Mbed library for ENC28J60 Ethernet modules. Full support for TCP/IP and UDP Server, Client and HTTP server (webserver). DHCP and DNS is included.
Dependents: mBuino_ENC28_MQTT Nucleo_Web_ENC28J60 Nucleo_Web_ENC28J60_ADC Serial_over_Ethernet ... more
Library for ENC28J60 Ethernet modules.
Ported to mbed from Norbert Truchsess's UIPEthernet library for Arduino. Thank you Norbert!
- Full support for persistent (streaming) TCP/IP and UDP connections Client and Server each, ARP, ICMP, DHCP and DNS.
- Works with both Mbed OS 2 and Mbed OS 5.
Usage:
- Import the library into your project.
- Add
#include "UipEthernet.h"
tomain.cpp
- Create one instance of the UipEthernet class initialized with the MAC address you'd like to use and SPI pins of the connected Mbed board.
Example programs:
Import programWebSwitch_ENC28J60
HTTP Server serving a simple webpage which enables to remotely turn a digital output on/off. Compile, download, run and type 'IP_address/secret/' (don't forget the last '/') into your web browser and hit ENTER.
Import programHTTPServer_Echo_ENC28J60
A simple HTTP server echoing received requests. Ethernet connection is over an ENC28J60 board. Usage: Type the server's IP address into you web browser and hit <ENTER>.
Import programTcpServer_ENC28J60
Simple TCP/IP Server using the UIPEthernet library for ENC28J60 Ethernet boards.
Import programTcpClient_ENC28J60
Simple TCP/IP Client using the UIPEthernet library for ENC28J60 Ethernet boards.
Import programUdpServer_ENC28J60
Simple UDP Server using the UIPEthernet library for ENC28J60 Ethernet boards.
Import programUdpClient_ENC28J60
Simple UDP Client using the UIPEthernet library for ENC28J60 Ethernet boards.
Import programMQTT_Hello_ENC28J60
MQTT Client example program. Ethernet connection is via an ENC28J60 module.
Diff: DnsClient.cpp
- Revision:
- 15:53715cc81c63
- Parent:
- 9:a156d3de5647
- Child:
- 16:269f652b4d0b
--- a/DnsClient.cpp Tue Sep 03 09:16:55 2019 +0000 +++ b/DnsClient.cpp Sat Sep 07 17:42:42 2019 +0000 @@ -128,6 +128,9 @@ int DnsClient::getHostByName(const char* aHostname, IpAddress& aResult) { int ret = 0; + Timer timer; + + timer.start(); // See if it's a numeric IP address if (inet_aton(aHostname, aResult)) { @@ -141,7 +144,7 @@ } // Find a socket to use - if (iUdp.begin(1024 + (time(NULL) & 0xF)) == 1) { + if (iUdp.begin(1024 + ((timer.read_ms() / 1000) & 0xF)) == 1) { // Try up to three times int retries = 0; // while ((retries < 3) && (ret <= 0)) @@ -202,7 +205,7 @@ // +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ // As we only support one request at a time at present, we can simplify // some of this header - srand(time(NULL)); + srand(time(NULL) + 2); iRequestId = rand() % 0xFFFF + 1; // generate a random ID uint16_t twoByteBuffer; @@ -273,12 +276,15 @@ int16_t DnsClient::processResponse(uint16_t aTimeout, IpAddress& aAddress) { time_t startTime = time(NULL); + Timer timer; + + timer.start(); // Wait for a response packet while (iUdp.parsePacket() <= 0) { - if ((time(NULL) - startTime) > aTimeout) + if (timer.read() > aTimeout) return TIMED_OUT; - wait(0.050); + wait_ms(50); } // We've had a reply!