Single Conversion Mode; Continuous Conversion Mode - ST STM32F205 series Reference Manual

RM0033
The total number of conversions in the injected group must be written in the L[1:0] bits
in the ADC_JSQR register.
If the ADC_SQRx or ADC_JSQR registers are modified during a conversion, the current
conversion is reset and a new start pulse is sent to the ADC to convert the newly chosen
group.
Temperature sensor, V
The temperature sensor is connected to channel ADC1_IN16 and the internal reference
voltage V
and converted as injected or regular channels.
The V
BAT
or regular channel.
Note: The temperature sensor, V
ADC1 peripheral.
10.3.4

Single conversion mode

In Single conversion mode the ADC does one conversion. This mode is started with the
CONT bit at 0 by either:
•
setting the SWSTART bit in the ADC_CR2 register (for a regular channel only)
•
setting the JSWSTART bit (for an injected channel)
•
external trigger (for a regular or injected channel)
Once the conversion of the selected channel is complete:
•
If a regular channel was converted:
–
–
–
•
If an injected channel was converted:
–
–
–
Then the ADC stops.
10.3.5

Continuous conversion mode

In continuous conversion mode, the ADC starts a new conversion as soon as it finishes one.
This mode is started with the CONT bit at 1 either by external trigger or by setting the
SWSTRT bit in the ADC_CR2 register (for regular channels only).
After each conversion:
•
If a regular group of channels was converted:
–
–
–
REFINT
is connected to ADC1_IN17. These two internal channels can be selected
REFINT
channel (connected to channel ADC1_IN18) can also be converted as an injected
REFINT
The converted data are stored into the 16-bit ADC_DR register
The EOC (end of conversion) flag is set
An interrupt is generated if the EOCIE bit is set
The converted data are stored into the 16-bit ADC_JDR1 register
The JEOC (end of conversion injected) flag is set
An interrupt is generated if the JEOCIE bit is set
The last converted data are stored into the 16-bit ADC_DR register
The EOC (end of conversion) flag is set
An interrupt is generated if the EOCIE bit is set
and V internal channels
BAT
and the V channel are available only on the master
BAT
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