TIDEP-0091: Unable to make the setup work

Hi Prudhvi,

Unfortunately I cannot comment much on your board modifications unless you are able to provide more information. Keep in mind that you should make all of the modifications if you are trying to run the full extent of the demo.

I do not understand what you mean when you say the system doesn't work well. What kind of data are you receiving over UART? Can you send a screenshot?


Cheers,
Akash

Hello,

My device is ES3.0. I am away from my setup but I will get back with screen shots as soon as possible.

1. When I run the demo there seems to be some shorting happening and no data appears on the serial monitor.

2. As soon as I plug out BOOST board UART screens ends at "MSP432: Wait for power good......"

3. When I loosely connect the BOOST board (which means some connections are not done) UART port of MSP432 works fine and goes till the list of available commands.

4. When I type in c or <space> there is no successful measurement.

There seems to be a definite modification issue which I have done to the board. I have followed the mandatory steps required only from "Getting Started Guide – Software & Hardware". I have also come across the document TIDUD26B which seems to have different modifications to be made. Which one should I be following?

Regards,

Prudhvi Sagar
 

Hi Prudhvi,

Let us know if you have that screenshot available, we'll need more information in order to assist you. A picture of your setup might be of use as well.

If you are waiting for power good then you might not have soldered on the PMIC Enable Resistor at R102, can you confirm?


Cheers,
Akash

Hello,

Sorry for the delay I was on vacation. Yes I have soldered a 0ohm resistor in place of R102. I have attached screenshots and pictures of different scenarios.

1. Just MSP432 Launchpad without BOOST board:

2. MSP432 with BOOST board completely sitting on it doesnt show anything on serial port:

3. MSP432 with BOOST board slightly lifted gives the following result:

When completely connected turns on WARMRST led aswell

Hello,
I feel there is an issue with the modification of the board as when I connect the BOOST board it turns OFF even UART of MSP432 LP. The modifications to the board: R102, R9, R164 are added and 7th pin of J6 was connected to SW2, whereas in the Getting Started Guide J5 was in place of J6. Later were J5 and J6 interchanged? Do I test by connecting to 7th pin of J6 to SW2?

Regards,
Prudhvi Sagar

Hi Prudhvi,

The "waiting for power good" command is the result a failure of the MSP432 to program the LP87524J PMIC into auto-PFM mode. Have you altered any of the #defines in the demoo_common.h (In the msp_level_sense_demo folder)?


Cheers,
Akash

Hello,

I have not changed anything in the given example code.

When I slightly lift the BOOST board as I have attached it goes beyond "waiting for power good". It's only without the BOOST board that it stops there. The serial connection completely stops when BOOST board is connected to MSP432.

Regard,

Prudhvi Sagar