UCD90160A: [Consultation] UCD90160RGCR FW online update hex file through SMBus/I2C

Hi

Have you tried the EVM with Fusion GUI? it shall have a log to display and you can compare the log from your own software and GUI.

Regards

Yihe

Hi Yihe,

I don't think we need to use EVMBoard for debugging.

We've tried on our own board which has already stuffed with UCD90160A, and we also connected with dongle/GUI to check the event logs during FW programming.

However, we still cannot program the image that we want by following your instructions.

"

Writing bin data into UCD by register 0xe2 & 0xe3.
After last step "SendByte,0x7E,0xDB" UCD will show empty after reboot.
Manually verified checksum after bin data wrote.

"

Can you help to give advice to complete development of this FW feature (online update hex file through SMBus/I2C interface)?

Thanks.

Best Regards,

Paul Lei

To be continued with previous comments, please see more information that ZT tested process and results in below:

Is UCD90160A MSB same as UCD90160 (LSB or MSB in write data flash)?

By the way, what's the purpose of SOFT_RESET (0xD8h)? If system is alive then we execute SOFT_RESET, system will shut down, I guess it's caused by below setting as screenshot (Using PMBus Control Pin only, maybe it will affect SOFT_RESET?).

Additionally, I found that 0xe2/0xe3 are the action which write configuration files into NVMe, and we don't need to store them from RAM to NVMe (step4) after step1.

I reproduce steps from reading PMbus log:

0.erase and protect bit

1.0xe2 0xe3 write data flash
2.read data flash again
3.SOFT_RESET  0xDB      SendByte

// assume store to NVM is cmd below
4.STORE_DEFAULT_ALL  0x11      SendByte

Afte step 1 & 2 , our system power down aftet step 3. No chance for step 4

Thanks.

Best Regards,

Paul Lei

Hi

if you already erase the flash and the data are not programmed, you will get a empty device after soft reset(0xDB).

The document share in the past is the right instructions.

That's why i suggest that you compare your own log with the log from the GUI on the EVM to ensure that all are good.

Regards

Yihe 

Hi Yihe,

We have found the problems that caused the FW cannot be programmed into UCD90160A, the data byte needs to use LSB not MSB form when FW programming, does it match with your understanding (in comparison with UCD90160 non-A) ?

However, we've tried to update FW by I2C/SMBus without sending SOFT_RESET, and it is as same as the method that sending SOFT_RESET.

What's the purpose of SOFT_RESET (0xD8h)? If system is alive then we execute SOFT_RESET, system will shut down, I guess it's caused by below setting as screenshot (Using PMBus Control Pin only, maybe it will affect SOFT_RESET?).

Thanks.

Best Regards,

Paul Lei

Hi Yihe,

We have encountered that has problems when using example code (UCD90160) to develop UCD90160A FW updated code.

Just like I mentioned in previous comments:

"We have found the problems that caused the FW cannot be programmed into UCD90160A, the data byte needs to use LSB not MSB form when FW programming, does it match with your understanding (in comparison with UCD90160 non-A) ?"

Got it, I've checked SOFT_RESET function in specification, and it shows approximate explanation as you said.

Additionally, SOFT_RESET is like operation command in 0x01h register to on/off system ?

If we don't need to use this SOFT_RESET function to restart power sequence configuration, I'll by-pass this function after FW update.

I guess new FW configuration will be activated after FW programming into SEQ memory, it will directly overwrite into operating RAM, right ?

Thanks.

Best Regards,

Paul Lei

Hi Yihe,

I think you mean that the function of SOFT_RESET is to (1) turn off all power supply enable signals and (2) copy flash data into RAM, then we can start new sequence FW configuration after that.

From my tested results, RAM can get latest FW configuration after update without send SOFT_RESET to copy data from flash into it.

After FW update, it seems that RAM/flash can acquire latest configuration after below process without send SOFT_RESET, is it same as your understanding ?

--> 0xe2 0xe3 write data flash

Additionally, if we turn off all enable signals in sequencer-UCD90160A, it will cause my system shut down, and we need to AC cycle to recover it.

In summary, can I by-pass these last two steps (step3 and step4) as below steps after write data to memory ?

0.erase and protect bit

1.0xe2 0xe3 write data flash
2.read data flash again
3.SOFT_RESET  0xDB      SendByte

// assume store to NVM is cmd below
4.STORE_DEFAULT_ALL  0x11      SendByte

Thanks.

Best Regards,

Paul Lei

Hi Paul, 

Yihe is OOO and will get back to you on this when he is back. 

Best Regards, 

Dhanya Prem

Hi Dhanyasree,

OK, I'm waiting for his confirmation of some function, then we can be more confident to keep progressing our FW development.

Thanks.

Best Regards,

Paul Lei

No worries

Hi Yihe,

I think the system shut off which is caused by SOFT_RESET, and it reset UCD all IOs states to default.

I originally thought that SOFT_RESET is to restart power sequencing, it seems that it's unnecessary to apply after FW programming.

Got it, I think 0xe2/0xe3 commands are match with my tested results, so we don't need to do store default all command in extra for transfer data from RAM to flash.

0xe2/0xe3 will directly write FW configuration to RAM/flash location. 

Thanks for your confirmation of my confusion.

Thanks.

Best Regards,

Paul Lei