send_dux_commands
ret = send_dux_commands(dev, USBDUX_CMD_DIO_BITS);
ret = send_dux_commands(dev, USBDUX_CMD_TIMER_RD);
ret = send_dux_commands(dev, USBDUX_CMD_TIMER_WR);
ret = send_dux_commands(dev, USBDUX_CMD_PWM_OFF);
ret = send_dux_commands(dev, USBDUX_CMD_PWM_ON);
ret = send_dux_commands(dev, USBDUX_CMD_MULT_AI);
ret = send_dux_commands(dev, USBDUX_CMD_SINGLE_AI);
ret = send_dux_commands(dev, USBDUX_CMD_AO);