Tool/software:
Hello, everyone. I have a question I hope you can help me with. I wrote the checksum in the following way, but the program could not be powered on and started, I executed 0xD6 instruction, unexpected numbers appeared. May I ask you what the problem is? Thank you very much.
Thank you for your reply. I have another problem. If the program runs correctly, UCD3138 will respond to the DEVICE_ID pmbus command. Conversely, if UCD3138 does not respond to the DEVICE_ID pmbus command,it means the program is not running?
If the program executes "pmbus_read_write_rom_mode(PMBUS_WRITE)"(backdoor), does it automatically jump to rom mode and does not execute the program?
I will now ground the FAULT0 pin and download the program, unchecked to run the situation below. You can find that the program has been downloaded successfully but has not been executed. If execution at this time triggers later, the result is no DEVICE_ID.
If the following conditions occur.
If No PMBus devices responded to a DEVICE_ID request, is the backdoor of the program triggered? Is there any other situation where the program is downloaded successfully but no DEVICE_ID is available?
if((MiscAnalogRegs.GLBIOREAD.bit.FAULT0_IO_READ == 0) || (PMBusRegs.PMBCTRL1.bit.SLAVE_ADDR == 0x7e))//0x7e
{
pmbus_read_write_rom_mode(PMBUS_WRITE);
}