Zoltan Hudak
/
UdpServer_ENC28J60
Simple UDP Server using the UIPEthernet library for ENC28J60 Ethernet boards.
main.cpp
- Committer:
- hudakz
- Date:
- 2017-06-30
- Revision:
- 0:8823772081cb
- Child:
- 1:29bb0a32f61d
File content as of revision 0:8823772081cb:
#include "mbed.h" #include "UIPEthernet.h" #include "UIPUdp.h" // MAC address must be unique within the connected network. Modify as appropriate. const uint8_t MY_MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 }; // IP address must be unique and compatible with your network. const IPAddress MY_IP(192, 168, 1, 181); const uint16_t MY_PORT = 7; Serial pc(USBTX, USBRX); UIPEthernet uIPEthernet(D11, D12, D13, D10); // mosi, miso, sck, cs UIPUDP udp; /** * @brief * @note * @param * @retval */ int main(void) { uIPEthernet.begin(MY_MAC, MY_IP); IPAddress localIP = uIPEthernet.localIP(); pc.printf("Local IP = %s\r\n", localIP.toString()); pc.printf("Initialization "); if(udp.begin(MY_PORT)) pc.printf("succeeded.\r\n"); else pc.printf("failed.\r\n"); while(1) { int size = udp.parsePacket(); if(size > 0) { do { char* msg = (char*)malloc(size + 1); int len = udp.read(msg, size + 1); msg[len] = 0; } while((size = udp.available()) > 0); //finish reading this packet: udp.flush(); int success; do { //send new packet back to ip/port of client. This also //configures the current connection to ignore packets from //other clients! success = udp.beginPacket(udp.remoteIP(), udp.remotePort()); if(success) pc.printf("beginPacket: succeeded%\r\n"); else pc.printf("beginPacket: failed%\r\n"); //beginPacket fails if remote ethaddr is unknown. In this case an //arp-request is send out first and beginPacket succeeds as soon //the arp-response is received. } while(!success); char* message = "Hello World from mbed"; success = udp.write((uint8_t*)message, strlen(message)); if(success) pc.printf("bytes written: %d\r\n", success); success = udp.endPacket(); if(success) pc.printf("endPacket: succeeded%\r\n"); else pc.printf("endPacket: failed%\r\n"); udp.stop(); //restart with new connection to receive packets from other clients if(udp.begin(MY_PORT)) pc.printf("restart connection: succeeded%\r\n"); else pc.printf("restart connection: failed%\r\n"); } } }