hal_spi.c

RF tranceiver MSP430F1611+CC2420 with FreeRTOS

/*******************************************************************************************************
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 *      ***   +++   ***                                                                                *
 *      ***   + +   ***                                                                                *
 *      ***   +                        CHIPCON HARDWARE ABSTRACTION LIBRARY FOR THE CC2420             *
 *      ***   + +   ***                                   Idle looping                                 *
 *      ***   +++   ***                                                                                *
 *      ***        ***                                                                                 *
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 * The Chipcon Hardware Abstraction Library is a collection of functions, macros and constants, which  *
 * can be used to ease access to the hardware on the CC2420 and the target microcontroller.            *
 *                                                                                                     *
 * This file contains a function which initialises the SPI interface on UART1.                         *
 *******************************************************************************************************
 * Compiler: MPS430-GCC or IAR C/C++ Compiler for MSP430                                               *
 * Target platform: MSP430FET CC2420 + any MCU                                                         *
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 * Revision history:                                                                                   *
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#include "..\include\rfcom.h"
#include "..\..\..\Os\include\FreeRTOS.h"

//-------------------------------------------------------------------------------------------------------
//	void halSpiInit(void)
//
//	DESCRIPTION:
//		Initalises the MSP430 Port 5/UART1 for SPI use.
//
//-------------------------------------------------------------------------------------------------------
void halSpiInit(void) {	
	U1CTL  = CHAR + SYNC + MM + SWRST;	    // SW  reset, 8-bit transfer, SPI master
	U1TCTL = CKPH + SSEL1 + STC;	            // Data on Rising Edge, SMCLK, 3-wire

	U1BR0  = 0x02;		 	            // SPICLK set baud
	U1BR1  = 0;                                 // Dont need baud rate control register 2 - clear it
	U1MCTL = 0;		 	            // Dont need modulation control

	P5SEL = BM(MOSI) | BM(MISO) | BM(SCK);
	P5DIR = BM(MOSI) | BM(SCK) | BM(CSN);
        P5OUT = BM(CSN);

        ME2   |= USPIE1;		            // Module enable
	U1CTL &= ~SWRST;	                    // Remove RESET
} // SpiInit