FreeMODBUS - A Modbus ASCII/RTU and TCP implementation

The port was done using the MSP430-P169[1] from Olimex. It includes a TI MSP430F169 MCU with 60Kb Flash and 2Kb RAM. Two ports are supplied - One using Rowley Crossworks[1] for the MSP430 and the other one uses GCC[2]. The files port this port can be found in demo/MSP430.

Depending upon the selected functions and transmission modes (ASCII/RTU) the following resources are used:

Module	Code	RAM (static)
Modbus RTU (Required [1])	1248Byte	266Byte
Modbus ASCII (Optional)	986Byte	16Byte
Modbus Functions [2]	2066Byte	34Byte
Modbus Core (Required)	768Byte	79Byte
Porting Layer (Required)	596Byte	9Byte

[1]:The MSP430-P169 development board can be purchased from Olimex
[2]:Rowley Crossworks for MSP430
[3]:The GNU tools are available at the MSPGCC website.