ADE7880 Register read problem

vivekpkd 6 months ago

Hi,

i have an issue regarding reg read of ade7880 - i have seen some questions in this community regarding CHECKSUM read , its helps me little bit but not fully

following things i have done after power up .

1. I2C_LOCK

2. Read CHECKSUM Register 0xE51F -returns 0x00

3. Read COMPMODE Register 0xE60E -returns 0x01FF

4. Read CFMODE Register 0xE610 -return 0x0EA0

5. Read ACCMODE Register 0xE701 -returns 0x80

6. Read AIGAIN Register 0x4380 - returns 0x0000

Written 0xAAAA to AIGAIN and Read back - returns 0x0000

7. Read Version register 0xE707 - Return 0x01

what is problem behind CHECKSUM reg..

2. Read CHECKSUM Register 0xE520 -returns 0x00
[edited by: vivekpkd at 11:20 AM (GMT -4) on 29 Oct 2021]

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vivekpkd 6 months ago in reply to dlath +1

Hi dlathThanks for reply,

i found the problem Checksum address is 0xE51F (thats mistake i have done ), Then one thing need to note that we need to read the checksum register very first thing do after performing…

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0 dlath 6 months ago

Make sure you are setting the Run register (address 0xE228), not all functionality is enable until the Run register is set.
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0 vivekpkd 6 months ago in reply to dlath

dlath i have set Run Register , After that i reads AVRMS Reg , its Values are wrong , 0x0EDA82A6 is getting everytime . then i reads VAWV reg same result , ..why.. where i missed ...
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0 dlath 6 months ago in reply to vivekpkd

What is the issue? You read AVRMS (addr. 0x43C1) and VAWV (addr. 0xE510) and it always gives the same value?

The CHECKSUM will change based on values in the ADE7880. The recommendation is to perform all setup then read CHECKSUM so that you have a valid checksum value for when the IC is configured as you want to use it.

Check Page 82 of the data sheet, https://www.analog.com/media/en/technical-documentation/data-sheets/ADE7880.pdf , for a quick setup guide on how to get running, are you following all the correct steps there?
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0 dlath 6 months ago in reply to vivekpkd

What is the issue? You read AVRMS (addr. 0x43C1) and VAWV (addr. 0xE510) and it always gives the same value?

The CHECKSUM will change based on values in the ADE7880. The recommendation is to perform all setup then read CHECKSUM so that you have a valid checksum value for when the IC is configured as you want to use it.

Check Page 82 of the data sheet, https://www.analog.com/media/en/technical-documentation/data-sheets/ADE7880.pdf , for a quick setup guide on how to get running, are you following all the correct steps there?
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