PT32L007 与SC7A20H IIC通讯源代码分享

只看该作者 · 2024-3-23 18:54

#define READ_ADDR 0x33
#define DEVICE_ADDR  0x32

u8 arry_write[10]={0x37,0x01,0x40,0x88,0x01,0x2a,0x01,0x00};

void I2C_GPIO_Config(void)
{
/* 配置I2C管脚的复用功能 */
GPIO_DigitalRemapConfig(AFIOB, GPIO_Pin_5, AFIO_AF_0,ENABLE); //PB5 I2C SDA
GPIO_DigitalRemapConfig(AFIOB, GPIO_Pin_4, AFIO_AF_0,ENABLE); //PB4 I2C SCL
}
void I2C_Driver(void)
{
I2C_InitTypeDef I2C_InitStruct;
I2C_InitStruct.I2C_Acknowledge = I2C_Acknowledge_Disable;
I2C_InitStruct.I2C_Broadcast = I2C_Broadcast_Disable;
I2C_InitStruct.I2C_OwnAddress = 0x00;
I2C_InitStruct.I2C_Prescaler = 640-1;
I2C_Init(I2C,&I2C_InitStruct);
}

/**
* @brief IIC写函数
* @param pBuffer：需要写入的数据
* @param WriteAddr：从机地址
* @param NumByteToWrite：需要写入的数据长度
* @retval 无
*/
void I2C_EE_Write(u8 pBuffer, unsigned int WriteAddr, u16 data_size)
{
// int i;
/******************等待从机ready***************/
I2C_GenerateEvent(I2C,I2C_Event_Start,DISABLE);
I2C->CCR |= I2C_CCR_SI | I2C_CCR_ACK;
I2C_Cmd(I2C,DISABLE);
I2C_Cmd(I2C,ENABLE);

I2C_GenerateEvent(I2C,I2C_Event_Start,ENABLE);
while(I2C_GetFlagStatus(I2C,I2C_FLAG_StartOk)!= SET);

I2C_SendAddr(I2C, DEVICE_ADDR);//器件地址，写
while(I2C_GetFlagStatus(I2C,I2C_FLAG_MASGetAckW)!=SET);

I2C_SendData(I2C,WriteAddr);//发送要写的字地址
while(I2C_GetFlagStatus(I2C,I2C_FLAG_MDSGetAck)!=SET);
// for(i=0;i<data_size;i++)
// {
// I2C_SendData(I2C, *(pBuffer++));
// while(I2C_GetFlagStatus(I2C,I2C_FLAG_MDSGetAck) != SET);
// }

I2C_SendData(I2C, pBuffer);
while(I2C_GetFlagStatus(I2C,I2C_FLAG_MDSGetAck) != SET);

/******************发送停止位***************/
I2C_GenerateEvent(I2C,I2C_Event_Stop,ENABLE);
}

//uint8_t I2C_EE_Read(u8* pBuffer,u16 ReadAddr, u16 DeviceAddr, u16 data_size)
uint8_t I2C_EE_Read(u16 ReadAddr)
{
// int i;
uint8_t date = 0 ;
/******************等待从机ready***************/

I2C_GenerateEvent(I2C,I2C_Event_Start,ENABLE);
while(I2C_GetFlagStatus(I2C,I2C_FLAG_StartOk)!= SET);

I2C_SendAddr(I2C, DEVICE_ADDR);//器件地址，写
while(I2C_GetFlagStatus(I2C,I2C_FLAG_MASGetAckW)!=SET);

I2C_SendData(I2C,ReadAddr);//发送要读的页地址
while(I2C_GetFlagStatus(I2C,I2C_FLAG_MDSGetAck)!=SET);
//printf("-----%s  %d----\n", __func__, __LINE__) ;
I2C_GenerateEvent(I2C,I2C_Event_Stop,ENABLE);

/******************接收数据***************/
I2C_GenerateEvent(I2C,I2C_Event_Start,ENABLE);
while(I2C_GetFlagStatus(I2C,I2C_FLAG_StartOk)!= SET);

I2C_SendAddr(I2C, READ_ADDR);//器件地址，读
while(I2C_GetFlagStatus(I2C,I2C_FLAG_MASGetAckR)!=SET);

I2C->CCR=I2C_CCR_ACK|I2C_CCR_SI;//主机发送NACK
while(I2C_GetFlagStatus(I2C,I2C_FLAG_MDGSendNack) != SET);
date = I2C_ReceiveData(I2C);

/******************发送停止位***************/
I2C_GenerateEvent(I2C,I2C_Event_Stop,ENABLE);

return date ;
}

init(void)
{
I2C_EE_Write(arry_write[0], 0x20, 1);Software_Delay(100000) ;
I2C_EE_Write(arry_write[1], 0x21, 1);Software_Delay(100000) ;
I2C_EE_Write(arry_write[2], 0x22, 1);Software_Delay(100000) ;
I2C_EE_Write(arry_write[3], 0x23, 1);Software_Delay(100000) ;
I2C_EE_Write(arry_write[4], 0x1f, 3);Software_Delay(100000) ;
I2C_EE_Write(arry_write[5], 0x30, 1);Software_Delay(100000) ;
I2C_EE_Write(arry_write[6], 0x32, 1);Software_Delay(100000) ;
I2C_EE_Write(arry_write[7], 0x32, 1);Software_Delay(100000) ;
}

只看该作者 · 2024-3-25 13:38

SC7A20H单击的例程

寄存器地址, 设置值,

0x20,0x47,
0x23,0x88, //+-2g
0x21,0x31,
0x22,0x40, //AOI中断on int1
0x25,0x00,
0x24,0x00,
0x30,0x2a, //x,y,z高事件或检测
0x32,0x05, //检测门限: 1-127, 值越小, 灵敏度越高
0x33,0x00,

只看该作者 · 2024-3-25 13:40

震动例程

adxl_i2c_write(0x20,0x37);
adxl_i2c_write(0x21,0x01);
adxl_i2c_write(0x22,0x40);
adxl_i2c_write(0x23,0x88);
adxl_i2c_write(0x1f,0x01);
adxl_i2c_write(0x30,0x2a);
adxl_i2c_write(0x32,0x05);
adxl_i2c_write(0x33,0x00);