Difference between revisions of "Edge-RT300/zh"
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'''RS-485''' | '''RS-485''' | ||
− | * 使用SN65HVD3082EDR RS-485 收发器, 支持 1/8 Unit | + | * 使用SN65HVD3082EDR RS-485 收发器, 支持 1/8 Unit Load—多达 256 个节点, ESD防护高达15 kV。 |
* 波特率: 0.2Mbps MAX | * 波特率: 0.2Mbps MAX | ||
* 连接到UART2. | * 连接到UART2. | ||
'''M-Bus Master''' | '''M-Bus Master''' | ||
* 连接到UART3。 | * 连接到UART3。 | ||
− | * | + | * 支持多达40个从设备。 |
* 波特率: 2400~9600 | * 波特率: 2400~9600 | ||
* 关于M-bus, 可参考 https://m-bus.com/documentation | * 关于M-bus, 可参考 https://m-bus.com/documentation | ||
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===USB Host=== | ===USB Host=== | ||
− | + | 百兆以太网, MiniPCIe 和 USB Type-A 共享 USB 2.0 480Mbps 带宽. | |
===User LEDs=== | ===User LEDs=== |
Latest revision as of 08:17, 12 August 2020
Contents
1 简介
- Edge-RT300是基于SOM-4418设计的一款针对物联网应用的开发板。它配备了双有线以太网,Wi-Fi,蓝牙,4G,RS-485,M-Bus总线接口,非常适合做物联网网关。
2 硬件特性
- 核心板: SOM-4418
- SoC:Samsung S5P4418 Quad Core Cortex-A9 with dynamic frequency scaling up to 1.4G Hz
- System Memory:1GB 32bit DDR3 RAM
- eMMC:8GB
- 互联接口:
- 一个原生千兆以太网(PHY 是 RTL8211E) ,拥有全球唯一MAC地址,支持网络唤醒(WoL)功能
- 一个USB2.0转百兆以太网(RTL852B)
- 一个 MiniPCIe 插槽 和一个MicroSIM卡座子,用于扩展4G模块
- 集成802.11b/g/n Wi-Fi和 Bluetooth 4.0 模块(AP6212)
- 一路 TTL 转 RS-485 接口
- 一路 TTL 转 有线M-BUS Master 接口
- 视频输入: MIPI-CSI
- 显示接口: LVDS
- 音频: 2-Chanel headphone output, one Microphone input
- USB: 1 x USB 2.0 Host(Via USB Hub), 1 x USB 2.0 OTG
- LED: 1 x power LED , 2 x User LED
- Key: 1 x User Key, PowerKey, Reset key, SD/MMC Boot Select key
- 其它: 1 x MicroSD, RTC battery input, 2-pin ZH连接器风扇接口
- Power: DC 12V/2A
- PCB: Four Layer, 96 mm x 90 mm x 1.6mm
- Working Temperature: -40℃ to 70℃
3 详细描述
3.1 RS-485&M-BUS
Pin# | 6 | 5 | 4 | 3 | 2 | 1 |
---|---|---|---|---|---|---|
Name | L2 | L1 | B | A | GND | 12V |
Description | M-BUS L2 | M-BUS L1 | RS-485 B | RS-485 A | GND | 12V Power input(optional) |
RS-485
- 使用SN65HVD3082EDR RS-485 收发器, 支持 1/8 Unit Load—多达 256 个节点, ESD防护高达15 kV。
- 波特率: 0.2Mbps MAX
- 连接到UART2.
M-Bus Master
- 连接到UART3。
- 支持多达40个从设备。
- 波特率: 2400~9600
- 关于M-bus, 可参考 https://m-bus.com/documentation
3.2 MIPI-CSI&Audio
引脚定义'
Pin# | Name | Description |
---|---|---|
1 | 3.3V out | 3.3V Power Output |
2 | 3.3V out | 3.3V Power Output |
3 | GND | Ground |
4 | I2C0_SDA | I2C bus0 data |
5 | I2C0_SCL | I2C bus0 clock |
6 | GND | Ground |
7 | AUDIO_GND | Audio Common terminal |
8 | HP_R | Headphone output R |
9 | HP_L | Headphone output L |
10 | MICIN_P | Microphone input P |
11 | GND | Ground |
12 | GPIOB23 | GPIO |
13 | GPIOC2 | GPIO |
14 | GPIOC13/PWM1 | GPIO or PWM |
15 | GND | Ground |
16 | GPIOB27/HP_DETECT | GPIO, or Headphone insert detect |
17 | /NC | |
18 | GND | Ground |
19 | /NC | |
20 | /NC | |
21 | GND | Ground |
22 | MIPI_CSI0_D1N | MIPI CSI Data0 |
23 | MIPI_CSI0_D1P | |
24 | GND | Ground |
25 | MIPI_CSI0_D0N | MIPI CSI Data1 |
26 | MIPI_CSI0_D0P | |
27 | GND | Ground |
28 | MIPI_CSI0_CLKN | MIPI CSI Clock |
29 | MIPI_CSI0_CLKP | |
30 | GND | Ground |
3.3 LVDS
Pin# | Name | Description |
---|---|---|
1 | 5V | 5V Power output |
2 | 5V | 5V Power output |
3 | 5V | 5V Power output |
4 | LVDS_Y0M | LVDS D0- |
5 | LVDS_Y0P | LVDS D0+ |
6 | GND | Ground |
7 | LVDS_Y1M | LVDS D1- |
8 | LVDS_Y1P | LVDS D1+ |
9 | GND | Ground |
10 | LVDS_Y2M | LVDS D2- |
11 | LVDS_Y2P | LVDS D2+ |
12 | GND | Ground |
13 | LVDS_CLKM | LVDS Clock- |
14 | LVDS_CLKP | LVDS Clock+ |
15 | GND | Ground |
16 | LVDS_Y3M | LVDS D3- |
17 | LVDS_Y3P | LVDS D3+ |
18 | GND | Ground |
19 | /NC | |
20 | GND | Ground |
21 | LCD_SCL | for touch pannel,and backlight control,etc |
22 | LCD_SDA | |
23 | LCD_TPINT | |
24 | GND | Ground |
3.4 USB Host
百兆以太网, MiniPCIe 和 USB Type-A 共享 USB 2.0 480Mbps 带宽.
3.5 User LEDs
LED | LED1 | LED2 |
---|---|---|
GPIO | GPIOB30 | GPIOB31 |
点亮灯的逻辑 | 0 | 0 |
3.6 User Key
这个按键连接到AliveGPIO3上。
3.7 RJ45 Ethernet
千兆以太网支持WOL(局域网唤醒)功能。 以下步骤显示了如何启用此功能。
a) 首先禁用NetworkManager
b) 安装ethtool
c) 把以下3行添加到/etc/network/interfaces
auto eth0 iface eth0 inet dhcp ethernet-wol g
3.8 调试串口
波特率是 115200bps.
3.9 Power Supply
负载 | MiniPCIe | USB Type-A | USB OTG | LVDS | MIPI-CSI&Audio |
---|---|---|---|---|---|
输出电压 | 3.5V | 5V | 5V | 5V | 3.3V |
推荐负载 | 2A | 0.5A | 0.5A | 0.3A | 0.3A |
最大允许负载 | 3A | 1A | 1A | 0.5A | 0.5A |
总共不要超过10W |
4 Schematics & Mechanical drawing
- PCB Dimension(Edge-RT300_2003_dxf.zip)
- Schematic(Edge-RT300-2003-Schematic.pdf)