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: utility/stoip4.c
- Revision:
- 14:7648334eb41b
diff -r 95c00132cd98 -r 7648334eb41b utility/stoip4.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/utility/stoip4.c Tue Sep 03 09:16:55 2019 +0000 @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2014-2018 ARM Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * Licensed under the Apache License, Version 2.0 (the License); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "mbed_version.h" + +#if MBED_MAJOR_VERSION == 2 + +#include <string.h> +#include <stdlib.h> +#include <stdint.h> +#include "common_functions.h" +#include "ip4string.h" + +/** + * Convert numeric IPv4 address string to a binary. + * \param ip4addr IPv4 address in string format. + * \param len Length of IPv4 string, maximum of 16.. + * \param dest buffer for address. MUST be 4 bytes. + * \return boolean set to true if conversion succeded, false if it didn't + */ +bool stoip4(const char *ip4addr, size_t len, void *dest) +{ + uint8_t *addr = dest; + + if (len > 16) { // Too long, not possible + return false; + } + + uint_fast8_t stringLength = 0, byteCount = 0; + + //Iterate over each component of the IP. The exit condition is in the middle of the loop + while (true) { + + //No valid character (IPv4 addresses don't have implicit 0, that is x.y..z being read as x.y.0.z) + if (stringLength == len || ip4addr[stringLength] < '0' || ip4addr[stringLength] > '9') { + return false; + } + + //For each component, we convert it to the raw value + uint_fast16_t byte = 0; + while (stringLength < len && ip4addr[stringLength] >= '0' && ip4addr[stringLength] <= '9') { + byte *= 10; + byte += ip4addr[stringLength++] - '0'; + + //We go over the maximum value for an IPv4 component + if (byte > 0xff) { + return false; + } + } + + //Append the component + addr[byteCount++] = (uint8_t) byte; + + //If we're at the end, we leave the loop. It's the only way to reach the `true` output + if (byteCount == 4) { + break; + } + + //If the next character is invalid, we return false + if (stringLength == len || ip4addr[stringLength++] != '.') { + return false; + } + } + + return stringLength == len || ip4addr[stringLength] == '\0'; +} +#endif