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what is meaning of i2c8, i2c7 in tm4c1294 connected launchpad

bode miller
Intellectual 640 points

Hello,

Can someone explain me what show i2c7, i2c8 or others numbers of i2c? I change code of startup file vector table for mpu9150 on sensor hub:

MPU9150I2CIntHandler, // I2C8 Master and Slave 

 but i want to know what is meaning of i2c8 and i2c7.

They are not pins, because used pins there are pa2 and pa3.. and others.

Are they just an interface?

thank you!

  • 0
    Guru 117855 points

    bode miller said:
    what is meaning of i2c8 and i2c7.

    Are those not the descriptors for "I2C" modules - which (possibly) reside w/in your ARM MCU.      ([possibly] due to the fact that 8 "i2C" modules seems (almost) excessive to this reporter.)

    Your MCU manual - w/in the I2C chapter - surely lists the number of & designations for - each individual - I2C module.    

    Now most always these will appear upon (different) MCU pins - yet it may not prove possible to employ all such modules, together.

    The pins you note (PA2, PA3) are pin designators - yet if you visit the MCU manuals "Pins" chapter - you will see that the "GPIO Name (PAx)" may shift to the peripheral naming format - when used as a peripheral.

    And yes - the MCU manual describes MANY of its Peripheral Interfaces - the I2C category being just one....     (along w/UART, SPI, PWM, QEI, etc.)