Current status of internal SAR registers (mostly for debug)
CUR_CHAN | current channel being sampled (channel 16 indicates the injection channel), only valid if BUSY. |
SW_VREF_NEG | the current switch status, including DSI and sequencer controls, of the switch in the SARADC that shorts NEG with VREF input (see NEG_SEL). |
BUSY | If high then the SAR is busy with a conversion. This bit is always high when CONTINUOUS is set. Firmware should wait for this bit to be low before putting the SAR in power down. |