MSP-FET430UIF and MSP430G2553 2-wire debug

Joshua Einstein

Other Parts Discussed in Thread: MSP430G2553

Using CCS 5.1 with an MSP-FET430UIF. We have a target device with Vcc, TCK, GND, and TDO coming off of it and I'm running those into the debugger using the pins called out in the hardware tools guide. Every time I try to connect, I'm getting the error: "Error connecting to the target: Unknown Device". This sounds very similar to the problem in http://e2e.ti.com/support/microcontrollers/msp43016-bit_ultra-low_power_mcus/f/166/t/37302.aspx, where the device actually was not supported.

We're using an MSP430G2553.

Does anyone have any ideas about this?

over 13 years ago

0 TonyKao over 13 years ago

Genius 3770 points

Hi Joshua,

If you're using the two-wire SBW interface, then you need to connect TEST/SBWTCK as well as RST/NMI/SBWTDIO which are the ports for Spy-by-Wire.

The G2553 also supports normal JTAG, so if you don't mind the extra pin counts that should work also for the FET430UIF.

Tony

0 Roberto Romano over 13 years ago

Guru 27285 points

Hi Joshua, is your device connected as from page 26 of hardware guide?

If so try reduce or completely remove reset capacitor and see if connection appear, again try a power cycle and if always not recognized ask again specifying how device is powered and how power sense pin are attached to UIF.

0 Joshua Einstein over 13 years ago in reply to Roberto Romano

Intellectual 700 points

Apparently we forgot the pullup on our proto-board, so I was able to get this working with some help from our local FAE. All set and working now! I appreciate the assistance.

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

MSP-FET430UIF and MSP430G2553 2-wire debug