本文整理汇总了C++中I2CStart函数的典型用法代码示例。如果您正苦于以下问题：C++ I2CStart函数的具体用法？C++ I2CStart怎么用？C++ I2CStart使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了I2CStart函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ImuRead
void ImuRead(ImuRegisters & r, bool bDoMag)
{
I2CStart( 0x68,false,2);
I2CSend(0x3B);//59
I2CStop(20);
rv=I2CReadBuf(0x68, (PBYTE)&r, 14);
if(bDoMag)
{
I2CStart(MAGADDR,false,2);
I2CSend(0x03);
I2CStop(20);
rv2=I2CReadBuf(MAGADDR, (PBYTE)&r.mx, 6);
I2CStart(MAGADDR,false,2);
I2CSend(0x0A);
I2CSend(0x01);
I2CStop(20);
}
else
{
r.mx=0;
r.my=0;
r.mz=0;
}
}示例2: communications
void communications() {
I2CStart();
I2CPut(0xb0);
I2CPut('U');
I2CStart();
I2CPut(0xb1);
I2CPut('Y');
I2CStop();
}示例3: main
void main()
{
/* Buffer where we will read/write our data */
unsigned char I2CData[] = {0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x09, 0x00};
unsigned char i;
/* Initialize I2C Port */
I2CInit();
/* Send Start condition */
I2CStart();
/* Send DS1307 slave address with write operation */
I2CSend(0xD0);
/* Send subaddress 0x00, we are writing to this location */
I2CSend(0x00);
/* Loop to write 8 bytes */
for (i = 0; i < 8; i++)
{
/* send I2C data one by one */
//I2CSend(I2CInitval[i]);
I2CSend(I2CData[i]);
}
/* Send a stop condition - as transfer finishes */
I2CStop();
/* We will now read data from DS1307 */
/* Reading for a memory based device always starts with a dummy write */
/* Send a start condition */
I2CStart();
/* Send slave address with write */
I2CSend(0xD0);
/* Send address for dummy write operation */
/* this address is actually where we are going to read from */
I2CSend(0x00);
/* Send a repeated start, after a dummy write to start reading */
I2CRestart();
/* send slave address with read bit set */
I2CSend(0xD1);
/* Loop to read 8 bytes from I2C slave */
for (i = 8; i > 0; i--) {
/* read a byte */
I2CData[i] = I2CRead();
/* ACK if its not the last byte to read */
/* if its the last byte then send a NAK */
if (i - 1)
I2CAck();
else
I2CNak();
}
/* Send stop */
I2CStop();
/* end of program */
while(1);
}示例4: WriteReg
void WriteReg(BYTE rg, BYTE val)
{
I2CStart( 0x68,false,2);
I2CSend(rg);
I2CSend(val);
I2CStop(20);
}示例5: i2c_recv
char i2c_recv(char addr, char count)
{
char byteptr, byte_in;
if (I2CStart()) return 1;
i2cError = 0;
byteptr = 0;
byte_in = addr | 0x01;
if (ByteOutI2C(byte_in))
{
if (i2cError == I2CERR_NAK) I2CStop();
return i2cError;
}
while(count)
{
count-=1;
if (count) {
byte_in = I2CByteIn(0);
} else {
byte_in = I2CByteIn(1); /* No ACK during last byte */
}
i2cReceiveBuffer[byteptr] = byte_in;
byteptr++;
}
I2CStop();
return (i2cError ? 1 : 0);
}示例6: I2CSendStop
char I2CSendStop(char addr, char count, char send_stop)
{
char byteptr, byte_out;
if (I2CStart()) return 1;
i2cError = 0;
byte_out = addr & 0xfe; /* Ensure that it's a write address */
count++; /* Include slave address to byte count */
byteptr = 0;
while(count)
{
if (ByteOutI2C(byte_out))
{
if (i2cError == I2CERR_NAK && send_stop) I2CStop();
return i2cError;
}
byte_out = i2cTransmitBuffer[byteptr];
byteptr++;
count--;
}
if (send_stop) I2CStop();
return 0;
}示例7: I2C_startTransfer
BOOL I2C_startTransfer(I2C_MODULE I2C_ID, BOOL restart){
I2C_STATUS status;
// Send the Start (or Restart) signal
if(restart){
if(I2CRepeatStart(I2C_ID) != I2C_SUCCESS){
#ifdef DEBUG
printf("Error: Bus collision during transfer Start at Read\n");
#endif
return FALSE;
}
}
else{
// Wait for the bus to be idle, then start the transfer
while( !I2CBusIsIdle(I2C_ID) );
if(I2CStart(I2C_ID) != I2C_SUCCESS){
#ifdef DEBUG
printf("Error: Bus collision during transfer Start at Write\n");
#endif
return FALSE;
}
}
// Wait for the signal to complete
do{
status = I2CGetStatus(I2C_ID);
}
while (!(status & I2C_START) );
return TRUE;
}示例8: DS2482WriteConfig
unsigned char DS2482WriteConfig(unsigned char config)
{
unsigned char read_config;
I2CStart();
I2CSendAddress(DS2482_I2C_ADDR, I2C_Direction_Transmitter);
I2CWrite(DS2482_CMD_WCFG);
I2CWrite(config | (~config << 4));
I2CRestart();
I2CSendAddress(DS2482_I2C_ADDR, I2C_Direction_Receiver);
I2CNotAck();
I2CStop();
read_config = I2CRead();
// check for failure due to incorrect read back
if (config != read_config)
{
DS2482Reset();
return false;
}
return true;
}示例9: OneWireWriteByte
void OneWireWriteByte(unsigned char sendbyte)
{
unsigned char status;
int poll_count = 0;
I2CStart();
I2CSendAddress(DS2482_I2C_ADDR, I2C_Direction_Transmitter);
I2CWrite(DS2482_CMD_1WWB);
I2CWrite(sendbyte);
I2CRestart();
I2CSendAddress(DS2482_I2C_ADDR, I2C_Direction_Receiver);
I2CAck();
do
{
status = I2CRead();
}
while ((status & DS2482_STATUS_1WB) && (poll_count++ < POLL_LIMIT));
I2CNotAck();
I2CStop();
status = I2CRead();
if (poll_count >= POLL_LIMIT)
DS2482Reset();
}示例10: ks0066Init
void ks0066Init(void)
{
I2CStart(PCF8574_ADDR, I2C_WRITE);
i2cData &= ~PCF8574_BL_LINE;
i2cData &= ~PCF8574_E_LINE;
i2cData &= ~PCF8574_RW_LINE;
i2cData &= ~PCF8574_RS_LINE;
ks0066SetData(KS0066_FUNCTION | KS0066_8BIT); /* Init data */
ks0066WriteStrob();
delay_ms(20);
ks0066WriteStrob();
delay_ms(5);
ks0066WriteStrob();
delay_us(120);
ks0066WriteStrob();
i2cData &= ~PCF8574_RW_LINE;
i2cData &= ~PCF8574_RS_LINE;
ks0066SetData(KS0066_FUNCTION);
ks0066WriteStrob();
I2CStop();
ks0066WriteCommand(KS0066_FUNCTION | KS0066_2LINES);
ks0066WriteCommand(KS0066_DISPLAY | KS0066_DISPAY_ON);
ks0066WriteCommand(KS0066_CLEAR);
delay_ms(2);
ks0066WriteCommand(KS0066_SET_MODE | KS0066_INC_ADDR);
return;
}示例11: TM1651_Init
void TM1651_Init(uint8_t backlight)
{
I2CStart();
I2CWritebyte(0x88| backlight); //显示控制命令，开显示，脉冲宽度为11/16 0x08表示显示0|0x08|0x00
//脉冲宽度 1/16-0b000 2/16-0b001 4/16-0b010 10/16-0b011 12/16-0b101 13/16-0b110 14/16-0b111
I2CStop();
} 示例12: StartTransfer
/****** I2C Driver implementation *******/
static bool StartTransfer(I2C_MODULE i2c_id, bool restart)
{
I2C_STATUS status;
// Send the Start (or Restart) signal
if (restart)
{
I2CRepeatStart(i2c_id);
}
else
{
// Wait for the bus to be idle, then start the transfer
while (!I2CBusIsIdle(i2c_id));
if (I2CStart(i2c_id) != I2C_SUCCESS)
{
//DBPRINTF("Error: Bus collision during transfer Start\n");
return FALSE;
}
}
// Wait for the signal to complete
do
{
status = I2CGetStatus(i2c_id);
} while (!(status & I2C_START));
return TRUE;
}示例13: i2c_Start
//==============================================================================
BOOL i2c_Start(UINT8 restart )
{
I2C_STATUS status;
// Send the Start (or Restart) signal
if(restart)
{
//I2CRepeatStart(EEPROM_I2C_BUS);
I2C1CONbits.RSEN = 1;
}
else
{
// Wait for the bus to be idle, then start the transfer
while( !I2CBusIsIdle(EEPROM_I2C_BUS) );
if(I2CStart(EEPROM_I2C_BUS) != I2C_SUCCESS)
{
DBPRINTF("Error: Bus collision during transfer Start\n");
return FALSE;
}
}
// Wait for the signal to complete
do
{
status = I2CGetStatus(EEPROM_I2C_BUS);
} while ( !(status & I2C_START) );
return TRUE;
}示例14: tda731xSetSpeakers
void tda731xSetSpeakers(void)
{
int8_t spFrontLeft = 0;
int8_t spFrontRight = 0;
int8_t spRearLeft = 0;
int8_t spRearRight = 0;
if (sndPar[MODE_SND_BALANCE].value > 0) {
spFrontLeft -= sndPar[MODE_SND_BALANCE].value;
spRearLeft -= sndPar[MODE_SND_BALANCE].value;
} else {
spFrontRight += sndPar[MODE_SND_BALANCE].value;
spRearRight += sndPar[MODE_SND_BALANCE].value;
}
if (sndPar[MODE_SND_FRONTREAR].value > 0) {
spRearLeft -= sndPar[MODE_SND_FRONTREAR].value;
spRearRight -= sndPar[MODE_SND_FRONTREAR].value;
} else {
spFrontLeft += sndPar[MODE_SND_FRONTREAR].value;
spFrontRight += sndPar[MODE_SND_FRONTREAR].value;
}
I2CStart(TDA731X_I2C_ADDR);
I2CWriteByte(TDA731X_SP_REAR_LEFT | -spRearLeft);
I2CWriteByte(TDA731X_SP_REAR_RIGHT | -spRearRight);
I2CWriteByte(TDA731X_SP_FRONT_LEFT | -spFrontLeft);
I2CWriteByte(TDA731X_SP_FRONT_RIGHT | -spFrontRight);
I2CStop();
return;
}示例15: transaction
/*
Sends a start to begin i2c transaction (with no strings attached)
*/
void sendStart(I2C_MODULE i2c){
while( ! I2CBusIsIdle(i2c));
DelayMs(2); // timing for ADXL345
I2CStart(i2c);
while( ! (I2CGetStatus(i2c) & I2C_START) );
I2CClearStatus(i2c, I2C_START);
}