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P140

Manual

P140 Overview

Document versions and changes

Version

Changes

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Product revisions and changes

What is the P140

The P140 is a adapterborad that provides an network interface with up to 4 RJ45/XCode connectors. The network interface is provided over a 1x PCIe interface from the host controller.

I²C Devices

Feature Description

Feature

Description

Pinout Description

J3, J4, J5, J6 - XCode or RJ45 Ethernet connector

J9 - Power connector

Description

Note

J10 - I²C

Description

Note

J11 - PCIe Connector

Software adaption

Example devicetree

The following implements Devicetree nodes are implementing the P140 functionallity for the tca6408 and pca9685 component.

The following devicetree snippet is only an example. The I²C controller depends on your hardware setup.

/*
 * Copyright (c) 2023, AUVIDEA. All rights reserved.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or any
 * later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 */

/ {
    i2c@c240000 {
        p140_control_tca6408: p140_tca6408@21 {
            compatible = "ti,tca6408";
            reg = <0x21>;
	    vcc-supply = <&battery_reg>;
            gpio-controller;
            #gpio-cells = <2>;
            gpio-line-names = "", "", "RESET_POE", "/INT", "EN_PCA", "PGOOD_48V", "EN_48V", ""; 
            
            // this is required for the PCA to be enabled
            en_pca { 
		gpio-hog;
		gpios = <4 0>;
		output-low;
		line-name = "EN_PCA";
	    };
        };

        p140_control_pca9685: p140_pca9685@54 {
            compatible = "nxp,pca9685-pwm";
            #pwm-cells = <2>;
            reg = <0x54>;
	    gpio-line-names = "", "LED4_G", "LED4_R", "LED4_B", "LED3_G", "LED3_R", "LED3_B",
                                "LED2_G", "LED2_R", "LED2_B", "LED1_G", "LED1_R", "LED1_B",
                                "LED0_G", "LED0_R", "LED0_B", "CTL_ALL";
        };
    };
};

Bash Script

Ethernet Switch (KSZ9896C)

This code is meant to initializing the board correctly. Because the settings will reset every time you reboot the board, it is necessary to run this script on every start of the board. The script can take some time to show some response, so wait some time and set the script run until it prints “Done!” in the console.

GPIO Control

This script is made to control specific GPIO Ports which are connected to preset outputs/inputs to check there status or set them to a specific state

All action

Example

PWM Controller (PCA9685)

This script is made to control the PWM Controller, to turn on/off specific/all LEDs on the board

All action

Example

PoE Power Controller (TPS23861)

This script is made to control the PoE Controller on the board. It is possible to set specific ports to on, off or change there mode or turn them off completely

All action

Example

RELEVANT LINKS

Software adaption

Example devicetree

The following implements Devicetree nodes are implementing the P140 functionallity for the tca6408 and pca9685 component.

The following devicetree snippet is only an example. The I²C controller depends on your hardware setup.

/*
 * Copyright (c) 2023, AUVIDEA. All rights reserved.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or any
 * later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 */

/ {
    i2c@c240000 {
        p140_control_tca6408: p140_tca6408@21 {
            compatible = "ti,tca6408";
            reg = <0x21>;
	    vcc-supply = <&battery_reg>;
            gpio-controller;
            #gpio-cells = <2>;
            gpio-line-names = "", "", "RESET_POE", "/INT", "EN_PCA", "PGOOD_48V", "EN_48V", ""; 
            
            // this is required for the PCA to be enabled
            en_pca { 
		gpio-hog;
		gpios = <4 0>;
		output-low;
		line-name = "EN_PCA";
	    };
        };

        p140_control_pca9685: p140_pca9685@54 {
            compatible = "nxp,pca9685-pwm";
            #pwm-cells = <2>;
            reg = <0x54>;
	    gpio-line-names = "", "LED4_G", "LED4_R", "LED4_B", "LED3_G", "LED3_R", "LED3_B",
                                "LED2_G", "LED2_R", "LED2_B", "LED1_G", "LED1_R", "LED1_B",
                                "LED0_G", "LED0_R", "LED0_B", "CTL_ALL";
        };
    };
};

Bash Script

Ethernet Switch (KSZ9896C)

11KB

init_ksz.sh

GPIO Control

5KB

gpio_control.sh

This script is made to control specific GPIO Ports which are connected to preset outputs/inputs to check there status or set them to a specific state

All action

Option

Suboption 1

Description

Example

Action

Command

PWM Controller (PCA9685)

22KB

pwm_led_controller.sh

This script is made to control the PWM Controller, to turn on/off specific/all LEDs on the board

All action

Option

Value 1

Value 2

Description

Example

Action

Command

PoE Power Controller (TPS23861)

18KB

tps23861_poe.sh

This script is made to control the PoE Controller on the board. It is possible to set specific ports to on, off or change there mode or turn them off completely

All action

argument

Description

Example

Action

Command