C++ (Cpp) I2C_DUMMY_DELAY Examples

Programming Language: C++ (Cpp)

Method/Function: I2C_DUMMY_DELAY

Examples at hotexamples.com: 9

C++ (Cpp) I2C_DUMMY_DELAY - 9 examples found. These are the top rated real world C++ (Cpp) examples of I2C_DUMMY_DELAY extracted from open source projects. You can rate examples to help us improve the quality of examples.

Example #1

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File: MT6189.c Project: WayWingsDev/testmywatch

kal_uint8 SerialCommRxByte(kal_uint8 addr, kal_uint8 *data)
{
   kal_int16 i;
   kal_uint16 dataRead=0;
   *data = 0;
   GPIO_WriteIO(1, LE);
   GPIO_InitIO(1,SDA);
   for(i=8; --i>=0;){
      GPIO_WriteIO( 0, SCL);
      GPIO_WriteIO(addr&0x01, SDA);
      GPIO_WriteIO(1, SCL);
      addr >>= 1;
      I2C_DUMMY_DELAY(5);
   }
   GPIO_InitIO(0,SDA);
   GPIO_WriteIO(0, LE);
   for(i=0; i<8; i++){
      GPIO_WriteIO( 0, SCL);
      I2C_DUMMY_DELAY(5);
      GPIO_WriteIO( 1, SCL);
      dataRead = GPIO_ReadIO(SDA);
      *data |= (dataRead << i);
   }
   I2C_DUMMY_DELAY(10);
}

Example #2

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File: MT6189.c Project: WayWingsDev/testmywatch

kal_uint8 SerialCommTxByte(kal_uint8 addr, kal_uint8 data)
{
   kal_int16 i;
   GPIO_WriteIO(1, LE);
   GPIO_InitIO(1,SDA);
   for(i=8; --i>=0;){
      GPIO_WriteIO( 0, SCL);
      GPIO_WriteIO(data&0x01, SDA);
      data >>= 1;
      I2C_DUMMY_DELAY(5);
      GPIO_WriteIO( 1, SCL);
      I2C_DUMMY_DELAY(5);
   }
   for(i=8; --i>=0;){
      GPIO_WriteIO( 0, SCL);
      GPIO_WriteIO(addr&0x01, SDA);
      addr >>= 1;
      I2C_DUMMY_DELAY(5);
      GPIO_WriteIO( 1, SCL);
      I2C_DUMMY_DELAY(5);
   }
   GPIO_InitIO(0,SDA);
   GPIO_WriteIO(0, LE);
   I2C_DUMMY_DELAY(10);
}

Example #3

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/* Stop sequence of I2C

   SDA       ¢z¢w¢w
       ¢w¢w¢w¢}
   SCL     ¢z¢w¢w¢w
       ¢w¢w¢}
*/
void SerialCommStop(void)
{
    GPIO_InitIO(OUTPUT,SDA);
    GPIO_WriteIO(0,SCL);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO(0,SDA);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO(1,SCL);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO(1,SDA);
    I2C_DUMMY_DELAY(I2C_DELAY);
}

Example #4

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/* Start sequence of I2C

   SDA ¢w¢w¢{
           ¢|¢w¢w
   SCL ¢w¢w¢w¢{
             ¢|¢w¢w
*/
void SerialCommStart(void) /* Prepare the SDA and SCL for sending/receiving */
{
    GPIO_InitIO(OUTPUT,SDA);
    GPIO_WriteIO(1,SDA);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO(1,SCL);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO(0,SDA);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO(0,SCL);
    I2C_DUMMY_DELAY(I2C_DELAY);
}

Example #5

Show file

File: MT6189.c Project: WayWingsDev/testmywatch

void SerialCommRxByte(kal_uint8 *data, kal_uint8 ack)
{
   kal_int16 i;
   kal_uint32 dataCache;
   dataCache = 0;
   GPIO_InitIO(0,SDA);
   for(i=8; --i>=0;){
      dataCache <<= 1;
      GPIO_WriteIO(1, SCL);
      I2C_DUMMY_DELAY(5);
      dataCache |= GPIO_ReadIO(SDA);
      GPIO_WriteIO(0, SCL);
      I2C_DUMMY_DELAY(5);
   }
   GPIO_InitIO(1,SDA);
   GPIO_WriteIO(ack, SDA);
   I2C_DUMMY_DELAY(5);
   GPIO_WriteIO(1, SCL);
   *data = (kal_uint8)dataCache;
   GPIO_WriteIO(0, SCL);
}

Example #6

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unsigned int SerialCommTxByte(unsigned char data) /* return 0 --> ack */
{
    int i, ack;
    
    GPIO_InitIO(OUTPUT,SDA);

    for(i=8; --i>0;){
        GPIO_WriteIO((data>>i)&0x01, SDA);
        I2C_DUMMY_DELAY(I2C_DELAY);
        GPIO_WriteIO( 1, SCL); /* high */
        I2C_DUMMY_DELAY(I2C_DELAY);
        GPIO_WriteIO( 0, SCL); /* low */
        I2C_DUMMY_DELAY(I2C_DELAY);
    }
    GPIO_WriteIO((data>>i)&0x01, SDA);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO( 1, SCL); /* high */
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO( 0, SCL); /* low */
    I2C_DUMMY_DELAY(I2C_DELAY);
    
    GPIO_WriteIO(0, SDA);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_InitIO(INPUT,SDA);
    I2C_DUMMY_DELAY(I2C_DELAY);
    GPIO_WriteIO(1, SCL);
    I2C_DUMMY_DELAY(I2C_DELAY);
    ack = GPIO_ReadIO(SDA); /// ack 1: error , 0:ok
    GPIO_WriteIO(0, SCL);
    I2C_DUMMY_DELAY(I2C_DELAY);
    
    if(ack==1)
        return 0;
    else
        return 1;  
}

Example #7

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void GPIO_InitIO(unsigned int dir, unsigned int pin)
{  
    unsigned int no,remainder;
    no = pin >>4;
    remainder = pin & 0xf;

    if (dir == OUTPUT)
    {   
        DRV_WriteReg16(GPIO_PULLEN_SET(no),(1 << remainder));
        DRV_WriteReg16(GPIO_DIR_SET(no),(1 << remainder));
    }
    else
    {   
        DRV_WriteReg16(GPIO_PULLEN_CLR(no),(1 << remainder));
        DRV_WriteReg16(GPIO_DIR_CLR(no),(1 << remainder));
    }
    I2C_DUMMY_DELAY(100);
}

Example #8

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void SerialCommRxByte(unsigned  char *data, unsigned char ack)
{
   int i;
   unsigned int dataCache;
   dataCache = 0;
   GPIO_InitIO(INPUT,SDA);
   for(i=8; --i>=0;){
      dataCache <<= 1;
      I2C_DUMMY_DELAY(I2C_DELAY);
      GPIO_WriteIO(1, SCL);
      I2C_DUMMY_DELAY(I2C_DELAY);
      dataCache |= GPIO_ReadIO(SDA);
      GPIO_WriteIO(0, SCL);
      I2C_DUMMY_DELAY(I2C_DELAY);
   }
   GPIO_InitIO(OUTPUT,SDA);
   GPIO_WriteIO(ack, SDA);
   I2C_DUMMY_DELAY(I2C_DELAY);
   GPIO_WriteIO(1, SCL);
   I2C_DUMMY_DELAY(I2C_DELAY);
   GPIO_WriteIO(0, SCL);
   I2C_DUMMY_DELAY(I2C_DELAY);
   *data = (unsigned char)dataCache;
}

Example #9

Show file

File: MT6189.c Project: WayWingsDev/testmywatch

kal_uint8 SerialCommTxByte(kal_uint8 data) /* return 0 --> ack */
{
   kal_int16 i, ack;
   GPIO_InitIO(1,SDA);
   for(i=8; --i>0;){
      GPIO_WriteIO((data>>i)&0x01, SDA);
      I2C_DUMMY_DELAY(5);
      GPIO_WriteIO( 1, SCL); /* high */
      I2C_DUMMY_DELAY(5);
      GPIO_WriteIO( 0, SCL); /* low */
      I2C_DUMMY_DELAY(5);
   }
   GPIO_WriteIO((data>>i)&0x01, SDA);
   I2C_DUMMY_DELAY(5);
   GPIO_WriteIO( 1, SCL); /* high */
   I2C_DUMMY_DELAY(5);
   GPIO_WriteIO( 0, SCL); /* low */

   GPIO_InitIO(0,SDA);
   GPIO_WriteIO(1, SCL);
   I2C_DUMMY_DELAY(5);
   ack = GPIO_ReadIO(SDA); /// ack
   GPIO_WriteIO(0, SCL);
}