WIO Overview → WIOesp & WIOpico

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• WIOesp32 16 I/O
• WIOpico 16 I/O
• WIOpico 16 I/O CAN
• WIOpico 16 I/O ETH
• RCAN Protocol
• NeoPixel 'Cheat Sheet'
• Optocoupler for 5V Input

Raspberry Pi Pico 1	W5500	W5500

Goal is to provide a Pico with an ethernet connection W5500.
The W5500 is controlled by SPI and the WIOpico-ETH will use the same pin mapping as the WIOpico 16 I/O CAN.

• Only available for Pico's without WiFi shield. ✔️
• Looking up the Rocrail server by mDNS. ✔️
• Transparent communication between WiFi and Ethernet. ✔️
• Same pin mapping as the WIOpico 16 I/O CAN. ✔️

Use the following terminal command to activate the EthCon in WIO:

*ethcon=1

This is bit 0 in options7.
A reboot is needed.

To be able to set the hostname the Ethernet Library must be modified.
In Arduino/libraries/Ethernet/src/Dhcp.cpp the following code must be added/extended:

const char* g_DhcpHostName = ""; // ***** NEW code line
void DhcpClass::send_DHCP_MESSAGE(uint8_t messageType, uint16_t secondsElapsed)

	// OPT - host name
	buffer[16] = hostName;
	// ***** start NEW code lines
	if( strlen( g_DhcpHostName ) > 0 ) { 
		buffer[17] = strlen(g_DhcpHostName);
		strcpy((char*)&(buffer[18]), g_DhcpHostName);
	}
	else {
	// ***** end NEW code lines
		buffer[17] = strlen(HOST_NAME) + 6; // length of hostname + last 3 bytes of mac address
		strcpy((char*)&(buffer[18]), HOST_NAME);
 
		printByte((char*)&(buffer[24]), _dhcpMacAddr[3]);
		printByte((char*)&(buffer[26]), _dhcpMacAddr[4]);
		printByte((char*)&(buffer[28]), _dhcpMacAddr[5]);
	} // ***** NEW code line

• Arduino Ethernet Library → Ethernet
• Arduino mDNS Library → ArduinoMDNS
• Pico Ethernet Library