cc2640 I2C Slave

Puchak

Other Parts Discussed in Thread: CC2640

Hello,

I'm new in RTOS and trying to develop I2C Slave on CC2640 with IAR. I read in TI forum there is no I2C Slave driver for RTOS.

For fist step I want to set directly I2C slave register in my main but the register values don't change and If I set clock to slave program hangs up. What am I doing wrong? Can anyone help me?

Hier is the begin my I2C slave from main:

    // Set up the slave address.
    HWREG(I2C0_BASE + I2C_O_SOAR) = 0x48;

    // Enable the clock to the slave block.
    HWREGBITW(I2C0_BASE + I2C_O_MCR, I2C_MCR_SFE_BITN) = 1;

    // Enable the slave.
    HWREG(I2C0_BASE + I2C_O_SCTL) = I2C_SCTL_DA;

    // Set up the primary slave address.
    HWREG(I2C0_BASE + I2C_O_SOAR) = 0x48;

thanks a lot

over 9 years ago

0 judahvang over 9 years ago

TI__Mastermind 32475 points

What version of TIRTOS are you working with?

0 Puchak over 9 years ago in reply to judahvang

Prodigy 80 points

I installed the ble_sdk_2_02_00_31 from TI web site, which included tirtos_cc13xx_cc26xx_2_18_00_03. Today I tested with the last RTOS version tirtos_cc13xx_cc26xx_2_21_00_06 but the same effect.
regards

0 ToddMullanix over 9 years ago in reply to Puchak

TI__Guru* 96960 points

I've moved your thread to the device forum. They know the drivers/peripherals better.

Todd

0 madhusudan sangam69 over 9 years ago in reply to ToddMullanix

Intellectual 370 points

Hi, I have an issue with I2C

I am using CC2640 Controller, and i am interfacing with two peripherals via I2C

I have DLVR-L02D-E1NJ-C-NI3F, Pressure Sensor : Address is 0x28,

and another is MS4515DO Pressure Sensor: Address is 0x28

Now i am facing a problem, i cant access both sensor, i want to change the address of any one of the sensor,

can you please help me how to change the Slave device address , and what are all the configuration i need to change,

Thanks and Regards
Madhusudan Sangam

0 Christin Lee over 9 years ago in reply to madhusudan sangam69

TI__Guru 57655 points

You can take a look at TI-RTOS out of box example for sensortag board I2C.

In the example code you can see that the slave address can be changed as following

    /* Point to the T ambient register and read its 2 bytes */
    txBuffer[0] = TMP007_OBJ_TEMP;
    i2cTransaction.slaveAddress = Board_TMP007_ADDR;
    i2cTransaction.writeBuf = txBuffer;
    i2cTransaction.writeCount = 1;
    i2cTransaction.readBuf = rxBuffer;
    i2cTransaction.readCount = 2;

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cc2640 I2C Slave