nRF51822 I2C

[Tom]

Are there any I2C examples for the nRF51822? If not, can anyone suggest a good starting point for I2C? I am using Keil uVision 4 for development.

[Sam Wei Quan]

nRF51822 I2C example is twi_sw_master_example. I2C also know as two wire interface(TWI). You can check nRF51 SDK documentation for nRF51822 TWI limitation like it only able to use in Master mode.

[Ole Morten]

In addition to the twi_sw_master_example there is also a twi_hw_master_example, that uses the hardware TWI module instead of a bit-banged implementation.

Sam is however correct that the nRF51822 can only be an TWI master, not slave.