树莓派RS485＆CAN扩展板使用教程

简介

RS485＆CAN 扩展板是用于Raspberry Pi的工业通信模块，板上有2 * RS485总线和1 * CAN总线通过SPI接口的通信接口。
CAN总线和RS485总线通过独立的隔离电源模块供电，收发器和控制器之间的信号被隔离，通讯端口具有ESD保护，确保您的树莓派可以在更严格的工业现场使用。

特点

兼容Raspberry Pi 4 Model B / 3B + / 3B / 2B / Zero / Zero W.
只有少量的GPIO被使用，其余引脚则可用于其他扩展功能。请参考:WiKi资料
电源和信号隔离，内置浪涌和ESD保护。
CAN功能，通过SPI接口的板载CAN控制器MCP2515，板载高速CAN收发器，板载数字隔离ADUM1201BRZ，通信速率20Kbps-1Mpbs可任意编程。
RS485功能通过UART，半双工通信控制，无需编程即可支持自动TX / RX控制，板载SPI至RS485 SC16IS1752。电气数据隔离ADM2483。
板载120欧姆的终端电阻，阻抗匹配并保证驱动能力。

GPIO MAP

PIN No PIN of Rpi Usage
PIN18 GPIO_24 RS485 Interrupt
PIN19 GPIO_10 SPI0 MOSI
PIN21 GPIO_9 SPI0 MISO
PIN22 GPIO_25 CAN Interrupt
PIN23 GPIO_11 SPI0 SCLK
PIN24 GPIO_8 RS485 Transfer Chip Selection
PIN26 GPIO_7 CAN Transfer Chip Selection

PIN No	PIN of Rpi	Usage
PIN18	GPIO_24	RS485 Interrupt
PIN19	GPIO_10	SPI0 MOSI
PIN21	GPIO_9	SPI0 MISO
PIN22	GPIO_25	CAN Interrupt
PIN23	GPIO_11	SPI0 SCLK
PIN24	GPIO_8	RS485 Transfer Chip Selection
PIN26	GPIO_7	CAN Transfer Chip Selection

输出接口

No. Function Description
1 RS485_A1 RS485-1 A Single
2 GND_485 RS485-1 Isolated GND
3 RS485_B1 RS485-1 B Single
4 RS485_A2 RS485-2 A Single
5 GND_ISO RS485-2 Isolated GND
6 RS485_B2 RS485-2 B Single
7 CANH CAN-H
8 CAN_GND_ISO CAN Isolated GND
9 CANL CAN-L S

No.	Function	Description
1	RS485_A1	RS485-1 A Single
2	GND_485	RS485-1 Isolated GND
3	RS485_B1	RS485-1 B Single
4	RS485_A2	RS485-2 A Single
5	GND_ISO	RS485-2 Isolated GND
6	RS485_B2	RS485-2 B Single
7	CANH	CAN-H
8	CAN_GND_ISO	CAN Isolated GND
9	CANL	CAN-L S

软件下载: RS485 CAN HAT Download

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斑梨电子

树莓派RS485＆CAN扩展板使用教程

简介

特点

GPIO MAP

PIN No PIN of Rpi Usage
PIN18 GPIO_24 RS485 Interrupt
PIN19 GPIO_10 SPI0 MOSI
PIN21 GPIO_9 SPI0 MISO
PIN22 GPIO_25 CAN Interrupt
PIN23 GPIO_11 SPI0 SCLK
PIN24 GPIO_8 RS485 Transfer Chip Selection
PIN26 GPIO_7 CAN Transfer Chip Selection

输出接口

No. Function Description
1 RS485_A1 RS485-1 A Single
2 GND_485 RS485-1 Isolated GND
3 RS485_B1 RS485-1 B Single
4 RS485_A2 RS485-2 A Single
5 GND_ISO RS485-2 Isolated GND
6 RS485_B2 RS485-2 B Single
7 CANH CAN-H
8 CAN_GND_ISO CAN Isolated GND
9 CANL CAN-L S

树莓派4B工业通信模块RS485＆CAN扩展板 SPI通信接口

斑梨电子

树莓派RS485＆CAN扩展板使用教程

简介

特点

GPIO MAP

PIN NoPIN of RpiUsagePIN18GPIO_24RS485 InterruptPIN19GPIO_10SPI0 MOSIPIN21GPIO_9SPI0 MISOPIN22GPIO_25CAN InterruptPIN23GPIO_11SPI0 SCLKPIN24GPIO_8RS485 Transfer Chip SelectionPIN26GPIO_7CAN Transfer Chip Selection

输出接口

No.FunctionDescription1RS485_A1RS485-1 A Single2GND_485RS485-1 Isolated GND3RS485_B1RS485-1 B Single4RS485_A2RS485-2 A Single5GND_ISORS485-2 Isolated GND6RS485_B2RS485-2 B Single7CANHCAN-H8CAN_GND_ISOCAN Isolated GND9CANLCAN-L S

树莓派4B工业通信模块RS485＆CAN扩展板 SPI通信接口

PIN No PIN of Rpi Usage
PIN18 GPIO_24 RS485 Interrupt
PIN19 GPIO_10 SPI0 MOSI
PIN21 GPIO_9 SPI0 MISO
PIN22 GPIO_25 CAN Interrupt
PIN23 GPIO_11 SPI0 SCLK
PIN24 GPIO_8 RS485 Transfer Chip Selection
PIN26 GPIO_7 CAN Transfer Chip Selection

No. Function Description
1 RS485_A1 RS485-1 A Single
2 GND_485 RS485-1 Isolated GND
3 RS485_B1 RS485-1 B Single
4 RS485_A2 RS485-2 A Single
5 GND_ISO RS485-2 Isolated GND
6 RS485_B2 RS485-2 B Single
7 CANH CAN-H
8 CAN_GND_ISO CAN Isolated GND
9 CANL CAN-L S