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Delta A221 #1

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KiKiHUN1 opened this issue Aug 29, 2022 · 3 comments
Open

Delta A221 #1

KiKiHUN1 opened this issue Aug 29, 2022 · 3 comments

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@KiKiHUN1
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Hi.
I have a delta a221 psu.
After a bit of editing i can read out the eeprom fine.
But with mcu i'm stuck. If i scan trough the entire thing, i can only read some weird values, 5 of them changes after putting under load, but can't get out which one is the output volt and amper and maybe temp.
@sxjack
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sxjack commented Aug 29, 2022

I can't really help you I'm afraid as I don't have that PSU.

Do you have specification PMBus_Specification_Part_II_Rev_1_0_20050328.pdf and can you read the text strings?

@KiKiHUN1
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KiKiHUN1 commented Aug 29, 2022 •
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I can read the eeprom's content and i can get the serial and psu manufacturer from there, but not from the mcu.
But i'm stuck with these uint16_t values returned by the mcu [read_block size:3].
Turned_on.txt
turned_off.txt

@KiKiHUN1
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KiKiHUN1 commented Aug 30, 2022 •
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I found these:
Address: 5E, | 0: normal 3: short circuit | error
Address: 0, | value/100 celsius | temp
Address: 20, | value rpm | fan speed

Can you send a copy of your mcu reply's?

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@sxjack @KiKiHUN1