Other Parts Discussed in Thread: UNIFLASH, IWR6843
hi team,
our customer Kadex is currently working on a radar project were they have build a custom board with PMIC LP87524-Q1 on it.
Unfortunately they are having some issues, were I would need some of your help.
Could you please have a look into below and help providing feedback?
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We have received the samples and put them on our custom board.
Crossing some minor difficulties, we now have power to our radar module.
The problem is we can’t get the PMIC to work by just setting a pull-up resistor to the EN1 pin. Also toggling this pin won’t enable the PMIC.
All registers are indicating this should work but we can’t get it to work.
By enabling the PMIC in software with use of I2C(register: LP8752_BUCKx_CTRL1) we can get the power enabled and the radar can be used.
We now can communicate with the radar module, but it seems there is no software running. To flash firmware on the module, we have set the module in bootloader mode by setting the SOP2 pin high.
We are trying to flash the firmware with UniFlash on a windows machine, but we can’t get UniFlash to work with our custom board. The software hangs on “set break signal”.
If I monitor the UART transmit pin with our oscilloscope I notice, there is no break signal sent over UART.
When I manually send a break signal with a serial terminal, I can easily communicate with the bootloader following the commands described in SWRA627: “IWR6843 Bootloader Flow”.
It seems UniFlash can’t communicate with our usb-to-uart bridge.
We use the CP2102N-MINIEK usb-to-uart bridge to communicate with the radar module.
Can you please answer the following questions:
- How can we get the power chip to with hardware and without I2C communication.
- Why can’t we get UniFlash to work with our custom hardware.
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Thanks!
Best Regards,
Brian
