel_[0..9]之间]*/
{
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->SMPR2;
/* Calculate the mask to clear [计算需要清除的标志]*/
tmpreg2 = SMPR2_SMP_Set << (3 * ADC_Channel);
/* Clear the old discontinuous mode channel count [清除过去的不间断模式通道计数器]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set [计算需要置位的标志]*/
tmpreg2 = (u32)ADC_SampleTime << (3 * ADC_Channel);
/* Set the discontinuous mode channel count [设置不间断模式通道计数器]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->SMPR2 = tmpreg1;
}
/* For Rank 1 to 6 [序列在1到6之间]*/
if (Rank < 7)
{
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->SQR3;
/* Calculate the mask to clear [计算需要清除的标志]*/
tmpreg2 = SQR3_SQ_Set << (5 * (Rank - 1));
/* Clear the old SQx bits for the selected rank [根据选择的序列清除旧的SQx位]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set [计算需要置位的标志]*/
tmpreg2 = (u32)ADC_Channel << (5 * (Rank - 1));
/* Set the SQx bits for the selected rank [根据选择的序列置位新的SQx位]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->SQR3 = tmpreg1;
}
/* For Rank 7 to 12 [序列在7到12之间]*/
else if (Rank < 13)
{
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->SQR2;
/* Calculate the mask to clear [计算需要清除的标志]*/
tmpreg2 = SQR2_SQ_Set << (5 * (Rank - 7));
/* Clear the old SQx bits for the selected rank [根据选择的序列清除旧的SQx位]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set [计算需要置位的标志]*/
tmpreg2 = (u32)ADC_Channel << (5 * (Rank - 7));
/* Set the SQx bits for the selected rank [根据选择的序列置位新的SQx位]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->SQR2 = tmpreg1;
}
/* For Rank 13 to 16 [序列在13到16之间]*/
else
{
/* Get the old register value [取得旧的寄存器值]*/
tmpreg1 = ADCx->SQR1;
/* Calculate the mask to clear [计算需要清除的标志]*/
tmpreg2 = SQR1_SQ_Set << (5 * (Rank - 13));
/* Clear the old SQx bits for the selected rank [根据选择的序列清除旧的SQx位]*/
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set [计算需要置位的标志]*/
tmpreg2 = (u32)ADC_Channel << (5 * (Rank - 13));
/* Set the SQx bits for the selected rank [根据选择的序列置位新的SQx位]*/
tmpreg1 |= tmpreg2;
/* Store the new register value [存储新的寄存器值]*/
ADCx->SQR1 = tmpreg1;
}
}
void ADC_RegularChannelConfig(ADC_TypeDef* ADCx, uint8_t ADC_Channel, uint8_t Rank, uint8_t ADC_SampleTime)
{
uint32_t tmpreg1 = 0, tmpreg2 = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_REGULAR_RANK(Rank));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
/* if ADC_Channel_10 ... ADC_Channel_18 is selected */
if (ADC_Channel > ADC_Channel_9)
{
/* Get the old register value */
tmpreg1 = ADCx->SMPR1;
/* Calculate the mask to clear */
tmpreg2 = SMPR1_SMP_SET << (3 * (ADC_Channel - 10));
/* Clear the old sample time */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = (uint32_t)ADC_SampleTime << (3 * (ADC_Channel - 10));
/* Set the new sample time */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SMPR1 = tmpreg1;
}
else /* ADC_Channel include in ADC_Channel_[0..9] */
{
/* Get the old register value */
tmpreg1 = ADCx->SMPR2;
/* Calculate the mask to clear */
tmpreg2 = SMPR2_SMP_SET << (3 * ADC_Channel);
/* Clear the old sample time */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = (uint32_t)ADC_SampleTime << (3 * ADC_Channel);
/* Set the new sample time */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SMPR2 = tmpreg1;
}
/* For Rank 1 to 6 */
if (Rank < 7)
{
/* Get the old register value */
tmpreg1 = ADCx->SQR3;
/* Calculate the mask to clear */
tmpreg2 = SQR3_SQ_SET << (5 * (Rank - 1));
/* Clear the old SQx bits for the selected rank */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = (uint32_t)ADC_Channel << (5 * (Rank - 1));
/* Set the SQx bits for the selected rank */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SQR3 = tmpreg1;
}
/* For Rank 7 to 12 */
else if (Rank < 13)
{
/* Get the old register value */
tmpreg1 = ADCx->SQR2;
/* Calculate the mask to clear */
tmpreg2 = SQR2_SQ_SET << (5 * (Rank - 7));
/* Clear the old SQx bits for the selected rank */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = (uint32_t)ADC_Channel << (5 * (Rank - 7));
/* Set the SQx bits for the selected rank */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SQR2 = tmpreg1;
}
/* For Rank 13 to 16 */
else
{
/* Get the old register value */
tmpreg1 = ADCx->SQR1;
/* Calculate the mask to clear */
tmpreg2 = SQR1_SQ_SET << (5 * (Rank - 13));
/* Clear the old SQx bits for the selected rank */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = (uint32_t)ADC_Channel << (5 * (Rank - 13));
/* Set the SQx bits for the selected rank */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SQR1 = tmpreg1;
}
}
/**
* @brief Configures the ADC injected group and the selected channel to be
* linked to the injected group.
* @note Possibility to update parameters on the fly:
* This function initializes injected group, following calls to this
* function can be used to reconfigure some parameters of structure
* "ADC_InjectionConfTypeDef" on the fly, without reseting the ADC.
* The setting of these parameters is conditioned to ADC state:
* this function must be called when ADC is not under conversion.
* @param hadc: ADC handle
* @param sConfigInjected: Structure of ADC injected group and ADC channel for
* injected group.
* @retval None
*/
HAL_StatusTypeDef HAL_ADCEx_InjectedConfigChannel(ADC_HandleTypeDef* hadc, ADC_InjectionConfTypeDef* sConfigInjected)
{
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
__IO uint32_t wait_loop_index = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
assert_param(IS_ADC_CHANNEL(sConfigInjected->InjectedChannel));
assert_param(IS_ADC_SAMPLE_TIME(sConfigInjected->InjectedSamplingTime));
assert_param(IS_FUNCTIONAL_STATE(sConfigInjected->AutoInjectedConv));
assert_param(IS_ADC_EXTTRIGINJEC(sConfigInjected->ExternalTrigInjecConv));
assert_param(IS_ADC_RANGE(sConfigInjected->InjectedOffset));
if(hadc->Init.ScanConvMode != ADC_SCAN_DISABLE)
{
assert_param(IS_ADC_INJECTED_RANK(sConfigInjected->InjectedRank));
assert_param(IS_ADC_INJECTED_NB_CONV(sConfigInjected->InjectedNbrOfConversion));
assert_param(IS_FUNCTIONAL_STATE(sConfigInjected->InjectedDiscontinuousConvMode));
}
/* Process locked */
__HAL_LOCK(hadc);
/* Configuration of injected group sequencer: */
/* - if scan mode is disabled, injected channels sequence length is set to */
/* 0x00: 1 channel converted (channel on regular rank 1) */
/* Parameter "InjectedNbrOfConversion" is discarded. */
/* Note: Scan mode is present by hardware on this device and, if */
/* disabled, discards automatically nb of conversions. Anyway, nb of */
/* conversions is forced to 0x00 for alignment over all STM32 devices. */
/* - if scan mode is enabled, injected channels sequence length is set to */
/* parameter "InjectedNbrOfConversion". */
if (hadc->Init.ScanConvMode == ADC_SCAN_DISABLE)
{
if (sConfigInjected->InjectedRank == ADC_INJECTED_RANK_1)
{
/* Clear the old SQx bits for all injected ranks */
MODIFY_REG(hadc->Instance->JSQR ,
ADC_JSQR_JL |
ADC_JSQR_JSQ4 |
ADC_JSQR_JSQ3 |
ADC_JSQR_JSQ2 |
ADC_JSQR_JSQ1 ,
ADC_JSQR_RK_JL(sConfigInjected->InjectedChannel,
ADC_INJECTED_RANK_1,
0x01) );
}
/* If another injected rank than rank1 was intended to be set, and could */
/* not due to ScanConvMode disabled, error is reported. */
else
{
/* Update ADC state machine to error */
hadc->State = HAL_ADC_STATE_ERROR;
tmp_hal_status = HAL_ERROR;
}
}
else
{
/* Since injected channels rank conv. order depends on total number of */
/* injected conversions, selected rank must be below or equal to total */
/* number of injected conversions to be updated. */
if (sConfigInjected->InjectedRank <= sConfigInjected->InjectedNbrOfConversion)
{
/* Clear the old SQx bits for the selected rank */
/* Set the SQx bits for the selected rank */
MODIFY_REG(hadc->Instance->JSQR ,
ADC_JSQR_JL |
ADC_JSQR_RK_JL(ADC_JSQR_JSQ1,
sConfigInjected->InjectedRank,
sConfigInjected->InjectedNbrOfConversion) ,
ADC_JSQR_JL_SHIFT(sConfigInjected->InjectedNbrOfConversion) |
ADC_JSQR_RK_JL(sConfigInjected->InjectedChannel,
sConfigInjected->InjectedRank,
sConfigInjected->InjectedNbrOfConversion) );
}
else
{
/* Clear the old SQx bits for the selected rank */
MODIFY_REG(hadc->Instance->JSQR ,
ADC_JSQR_JL |
ADC_JSQR_RK_JL(ADC_JSQR_JSQ1,
sConfigInjected->InjectedRank,
sConfigInjected->InjectedNbrOfConversion) ,
0x00000000 );
}
}
/* Configuration of injected group */
/* Parameters update conditioned to ADC state: */
/* Parameters that can be updated only when ADC is disabled: */
/* - external trigger to start conversion */
/* Parameters update not conditioned to ADC state: */
/* - Automatic injected conversion */
/* - Injected discontinuous mode */
/* Note: In case of ADC already enabled, caution to not launch an unwanted */
/* conversion while modifying register CR2 by writing 1 to bit ADON. */
if (ADC_IS_ENABLE(hadc) == RESET)
{
MODIFY_REG(hadc->Instance->CR2 ,
ADC_CR2_JEXTSEL |
ADC_CR2_ADON ,
ADC_CFGR_JEXTSEL(hadc, sConfigInjected->ExternalTrigInjecConv) );
}
/* Configuration of injected group */
/* - Automatic injected conversion */
/* - Injected discontinuous mode */
/* Automatic injected conversion can be enabled if injected group */
/* external triggers are disabled. */
if (sConfigInjected->AutoInjectedConv == ENABLE)
{
if (sConfigInjected->ExternalTrigInjecConv == ADC_INJECTED_SOFTWARE_START)
{
SET_BIT(hadc->Instance->CR1, ADC_CR1_JAUTO);
}
else
{
/* Update ADC state machine to error */
hadc->State = HAL_ADC_STATE_ERROR;
tmp_hal_status = HAL_ERROR;
}
}
/* Injected discontinuous can be enabled only if auto-injected mode is */
/* disabled. */
if (sConfigInjected->InjectedDiscontinuousConvMode == ENABLE)
{
if (sConfigInjected->AutoInjectedConv == DISABLE)
{
SET_BIT(hadc->Instance->CR1, ADC_CR1_JDISCEN);
}
else
{
/* Update ADC state machine to error */
hadc->State = HAL_ADC_STATE_ERROR;
tmp_hal_status = HAL_ERROR;
}
}
/* InjectedChannel sampling time configuration */
/* For channels 10 to 17 */
if (sConfigInjected->InjectedChannel >= ADC_CHANNEL_10)
{
MODIFY_REG(hadc->Instance->SMPR1 ,
ADC_SMPR1(ADC_SMPR1_SMP10, sConfigInjected->InjectedChannel) ,
ADC_SMPR1(sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel) );
}
else /* For channels 0 to 9 */
{
MODIFY_REG(hadc->Instance->SMPR2 ,
ADC_SMPR2(ADC_SMPR2_SMP0, sConfigInjected->InjectedChannel) ,
ADC_SMPR2(sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel) );
}
/* If ADC1 InjectedChannel_16 or InjectedChannel_17 is selected, enable Temperature sensor */
/* and VREFINT measurement path. */
if ((sConfigInjected->InjectedChannel == ADC_CHANNEL_TEMPSENSOR) ||
(sConfigInjected->InjectedChannel == ADC_CHANNEL_VREFINT) )
{
SET_BIT(hadc->Instance->CR2, ADC_CR2_TSVREFE);
}
/* Configure the offset: offset enable/disable, InjectedChannel, offset value */
switch(sConfigInjected->InjectedRank)
{
case 1:
/* Set injected channel 1 offset */
MODIFY_REG(hadc->Instance->JOFR1,
ADC_JOFR1_JOFFSET1,
sConfigInjected->InjectedOffset);
break;
case 2:
/* Set injected channel 2 offset */
MODIFY_REG(hadc->Instance->JOFR2,
ADC_JOFR2_JOFFSET2,
sConfigInjected->InjectedOffset);
break;
case 3:
/* Set injected channel 3 offset */
MODIFY_REG(hadc->Instance->JOFR3,
ADC_JOFR3_JOFFSET3,
sConfigInjected->InjectedOffset);
break;
case 4:
default:
MODIFY_REG(hadc->Instance->JOFR4,
ADC_JOFR4_JOFFSET4,
sConfigInjected->InjectedOffset);
break;
}
/* If ADC1 Channel_16 or Channel_17 is selected, enable Temperature sensor */
/* and VREFINT measurement path. */
if ((sConfigInjected->InjectedChannel == ADC_CHANNEL_TEMPSENSOR) ||
(sConfigInjected->InjectedChannel == ADC_CHANNEL_VREFINT) )
{
/* For STM32F1 devices with several ADC: Only ADC1 can access internal */
/* measurement channels (VrefInt/TempSensor). If these channels are */
/* intended to be set on other ADC instances, an error is reported. */
if (hadc->Instance == ADC1)
{
if (READ_BIT(hadc->Instance->CR2, ADC_CR2_TSVREFE) == RESET)
{
SET_BIT(hadc->Instance->CR2, ADC_CR2_TSVREFE);
if ((sConfigInjected->InjectedChannel == ADC_CHANNEL_TEMPSENSOR))
{
/* Delay for temperature sensor stabilization time */
/* Compute number of CPU cycles to wait for */
wait_loop_index = (ADC_TEMPSENSOR_DELAY_US * (SystemCoreClock / 1000000));
while(wait_loop_index != 0)
{
wait_loop_index--;
}
}
}
}
else
{
/* Update ADC state machine to error */
hadc->State = HAL_ADC_STATE_ERROR;
tmp_hal_status = HAL_ERROR;
}
}
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Return function status */
return tmp_hal_status;
}
/**
* @brief Configures the ADC injected group and the selected channel to be
* linked to the injected group.
* @note Possibility to update parameters on the fly:
* This function initializes injected group, following calls to this
* function can be used to reconfigure some parameters of structure
* "ADC_InjectionConfTypeDef" on the fly, without reseting the ADC.
* The setting of these parameters is conditioned to ADC state:
* this function must be called when ADC is not under conversion.
* @param hadc: ADC handle
* @param sConfigInjected: Structure of ADC injected group and ADC channel for
* injected group.
* @retval None
*/
HAL_StatusTypeDef HAL_ADCEx_InjectedConfigChannel(ADC_HandleTypeDef* hadc, ADC_InjectionConfTypeDef* sConfigInjected)
{
HAL_StatusTypeDef tmpHALStatus = HAL_OK;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
assert_param(IS_ADC_CHANNEL(sConfigInjected->InjectedChannel));
assert_param(IS_ADC_SAMPLE_TIME(sConfigInjected->InjectedSamplingTime));
assert_param(IS_FUNCTIONAL_STATE(sConfigInjected->AutoInjectedConv));
assert_param(IS_ADC_EXTTRIGINJEC(sConfigInjected->ExternalTrigInjecConv));
assert_param(IS_ADC_RANGE(sConfigInjected->InjectedOffset));
if(hadc->Init.ScanConvMode != ADC_SCAN_DISABLE)
{
assert_param(IS_ADC_INJECTED_RANK(sConfigInjected->InjectedRank));
assert_param(IS_ADC_INJECTED_NB_CONV(sConfigInjected->InjectedNbrOfConversion));
assert_param(IS_FUNCTIONAL_STATE(sConfigInjected->InjectedDiscontinuousConvMode));
}
if(sConfigInjected->ExternalTrigInjecConvEdge != ADC_INJECTED_SOFTWARE_START)
{
assert_param(IS_ADC_EXTTRIGINJEC_EDGE(sConfigInjected->ExternalTrigInjecConvEdge));
}
/* Process locked */
__HAL_LOCK(hadc);
/* Configuration of injected group sequencer: */
/* - if scan mode is disabled, injected channels sequence length is set to */
/* 0x00: 1 channel converted (channel on regular rank 1) */
/* Parameter "InjectedNbrOfConversion" is discarded. */
/* Note: Scan mode is present by hardware on this device and, if */
/* disabled, discards automatically nb of conversions. Anyway, nb of */
/* conversions is forced to 0x00 for alignment over all STM32 devices. */
/* - if scan mode is enabled, injected channels sequence length is set to */
/* parameter ""InjectedNbrOfConversion". */
if (hadc->Init.ScanConvMode == ADC_SCAN_DISABLE)
{
if (sConfigInjected->InjectedRank == ADC_INJECTED_RANK_1)
{
/* Clear the old SQx bits for all injected ranks */
MODIFY_REG(hadc->Instance->JSQR ,
ADC_JSQR_JL |
ADC_JSQR_JSQ4 |
ADC_JSQR_JSQ3 |
ADC_JSQR_JSQ2 |
ADC_JSQR_JSQ1 ,
__ADC_JSQR_RK(sConfigInjected->InjectedChannel,
ADC_INJECTED_RANK_1,
0x01) );
}
/* If another injected rank than rank1 was intended to be set, and could */
/* not due to ScanConvMode disabled, error is reported. */
else
{
/* Update ADC state machine to error */
hadc->State = HAL_ADC_STATE_ERROR;
tmpHALStatus = HAL_ERROR;
}
}
else
{
/* Since injected channels rank conv. order depends on total number of */
/* injected conversions, selected rank must be below or equal to total */
/* number of injected conversions to be updated. */
if (sConfigInjected->InjectedRank <= sConfigInjected->InjectedNbrOfConversion)
{
/* Clear the old SQx bits for the selected rank */
/* Set the SQx bits for the selected rank */
MODIFY_REG(hadc->Instance->JSQR ,
ADC_JSQR_JL |
__ADC_JSQR_RK(ADC_JSQR_JSQ1,
sConfigInjected->InjectedRank,
sConfigInjected->InjectedNbrOfConversion) ,
__ADC_JSQR_JL(sConfigInjected->InjectedNbrOfConversion) |
__ADC_JSQR_RK(sConfigInjected->InjectedChannel,
sConfigInjected->InjectedRank,
sConfigInjected->InjectedNbrOfConversion) );
}
else
{
/* Clear the old SQx bits for the selected rank */
MODIFY_REG(hadc->Instance->JSQR ,
ADC_JSQR_JL |
__ADC_JSQR_RK(ADC_JSQR_JSQ1,
sConfigInjected->InjectedRank,
sConfigInjected->InjectedNbrOfConversion) ,
0x00000000 );
}
}
/* Enable external trigger if trigger selection is different of software */
/* start. */
/* Note: This configuration keeps the hardware feature of parameter */
/* ExternalTrigConvEdge "trigger edge none" equivalent to */
/* software start. */
if (sConfigInjected->ExternalTrigInjecConv != ADC_INJECTED_SOFTWARE_START)
{
MODIFY_REG(hadc->Instance->CR2 ,
ADC_CR2_JEXTEN |
ADC_CR2_JEXTSEL ,
sConfigInjected->ExternalTrigInjecConv |
sConfigInjected->ExternalTrigInjecConvEdge );
}
else
{
MODIFY_REG(hadc->Instance->CR2,
ADC_CR2_JEXTEN |
ADC_CR2_JEXTSEL ,
0x00000000 );
}
/* Configuration of injected group */
/* Parameters update conditioned to ADC state: */
/* Parameters that can be updated only when ADC is disabled: */
/* - Automatic injected conversion */
/* - Injected discontinuous mode */
if ((__HAL_ADC_IS_ENABLED(hadc) == RESET))
{
hadc->Instance->CR1 &= ~(ADC_CR1_JAUTO |
ADC_CR1_JDISCEN );
/* Automatic injected conversion can be enabled if injected group */
/* external triggers are disabled. */
if (sConfigInjected->AutoInjectedConv == ENABLE)
{
if (sConfigInjected->ExternalTrigInjecConv == ADC_INJECTED_SOFTWARE_START)
{
SET_BIT(hadc->Instance->CR1, ADC_CR1_JAUTO);
}
else
{
/* Update ADC state machine to error */
hadc->State = HAL_ADC_STATE_ERROR;
tmpHALStatus = HAL_ERROR;
}
}
/* Injected discontinuous can be enabled only if auto-injected mode is */
/* disabled. */
if (sConfigInjected->InjectedDiscontinuousConvMode == ENABLE)
{
if (sConfigInjected->AutoInjectedConv == DISABLE)
{
SET_BIT(hadc->Instance->CR1, ADC_CR1_JDISCEN);
}
else
{
/* Update ADC state machine to error */
hadc->State = HAL_ADC_STATE_ERROR;
tmpHALStatus = HAL_ERROR;
}
}
}
/* InjectedChannel sampling time configuration */
/* For InjectedChannels 0 to 9 */
if (sConfigInjected->InjectedChannel < ADC_CHANNEL_10)
{
MODIFY_REG(hadc->Instance->SMPR3,
__ADC_SMPR3(ADC_SMPR3_SMP0, sConfigInjected->InjectedChannel),
__ADC_SMPR3(sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel) );
}
/* For InjectedChannels 10 to 19 */
else if (sConfigInjected->InjectedChannel < ADC_CHANNEL_20)
{
MODIFY_REG(hadc->Instance->SMPR2,
__ADC_SMPR2(ADC_SMPR2_SMP10, sConfigInjected->InjectedChannel),
__ADC_SMPR2(sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel) );
}
/* For InjectedChannels 20 to 26 for devices Cat.1, Cat.2, Cat.3 */
/* For InjectedChannels 20 to 29 for devices Cat4, Cat.5 */
else if (sConfigInjected->InjectedChannel <= ADC_SMPR1_CHANNEL_MAX)
{
MODIFY_REG(hadc->Instance->SMPR1,
__ADC_SMPR1(ADC_SMPR1_SMP20, sConfigInjected->InjectedChannel),
__ADC_SMPR1(sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel) );
}
/* For InjectedChannels 30 to 31 for devices Cat4, Cat.5 */
else
{
__ADC_SMPR0_CHANNEL_SET(hadc, sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel);
}
/* Configure the offset: offset enable/disable, InjectedChannel, offset value */
switch(sConfigInjected->InjectedRank)
{
case 1:
/* Set injected channel 1 offset */
MODIFY_REG(hadc->Instance->JOFR1,
ADC_JOFR1_JOFFSET1,
sConfigInjected->InjectedOffset);
break;
case 2:
/* Set injected channel 2 offset */
MODIFY_REG(hadc->Instance->JOFR2,
ADC_JOFR2_JOFFSET2,
sConfigInjected->InjectedOffset);
break;
case 3:
/* Set injected channel 3 offset */
MODIFY_REG(hadc->Instance->JOFR3,
ADC_JOFR3_JOFFSET3,
sConfigInjected->InjectedOffset);
break;
case 4:
default:
MODIFY_REG(hadc->Instance->JOFR4,
ADC_JOFR4_JOFFSET4,
sConfigInjected->InjectedOffset);
break;
}
/* If ADC1 Channel_16 or Channel_17 is selected, enable Temperature sensor */
/* and VREFINT measurement path. */
if ((sConfigInjected->InjectedChannel == ADC_CHANNEL_TEMPSENSOR) ||
(sConfigInjected->InjectedChannel == ADC_CHANNEL_VREFINT) )
{
SET_BIT(ADC->CCR, ADC_CCR_TSVREFE);
}
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Return function status */
return tmpHALStatus;
}
/**
* @brief Configures for the selected ADC injected channel its corresponding
* rank in the sequencer and its sample time.
* @param hadc: pointer to a ADC_HandleTypeDef structure that contains
* the configuration information for the specified ADC.
* @param sConfigInjected: ADC configuration structure for injected channel.
* @retval None
*/
HAL_StatusTypeDef HAL_ADCEx_InjectedConfigChannel(ADC_HandleTypeDef* hadc, ADC_InjectionConfTypeDef* sConfigInjected)
{
#ifdef USE_FULL_ASSERT
uint32_t tmp = 0;
#endif /* USE_FULL_ASSERT */
/* Check the parameters */
assert_param(IS_ADC_CHANNEL(sConfigInjected->InjectedChannel));
assert_param(IS_ADC_INJECTED_RANK(sConfigInjected->InjectedRank));
assert_param(IS_ADC_SAMPLE_TIME(sConfigInjected->InjectedSamplingTime));
assert_param(IS_ADC_EXT_INJEC_TRIG(sConfigInjected->ExternalTrigInjecConv));
assert_param(IS_ADC_INJECTED_LENGTH(sConfigInjected->InjectedNbrOfConversion));
assert_param(IS_FUNCTIONAL_STATE(sConfigInjected->AutoInjectedConv));
assert_param(IS_FUNCTIONAL_STATE(sConfigInjected->InjectedDiscontinuousConvMode));
#ifdef USE_FULL_ASSERT
tmp = ADC_GET_RESOLUTION(hadc);
assert_param(IS_ADC_RANGE(tmp, sConfigInjected->InjectedOffset));
#endif /* USE_FULL_ASSERT */
if(sConfigInjected->ExternalTrigInjecConvEdge != ADC_INJECTED_SOFTWARE_START)
{
assert_param(IS_ADC_EXT_INJEC_TRIG_EDGE(sConfigInjected->ExternalTrigInjecConvEdge));
}
/* Process locked */
__HAL_LOCK(hadc);
/* if ADC_Channel_10 ... ADC_Channel_18 is selected */
if (sConfigInjected->InjectedChannel > ADC_CHANNEL_9)
{
/* Clear the old sample time */
hadc->Instance->SMPR1 &= ~ADC_SMPR1(ADC_SMPR1_SMP10, sConfigInjected->InjectedChannel);
/* Set the new sample time */
hadc->Instance->SMPR1 |= ADC_SMPR1(sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel);
}
else /* ADC_Channel include in ADC_Channel_[0..9] */
{
/* Clear the old sample time */
hadc->Instance->SMPR2 &= ~ADC_SMPR2(ADC_SMPR2_SMP0, sConfigInjected->InjectedChannel);
/* Set the new sample time */
hadc->Instance->SMPR2 |= ADC_SMPR2(sConfigInjected->InjectedSamplingTime, sConfigInjected->InjectedChannel);
}
/*---------------------------- ADCx JSQR Configuration -----------------*/
hadc->Instance->JSQR &= ~(ADC_JSQR_JL);
hadc->Instance->JSQR |= ADC_SQR1(sConfigInjected->InjectedNbrOfConversion);
/* Rank configuration */
/* Clear the old SQx bits for the selected rank */
hadc->Instance->JSQR &= ~ADC_JSQR(ADC_JSQR_JSQ1, sConfigInjected->InjectedRank,sConfigInjected->InjectedNbrOfConversion);
/* Set the SQx bits for the selected rank */
hadc->Instance->JSQR |= ADC_JSQR(sConfigInjected->InjectedChannel, sConfigInjected->InjectedRank,sConfigInjected->InjectedNbrOfConversion);
/* Enable external trigger if trigger selection is different of software */
/* start. */
/* Note: This configuration keeps the hardware feature of parameter */
/* ExternalTrigConvEdge "trigger edge none" equivalent to */
/* software start. */
if(sConfigInjected->ExternalTrigInjecConv != ADC_INJECTED_SOFTWARE_START)
{
/* Select external trigger to start conversion */
hadc->Instance->CR2 &= ~(ADC_CR2_JEXTSEL);
hadc->Instance->CR2 |= sConfigInjected->ExternalTrigInjecConv;
/* Select external trigger polarity */
hadc->Instance->CR2 &= ~(ADC_CR2_JEXTEN);
hadc->Instance->CR2 |= sConfigInjected->ExternalTrigInjecConvEdge;
}
else
{
/* Reset the external trigger */
hadc->Instance->CR2 &= ~(ADC_CR2_JEXTSEL);
hadc->Instance->CR2 &= ~(ADC_CR2_JEXTEN);
}
if (sConfigInjected->AutoInjectedConv != DISABLE)
{
/* Enable the selected ADC automatic injected group conversion */
hadc->Instance->CR1 |= ADC_CR1_JAUTO;
}
else
{
/* Disable the selected ADC automatic injected group conversion */
hadc->Instance->CR1 &= ~(ADC_CR1_JAUTO);
}
if (sConfigInjected->InjectedDiscontinuousConvMode != DISABLE)
{
/* Enable the selected ADC injected discontinuous mode */
hadc->Instance->CR1 |= ADC_CR1_JDISCEN;
}
else
{
/* Disable the selected ADC injected discontinuous mode */
hadc->Instance->CR1 &= ~(ADC_CR1_JDISCEN);
}
switch(sConfigInjected->InjectedRank)
{
case 1:
/* Set injected channel 1 offset */
hadc->Instance->JOFR1 &= ~(ADC_JOFR1_JOFFSET1);
hadc->Instance->JOFR1 |= sConfigInjected->InjectedOffset;
break;
case 2:
/* Set injected channel 2 offset */
hadc->Instance->JOFR2 &= ~(ADC_JOFR2_JOFFSET2);
hadc->Instance->JOFR2 |= sConfigInjected->InjectedOffset;
break;
case 3:
/* Set injected channel 3 offset */
hadc->Instance->JOFR3 &= ~(ADC_JOFR3_JOFFSET3);
hadc->Instance->JOFR3 |= sConfigInjected->InjectedOffset;
break;
default:
/* Set injected channel 4 offset */
hadc->Instance->JOFR4 &= ~(ADC_JOFR4_JOFFSET4);
hadc->Instance->JOFR4 |= sConfigInjected->InjectedOffset;
break;
}
/* if ADC1 Channel_18 is selected enable VBAT Channel */
if ((hadc->Instance == ADC1) && (sConfigInjected->InjectedChannel == ADC_CHANNEL_VBAT))
{
/* Enable the VBAT channel*/
ADC->CCR |= ADC_CCR_VBATE;
}
/* if ADC1 Channel_16 or Channel_17 is selected enable TSVREFE Channel(Temperature sensor and VREFINT) */
if ((hadc->Instance == ADC1) && ((sConfigInjected->InjectedChannel == ADC_CHANNEL_TEMPSENSOR) || (sConfigInjected->InjectedChannel == ADC_CHANNEL_VREFINT)))
{
/* Enable the TSVREFE channel*/
ADC->CCR |= ADC_CCR_TSVREFE;
}
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Configures for the selected ADC regular channel its corresponding
* rank in the sequencer and its sample time.
* @param hadc: pointer to a ADC_HandleTypeDef structure that contains
* the configuration information for the specified ADC.
* @param sConfig: ADC configuration structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig)
{
__IO uint32_t counter = 0;
/* Check the parameters */
assert_param(IS_ADC_CHANNEL(sConfig->Channel));
assert_param(IS_ADC_REGULAR_RANK(sConfig->Rank));
assert_param(IS_ADC_SAMPLE_TIME(sConfig->SamplingTime));
/* Process locked */
__HAL_LOCK(hadc);
/* if ADC_Channel_10 ... ADC_Channel_18 is selected */
if (sConfig->Channel > ADC_CHANNEL_9)
{
/* Clear the old sample time */
hadc->Instance->SMPR1 &= ~ADC_SMPR1(ADC_SMPR1_SMP10, sConfig->Channel);
/* Set the new sample time */
hadc->Instance->SMPR1 |= ADC_SMPR1(sConfig->SamplingTime, sConfig->Channel);
}
else /* ADC_Channel include in ADC_Channel_[0..9] */
{
/* Clear the old sample time */
hadc->Instance->SMPR2 &= ~ADC_SMPR2(ADC_SMPR2_SMP0, sConfig->Channel);
/* Set the new sample time */
hadc->Instance->SMPR2 |= ADC_SMPR2(sConfig->SamplingTime, sConfig->Channel);
}
/* For Rank 1 to 6 */
if (sConfig->Rank < 7)
{
/* Clear the old SQx bits for the selected rank */
hadc->Instance->SQR3 &= ~ADC_SQR3_RK(ADC_SQR3_SQ1, sConfig->Rank);
/* Set the SQx bits for the selected rank */
hadc->Instance->SQR3 |= ADC_SQR3_RK(sConfig->Channel, sConfig->Rank);
}
/* For Rank 7 to 12 */
else if (sConfig->Rank < 13)
{
/* Clear the old SQx bits for the selected rank */
hadc->Instance->SQR2 &= ~ADC_SQR2_RK(ADC_SQR2_SQ7, sConfig->Rank);
/* Set the SQx bits for the selected rank */
hadc->Instance->SQR2 |= ADC_SQR2_RK(sConfig->Channel, sConfig->Rank);
}
/* For Rank 13 to 16 */
else
{
/* Clear the old SQx bits for the selected rank */
hadc->Instance->SQR1 &= ~ADC_SQR1_RK(ADC_SQR1_SQ13, sConfig->Rank);
/* Set the SQx bits for the selected rank */
hadc->Instance->SQR1 |= ADC_SQR1_RK(sConfig->Channel, sConfig->Rank);
}
/* if ADC1 Channel_18 is selected enable VBAT Channel */
if ((hadc->Instance == ADC1) && (sConfig->Channel == ADC_CHANNEL_VBAT))
{
/* Enable the VBAT channel*/
ADC->CCR |= ADC_CCR_VBATE;
}
/* if ADC1 Channel_16 or Channel_17 is selected enable TSVREFE Channel(Temperature sensor and VREFINT) */
if ((hadc->Instance == ADC1) && ((sConfig->Channel == ADC_CHANNEL_TEMPSENSOR) || (sConfig->Channel == ADC_CHANNEL_VREFINT)))
{
/* Enable the TSVREFE channel*/
ADC->CCR |= ADC_CCR_TSVREFE;
if((sConfig->Channel == ADC_CHANNEL_TEMPSENSOR))
{
/* Delay for temperature sensor stabilization time */
/* Compute number of CPU cycles to wait for */
counter = (ADC_TEMPSENSOR_DELAY_US * (SystemCoreClock / 1000000));
while(counter != 0)
{
counter--;
}
}
}
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Return function status */
return HAL_OK;
}
/**
* @brief This function will set the ADC to the required value
* @param pin : the pin to use
* @retval the value of the adc
*/
uint16_t adc_read_value(PinName pin)
{
ADC_HandleTypeDef AdcHandle = {};
ADC_ChannelConfTypeDef AdcChannelConf = {};
__IO uint16_t uhADCxConvertedValue = 0;
AdcHandle.Instance = pinmap_peripheral(pin, PinMap_ADC);
if (AdcHandle.Instance == NP) return 0;
#ifndef STM32F1xx
AdcHandle.Init.ClockPrescaler = ADC_CLOCK_DIV; /* Asynchronous clock mode, input ADC clock divided */
AdcHandle.Init.Resolution = ADC_RESOLUTION_12B; /* 12-bit resolution for converted data */
AdcHandle.Init.EOCSelection = ADC_EOC_SINGLE_CONV; /* EOC flag picked-up to indicate conversion end */
AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; /* Parameter discarded because software trigger chosen */
AdcHandle.Init.DMAContinuousRequests = DISABLE; /* DMA one-shot mode selected (not applied to this example) */
#endif
AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT; /* Right-alignment for converted data */
AdcHandle.Init.ScanConvMode = DISABLE; /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
AdcHandle.Init.ContinuousConvMode = DISABLE; /* Continuous mode disabled to have only 1 conversion at each conversion trig */
AdcHandle.Init.DiscontinuousConvMode = DISABLE; /* Parameter discarded because sequencer is disabled */
AdcHandle.Init.ExternalTrigConv = ADC_SOFTWARE_START; /* Software start to trig the 1st conversion manually, without external event */
AdcHandle.State = HAL_ADC_STATE_RESET;
#if defined (STM32F0xx) || defined (STM32L0xx)
AdcHandle.Init.LowPowerAutoWait = DISABLE; /* Auto-delayed conversion feature disabled */
AdcHandle.Init.LowPowerAutoPowerOff = DISABLE; /* ADC automatically powers-off after a conversion and automatically wakes-up when a new conversion is triggered */
AdcHandle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; /* DR register is overwritten with the last conversion result in case of overrun */
#ifdef STM32F0xx
AdcHandle.Init.SamplingTimeCommon = SAMPLINGTIME;
#else // STM32L0
//LowPowerFrequencyMode to enable if clk freq < 2.8Mhz
AdcHandle.Init.SamplingTime = SAMPLINGTIME;
#endif
#else
#ifdef STM32F3xx
AdcHandle.Init.LowPowerAutoWait = DISABLE; /* Auto-delayed conversion feature disabled */
#endif
AdcHandle.Init.NbrOfConversion = 1; /* Specifies the number of ranks that will be converted within the regular group sequencer. */
AdcHandle.Init.NbrOfDiscConversion = 0; /* Parameter discarded because sequencer is disabled */
#endif
g_current_pin = pin; /* Needed for HAL_ADC_MspInit*/
if (HAL_ADC_Init(&AdcHandle) != HAL_OK) {
return 0;
}
AdcChannelConf.Channel = get_adc_channel(pin); /* Specifies the channel to configure into ADC */
#ifdef STM32L4xx
if (!IS_ADC_CHANNEL(&AdcHandle, AdcChannelConf.Channel)) return 0;
#else
if (!IS_ADC_CHANNEL(AdcChannelConf.Channel)) return 0;
#endif
AdcChannelConf.Rank = ADC_REGULAR_RANK_1; /* Specifies the rank in the regular group sequencer */
#ifndef STM32L0xx
AdcChannelConf.SamplingTime = SAMPLINGTIME; /* Sampling time value to be set for the selected channel */
#endif
#if defined (STM32F3xx) || defined (STM32L4xx)
AdcChannelConf.SingleDiff = ADC_SINGLE_ENDED; /* Single-ended input channel */
AdcChannelConf.OffsetNumber = ADC_OFFSET_NONE; /* No offset subtraction */
AdcChannelConf.Offset = 0; /* Parameter discarded because offset correction is disabled */
#endif
/*##-2- Configure ADC regular channel ######################################*/
if (HAL_ADC_ConfigChannel(&AdcHandle, &AdcChannelConf) != HAL_OK)
{
/* Channel Configuration Error */
return 0;
}
#if defined (STM32F0xx) || defined (STM32F1xx) || defined (STM32F3xx) || defined (STM32L0xx) || defined (STM32L4xx)
/*##-2.1- Calibrate ADC then Start the conversion process ####################*/
#if defined (STM32F0xx) || defined (STM32F1xx)
if (HAL_ADCEx_Calibration_Start(&AdcHandle) != HAL_OK)
#else
if (HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_SINGLE_ENDED) != HAL_OK)
#endif
{
/* ADC Calibration Error */
return 0;
}
#endif
/*##-3- Start the conversion process ####################*/
if (HAL_ADC_Start(&AdcHandle) != HAL_OK)
{
/* Start Conversation Error */
return 0;
}
/*##-4- Wait for the end of conversion #####################################*/
/* For simplicity reasons, this example is just waiting till the end of the
conversion, but application may perform other tasks while conversion
operation is ongoing. */
if (HAL_ADC_PollForConversion(&AdcHandle, 10) != HAL_OK)
{
/* End Of Conversion flag not set on time */
return 0;
}
/* Check if the continous conversion of regular channel is finished */
if ((HAL_ADC_GetState(&AdcHandle) & HAL_ADC_STATE_REG_EOC) == HAL_ADC_STATE_REG_EOC)
{
/*##-5- Get the converted value of regular channel ########################*/
uhADCxConvertedValue = HAL_ADC_GetValue(&AdcHandle);
}
if (HAL_ADC_Stop(&AdcHandle) != HAL_OK)
{
/* Stop Conversation Error */
return 0;
}
if(HAL_ADC_DeInit(&AdcHandle) != HAL_OK) {
return 0;
}
return uhADCxConvertedValue;
}
