SPI通讯主程序
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发表于 2/28/2012 10:47:22 AM
阅读（2615）
使用四线制SPI通讯，主程序代码如下：
#include <ADuC7026.h>
#include "Common.h"
void SPI_ADXL345_WRITE(BYTE adress, BYTE data){
GP2CLR = 0x800000; //CS4 = LOW
delay(1); //CS to SCLK set up time
spiwrite(adress); //adress
spiwrite(data); //data to be written
delay(1); //CS to SCLK set up time
GP2SET = 0x800000; //CS4 = High
delay(1); //Wait Time
}
unsigned char SPI_ADXL345_READ(BYTE adress){
unsigned char result;
GP2CLR = 0x800000; //CS4 = LOW
delay(1); //CS to SCLK set up time
spiwrite(adress+0x80); //adress
result = spiread(0x00); //Read 8bit data (Send Dummy data 0x00)
delay (1); //CS to SCLK set up time
GP2SET = 0x800000; //CS4 = High
delay(1); //Wait Time
return result;
}
void SPI_ADXL345_M_READ(BYTE adress, BYTE RXCONT){
GP2CLR = 0x800000; //CS4 = LOW
delay(1); //CS to SCLK set up time
spiwrite(adress+0xC0); //adress in burst read mode
spiMread(0xFF, RXCONT);
delay (1); //CS to SCLK set up time
GP2SET = 0x800000; //CS4 = High
delay(1); //Wait Time
}
