📄 stm32f10x_adc.c
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/*******************************************************************************
* Function Name : ADC_ExternalTrigConvCmd
* Description : Enables or disables the ADCx conversion through external trigger.
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* - NewState: new state of the selected ADC external trigger
* start of conversion.
* This parameter can be: ENABLE or DISABLE.
* Output : None
* Return : None
*******************************************************************************/
void ADC_ExternalTrigConvCmd(ADC_TypeDef* ADCx, FunctionalState NewState)
{
if (NewState != DISABLE)
{
/* Enable the selected ADC conversion on external event */
ADCx->CR2 |= CR2_EXTTRIG_Set;
}
else
{
/* Disable the selected ADC conversion on external event */
ADCx->CR2 &= CR2_EXTTRIG_Reset;
}
}
/*******************************************************************************
* Function Name : ADC_GetConversionValue
* Description : Returns the last ADC conversion result data for regular channel.
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* Output : None
* Return : The Data conversion value.
*******************************************************************************/
u16 ADC_GetConversionValue(ADC_TypeDef* ADCx)
{
/* Return the selected ADC conversion value */
return (u16) ADCx->DR;
}
/*******************************************************************************
* Function Name : ADC_GetDualModeConversionValue
* Description : Returns the last ADCs conversion result data in dual mode.
* Output : None
* Return : The Data conversion value.
*******************************************************************************/
u32 ADC_GetDualModeConversionValue(void)
{
/* Return the dual mode conversion value */
return ADC1->DR;
}
/*******************************************************************************
* Function Name : ADC_AutoInjectedConvCmd
* Description : Enables or disables the automatic injected group conversion
* after regular one.
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* - NewState: new state of the selected ADC auto injected
* conversion
* This parameter can be: ENABLE or DISABLE.
* Output : None
* Return : None
*******************************************************************************/
void ADC_AutoInjectedConvCmd(ADC_TypeDef* ADCx, FunctionalState NewState)
{
if (NewState != DISABLE)
{
/* Enable the selected ADC automatic injected group conversion */
ADCx->CR1 |= CR1_AUTOJ_Set;
}
else
{
/* Disable the selected ADC automatic injected group conversion */
ADCx->CR1 &= CR1_AUTOJ_Reset;
}
}
/*******************************************************************************
* Function Name : ADC_InjectedDiscModeCmd
* Description : Enables or disables the discontinuous mode for injected group
* channel for the specified ADC
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* - NewState: new state of the selected ADC discontinuous mode
* on injected group channel.
* This parameter can be: ENABLE or DISABLE.
* Output : None
* Return : None
*******************************************************************************/
void ADC_InjectedDiscModeCmd(ADC_TypeDef* ADCx, FunctionalState NewState)
{
if (NewState != DISABLE)
{
/* Enable the selected ADC injected discontinuous mode */
ADCx->CR1 |= CR1_DISCENJ_Set;
}
else
{
/* Disable the selected ADC injected discontinuous mode */
ADCx->CR1 &= CR1_DISCENJ_Reset;
}
}
/*******************************************************************************
* Function Name : ADC_ExternalTrigInjectedConvConfig
* Description : Configures the external trigger for injected channels conversion.
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* - ADC_ExternalTrigInjecConv: specifies the ADC trigger to
* start injected conversion.
* This parameter can be one of the following values:
* - ADC_ExternalTrigInjecConv_T1_TRGO: Timer1 TRGO event
* selected
* - ADC_ExternalTrigInjecConv_T1_CC4: Timer1 capture
* compare4 selected
* - ADC_ExternalTrigInjecConv_T2_TRGO: Timer2 TRGO event
* selected
* - ADC_ExternalTrigInjecConv_T2_CC1: Timer2 capture
* compare1 selected
* - ADC_ExternalTrigInjecConv_T3_CC4: Timer3 capture
* compare4 selected
* - ADC_ExternalTrigInjecConv_T4_TRGO: Timer4 TRGO event
* selected
* - ADC_ExternalTrigInjecConv_Ext_Interrupt15: External
* interrupt 15 event selected
* - ADC_ExternalTrigInjecConv_None: Injected conversion
* started by software and not by external trigger
* Output : None
* Return : None
*******************************************************************************/
void ADC_ExternalTrigInjectedConvConfig(ADC_TypeDef* ADCx, u32 ADC_ExternalTrigInjecConv)
{
u32 tmpreg = 0;
/* Get the old register value */
tmpreg = ADCx->CR2;
/* Clear the old external event selection for injected group */
tmpreg &= CR2_EXTSELJ_Reset;
/* Set the external event selection for injected group */
tmpreg |= ADC_ExternalTrigInjecConv;
/* Store the new register value */
ADCx->CR2 = tmpreg;
}
/*******************************************************************************
* Function Name : ADC_ExternalTrigInjectedConvCmd
* Description : Enables or disables the ADCx injected channels conversion
* through external trigger
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* - NewState: new state of the selected ADC external trigger
* start of injected conversion.
* This parameter can be: ENABLE or DISABLE.
* Output : None
* Return : None
*******************************************************************************/
void ADC_ExternalTrigInjectedConvCmd(ADC_TypeDef* ADCx, FunctionalState NewState)
{
if (NewState != DISABLE)
{
/* Enable the selected ADC external event selection for injected group */
ADCx->CR2 |= CR2_EXTTRIGJ_Set;
}
else
{
/* Disable the selected ADC external event selection for injected group */
ADCx->CR2 &= CR2_EXTTRIGJ_Reset;
}
}
/*******************************************************************************
* Function Name : ADC_SoftwareStartInjectedConvCmd
* Description : Enables or disables the start of the injected channels conversion.
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* - NewState: new state of the selected ADC software start
* injected conversion.
* This parameter can be: ENABLE or DISABLE.
* Output : None
* Return : None
*******************************************************************************/
void ADC_SoftwareStartInjectedConvCmd(ADC_TypeDef* ADCx, FunctionalState NewState)
{
if (NewState != DISABLE)
{
/* Starts the selected ADC injected conversion */
ADCx->CR2 |= CR2_SWSTRTJ_Set;
}
else
{
/* Stops the selected ADC injected conversion */
ADCx->CR2 &= CR2_SWSTRTJ_Reset;
}
}
/*******************************************************************************
* Function Name : ADC_GetSoftwareStartInjectedConvCmdStatus
* Description : Gets the ADC Software start injected conversion Status.
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* Output : None
* Return : The new state of ADC software start injected conversion (SET or RESET).
*******************************************************************************/
FlagStatus ADC_GetSoftwareStartInjectedConvCmdStatus(ADC_TypeDef* ADCx)
{
FlagStatus bitstatus = RESET;
/* Check the status of SWSTRTJ bit */
if ((ADCx->CR2 & CR2_SWSTRTJ_Set) != RESET)
{
/* SWSTRT bit is set */
bitstatus = SET;
}
else
{
/* SWSTRT bit is reset */
bitstatus = RESET;
}
/* Return the SWSTRT bit status */
return bitstatus;
}
/*******************************************************************************
* Function Name : ADC_InjectedChannelConfig
* Description : Configures for the selected ADC injected channel its corresponding
* rank in the sequencer and its sample time.
* Input : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
* - ADC_Channel: the ADC channel to configure.
* This parameter can be one of the following values:
* - ADC_Channel0: ADC Channel0 selected
* - ADC_Channel1: ADC Channel1 selected
* - ADC_Channel2: ADC Channel2 selected
* - ADC_Channel3: ADC Channel3 selected
* - ADC_Channel4: ADC Channel4 selected
* - ADC_Channel5: ADC Channel5 selected
* - ADC_Channel6: ADC Channel6 selected
* - ADC_Channel7: ADC Channel7 selected
* - ADC_Channel8: ADC Channel8 selected
* - ADC_Channel9: ADC Channel9 selected
* - ADC_Channel10: ADC Channel10 selected
* - ADC_Channel11: ADC Channel11 selected
* - ADC_Channel12: ADC Channel12 selected
* - ADC_Channel13: ADC Channel13 selected
* - ADC_Channel14: ADC Channel14 selected
* - ADC_Channel15: ADC Channel15 selected
* - ADC_Channel16: ADC Channel16 selected
* - ADC_Channel17: ADC Channel17 selected
* - Rank: The rank in the injected group sequencer. This parameter
* must be between 1 to 4.
* - ADC_SampleTime: The sample time value to be set for the
* selected channel.
* This parameter can be one of the following values:
* - ADC_SampleTime_1Cycles5: Sample time equal to 1.5 cycles
* - ADC_SampleTime_7Cycles5: Sample time equal to 7.5 cycles
* - ADC_SampleTime_13Cycles5: Sample time equal to 13.5 cycles
* - ADC_SampleTime_28Cycles5: Sample time equal to 28.5 cycles
* - ADC_SampleTime_41Cycles5: Sample time equal to 41.5 cycles
* - ADC_SampleTime_55Cycles5: Sample time equal to 55.5 cycles
* - ADC_SampleTime_71Cycles5: Sample time equal to 71.5 cycles
* - ADC_SampleTime_239Cycles5: Sample time equal to 239.5 cycles
* Output : None
* Return : None
*******************************************************************************/
void ADC_InjectedChannelConfig(ADC_TypeDef* ADCx, u8 ADC_Channel, u8 Rank, u8 ADC_SampleTime)
{
u32 tmpreg1 = 0, tmpreg2 = 0;
/* if ADC_Channel10 ... ADC_Channel17 is selected */
if (ADC_Channel > ADC_Channel9)
{
/* Get the old register value */
tmpreg1 = ADCx->SMPR1;
/* Calculate the mask to clear */
tmpreg2 = SMPR1_SMP_Set << (3*(ADC_Channel - 10));
/* Clear the old discontinuous mode channel count */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = ADC_SampleTime << (3*(ADC_Channel - 10));
/* Set the discontinuous mode channel count */
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 discontinuous mode channel count */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = ADC_SampleTime << (3 * ADC_Channel);
/* Set the discontinuous mode channel count */
tmpreg1 |= tmpreg2;
/* Store the new register value */
ADCx->SMPR2 = tmpreg1;
}
/* Rank configuration */
/* Get the old register value */
tmpreg1 = ADCx->SQJR;
/* Calculate the mask to clear */
tmpreg2 = SQJR_SQJ_Set << (5 * (Rank - 1));
/* Clear the old SQJx bits for the selected rank */
tmpreg1 &= ~tmpreg2;
/* Calculate the mask to set */
tmpreg2 = ADC_Channel << (5 * (Rank - 1));
/* Set the SQJx bits for the selected rank */
tmpreg1 |= tmpreg2;
/* Store the new register value */
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