RE: I2C TWI Driver - legacy layer

Susheel Nuguru — Thu, 08 Sep 2022 08:19:41 GMT

If you want a stop, then the driver seems to be sending a 0 as the flag based on the code in nrfx_twim.c

nrfx_err_t nrfx_twim_tx(nrfx_twim_t const * p_instance,
                        uint8_t             address,
                        uint8_t     const * p_data,
                        size_t              length,
                        bool                no_stop)
{
    nrfx_twim_xfer_desc_t xfer = NRFX_TWIM_XFER_DESC_TX(address, (uint8_t*)p_data, length);

    return nrfx_twim_xfer(p_instance, &xfer, no_stop ? NRFX_TWIM_FLAG_TX_NO_STOP : 0);
}

RE: I2C TWI Driver - legacy layer

Canadian_EE — Wed, 07 Sep 2022 22:57:53 GMT

How do I get

nrfx_twim_xfer_desc_t xfer_desc = NRFX_TWIM_XFER_DESC_TXTX(Address_I2C, address_array, sizeof(address_array), start, length);
error_code = nrfx_twim_xfer(&m_twim, &xfer_desc, 1); //NRFX_TWIM_FLAG_TX_NO_STOP

to end with a stop condition?