#include?“ADXL345.h“
#include?“delay.h“
void?SPI_init（void）
{
?
??GPIO_InitTypeDef?GPIO_InitStructure;
??SPI_InitTypeDef????SPI_InitStructure;??
??RCC_APB2PeriphClockCmd（RCC_APB2Periph_AFIO?|?RCC_APB2Periph_GPIOA?|
?????????????????????????RCC_APB2Periph_GPIOB|?RCC_APB2Periph_GPIOC?ENABLE）;
????
?
?
??RCC_APB2PeriphClockCmd（ADXL345_SPI_CLK?ENABLE）;
??????????????????????????
??GPIO_StructInit（&GPIO_InitStructure）;
??GPIO_InitStructure.GPIO_Pin?=ADXL345_SPI_CS_PIN?;
??GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
??GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
??GPIO_Init（ADXL345_SPI_CS_GPIO_PORT?&GPIO_InitStructure）;
?
??GPIO_SetBits（ADXL345_SPI_CS_GPIO_PORTADXL345_SPI_CS_PIN）;
?
??GPIO_StructInit（&GPIO_InitStructure）;
??GPIO_InitStructure.GPIO_Pin?=?ADXL345_SPI_SCK_PIN|ADXL345_SPI_MISO_PIN|ADXL345_SPI_MOSI_PIN;
??GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
??GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
??GPIO_Init（ADXL345_SPI_MOSI_GPIO_PORT?&GPIO_InitStructure）;?

???
???SPI_InitStructure.SPI_Direction=SPI_Direction_2Lines_FullDuplex;
???SPI_InitStructure.SPI_Mode=SPI_Mode_Master;
???SPI_InitStructure.SPI_DataSize?=?SPI_DataSize_16b;
???SPI_InitStructure.SPI_CPOL=SPI_CPOL_High;
???SPI_InitStructure.SPI_CPHA=SPI_CPHA_2Edge;
???SPI_InitStructure.SPI_NSS=SPI_NSS_Soft;
???SPI_InitStructure.SPI_BaudRatePrescaler=SPI_BaudRatePrescaler_256;
???SPI_InitStructure.SPI_FirstBit=SPI_FirstBit_MSB;
???SPI_InitStructure.SPI_CRCPolynomial=7;
???SPI_Init（ADXL345_SPI?&SPI_InitStructure）;?

???SPI_Cmd（ADXL345_SPIENABLE）;??
}

void?ADXL345_init（void）
{
????SPI_init（）;???
?
???ADXL345_write_byte（0x1E0x00）;?
???ADXL345_write_byte（0x1F0x00）;?
???ADXL345_write_byte（0x200x00）;?
???ADXL345_write_byte（0x210x00）;??
???ADXL345_write_byte（0x220x00）;??
???ADXL345_write_byte（0x230x00）;??
?
???ADXL345_write_byte（0x240x01）;??
???ADXL345_write_byte（0x250x01）;??
???ADXL345_write_byte（0x260x2B）;??
???ADXL345_write_byte（0x270x00）;??
???ADXL345_write_byte（0x280x09）;??
???ADXL345_write_byte（0x290xFF）;??
???ADXL345_write_byte（0x2A0x80）;??
???//ADXL345_read_byte（0x2B）;????
???ADXL345_write_byte（0x2C0x0F）;?
???ADXL345_write_byte（0x2D0x08）;?
???ADXL345_write_byte（0x2E0x80）;?
???ADXL345_write_byte（0x2F0x00）;
???//ADXL345_read_byte（0x30）;????
???ADXL345_write_byte（0x310X0B）;?
???ADXL345_write_byte（0x380x00）;??
??//ADXL345_read_byte（0x39）;????
?
?}
?
?
?uint8_t?ADXL345_read_byte（uint8_t?add）

{
?????GPIO_ResetBits（ADXL345_SPI_CS_GPIO_PORT?ADXL345_SPI_CS_PIN）;
?????SPI_I2S_SendData（ADXL345_SPI（add|0x80）<<8|0x00）;
?
????while（SPI_I2S_GetFlagStatus（ADXL345_SPISPI_I2S_FLAG_TXE）==RESET）;
???
????while（SPI_I2S_GetFlagStatus（ADXL345_SPI?SPI_I2S_FLAG_RXNE）==RESET）;
???
????GPIO_SetBits（ADXL345_SPI_CS_GPIO_PORT?ADXL345_SPI_CS_PIN）;
???
????return?SPI_I2S_ReceiveData（ADXL345_SPI）&0xff;
?
??}
void?ADXL345_write_byte（uint8_t?adduint8_t?val）

{
?????GPIO_ResetBits（ADXL34

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4111??2019-04-19?09:33??ADXL345\ADXL345.c

?????文件???????5616??2019-04-19?09:33??ADXL345\ADXL345.h

?????目錄??????????0??2019-05-07?10:47??ADXL345

-----------?---------??----------?-----??----

?????????????????9727????????????????????3