Template: UART TO ETH for Arduino use
This example has been tested on Arduino Uno. Just connect to Arduino uno as shown in the table below.
Working with Arduino
Hardware Connection
You can connect according to the following table.
ETH | Arduino | Function |
5V | 5V | Power input |
GND | GND | Power ground |
RXD1 | TX | Serial data input |
TXD1 | RX | Serial data output |
CFG0 | D2 | Network configuration enable pin |
RST1 | D4 | Reset |
Direct connection
Install and compile the software (Windows tutorial)
Run the demo
Download the demo in the information we provide, unzip it, and then enter the 2-CH UART TO ETH_CODE/Arduino directory.
If you don't want to configure the parameters through the host computer, you can run the project in Serial_Port_Parameter_Configuration and double-click to open the .ino file.
Choose your development board and the corresponding port.
Change the corresponding parameters according to your needs, and then compile and download (you don't need to connect the RXD and TXD of ETH to the Arduino during the download process, otherwise the download will fail), as shown below:
After configuration, you can compile and download the project in RX_TX, and double-click to open the .ino file.
After the download is successful, run SSCOM to connect to the ETH module, and you can send data to ETH, and ETH will return everything you sent to it.
(Remember to connect RXD and TXD to Arduino.)
Code Analysis
Configure the parameters through the serial port (modify according to your needs):
- Data type:
#define uint8_t unsigned char #define uint16_t short unsigned int #define uint32_t long unsigned int
- This demo only has a simple configuration. If you need to configure other functions, you can refer to the serial port control command and configure it yourself:
uint8_t CH9121_Mode //Mode selection uint8_t CH9121_LOCAL_IP[4] //Local IP uint8_t CH9121_GATEWAY[4] //Gateway uint8_t CH9121_SUBNET_MASK[4] //Subnet mask uint8_t CH9121_TARGET_IP[4] //Target IP uint16_t CH9121_PORT1 //Local port uint16_t CH9121_TARGET_PORT //Target port uint32_t CH9121_BAUD_RATE //Serial port baud rate
- According to the serial port control command, the following functions can be used to configure the parameters:
void CH9121_TX_4_bytes(UCHAR data, int command); //Used for mode, whether the port is random, whether the port is disconnected from the network, whether to clear the serial port data, whether to open //DHCP, whether to open the serial port 2 void CH9121_TX_5_bytes(UWORD data, int command); //Used to set the port number of the serial port void CH9121_TX_7_bytes(UCHAR data[], int command);//Used to set IP, subnet mask, gateway void CH9121_TX_BAUD(UDOUBLE data, int command); //Used to set the baud rate of the serial port void CH9121_Eed(); //Update configuration parameters to EEPROM, execute configuration, reset 9121, leave configuration mode