Inverter with LPC1768

[fds290]

Good morning everyone, I'm new to the forum... forgive me for any misunderstandings and blunders.
I have a sofar solar inverter that has the lpc1768 chip installed on board.
Now the inverter has a corrupted firmware due to an incorrect update.
The PCB has an 8-pin port where it is possible to program the chip. I have 4 .bin files named:
1. HydARM.bin
2. HydDSPM.bin
3. HydDSPS.bin
4.HydGDARM.bin

How can I inject the correct firmware??
Help help....

Ps: I have already tried to contact the inverter brand and they would like it shipped... (more than 50 kg of stuff is absurd) without repair guarantee...

[g0emf]

Hi, did you ever resolve this?

I have a ME3000SP Sofar Battery inverter, and the firmware was bricked by Sofar support!

Now Support won't reply to me.

I have different versions of the firmware in both .bin and .hex format.

I have managed to upload the arm.hex file to the NXP LPC1768FBD100 microcontroller, but not able to get it to boot.

Did you ever manage to make any progress?

Thanks and regards

Dave

[Pavel_Hernandez]

Hello, my name is Pavel, and I will be supporting your case, I reviewed your case, and this device seems is not supported directly by NXP this is a device part of catalogue from SOFAR. I recommend contact directly to this vendor before avoiding your warranty.

I don't know if the SOFAR device have an open source software but this is beyond the scope of this service.

Best regards,
Pavel

[fds290]

Good morning Pavel, I know that the product was produced by Sofar but I have already tried to contact both Sofar and ZCS (Italian dealer) but they are not able to provide me with other solutions. They just want to send the inverter without any guarantee of repair and without any repair estimate.
If someone in the forum could better analyze the .bin files, perhaps it would be possible to understand if LPC1768 was programmed for the display or to control the entire system

[Pavel_Hernandez]

Hello, my apologize for that, so I understand, I could not help you about what is on the bin file, but let me know this, this bin files are available direct from the Sofar? if yes maybe, could you update the firmware if the LPC is not secured, and if you do not have an external debugger, maybe you could use the ISP to download the bin to the MCU, do you have the schematic of the board?

Best regards,
Pavel

[fds290]

the situation is very difficult, I opened a ticket in sofar but I have not received a response yet...
I do not have any diagrams, they are very secret...

[Pavel_Hernandez]

Hello, on the datasheet mention the P2 could use to enter in ISP mode.

The UART channel could be this but try by your own risk.

Best regards,
Pavel

[fds290]

Thanks for the reply, I'm no longer sure that the nxp chip is for the inverter firmware.
I saw some threads where it was said that the chip is also used to drive displays... deep crisis..
The firmware files can be downloaded from the manufacturer's website (https://www.zcsazzurro.com/it/documentazione/azzurro-hybrid-storage-inverter-hyd-hyd-3000-zss-hyd-60...) which does not give me the correct instructions for injecting the firmware with a programmer; it only gives me info on how to upgrade the firmware with the machine turned on.. but now it is stuck in the startup phase. Do you have any ideas??

[danielholala]

That's complicated. Are you sure the 10-pin port has a "Cortex 10-pin 0.05" JTAG/SWD Connector Pinout"  as described here:

https://community.nxp.com/t5/LPCXpresso-IDE-FAQs/Design-Considerations-for-Debug/m-p/469565

Then you need a debug probe (e.g., LPC-Link2) to connect to it. Further, you need some programming software on your PC, e.g., LPCScrypt, see here:

https://www.nxp.com/docs/en/user-guide/LPCScrypt_User_Guide.pdf

Note that I have no idea what these *.bin files contain.

Best of luck
Dan