I'm having a problem getting the ADC to perform conversions from a single input. Steps taken: Apply a high DC input voltage Setup and enable ADC12 (see setting below) Set ENC & ADC12SC bits Wait for ADC12BUSY to go low Wait for ADC12IFG0 to go high (not interrupt driven) Read ADC12MEM0 (first read) Apply a low DC input voltage Set ENC & ADC12SC bits Wait for ADC12BUSY to go low Wait for ADC12IFG0 to go high (not interrupt driven) Read ADC12MEM0 (last read) The first-read is good, the last-read is wrong. Is there something wrong with this approach? (What am I missing?) Here are my settings: ADC12CTL0 0x0C72 ADC12 Control 0 [Memory Mapped] SHT1 0000 - SHT1_0 ADC12 Sample Hold 0 Select 0 SHT0 1100 - SHT0_12 ADC12 Sample Hold 0 Select 0 MSC 0 ADC12 Multiple SampleConversion REF2_5V 1 ADC12 Ref 0:1.5V / 1:2.5V REFON 1 ADC12 Reference on ADC12ON 1 ADC12 On/enable ADC12OVIE 0 ADC12 Overflow interrupt enable ADC12TOVIE 0 ADC12 Timer Overflow interrupt enable ENC 1 ADC12 Enable Conversion ADC12SC 0 ADC12 Start Conversion ADC12CTL1 0x0200 ADC12 Control 1 [Memory Mapped] CSTARTADD 0000 - CSTARTADD_0 ADC12 Conversion Start Address 0 SHS 00 - SHS_0 ADC12 Sample/Hold Source 0 SHP 1 ADC12 Sample/Hold Pulse Mode ISSH 0 ADC12 Invert Sample Hold Signal ADC12DIV 000 - ADC12DIV_0 ADC12 Clock Divider Select 0 ADC12SSEL 00 - ADC12SSEL_0 ADC12 Clock Source Select 0 CONSEQ 00 - CONSEQ_0 ADC12 Conversion Sequence Select 0 ADC12BUSY 0 ADC12 Busy ADC12IFG 0x0000 ADC12 Interrupt Flag [Memory Mapped] ADC12IE 0x0000 ADC12 Interrupt Enable [Memory Mapped] ADC12IV 0x0000 ADC12 Interrupt Vector Word [Memory Mapped] ADC12MEM0 0x0A67 ADC12 Conversion Memory 0 [Memory Mapped] ADC12MCTL0 0x54 ADC12 Memory Control 0 [Memory Mapped] EOS 0 ADC12 End of Sequence SREF 101 - SREF_5 ADC12 Select Reference Bit 0 INCH 0100 - INCH_4 ADC12 Input Channel Select Bit 0
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