bool i2cWriteBuffer(uint8_t addr, uint8_t reg, uint8_t len, uint8_t * data)
{
int i;
if (!I2C_Start())
return false;
I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
if (!I2C_WaitAck())
{
I2C_Stop();
return false;
}
I2C_SendByte(reg);
I2C_WaitAck();
for (i = 0; i < len; i++)
{
I2C_SendByte(data[i]);
if (!I2C_WaitAck())
{
I2C_Stop();
return false;
}
}
I2C_Stop();
return true;
}
/**
* @brief I2C write mutiple data
* @param[in] instance instance of i2c moudle
* \param[in] chipAddr i2c slave addr
* \param[in] addr i2c slave register offset
* \param[in] addrLen len of slave register addr(in byte)
* \param[in] buf data buf
* \param[in] len data length
* \retval 0 success
* \retval 1 failure
*/
int I2C_BurstWrite(uint32_t instance ,uint8_t chipAddr, uint32_t addr, uint32_t addrLen, uint8_t *buf, uint32_t len)
{
uint8_t *p;
uint8_t err;
p = (uint8_t*)&addr;
err = 0;
chipAddr <<= 1;
I2C_Start();
I2C_SendByte(chipAddr);
err += I2C_WaitAck();
while(addrLen--)
{
I2C_SendByte(*p++);
err += I2C_WaitAck();
}
while(len--)
{
I2C_SendByte(*buf++);
err += I2C_WaitAck();
}
I2C_Stop();
return err;
}
int I2C_SW::read_regs(uint8_t SlaveAddress, uint8_t startRegister, uint8_t*out, int count)
{
int i;
if (!I2C_Start()) {
return -1;
}
I2C_SendByte(SlaveAddress&0xFE);
if (!I2C_WaitAck()) {
I2C_Stop();
return -1;
}
I2C_SendByte(startRegister);
I2C_WaitAck();
I2C_Start();
I2C_SendByte((SlaveAddress&0xFE)|0x01);
I2C_WaitAck();
for(i=0; i<count; i++)
{
out[i] = I2C_ReceiveByte();
if (i==count-1)
I2C_SendNoAck();
else
I2C_SendAck();
}
I2C_Stop();
return 0;
}
bool i2cRead(uint8_t addr, uint8_t reg, uint8_t len, uint8_t *buf)
{
if (!I2C_Start())
return false;
I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
if (!I2C_WaitAck()) {
I2C_Stop();
return false;
}
I2C_SendByte(reg);
I2C_WaitAck();
I2C_Start();
I2C_SendByte(addr << 1 | I2C_Direction_Receiver);
I2C_WaitAck();
while (len) {
*buf = I2C_ReceiveByte();
if (len == 1)
I2C_NoAck();
else
I2C_Ack();
buf++;
len--;
}
I2C_Stop();
return true;
}
bool i2cRead(I2CDevice device, uint8_t addr, uint8_t reg, uint8_t len, uint8_t *buf)
{
UNUSED(device);
if (!I2C_Start()) {
return false;
}
I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
if (!I2C_WaitAck()) {
I2C_Stop();
i2cErrorCount++;
return false;
}
I2C_SendByte(reg);
I2C_WaitAck();
I2C_Start();
I2C_SendByte(addr << 1 | I2C_Direction_Receiver);
I2C_WaitAck();
while (len) {
*buf = I2C_ReceiveByte();
if (len == 1) {
I2C_NoAck();
}
else {
I2C_Ack();
}
buf++;
len--;
}
I2C_Stop();
return true;
}
int I2C_SW::write_regs(uint8_t SlaveAddress, uint8_t startRegister, const uint8_t*data, int count)
{
int i;
if (!I2C_Start()) {
return -1;
}
I2C_SendByte(SlaveAddress&0xFE);
if (!I2C_WaitAck()) {
I2C_Stop();
return -1;
}
I2C_SendByte(startRegister&0xFF);
I2C_WaitAck();
for(i=0; i<count; i++)
{
I2C_SendByte(data[i]&0xFF);
if (!I2C_WaitAck())
{
I2C_Stop();
return -1;
}
}
I2C_Stop();
return 0;
}
bool i2cWriteBuffer(I2CDevice device, uint8_t addr, uint8_t reg, uint8_t len, uint8_t * data)
{
UNUSED(device);
int i;
if (!I2C_Start()) {
i2cErrorCount++;
return false;
}
I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
if (!I2C_WaitAck()) {
I2C_Stop();
return false;
}
I2C_SendByte(reg);
I2C_WaitAck();
for (i = 0; i < len; i++) {
I2C_SendByte(data[i]);
if (!I2C_WaitAck()) {
I2C_Stop();
i2cErrorCount++;
return false;
}
}
I2C_Stop();
return true;
}
int SCCB_ReadSingleRegister(uint32_t instance, uint8_t chipAddr, uint8_t subAddr, uint8_t* pData)
{
uint32_t time_out = 0;
I2C_GenerateSTART(instance);
/* Send 7bit Data with WRITE operation */
I2C_Send7bitAddress(instance, chipAddr, kI2C_Write);
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance) && (time_out < 10000))
{
time_out++;
}
return 1;
}
/* send reg address */
I2C_SendData(instance, subAddr);
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance) && (time_out < 10000))
{
time_out++;
}
return 2;
}
I2C_GenerateSTOP(instance);
while(!I2C_IsBusy(instance));
time_out = 0;
/* generate START signal */
I2C_GenerateSTART(instance);
/* resend 7bit Address, This time we use READ Command */
I2C_Send7bitAddress(instance, chipAddr, kI2C_Read);
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance));
return 3;
}
/* set master in slave mode */
I2C_SetMasterMode(instance,kI2C_Read);
/* dummy read */
I2C_ReadData(instance);
I2C_GenerateAck(instance);
I2C_WaitAck(instance);
*pData = I2C_ReadData(instance);
/* stop and finish */
I2C_GenerateNAck(instance);
I2C_WaitAck(instance);
I2C_GenerateSTOP(instance);
while(!I2C_IsBusy(instance));
return 0;
}
Status TMP102_Init(void)//初始化TMP102
{
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send start------------------1
if(I2C_Start()!=BUS_READY){
ERROR_MACRO(TMP102_DEV,INT_ERROR_SEND_START);
return ERROR_FAILED;
}
//send SlaveADDR with write
I2C_SendByte(TMP102_WRITE_ADDR);//------------------2
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,INT_ERROR_SEND_DEVADDR);//------------------3
return ERROR_FAILED;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send CONF_ADDR------------------4
I2C_SendByte(TMP102_CONF_REG);
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,INT_ERROR_SEND_CONFADDR);//------------------5
return ERROR_FAILED;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//写Configuration Register 12位温度 连续转换//------------------6
I2C_SendByte(0x60);
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,INT_ERROR_WRITE_CONFA);//------------------7
return ERROR_FAILED;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
I2C_SendByte(TMP102_8HZ);//------------------8
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,INT_ERROR_WRITE_CONFB);//------------------9
return ERROR_FAILED;
}
//send stop
I2C_Stop();//------------------10
return OK_PASS;
}
/**
* @brief 设置i2c在主模式下的连续数据写操作
* @code
* //使用i2c的1模块将data中的10字节数据写入地址为0x55的从机中起始地址为0x01的设备宏
* I2C_BurstWrite(HW_I2C1, 0x55, 0x01, 1, &data, 10);
* @endcode
* @param instance :I2C模块号
* @arg HW_I2C0 :I2C0模块
* @arg HW_I2C1 :I2C1模块
* @arg HW_I2C2 :I2C2模块
* @param deviceAddress :从机设备地址0~127
* @param subAddress :写入的起始地址
* @param subAddressLen :地址的长度
* @param buf :保存数据的首地址
* @param len :写入数据的长度
* @retval 数据的读取状态 0 ;成功 其它 :失败
*/
uint8_t I2C_BurstWrite(uint32_t instance ,uint8_t deviceAddress, uint32_t subAddress, uint32_t subAddressLen, uint8_t *buf, uint32_t len)
{
uint32_t time_out = 0;
uint8_t * p = (uint8_t*)&subAddress;
/* generate START signal */
I2C_GenerateSTART(instance);
/* send 7bit Data with WRITE operation */
I2C_Send7bitAddress(instance, deviceAddress, kI2C_Write);
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance) && (time_out < 10000))
{
time_out++;
}
return 1;
}
/* send all address */
while(subAddressLen--)
{
I2C_SendData(instance, *(p++));
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance) && (time_out < 10000))
{
time_out++;
}
return 2;
}
}
/* send all data */
while(len--)
{
I2C_SendData(instance, *(buf++));
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance) && (time_out < 10000))
{
time_out++;
}
return 3;
}
}
/* generate stop and wait for line idle */
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance));
return 0;
}
/********************单字节写入***********************/
uint8_t MPU6050_WriteByte(uint8_t SlaveAddress,uint8_t REG_Address,uint8_t REG_data)
{
if(!I2C_Start())return 0;
I2C_SendByte(SlaveAddress); //发送设备地址+写信号//I2C_SendByte(((REG_Address & 0x0700) >>7) | SlaveAddress & 0xFFFE);//设置高起始地址+器件地址
if(!I2C_WaitAck()){I2C_Stop(); return 0;}
I2C_SendByte(REG_Address ); //设置低起始地址
if(!I2C_WaitAck()){I2C_Stop(); return 0;}//I2C_WaitAck();
I2C_SendByte(REG_data);
if(!I2C_WaitAck()){I2C_Stop(); return 0;}//I2C_WaitAck();
I2C_Stop();
return 1;
}
uint16_t Single_Write(unsigned char SlaveAddress,unsigned char REG_Address,unsigned char REG_data) //void
{
if(!I2C_Start())return FALSE;
I2C_SendByte(SlaveAddress); //发送设备地址+写信号//I2C_SendByte(((REG_Address & 0x0700) >>7) | SlaveAddress & 0xFFFE);//设置高起始地址+器件地址
if(!I2C_WaitAck()){I2C_Stop(); return FALSE;}
I2C_SendByte(REG_Address ); //设置低起始地址
I2C_WaitAck();
I2C_SendByte(REG_data);
I2C_WaitAck();
I2C_Stop();
delay5ms();
return TRUE;
}
bool Single_Write(unsigned char SlaveAddress,unsigned char REG_Address,unsigned char REG_data) //void
{
if(!I2C_Start())return FALSE;
I2C_SendByte(SlaveAddress); //发送设备地址+写信号
if(!I2C_WaitAck()){I2C_Stop(); return FALSE;}
I2C_SendByte(REG_Address ); //设置低起始地址
I2C_WaitAck();
I2C_SendByte(REG_data);
I2C_WaitAck();
I2C_Stop();
delay5ms();
return TRUE;
}
bool i2cWrite(uint8_t addr, uint8_t reg, uint8_t data)
{
if (!I2C_Start())
return false;
I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
if (!I2C_WaitAck()) {
I2C_Stop();
return false;
}
I2C_SendByte(reg);
I2C_WaitAck();
I2C_SendByte(data);
I2C_WaitAck();
I2C_Stop();
return true;
}
/***********************************************************
* Function: // 函数名称
* Description: // 函数功能、性能等的描述
* Input: // 1.输入参数1，说明，包括每个参数的作用、取值说明及参数间关系
* Input: // 2.输入参数2，说明，包括每个参数的作用、取值说明及参数间关系
* Output: // 1.输出参数1，说明
* Return: // 函数返回值的说明
* Others: // 其它说明
***********************************************************/
static uint8_t IIC_RegRead( uint8_t address, uint8_t reg, uint8_t *value )
{
uint8_t err = ERR_NONE;
err = I2C_Start( );
if( err )
{
goto lbl_ERR_REG_RD_STOP;
}
I2C_SendByte( address << 1 );
err = I2C_WaitAck( );
if( err )
{
goto lbl_ERR_REG_RD_STOP;
}
I2C_SendByte( reg );
err = I2C_WaitAck( );
if( err )
{
goto lbl_ERR_REG_RD_STOP;
}
err = I2C_Start( );
if( err )
{
goto lbl_ERR_REG_RD;
}
I2C_SendByte( ( address << 1 ) | 0x01 );
err = I2C_WaitAck( );
if( err )
{
goto lbl_ERR_REG_RD_STOP;
}
*value = I2C_ReceiveByte( );
I2C_NoAck( );
I2C_Stop( );
return ERR_NONE;
lbl_ERR_REG_RD_STOP:
I2C_Stop( );
lbl_ERR_REG_RD:
//rt_kprintf( "reg_rd error=%02x reg=%02x\r\n", err, reg );
return err;
}
void WriteI2C(u8 ch, u8 address, u8 WriteAddress)
{
I2C_Start(); // 启动总线，开始传输数据;
I2C_SendByte(WriteAddress); I2C_WaitAck();
//while(TestAck()); // 发送从器件硬件地址;
I2C_SendByte(address); I2C_WaitAck();
//while(TestAck()); // 发送从器件存储器字节地址;
I2C_SendByte(ch); I2C_WaitAck();
//while(TestAck()); // 发送数据;
#if ENABLE_I2C_DELAY
I2C_delay();
#endif
I2C_Stop(); // 发送停止位，发送数据结束;
#if ENABLE_I2C_DELAY
I2C_delay();
#endif
}
Status HAL_I2C_WaitAck(void) //返回为:=1有ACK,=0无ACK
{
#ifdef USE_I2C_OLD
return I2C_WaitAck()
#else
return IIC_Wait_Ack();
#endif
}
/******************************************************************************
/ 函数功能:单字节写入
/ 修改日期:none
/ 输入参数:
/ @arg SlaveAddress 从器件地址
/ @arg REG_Address 寄存器地址
/ 输出参数: 读出的字节数据
/ 使用说明:这时一个完整的单字节读取函数
******************************************************************************/
uint8_t Single_Read(uint8_t SlaveAddress,uint8_t REG_Address)
{
uint8_t REG_data;
I2C_Start();//if(!I2C_Start())return 0
I2C_SendByte(SlaveAddress); //I2C_SendByte(((REG_Address & 0x0700) >>7) | REG_Address & 0xFFFE);//设置高起始地址+器件地址
I2C_WaitAck();//if(!I2C_WaitAck()){I2C_Stop();return 0;}
I2C_SendByte((uint8_t) REG_Address); //设置低起始地址
I2C_WaitAck();//if(!I2C_WaitAck()){I2C_Stop();return 0;}
I2C_Start();//if(!I2C_Start())return 0;
I2C_SendByte(SlaveAddress+1);
I2C_WaitAck();//if(!I2C_Start())return 0;
REG_data = I2C_ReadByte();
I2C_NoAck();
I2C_Stop();
return REG_data;
}
//单字节读取*****************************************
unsigned char Single_Read(unsigned char SlaveAddress,unsigned char REG_Address)
{ unsigned char REG_data;
if(!I2C_Start())return FALSE;
I2C_SendByte(SlaveAddress); //I2C_SendByte(((REG_Address & 0x0700) >>7) | REG_Address & 0xFFFE);//设置高起始地址+器件地址
if(!I2C_WaitAck()){I2C_Stop(); return FALSE;}
I2C_SendByte((u8) REG_Address); //设置低起始地址
I2C_WaitAck();
I2C_Start();
I2C_SendByte(SlaveAddress+1);
I2C_WaitAck();
REG_data= I2C_ReadByte();
I2C_NoAck();
I2C_Stop();
return REG_data;
}
/***********************单字节读取******************/
uint8_t MPU6050_ReadByte(uint8_t SlaveAddress,uint8_t REG_Address)
{
unsigned char REG_data;
I2C_Start();//if(!I2C_Start())return 0
I2C_SendByte(SlaveAddress); //I2C_SendByte(((REG_Address & 0x0700) >>7) | REG_Address & 0xFFFE);//设置高起始地址+器件地址
I2C_WaitAck();//if(!I2C_WaitAck()){I2C_Stop();test=1; return 0;}
I2C_SendByte((uint8_t) REG_Address); //设置低起始地址
I2C_WaitAck(); //if(!I2C_WaitAck()){I2C_Stop(); return 0;}
I2C_Start();//if(!I2C_Start())return 0;
I2C_SendByte(SlaveAddress+1);
I2C_WaitAck();//if(!I2C_WaitAck()){I2C_Stop(); return 0;}
REG_data= I2C_ReadByte();
I2C_NoAck();
I2C_Stop();
return REG_data;
}
u8 ReadI2C(u8 address, u8 WriteAddress) // 读出1串数据
{
u8 ch; // 定义存储读出数据的临时变量;
I2C_Start(); // 启动总线，开始传输数据;
I2C_SendByte(WriteAddress);
I2C_WaitAck(); // 发送从器件硬件地址;
I2C_SendByte(address);
I2C_WaitAck(); // 发送从器件内部数据存储器的地址;
I2C_Start(); // 重新启动总线，开始传输数据;
I2C_SendByte(WriteAddress + 1);
I2C_WaitAck(); // 发送从器件内部数据存储器的地址;
ch = I2C_ReceiveByte();
I2C_NoAck(); // 将读出的一个字节数据存入临时变量，发送非应答位;
I2C_Stop(); // 发送停止信号，释放总路线;
return (ch);
}
/*******************************************************************************
* Function Name : I2C_ReadByte
* Description : 读取一串数据
* Input : - pBuffer: 存放读出数据
* - length: 待读出长度
* - ReadAddress: 待读出地址
* - DeviceAddress: 器件类型
* Output : None
* Return : 返回为:=1成功读入,=0失败
* Attention : None
*******************************************************************************/
int I2C_ReadByte(uint8_t* pBuffer, uint16_t length, uint8_t ReadAddress, uint8_t DeviceAddress)
{
if(!I2C_Start())
{
return DISABLE;
}
I2C_SendByte( DeviceAddress ); /* 器件地址 */
if( !I2C_WaitAck() )
{
I2C_Stop();
return DISABLE;
}
I2C_SendByte( ReadAddress ); /* 设置低起始地址 */
I2C_WaitAck();
I2C_Stop();
if(!I2C_Start())
{
return DISABLE;
}
I2C_SendByte( DeviceAddress + 1 ); /* 器件地址 */
if(!I2C_WaitAck())
{
I2C_Stop();
return DISABLE;
}
while(length)
{
*pBuffer = I2C_ReceiveByte();
if(length == 1)
{
I2C_NoAck();
}
else
{
I2C_Ack();
}
pBuffer++;
length--;
}
I2C_Stop();
return ENABLE;
}
bool i2cWrite(I2CDevice device, uint8_t addr, uint8_t reg, uint8_t data)
{
UNUSED(device);
if (!I2C_Start()) {
return false;
}
I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
if (!I2C_WaitAck()) {
I2C_Stop();
i2cErrorCount++;
return false;
}
I2C_SendByte(reg);
I2C_WaitAck();
I2C_SendByte(data);
I2C_WaitAck();
I2C_Stop();
return true;
}
/**
* @brief proble i2c bus
* @param[in] instance instance of i2c moudle
* \param[in] chipAddr i2c slave addr
* @note see if it's available i2c slave on the bus
* \retval 0 success
* \retval 1 failure
*/
int I2C_Probe(uint32_t instance, uint8_t chipAddr)
{
uint8_t err;
err = 0;
chipAddr <<= 1;
I2C_Start();
I2C_SendByte(chipAddr);
err = I2C_WaitAck();
I2C_Stop();
return err;
}
/***********************************************************
* Function: // 函数名称
* Description: // 函数功能、性能等的描述
* Input: // 1.输入参数1，说明，包括每个参数的作用、取值说明及参数间关系
* Input: // 2.输入参数2，说明，包括每个参数的作用、取值说明及参数间关系
* Output: // 1.输出参数1，说明
* Return: // 函数返回值的说明
* Others: // 其它说明
***********************************************************/
static uint8_t IIC_RegWrite( uint8_t address, uint8_t reg, uint8_t val )
{
uint8_t err = ERR_NONE;
err = I2C_Start( );
if( err )
{
goto lbl_ERR_REG_WR;
}
I2C_SendByte( MMA845X_ADDR << 1 );
err = I2C_WaitAck( );
if( err )
{
goto lbl_ERR_REG_WR_STOP;
}
I2C_SendByte( reg );
err = I2C_WaitAck( );
if( err )
{
goto lbl_ERR_REG_WR_STOP;
}
I2C_SendByte( val );
err = I2C_WaitAck( );
if( err )
{
goto lbl_ERR_REG_WR_STOP;
}
I2C_Stop( );
//todo:这里需要延时5ms吗?
return ERR_NONE;
lbl_ERR_REG_WR_STOP:
I2C_Stop( );
lbl_ERR_REG_WR:
//rt_kprintf( "reg_wr error=%02x reg=%02x value=%02x\r\n", err, reg, val );
return err;
}
/*******************************************************************************
* Function Name : I2C_WriteByte
* Description : 写一字节数据
* Input : - WriteAddress: 待写入地址
* - SendByte: 待写入数据
* - DeviceAddress: 器件类型
* Output : None
* Return : 返回为:=1成功写入,=0失败
* Attention : None
*******************************************************************************/
int I2C_WriteByte( uint16_t WriteAddress , uint8_t SendByte , uint8_t DeviceAddress)
{
if(!I2C_Start())
{
return DISABLE;
}
I2C_delay();
I2C_SendByte( DeviceAddress ); /* 器件地址 */
if( !I2C_WaitAck() )
{
I2C_Stop();
return DISABLE;
}
I2C_delay();
I2C_SendByte((uint8_t)(WriteAddress & 0x00FF)); /* 设置低起始地址 */
I2C_WaitAck();
I2C_delay();
I2C_SendByte(SendByte);
I2C_WaitAck();
I2C_delay();
I2C_Stop();
I2C_delay();
return ENABLE;
}
/**
* @brief SCCB(protocol,the same as i2c) read single register value
* \param[in] instance instance of i2c moudle
* \param[in] chipAddr i2c slave addr
* \param[in] addr i2c slave register offset
* \param[out] data data pointer
* @note usually used on i2c sensor devices
* \retval 0 success
* \retval 1 failure
*/
int SCCB_ReadSingleRegister(uint32_t instance, uint8_t chipAddr, uint8_t addr, uint8_t* data)
{
uint8_t err;
uint8_t retry;
retry = 10;
chipAddr <<= 1;
while(retry--)
{
err = 0;
I2C_Start();
I2C_SendByte(chipAddr);
err += I2C_WaitAck();
I2C_SendByte(addr);
err += I2C_WaitAck();
I2C_Stop();
I2C_Start();
I2C_SendByte(chipAddr+1);
err += I2C_WaitAck();
*data = I2C_GetByte();
// err += I2C_WaitAck();
I2C_NAck();
I2C_Stop();
if(!err)
{
break;
}
}
return err;
}
/**
* @brief 设置i2c在主模式下的连续数据读操作
* @code
* //使用i2c的1模块读取数据地址为0x55的从机中起始地址为0x01的数据10字节,存储在data的首地址
* I2C_BurstRead(HW_I2C1, 0x55, 0x01, 1, &data, 10);
* @endcode
* @param instance :I2C模块号
* @arg HW_I2C0 :I2C0模块
* @arg HW_I2C1 :I2C1模块
* @arg HW_I2C2 :I2C2模块
* @param deviceAddress :从机设备地址0~127
* @param subAddress :读取的起始地址
* @param subAddressLen :地址的长度
* @param buf :保存数据的首地址
* @param len :读取数据的长度
* @retval 数据的读取状态 0 ;成功 其它 :失败
*/
int32_t I2C_BurstRead(uint32_t instance, uint8_t deviceAddress, uint32_t subAddress, uint32_t subAddressLen, uint8_t* buf, uint32_t len)
{
uint32_t time_out = 0;
uint8_t i;
uint8_t * p = (uint8_t*)&subAddress;
/* generate START signal */
I2C_GenerateSTART(instance);
/* Send 7bit Data with WRITE operation */
I2C_Send7bitAddress(instance, deviceAddress, kI2C_Write);
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance) && (time_out < 10000))
{
time_out++;
}
return 1;
}
/* if len = 0 then return */
if(!len)
{
I2C_GenerateSTOP(instance);
while(!I2C_IsBusy(instance));
return 0;
}
/* send sub address */
for(i = 0; i < subAddressLen; i++)
{
/* send reg address */
I2C_SendData(instance, *p++);
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance) && (time_out < 10000))
{
time_out++;
}
return 2;
}
}
/* generate RESTART signal */
I2C_GenerateRESTART(instance);
/* resend 7bit Address, This time we use READ Command */
I2C_Send7bitAddress(instance, deviceAddress, kI2C_Read);
if(I2C_WaitAck(instance))
{
I2C_GenerateSTOP(instance);
time_out = 0;
while(!I2C_IsBusy(instance));
return 3;
}
/* set master in slave mode */
I2C_SetMasterMode(instance,kI2C_Read);
/* dummy read */
I2C_ReadData(instance); //dummy read
I2C_GenerateAck(instance);
I2C_WaitAck(instance);
/* actually read */
for(i = 0; i < len - 1; i++)
{
*(buf++) = I2C_ReadData(instance);
I2C_GenerateAck(instance);
I2C_WaitAck(instance);
}
/* read last */
*buf = I2C_ReadData(instance);
/* stop and finish */
I2C_GenerateNAck(instance);
I2C_WaitAck(instance);
I2C_GenerateSTOP(instance);
while(!I2C_IsBusy(instance));
return 0;
}
Status ReadTMP102(u16 *TO_EEPROM,u16 *Data_ptr)//读取tmp101的2个字节温度
{
u16 TMP102_Data=0x0000;
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send start------------------1
if(I2C_Start()!=BUS_READY){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_START);
return ERROR_FAILED;
}
//send SlaveADDR with write
I2C_SendByte(TMP102_WRITE_ADDR);//------------------2
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_DEVADDR);//------------------3
return ERROR_FAILED;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send CONF_ADDR------------------4
I2C_SendByte(TMP102_TEMP_REG);
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_TEMPADDR);//------------------5
return ERROR_FAILED;
}
I2C_Stop();//------------------NiMa没看到!!!!!!!!!!!!!!
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send start------------------6
if(I2C_Start()!=BUS_READY){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RESTART);
return ERROR_FAILED;
}
//send SlaveADDR with write
I2C_SendByte(TMP102_READ_ADDR);//------------------7
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RDEVADDR);//------------------8
return ERROR_FAILED;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//read TEMP
TMP102_Data=0x0000;
TMP102_Data = I2C_ReceiveByte();//--Byte1-------9
I2C_Ack();//------------------10
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 5 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
TMP102_Data<<=8;
TMP102_Data |= I2C_ReceiveByte();//---Byte2-----11
I2C_Ack();//------------------12
//send stop
I2C_Stop();//------------------13
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Done ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
TMP102_Data>>=4;
*Data_ptr = TMP102_Data;
//==============================================================
//-25~80
if(TMP102_Data&(0x800)){
//负数要转换
TMP102_Data-=(0x0E70-0x0500-1);
}
if(TMP102_Data<=0x690){
*TO_EEPROM = TMP102_Data*4;
}
else{
printf("Out of range from TMP102,TMP102=%X\t\r\n",*Data_ptr);
*TO_EEPROM = TO_EEPROM_ERROR;
}
//printf("TMP102=%X\tEEPROM=%X\r\n",*Data_ptr,*TO_EEPROM);
return OK_PASS;
}
u16 ReadTMP102_REG(unsigned char reg)
{
u16 TMP102_Data=0x0000;
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send start------------------1
if(I2C_Start()!=BUS_READY){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_START);
}
//send SlaveADDR with write
I2C_SendByte(TMP102_WRITE_ADDR);//------------------2
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_DEVADDR);//------------------3
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send CONF_ADDR------------------4
I2C_SendByte(reg);
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_TEMPADDR);//------------------5
}
I2C_Stop();//------------------NiMa没看到!!!!!!!!!!!!!!
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//send start------------------6
if(I2C_Start()!=BUS_READY){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RESTART);
return ERROR_FAILED;
}
//send SlaveADDR with write
I2C_SendByte(TMP102_READ_ADDR);//------------------7
if(I2C_WaitAck()!=BUS_ACK){
ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RDEVADDR);//------------------8
return ERROR_FAILED;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 5 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
//read TEMP
TMP102_Data=0x0000;
TMP102_Data = I2C_ReceiveByte();//--Byte1-------9
I2C_Ack();//------------------10
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Frame 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
TMP102_Data=(TMP102_Data<<8);
TMP102_Data |=(u8)I2C_ReceiveByte();//---Byte2-----11
I2C_Ack();//------------------12
//send stop
I2C_Stop();//------------------13
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~ Done ~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
return TMP102_Data;
}