SLAZ731B January   2019  – August 2021 MSP430FR50431

 

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6.3 ADC68

ADC Module

Category

Functional

Function

ADC may stop converting when the extended sample mode is selected

Description

The ADC may stop converting, if the extended sample mode is selected (ADC12CTL1.ADC12SHP = 0) and the interrupt flag will not be set.
The only way to recover the ADC conversion is to
1. Disable ADC12_B module (ADC12CTL0.ADC12ENC = 0 and ADC12CTL0.ADC12ON = 0)
2. Re-enable ADC12_B module (ADC12CTL0.ADC12ON = 1 and ADC12CTL0.ADC12ENC = 1)
3. Trigger the sample-and-hold source

Workaround

Use the pulse sample mode (ADC12CTL1.ADC12SHP = 1).