MSP430FR2355: Error when programming new chip using Launchpad

John Crainer

Part Number: MSP430FR2355
Other Parts Discussed in Thread: MSP-EXP430FR2355,

I am a graduate student working on my thesis research project, which utilizes the MSP430FR2355. I tested my code successfully on the related launchpad (MSP-EXP430FR2355). Now I am trying to integrate this microcontroller onto my own PCB system. I am using the Launchpad's eZ-FET Debug Probe to program my code onto brand new, out of the box microcontrollers, and I am receiving this error (on CCS):

I am connecting the GND, 3V3, SBWTDIO, and SBWTCK pins for programming.

Along with using my own board design, I have tried replacing the microcontroller in my launchpad with a brand new one that I had ordered, resulting in the same error.

What is the programming process with brand new microcontroller chips? Are there any other flash/programming steps before starting a debug session with my code in CCS?

Thank you in advance!

over 1 year ago

0 Xiaodong LI over 1 year ago

TI__Mastermind 22675 points

Hi John

Please check 2.6 Using the eZ-FET Debug Probe with a Different Target chapter of MSP430FR2355 LaunchPad Development Kit (MSP-EXP430FR2355) User's Guide

GND, 3V3, SBWTDIO, and SBWTCK connection should be OK.

Please check the connections for SBW, power connection and crystal (if have) of your own PCB system according to 7 Applications, Implementation, and Layout chapter of MSP430FR235x, MSP430FR215x Mixed-Signal Microcontrollers datasheet (Rev. D)

Thanks!

0 zrno soli over 1 year ago

Guru 34453 points

John Crainer said:
What is the programming process with brand new microcontroller chips? Are there any other flash/programming steps before starting a debug session with my code in CCS?

SBW on brand new MSP430 should work like used LP target device. There is no any other flash/programming steps before starting debug session.

0 John Crainer over 1 year ago in reply to Xiaodong LI

Prodigy 10 points

Thank you for the quick reply! I will revise my PCB design. However, I am still having an issue with the Launchpad, as the microcontroller I swapped out (brand new) onto it is having the similar "Unknown Device" error. I haven't changed any connections on the launchpad. What could be causing this?

0 Xiaodong LI over 1 year ago in reply to John Crainer

TI__Mastermind 22675 points

Hi John

Could you please comment what kind of board (your board or launchpad) and what device (used MCU?) does the "Unknown Device" error happen?

Thanks

0 John Crainer over 1 year ago in reply to Xiaodong LI

Prodigy 10 points

Yes! I got this error with the launchpad when I replaced the soldered-in MCU with a new one I had ordered (MSP430FR2355).

0 Xiaodong LI over 1 year ago in reply to John Crainer

TI__Mastermind 22675 points

Hi John

>> I tested my code successfully on the related launchpad (MSP-EXP430FR2355).

if you use launchpad (MSP-EXP430FR2355), May I know if the "unknown device" error happens?

Thanks

0 John Crainer over 1 year ago in reply to Xiaodong LI

Prodigy 10 points

Yes, the "unknown device" error happens when I use the MSP-EXP430FR2355 launchpad.

Thank you!

0 Xiaodong LI over 1 year ago in reply to John Crainer

TI__Mastermind 22675 points

Hi John

On your post " I tested my code successfully on the related launchpad (MSP-EXP430FR2355)"

I think there is no issue during using launchpad

I guess "unknown device" error happens when you used ezFET of launchpad "plus" your own PCB board.

is my understanding is correct?

Thanks

0 John Crainer over 1 year ago in reply to Xiaodong LI

Prodigy 10 points

Yes, but unfortunately i am now getting that error with my launchpad, attempting to program the onboard MCU with connections to the 3V3, GND, and SBW pins (no custom PCB attached)