CCS/MSP430G2553: Error connecting to target: unknown device

Kate Lee

Prodigy 250 points

Part Number: MSP430G2553
Other Parts Discussed in Thread: DRV8662EVM, MSP-FET,

Tool/software: Code Composer Studio

OS: Windows 7, 64-bit

CCS version: v7

Device: MSP430G2553 of the DRV8662EVM

Hello,

I recently adapted the main.c code of the MSP430 for the haptic driver DRV8662EVM using CCS, so that the number of cycles (g_cycles) is around 50 and the frequency (g_bin) is lower, around 90Hz. I also commented out the other waveform effects so that the driver only plays one type of waveform. A screenshot of the updated code is shown below:

I was able to update the MSP430, and it seems be fine for the first couple of times, with the LED "on" when the driver is connected to a power source. But after a few tries, the driver is not lighting up or giving out an output voltage. When I try to update the code again and connect the JTAG to the driver, it gives an error message saying: "Error connecting to the target: unknown device". From what I understand, the JTAG cannot communicate with the MSP430 possibly because the driver is broken? The error message is shown below:

Could you please advice on what could have gone wrong? Is this an issue on the CCS side or the MSP430 side?

Thank you for your help!

Kate

over 8 years ago

0 Caleb Overbay over 8 years ago

TI__Genius 15370 points

Hi Kate,

You mentioned the LED was originally on and now it always stays off. Are you sure the board is receiving power? Also are you supplying power to the MSP430 via the debugger or is it being supplied by the board?

Best regards,
Caleb Overbay

0 Kate Lee over 8 years ago in reply to Caleb Overbay

Prodigy 250 points

Hi Caleb,

Yes, I'm sure the board is receiving power. I've checked the voltage with a multimeter. I have tried supplying power through both the debugger and through the board, hoping maybe it wasn't receiving enough power, but it still does not work.

Thanks and really appreciate your help.

Kate

0 Suraj Jagtap over 8 years ago

Intellectual 305 points

Hi KATE, as you have described above most of the time error occurs due JATG.If you are using TI launch pad then remove the jumper ports that connects your main controller to MSP430 emulator and try to update the MSP430 firmware.Then try to load your program in controller.

0 Kate Lee over 8 years ago in reply to Suraj Jagtap

Prodigy 250 points

Hi Suraj,
I'm not using the TI launch pad though, so I'm not sure if this solution applies to my case. I'm using an MSP-FET and JTAG2SBW to connect CCS to my MSP430. The issue is that I can't get a connection between CCS and MSP430, so the MSP430 firmware can't be updated. Or am I misunderstanding how to update the MSP430 firmware?
Thank you.
Kate

0 Ryan Brown1 over 8 years ago in reply to Kate Lee

TI__Guru**** 219677 points

Kate,

This is a hardware communication issue between the MSP-FET and MSP430G2553 target device. Please make sure that the following MSP-FET connections are correct:

JTAG pin 2 (VCC_TOOL) if MSP-FET powered, or JTAG pin 4 (VCC_TARGET) if externally supplied, to VCC
JTAG pin 9 (GND) to GND
JTAG pin 7 (TCK) to SBWTCK
JTAG pin 1 (TDO/TDI) to SBWTDIO

You could also try changing the RST-line passive component values to a 47 kOhm pull-up resistor and 1 nF pull-down capacitor.

Regards,
Ryan

0 Kate Lee over 8 years ago in reply to Ryan Brown1

Prodigy 250 points

Hi Ryan,

I've checked the connections again and I've placed a jumper on J3 of the JTAG2SBW so that power goes to the MSP430/board. But now I'm getting a different error:

What could be the issue now? Thanks for your help.

Kate

0 Ryan Brown1 over 8 years ago in reply to Kate Lee

TI__Guru**** 219677 points

Kate,

The DRV8662EVM schematic shows that the SBW header has not connections to 3.3V, I am still not convinced that the MSP430G2553 is receiving power. Please refer to the following post:

e2e.ti.com/.../943274
e2e.ti.com/.../1890.what-is-required-to-program-the-drv26xx-or-drv86xx-haptic-evaluation-modules-evm

Note that the MSP-FET can be used in place of the MSP-FET430UIF.

Regards,
Ryan

0 Caleb Overbay over 8 years ago in reply to Kate Lee

TI__Genius 15370 points

Hi Kate,

Are you still having trouble connecting to the device? If you've solved the issue could you post your solution for others to use if they encounter a similar issue?

Best regards,
Caleb Overbay

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CCS/MSP430G2553: Error connecting to target: unknown device