reading ds1388 I2C

lpcware — Thu, 16 Jun 2016 02:32:14 GMT

Content originally posted in LPCWare by thinkchip on Sat Apr 10 23:18:01 MST 2010
Hi, i trying to read the temperature sensor max6634, the way to read this sensor is
send
start i2c condition
0xD0 //address write
0x00 // register to try to read
restart i2c condition
0xD1
//reading the bytes
stop condition

now, I really dont know how to send only the restart condition with no stop condition like in the function I2CEngine();

this is the function that i wrote

void delay_clean (void){
    uint32_t i;
    
    for ( i = 0; i < 0x200000; i++ );    /* Delay after write */

    for ( i = 0; i < BUFSIZE; i++ )        // zero buffers
        {
            I2CMasterBuffer = 0x00;        
            I2CSlaveBuffer = 0x00;
        }

}

void read_rtc_ds1388(void){
    
    delay_clean();//delay and clean buffer
    I2CWriteLength= 2;
    I2CReadLength= 0;
    
    I2CMasterBuffer[0] = DS1388_RTC_ADDR_W; //0xD1
    I2CMasterBuffer[1] = 0x00;        /* address location to write*/
    I2CStart();
    delay_clean();
    I2CWriteLength= 1;
    I2CReadLength= 9;
    I2CMasterBuffer[2] = DS1388_RTC_ADDR_R;//0xD1
    I2CEngine();
    
}

our maybe works with

void read_rtc_ds1388(void){
    
    delay_clean();//delay and clean buffer
    I2CWriteLength= 2;
    I2CReadLength= 0;
    
    I2CMasterBuffer[0] = DS1388_RTC_ADDR_W; //0xD1
    I2CMasterBuffer[1] = 0x00;        /* address location to write*/
    I2CEngine(); //I dont really sure if send start and stop our only the start condition
    delay_clean();
    I2CWriteLength= 1;
    I2CReadLength= 9;
    I2CMasterBuffer[2] = DS1388_RTC_ADDR_R;//0xD1
    I2CEngine();
    
}

thanks, and I sorry for my english
best regards

Re: reading ds1388 I2C

lpcware — Thu, 16 Jun 2016 02:32:15 GMT

Content originally posted in LPCWare by thinkchip on Sun Apr 11 23:16:52 MST 2010
Hi, any help?? please :(:(

topic Re: reading ds1388 I2C in LPCXpresso IDE

reading ds1388 I2C

Re: reading ds1388 I2C