LP-MSPM0L2228: Blue led not on pin in documentation.

Wim Stremerch

Tool/software:

Dear,

While using the schematic documentation in the LP-MSPM0L2228 Evaluation Module User's Guide (https://www.ti.com/lit/ug/slau928/slau928.pdf) I discovered an issue with the connection of the blue LED. According to the documentation (and the out_of_box example design), the blue LED is at pin 72 (PA23_VREF+), but in order to get the blue LED working pin 45 (PA16_ADC14) must be used. The evaluation board is marked "Rev. A"

Where can I find the latest (correct) launchpad documentation please?

Best regards,

Wim

over 1 year ago

0 Bruce McKenney over 1 year ago

Guru 102925 points

My board is marked "Rev E1".

My ohmmeter indicates 10MOhm between PA16 (BP header) and J4.

There's no (other) pin to probe PA23, but example gpio_toggle_output uses PA23 and lights the blue LED.

I suspect we have different generation Launchpads, but I don't know whose is earlier/later.

+1 Pengfei Xie over 1 year ago

TI__Genius 13395 points

The Launchpad user guide is not updated. And this released user guide is for Rev. E launchpad.

Attach the latest Rev. A launchpad schematic for you to refer.

FileMCU128_LP-MSPM0L2228.pdf

0 Bruce McKenney over 1 year ago in reply to Pengfei Xie

Guru 102925 points

If I buy a new one (from the TI Store) today, will I get a Rev A?

Arm-based microcontrollers

Arm-based microcontrollers forum

LP-MSPM0L2228: Blue led not on pin in documentation.