Tool/software:
Hello.
I have the ADC (both, doing simultaneous sampling) set to 10 bits, averaging (4),unsigned. External trigger via GPIO event. No FIFO. No DMA. External reference.
This works well.
I then change it to 8 bits, no averaging.
The first conversion after this change is *often* but not always wrong.
With a constant input, see snip, the analogue input is *always* at approx. 230 +-2 LSBs.
Same with other ADC.
Probing the analogue signal on a 'scope, it is always consistent with an ADC 230 value - a 70 LSB step is huge, approx. 90 mV - so I would easily see this.
ADC read looks like:
*ptr8_buffer0++ = (unsigned char) ((DL_ADC12_getMemResult(ADC12_0_INST, DL_ADC12_MEM_IDX_0) ));
*ptr8_buffer1++ = (unsigned char) ((DL_ADC12_getMemResult(ADC12_1_INST, DL_ADC12_MEM_IDX_0) ));
Above is copied to a temp. buffer for debug.
Thanks.
