# Flylead

This MIB allow to connect and test any DUT as the MIB expose every connectors
available.

:::{figure-md}
![MIB](/_images/mibs/flylead/flylead-mib.jpg){align=center}

Flylead MIB
:::

:::{figure-md}
![MIB](/_images/mibs/flylead/header.jpg){align=center}

Flylead header
:::

:::{admonition} `DDT_OPTO_` labels
:class: warning
By mistake, the `DUT_OPTO_` headers are wrongly labeled `DDT_OPTO_` (see the
above picture) on the flylead header. In the listing above, the right labels
are used.
:::

## Header pinout

The flylead header pinout is defined as below:

|    | A               | B                 |
|----|-----------------|-------------------|
|  1 | SIB_UART4_RX    | GND               |
|  2 | SIB_UART4_TX    | GND               |
|  3 | DDT_GPIO_6      | DDT_GPIO_8        |
|  4 | DDT_GPIO_7      | DDT_GPIO_9        |
|  5 | SIB_UART1_RX    | SIB_UART3_TX      |
|  6 | SIB_UART1_TX    | SIB_UART3_RX      |
|  7 | SIB_UART1_RTS   | GND               |
|  8 | SIB_UART1_CTS   | GND               |
|  9 | I2C_MIB_VIO_SDA | I2C_SIB_3V3_SDA   |
| 10 | I2C_MIB_VIO_SCL | I2C_SIB_3V3_SCL   |
| 12 | DDT_MOSI        | DDT_MISO          |
| 12 | DDT_SCK         | GND               |
| 13 | DDT_CS          | DDT_GPIO_2        |
| 14 | GND             | GND               |
| 15 | DDT_GPIO_1      | DUT_OPTO_2E       |
| 16 | GND             | DUT_OPTO_2C       |
| 17 | DDT_GPIO_3      | DUT_OPTO_1E       |
| 18 | GND             | DUT_OPTO_1C       |
| 19 | DDT_GPIO_4      | DUT_PWR           |
| 20 | DDT_GPIO_5      | DUT_RST           |

## USB ports

:::{admonition} USB ports
:class: warning
The two USB ports on the flylead MIB are always ON and cannot be controlled
from the software.
:::

If you need a switchable USB port, use one of the [4 ports on the SIB](/hardware/peripherals.md#dut-usb).

## Software usage

### Optocouplers

Some optocouplers are available to toggle on and off virtual buttons. The
buttons can be controlled with:

```shell
laacli button 1 on
laacli button 1 off
```

The different buttons are:

* `DUT_OPTO_1C` and `DUT_OPTO_1E`: virtual button `1`
* `DUT_OPTO_2C` and `DUT_OPTO_2E`: virtual button `2`
* `DUT_RST`: `reset` button
* `DUT_PWR`: `power` button

### Power rails

Each power rail is available via  screw terminal and can be controlled by
laacli:

```shell
laacli power 12v on
laacli power 12v off
laacli power 12v reset
```

The MIB provides access to the 4 power rails: 1v8, 3v3, 5v and 12v.

### Serials

The header provides 3 set of serials:

* `SIB_UART1` as `/dev/ttycmx0`: DUT serial with hardware flow control
* `SIB_UART3` as `/dev/ttycmx2`: LAA serial
* `SIB_UART4` as `/dev/ttycmx3`: DUT serial

`SIB_UART4` is also available via telnet:

```shell
telnet localhost 2000
```