i2c/twi read/write variable data length using twi manager

[Lior Smila]

Hi,

Is it possible to use variable Read/Write twi data length?

I'm using:

nrf_twi_mngr_transfer_t const i2c_write_raw_transfer[1] =
{
    //NRF_TWI_MNGR_WRITE(I2C_HUMIDITY_SENSOR_ADDR, default_config, sizeof(default_config), 0)
  NRF_TWI_MNGR_WRITE(I2C_EXT_RTC_ADDR, i2c_raw_data, 3, 0)
};

err_code = nrf_twi_mngr_perform(&m_nrf_twi_mngr, &g_i2c_data->i2c_nrf_config, i2c_write_raw_transfer, 1, NULL);

In this case, does i2c_write_raw_transfer - has to be const? if yes, is there any other way to use twi manager and read write different data size on a single transaction?

Regards,

Lior.

[Susheel Nuguru]

Hi,

For now the twi_manager is limited to do transaction of equal read and writes only.