SparkFun Forums 

Where electronics enthusiasts find answers.

Is it possible to communicate with my PC

Discussions on how to get your MSP JTAG programmer up and running.

Is it possible to communicate with my PC

By Gavin
-  Wed May 25, 2005 3:56 am #5239
via the serial cable with MSP-449STK-2? I am thinking about whether
it's okie to directly connect the serial ports of the two and then write
a firmware to send numbers from PC to the LCD display.

By humberto
-  Fri May 27, 2005 1:02 am #5275
Yes, You have to program the comunications port RS232 and make so kind of protocol to write to the LCD.

By Gavin
-  Tue May 31, 2005 10:24 pm #5345
Thank you Humberto.
I am concerned with the voltage difference, since the battery on my board
is 3.0V while normal RS232 port has a voltage of 12V. When I connect them
directly, will it burn my MSp430F449 or will it short circuit my PC?

By humberto
-  Wed Jun 01, 2005 2:00 am #5350
No problem gavin,
the transistor BC846 and BC807 will protect the MSP.

Have in mind that you gonna need a cable with 3 wires that change TX and RX between the PC and the kit.


Humberto Santos
http://www.dem.ubi.pt/~humberto/ensino/microcontrolers/
 Return to “MSP Microcontrollers”