MMA7660加速度传感器I2C程序,飞思卡尔智能车

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飞翔科技MMA7660加速度传感器

E-mail: 2008f.d@http://www.wendangwang.com

淘宝店：http://www.wendangwang.com

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#include <hidef.h> /* common defines and macros */

#include "derivative.h" /* derivative-specific definitions */

#define SCL PTJ_PTJ7

#define SDA PTJ_PTJ6

#define SCL_dir DDRJ_DDRJ7

#define SDA_dir DDRJ_DDRJ6

#define BUS_CLOCK

#define OSC_CLOCK

#define 32000000 //总线频率 16000000 //晶振频率 somenop(); asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");\

asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");\

asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");\

asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");

signed char X_value,Y_value,Z_value;

signed char X_value_final,Y_value_final,Z_value_final; //三轴加速度的最终值

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/* 初始化锁相环 */

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void INIT_PLL(void)

{

CLKSEL &= 0x7f; //set OSCCLK as sysclk

PLLCTL &= 0x8F; //Disable PLL circuit

CRGINT &= 0xDF;