Re: Not able to change contents of I2CRB of MSP430

Hey again !

To independently set something in the MSP430F155, it seems you need to use
the JTAG interface. Since you're debugging, I can only assume you have a
JTAG connection set up with the device already and the IAR environment is
monitoring this interface somehow. Have a look at the following document:

http://focus.ti.com/lit/an/slaa149a/slaa149a.pdf

In it, chapter 3.3 on page 18 explains how to read and write to non-FLASH
locations on the chip using the JTAG connectivity. If this is not viable for
you, then the next best solution I can think of is to write a debug routine
into the I2C master chip which writes the desired debug data into the
MSP430.

Hope this helps.

- Antti Keskinen

"Narottam" <narsingh21@xxxxxxxxx> wrote in message
news:sI6dnUx1pPCCqn7enZ2dnUVZ_v6dnZ2d@xxxxxxxxxxxxxxx
"Narottam" <narsingh21@xxxxxxxxx> wrote in message
news:A8ednY4hl5MyUnzeRVn-pw@xxxxxxxxxxxxxxx
Hello All,

I am using IAR C/C++ compiler for MSP430. In the project I am sending
some data through MSP430 to another chip through I2C.I have made
MSP430
as slave. While debugging I want to change manually the contains of
I2CRB
through register window,but its not allowing me to do,again the
contains
will come to its default value. I found in the header file supplied
with
the IAR package of MSP430,they made I2CRB as READ_ONLY.
Is there any reason to do so? If not then how can I change the
contains
of I2CRB register while debugging?

Thanks in advance.


Please be more specific. What is the chip you're using. MSP430 is a group
of
microcontrollers from Texas Instruments, and not all of them have a I2C
interface. Some have a software I2C through SPI/UART, some have a
hardware
I2C.

State the precise chip name and perhaps we can help you more.

Regards,
Antti Keskinen




I am using msp430F155.



.

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