DS90UB935-Q1: ADC configuration Query regarding high and low level

pradeep s

Part Number: DS90UB935-Q1

We are using GPIO1 (pin no. 18) as ADC for the external voltage monitor.

We have configured the ADC code for high-level (111) and low-level (000) threshold detection.

once the voltage reaches the low-level threshold, the interrupt generates a low-level limit, if the voltage reaches the high-level threshold, the interrupt still generates the low-level limit instead of the high-level limit.

over 2 years ago

0 Darrah Merillat over 2 years ago

TI__Mastermind 26770 points

Hello,

Thank you for reaching out. Can you please share the register settings you are using to program the voltage monitoring? Are you reading register 0x57 to determine which threshold is being flagged, can you provide the values you are seeing for both voltage cases? If you are monitoring the interrupt with a different method, can you explain your process?

Regards,
Darrah

0 pradeep s over 2 years ago in reply to Darrah Merillat

Prodigy 10 points

The register settings are

write 0x17, 0x0E

write 0x1A, 0x70

we are always reading in register 0x57, 04 value

If the voltage changes low-level or high-level threshold, we are always reading in 0x57 register 04 (SENSO_V1_low limit) value.

0 Darrah Merillat over 2 years ago in reply to pradeep s

TI__Mastermind 26770 points

Hello,

Bits 0x17[7:4] are actually reserved and need to be set to 0x3. Can you update your register settings to 0x17 = 0x3E and see if that functions as expected?

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DS90UB935-Q1: ADC configuration Query regarding high and low level