ADC Operation Modes

ADC Result API. More...

Collaboration diagram for ADC Operation Modes:

Enumerations
enum	adc_opmode { ADC_MODE_SEQUENTIAL , ADC_MODE_SCAN , ADC_MODE_SCAN_INFINITE }

Functions
void	adc_enable_discontinuous_mode (uint32_t adc)
	ADC Enable Discontinuous Mode for Regular Conversions. More...
void	adc_disable_discontinuous_mode (uint32_t adc)
	ADC Disable Discontinuous Mode for Regular Conversions. More...
void	adc_set_operation_mode (uint32_t adc, enum adc_opmode opmode)
	ADC Set operation mode. More...

Detailed Description

ADC Result API.

Enumeration Type Documentation

adc_opmode

enum adc_opmode

Enumerator
ADC_MODE_SEQUENTIAL
ADC_MODE_SCAN
ADC_MODE_SCAN_INFINITE

Definition at line 163 of file f0/adc.h.

Function Documentation

adc_disable_discontinuous_mode()

void adc_disable_discontinuous_mode

(

uint32_t

adc

)

ADC Disable Discontinuous Mode for Regular Conversions.

Parameters

[in]

adc

Unsigned int32. ADC base address (ADC register base addresses)

Definition at line 61 of file adc.c.

References ADC_CFGR1.

adc_enable_discontinuous_mode()

void adc_enable_discontinuous_mode

(

uint32_t

adc

)

ADC Enable Discontinuous Mode for Regular Conversions.

Parameters

[in]

adc

Unsigned int32. ADC base address (ADC register base addresses)

Definition at line 50 of file adc.c.

References ADC_CFGR1, and ADC_CFGR1_DISCEN.

adc_set_operation_mode()

void adc_set_operation_mode	(	uint32_t	adc,
		enum adc_opmode	opmode
	)

ADC Set operation mode.

There are some operation modes, common for entire stm32 branch. In the text the braces are describing result to single trigger event. The trigger event is described by character T in the description. The ADC is configured to convert list of inputs [0, 1, 2, 3]. In Grouped modes, there is used group size of 2 conversions in the examples

• ADC_MODE_SEQUENTIAL: T(0) T(1) T(2) T(3)[EOSEQ] T(0) T(1) T(2) ...

In this mode, after the trigger event a single channel is converted and the next channel in the list is prepared to convert on next trigger edge.

Note

This mode can be emulated by ADC_MODE_GROUPED with group size of 1.

• ADC_MODE_SCAN: T(0123)[EOSEQ] T(0123)[EOSEQ] T(0123)[EOSEQ]

In this mode, after the trigger event, all channels will be converted once, storing results sequentially.

Note

The DMA must be configured properly for more than single channel to convert.

• ADC_MODE_SCAN_INFINITE: T(0123[EOSEQ]0123[EOSEQ]0123[EOSEQ]...)

In this mode, after the trigger event, all channels from the list are converted. At the end of list, the conversion continues from the beginning.

Note

The DMA must be configured properly to operate in this mode.

• ADC_MODE_GROUPED: T(12) T(34)[EOSEQ] T(12) T(34)[EOSEQ] T(12)

In this mode, after the trigger event, a specified group size of channels are converted. If the end of channel list occurs, the EOSEQ is generated and on the next trigger it wraps to the beginning.

Note

The DMA must be configured properly to operate on more than single channel conversion groups.

Warning

not all families supports all modes of operation of ADC.

ADC Set conversion operation mode

Note

on SEQUENTIAL mode, the trigger event is necessary to start conversion.

Parameters

[in]	adc	Unsigned int32. ADC base address (ADC register base addresses)
[in]	opmode	ADC operation mode

Definition at line 120 of file adc.c.

References ADC_CFGR1, ADC_CFGR1_CONT, ADC_CFGR1_DISCEN, ADC_MODE_SCAN, ADC_MODE_SCAN_INFINITE, and ADC_MODE_SEQUENTIAL.