Establishing connection with W5500, Novice

Question

Hello, I am working on a project involving an EFM32ZG110F32 MCU communicating over SPI with the W5500. I can successfully read and write registers on the W5500. My next step is to communicate data from W5500 over ethernet to my computer application. I am very much a programming novice and have no experience coding with real hardware or with TCP/IP. Thus I am seeking some guidance to continue with my project as I am stuck for a while. My project exists in Simplicity Studio. I have available to me the W5500 IO library and the loopback example for the Tiny Gecko, which I have modified to build/run on my Zero Gecko Chip. I am debugging with a Zero Gecko as well if that matters. My problem seems to be that I am not establishing a socket connection. I have tried running the loopback example and pinging my device with Hercules while plugging in my project board to my PC. When I monitor traffic via Wireshark, I see that my PC is sending name queries to the device and not receiving a response. When I plug into a router, my device also does not show up. However I mostly am just probing around seeking results and greatly need someone to help mentor me through this. I can certainly post snippets of my code if that will help, but I do not know where to start. Many thanks for your help.

Kei · Answer

Hello. Are you trying to implement the Serial to Ethernet feature using the W5500? First of all, I need to know what library or example you referenced. If you only refer to ioLibrary, it depends on your code. In this case, it is difficult to give more answers unless I check your code. Have you ever referenced Opensource in Url below? [url]https://github.com/Wiznet/WIZ550SR[/url] The source at this URL is the source of the Serial to Ethernet module. If you have not already see so, please see this first. In addition, I need network information (IP Address, SubnetMask, Gateway …) of your PC and network information applied to your device (W5500 + MCU). Best regard, Kei.

ThermalSon112 · Answer

I believe that yes I am trying to use serial to Ethernet. I have an SI7013 temperature/humidity sensor transmitting data via I2C to my Zero Gecko MCU. I would like to take that data and transfer it via SPI to the W5500, and then transfer the data out via Ethernet to a controller/PC application. I2C and SPI are functioning well. I am using code from the ioLibrary successfully for reads, writes, inits, resets, etc. Specifically I am using W5500.c, socket.c, and wizchip_conf.c. I am also referencing efm32tg840f32_w5500_20131220.zip, a loopback example for the Tiny Gecko. I have been statically assigning an IP address, default gateway, and subnet mask using ctlnetwork(CN_SET_NETINFO,…). A good pseudo code example of how to achieve what I am trying to do would be very helpful, as I am lacking direction. I have found little information in the spec and do not have a clear set of objectives as to how to transfer my data. I would like to even be able to plug my Ethernet device into a router and detect it. Then I think I can write a mini web-server and send data via XML. But first I need to establish connection. I will take a look through your linked example and continue hammering away at this. Thanks!

Sachin Singh · Answer

UDP-STM32F100-W5500- Working Code #include #include #include #include #include #include #include #include void Wiz_Write_Multi( unsigned short , unsigned char , unsigned char * , unsigned short ) ; // , , Pointer , Array Count void Wiz_Read_Multi( unsigned short , unsigned char , unsigned char *, unsigned short ) ; // , , Pointer , Array Count void LEDSetup(void); void SPI1_setup(void); void SPI_SendBye(unsigned char); unsigned char SPI_ReadByte(); void Tim2_init(unsigned char); void Delay( unsigned char , unsigned short); // 0 = Micro , 1 = Mili void Wiz_Setup_A_INIT(void); void Wiz_Setup_B_OPEN(void); void ExtInterruptLineConfig(void) ; void GetData(unsigned char* , unsigned short* , unsigned char*); unsigned char SendData(unsigned char* , unsigned short); unsigned short DataRecievedCheck(void); #define BSB_Common_Reg 0b00000 // Block Selection Bits - Common Reg #define BSB_Sok_0_Reg 0b00001 #define Wiz_CS GPIO_Pin_3 // Port A #define Wiz_RST GPIO_Pin_2 // Port A // __disable_irq();RecvCount = 0 ; // Atomic __enable_irq(); unsigned volatile char DataRecieved = 0 ; // To be changed by Socket Interrupt = Volatile int main(void) { LEDSetup(); SPI1_setup(); ExtInterruptLineConfig(); Wiz_Setup_A_INIT(); Wiz_Setup_B_OPEN(); unsigned short RecvCount = 0 ; unsigned short Count = 0 ; unsigned char Data[64]; unsigned char SCADAInfo[8]; while(1) { GPIO_SetBits(GPIOC, GPIO_Pin_8 | GPIO_Pin_9 ); Delay(1,500); GPIO_ResetBits(GPIOC, GPIO_Pin_8 | GPIO_Pin_9 ); Delay(1,500); // RecvCount = DataRecievedCheck(); // if( RecvCount ) Polling if( DataRecieved ) // Interrupt { DataRecieved = 0 ; GetData(Data , &Count ,SCADAInfo); // Recieve Data = Closes Soket in the end Wiz_Setup_B_OPEN(); SendData(Data ,Count ); // Send Data = Closes Soket in the end Wiz_Setup_B_OPEN(); // Wiz UDP = Open-Close Socket every Time. But NOT in Wiz TCP } } return 1 ; } void…