In the controlled system of distributing type in which many
computers are communicating, by way of the PC string contact with
many single chip machines to correspond is the most convenient. In
this controlled system of distributing type, the various communication
between single chip machines and microcomputer is the whole key.
According to the low achievement consume and perfect function of
MSP430，The USART that used in system of MSP430F149 can carry out this
kind of function of singular to group. It is required to solve the
voltage conversion and the change of logic relation, when the MSP430
connects with the PC string or other terminals which take with strings.
And then, we can choose the asynchronous module (UART) of MSP430F149
to complete the MSP430F149 ’s main processor in language of C and write
out the PC’s processor asking for help from The VC++6.0 and The Pcomm.
This paper introduces the structure, principle and feature of new
generation of 16 bit&Flash-type microcontroller which belongs to the
Texas Instruments MSP430F149 series. At the same time, it also
introduces how to carry out the method of the serial communication
between PC and MSP430F149. The paper presents how to use VC++6.0 design
serial port communication program,especially calling Pcomm functions
to control serial port to transfer data.
