TPMS 2-Wheeler

https://elpisit-my.sharepoint.com/:x:/g/personal/satish_sl_elpisitsolutions_com/IQBqtPPkVkHYQYn1cfeNjLrCActA1MiZg4oeaJR4UYhaK_A?e=2CahoA

Please find the design document added with Boot sequence, flow chart, reset and SPI signal wave forms(CLK and MOSI during power on).

Now for step 3 we are doing rework. Once it is done will flash the binary and test

Problem

As there is no provision to isolate power to Flash, we cannot able to do as you suggested. As the PCB is too small we couldn't able to cut the tracks also.

Alternatively, we are planning to boot using BOOT step1 from external master.

The Renesas suggested as below

If so, the 1-wire UART is suggested.

Let me detail the steps here:

1, Preparing one FDTI usb to uart module.

2, Make sure the USB2UART module connect the same ground with your PCB

3, short the USB2UART TX/RX with a 1kohm resister.

4, connect the USB2UART rx to your PCB P0_5 pin.

5, using the toolbox that I have show you how-to select the UART port.(do not attach the JLink)

6, click connect button, and wait for the RESET (green one) log shows up.

7, power on the PCB.

8, then the chip will be connected with flash been isolated

Followed as per the steps suggested by Renesas team.

But we didn't get the RESET(green one) log shows up.
The obtained result is attached and updated to Renesas team and waiting for their reply

The booting failure issue has been solved. Now the MCU(DA14533) is booting with one wire uart with flash mounted. UART is also working. Log file is attached(terminal log) along with Smart snippets tool log.