ST STM32F405 Reference Manual page 391

RM0090
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
•
For the STM32F40x and STM32F41x devices, the temperature sensor is internally
connected to channel ADC1_IN16.
The internal reference voltage VREFINT is connected to ADC1_IN17.
•
For the STM32F42x and STM32F43x devices, the temperature sensor is internally
connected to ADC1_IN18 channel which is shared with VBAT. Only one conversion,
temperature sensor or VBAT, must be selected at a time. When the temperature sensor
and VBAT conversion are set simultaneously, only the VBAT conversion is performed.
The internal reference voltage VREFINT is connected to ADC1_IN17.
The V
BAT
or regular channel.
Note: The temperature sensor, V
ADC1 peripheral.
13.3.4 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.
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
and V internal channels
BAT
and the V channel are available only on the master
BAT
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