Implementation Details

Function declarations ( or function prototypes) are introduced by the mnemonic cmm_func. We only allow the new style of function declarations /prototypes, where the type of the arguments is declared within the function's parentheses. For example:

cmm_func bidon(int i1,char *i2) is valid, but:

cmm_func bidon(i1,i2) int i1,char *i2; is invalid.

Note: The exact implementation of the MSP50P614/MSP50C614 stack is as follows:

on CALL:

1)Increment R7

2)Transfer TOS (top of stack) register to *R7

3)Transfer return address to TOS register

on RET:

1)next PC = TOS

2)transfer *R7 to TOS

3)decrement R7

We can freely manipulate R7 before a CALL/Ccc and after a RET to load and unload arguments to and from the stack. Of course, it would be a bad idea to mess with the TOS register in the body of a function.

5.10.4 Programming Example

The following example implements string multiplication (i.e, the multiplication of 2 integer strings). The same source file (with the exception of the first line) can be used for C± ± or regular C. In the case of regular C, it has to be compiled and linked with cmm_func.c

#define _CMM /*must be present for C± ±compiler ONLY*/ #ifdef _CMM

#else

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <math.h> #include ªcmm_back.hº #endif

#include ªcmm_func.hº #include ªcmm_macr.hº

Code Development Tools

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Texas Instruments MSP50C614 manual Programming Example, Cmmfunc bidonint i1,char *i2 is valid, but, On Call, On RET

MSP50C614 specifications

The Texas Instruments MSP50C614 is a microcontroller that belongs to the MSP430 family, renowned for its low power consumption and versatile functionality. Primarily designed for embedded applications, this microcontroller is favored in various industries, including consumer electronics, industrial automation, and healthcare devices.

One of the standout features of the MSP50C614 is its ultra-low power technology, which enables it to operate in various power modes. This makes it ideal for battery-powered applications, where energy efficiency is crucial. The MSP430 architecture allows for a flexible power management system, ensuring that energy is conserved while providing robust performance.

The MSP50C614 is equipped with a 16-bit RISC CPU that delivers high performance while maintaining low power usage. With a maximum clock frequency of 16 MHz, it can execute most instructions in a single cycle, resulting in swift operation and responsive performance. This microcontroller also comes with a generous flash memory capacity, allowing developers to store large amounts of code and data conveniently.

In terms of peripherals, the MSP50C614 is highly versatile. It features a range of digital and analog input/output options, including multiple timers, GPIO ports, and various communication interfaces like UART, SPI, and I2C. This extensive set of peripherals allows for seamless integration with other components and simplifies the design of complex systems.

The integrated 12-bit Analog-to-Digital Converter (ADC) stands out as a valuable characteristic of the MSP50C614. This feature enables the microcontroller to convert physical analog signals into digital data, making it particularly useful for sensing applications and real-time monitoring.

Another noteworthy technology employed in the MSP50C614 is its support for low-voltage operations. With a broad supply voltage range, this microcontroller can function efficiently in diverse environments and is suitable for low-power applications, enhancing its practicality.

Moreover, Texas Instruments provides software support in the form of Code Composer Studio and various libraries that make it easier for developers to program and utilize the MSP50C614 effectively.

In summary, the Texas Instruments MSP50C614 microcontroller is a powerful, low-power solution equipped with the features and technologies necessary for efficient operation in a wide array of applications. Its blend of performance, flexibility, and energy efficiency makes it a popular choice among engineers and designers looking to create innovative, sustainable designs in the rapidly evolving tech landscape.