Function efm_eth_sendCmd

bsp/efm32/drv_ethernet.c:205–237

/ * @brief * Wrapper function of send command to Ethernet device * * @details * * @note * * @param[in] cmd * Command index * * @param[in] addr * Register address * * @param[in/out] data * Pointer to the buffer of register value * * @return * Error code ******************************************************************************/

 *   Error code
 ******************************************************************************/
static rt_err_t efm_eth_sendCmd(
    rt_uint8_t cmd,
    rt_uint8_t addr,
    rt_uint8_t *data)
{
    rt_err_t ret;

    eth_debug("ETH: Send command %x (%x %x)\n", cmd, addr, *data);
    do
    {
        /* Change bank */
        if(((addr & BANK_MASK) != ethBank) && ((addr < EIE) || (addr > ECON1)))
        {
            rt_uint8_t temp;

            if ((ret = efm_eth_cmd(ENC28J60_READ_CTRL_REG, ECON1, &temp)) != RT_EOK)
            {
                break;
            }
            temp &= 0xFC;
            ethBank = (addr & BANK_MASK);
            temp |= ethBank >> BANK_SHIFT;
            if ((ret = efm_eth_cmd(ENC28J60_WRITE_CTRL_REG, ECON1, &temp)) != RT_EOK)
            {
                break;
            }
        }
        /* Send command */
        ret = efm_eth_cmd(cmd, addr, data);
    } while(0);

    return ret;
}

/***************************************************************************//**
 * @brief