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SPI 的代码
spi.c
/* SPI接口子程序,供CH374子程序库调用 */
UINT8 CH374_READ_REGISTER( UINT8 mAddr ) /* 外部定义的被CH374程序库调用的子程序,从指定寄存器读取数据 */
{
UINT8 d;
Spi374Start( mAddr, CMD_SPI_374READ );
d = Spi374InByte( );
Spi374Sto
spi.c
/* SPI接口子程序,供CH374子程序库调用 */
UINT8 CH374_READ_REGISTER( UINT8 mAddr ) /* 外部定义的被CH374程序库调用的子程序,从指定寄存器读取数据 */
{
UINT8 d;
Spi374Start( mAddr, CMD_SPI_374READ );
d = Spi374InByte( );
Spi374Sto
spi.c
/* SPI接口子程序,供CH374子程序库调用 */
UINT8 CH374_READ_REGISTER( UINT8 mAddr ) /* 外部定义的被CH374程序库调用的子程序,从指定寄存器读取数据 */
{
UINT8 d;
Spi374Start( mAddr, CMD_SPI_374READ );
d = Spi374InByte( );
Spi374Sto
spi.h
#ifndef INC_SPI_H
#define INC_SPI_H
#include "types.h"
#include "LPC21xx.h"
#include "sysdefs.h"
#define MAXIM_SET_BAUD_MASK 0x000f
#define MAXIM_B600 0xf
#define MAXIM_B1200 0xe
#define MAXIM_B24
spi.c
#include
#include
void SPI_init(void)
{
SSPEN = 1; //Enable ssp module
TRISC5 = 0; //SDO 输出
TRISC4 = 1; //SDI 输入
TRISC3 = 0; //SCK 主控模式为输出
SSPCON &= 0xF0; //cle
spi.pjt
; Code Composer Project File, Version 2.0 (do not modify or remove this line)
[Project Settings]
ProjectName="spi"
ProjectDir="C:\ti\myprojects\spi\"
ProjectType=Executable
CPUFamily=TMS320C28X
spi总线.c
#include
#include
#include
unsigned int i;
void port_init(void)
{
PORTA = 0xFF;
DDRA = 0x00;
PORTB = 0xFF;
DDRB = 0x00;
PORTC = 0x00;
DDRC = 0xFF;