i2c on MK10DX128VLH7

hipsel — Fri, 23 Mar 2018 16:12:43 GMT

Hey there,

I am struggling with setting up the i2c interface on my MK10DX128VLH7 microprocessor.

Currently I am using KDS to code, but I'm not using Processor Expert.

Could anybody provide an example on how to setup and send 3 data bytes? The MCU should be the master. I want to send 3 bytes (address+data+data). I thought that shouldn't be that difficult...

I basically did the following:

SIM_SCGC4 |= SIM_SCGC4_I2C1_MASK; //Turn on clock to I2C1 module

/* configure GPIO for I2C1 function*/

SIM_SCGC5 |= SIM_SCGC5_PORTE_MASK;

PORTE_PCR0 = PORT_PCR_MUX(0x06);

PORTE_PCR1 = PORT_PCR_MUX(0x06);

/* set MULT and ICR -> S.1141 */

I2C1_F = 0x14;

//I2C1_C1 = I2C_C1_IICEN_MASK; /* enable IIC */

I2C1_C1 = 0x80u; /* s1142 enable IIC - Feld 7 */

/* send start signal */

I2C1_C1 |= 0x10;
I2C1_C1 |= I2C_C1_MST_MASK;

/* send ID with W/R bit */

i2c_write(SlaveID);

  //wait
   while((I2C1_S & I2C_S_IICIF_MASK)==0) {};
      I2C1_S |= I2C_S_IICIF_MASK;

// send data byte

I2C1_D = data;

// send stop

I2C1_C1 &= ~I2C_C1_MST_MASK;
I2C1_C1 &= ~I2C_C1_TX_MASK;

With this code, I hoped to transmit one byte, am I missing something?

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