WIZnet
..
Dependencies: ESP8266Interface WIZnetInterface_namespace mbed-src
Dual Network Interface
Some our customers want dual network interface like below.
So, I decided to implement dual network interface with ESP8266(WiFi) and WIZwiki-W7500(Ethernet).
Implementation
But, I had some troubles because of the below.
- There is no abstract class for all network interface
- Same header file name in two library WIZnetInterface(EthernetInterface) and ESP8266Interface
- Same class name in two library WIZnetInterface and ESP8266Interface
If I can modify Makefile, there will be better way to solve this problem. But, I couldn't modify Makefile in mbed.
So I solved this problem using namespace. Of course, there may be another way to change all class name and file name in the library. But, I wanted to minimize the changes of original library.
First, I changed the header file name in WIZnetInterface from <*.h> to <*.hpp>.
Declaration namespace in header file
// Endpoint.hpp
namespace wiznet_space {
class Endpoint {
friend class UDPSocket;
....................
}
}
// Socket.hpp
namespace wiznet_space {
class Socket {
public:
Socket();
..........................
}
}
..........................
..........................
Using namespace in source file
// main.c
..........................
ESP8266Interface wifi(D1, D0, D2, "WizFiDemoAP","12345678",115200); // tx, rx for
wiznet_space::EthernetInterface eth;
bool InitializeWiznetEthernet()
{
uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0xFF, 0x11, 0x22};
eth.init(mac_addr, "192.168.3.102", "255.255.255.0", "192.168.3.1"); //Use DHCP
.......................................................................................................................
}
bool InitializeESP8266()
{
wifi.init();
.......................................................................................................................
}
int main()
{
....................................................................
// Ethernet : WIZnet hardwired TCP/IP in W7500
if ( InitializeWiznetEthernet() )
{
// Send TCP/IP data via Ethernet
ProcessDataViaEthernet();
}
// WiFi : ESP8266
if ( InitializeESP8266() )
{
// Send TCP/IP data via WiFi
ProcessDataViaWiFi();
}
....................................................................
}
// ProcessDataViaEthernet.cpp
void ProcessDataViaEthernet()
{
wiznet_space::TCPSocketConnection eth_sock;
eth_sock.connect("192.168.3.64", 6000);
char send_data[] = "This is from Ethernet Interface\r\n";
eth_sock.send_all(send_data, sizeof(send_data)-1);
eth_sock.close();
}
// ProcessDataViaWiFi.cpp
void ProcessDataViaWiFi()
{
::TCPSocketConnection wifi_sock;
wifi_sock.connect("192.168.3.64", 6000);
char send_data[] = "This is from WiFi Interface\r\n";
wifi_sock.send_all(send_data, sizeof(send_data)-1);
wifi_sock.close();
}
And, here are screenshots of this test.
Conclusion
I know that this way is a kind of work-around way. Best way is to design a new network-abstract-class and hierarchical network-interface-classes based on the network-abstract-class.
- Ethernet : lwIP, WIZnet hardwired TCP/IP
- WiFi : ESP8266, WiFly, WizFi250, CC3000, ....
- Other interfaces(3G/4G, BT, .....)
I believe that mbed-team will release a new network classes based on a hierarchical architecture .
Until then, you can refer to the this code for dual network interface, temporarily.
Diff: main.cpp
- Revision:
- 0:0543bf604693
- Child:
- 1:a79f264f321f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Jun 29 09:42:11 2015 +0000
@@ -0,0 +1,170 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+//#include "ESP8266Interface.h"
+
+#define MAC "\x00\x08\xDC\xAA\xAA\xAA"
+#define IP "192.168.3.110"
+#define MASK "255.255.255.0"
+#define GATEWAY "192.168.3.1"
+
+int main() {
+ EthernetInterface eth;
+
+ ////////////////////////////////////////////////////////////////////////////////////
+ // sekim XXXX
+ //eth.init(); //Use DHCP
+ //uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0xFF, 0x11, 0x22};
+ //eth.init(mac_addr);
+ eth.init((uint8_t*)MAC,IP,MASK,GATEWAY); //IP,mask,Gateway
+ eth.link();
+ ////////////////////////////////////////////////////////////////////////////////////
+
+ eth.connect();
+ printf("\r\nIP address is %s\r\n", eth.getIPAddress());
+
+ TCPSocketConnection sock;
+ sock.connect("google.com", 80);
+
+ printf("XXX 200 : Connected\r\n");
+
+ char http_cmd[] = "GET /hello.txt HTTP/1.0\n\n";
+ sock.send_all(http_cmd, sizeof(http_cmd)-1);
+
+ char buffer[300];
+ int ret;
+ while (true) {
+ ret = sock.receive(buffer, sizeof(buffer)-1);
+ printf("XXX 210 : Recv(%d) \r\n", ret);
+ if (ret <= 0)
+ break;
+ buffer[ret] = '\0';
+ printf("Received %d chars from server:\n%s\r\n", ret, buffer);
+ }
+
+ printf("XXX 220 : Closed\r\n");
+
+ sock.close();
+
+ eth.disconnect();
+
+ while(1) {}
+}
+
+/*
+
+
+
+
+
+
+
+
+
+
+
+
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+AnalogIn pot1(A0);
+AnalogIn pot2(A1);
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+EthernetInterface eth;
+TCPSocketConnection sock;
+
+int main()
+{
+ //uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0x00, 0x01, 0x02};
+ uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0xFF, 0x11, 0x22};
+ char *MODEL = "mbed";
+ char *SERIAL_NUM = "input_your_serial_num";
+ float DEADBAND = 0.015;
+ char* ip;
+
+ int http_cmd_sz=800;
+ char http_cmd[http_cmd_sz];
+ int buffer_sz=300;
+ char buffer[buffer_sz];
+ int returnCode = 0;
+
+ for (int i=0; i<5; i++) {
+ led1 = 1;
+ wait(0.2);
+ led1 = 0;
+ wait(0.2);
+ }
+
+ led1 = 1;
+ led2 = 1;
+ led3 = 1;
+ led4 = 1;
+
+ printf("initializing Ethernet\r\n");
+ eth.init(mac_addr); //Use DHCP
+ if ( returnCode == 0 )
+ {
+ printf(" - Ethernet ready\r\n");
+ led1 = returnCode;
+ }
+ else
+ {
+ printf(" - Could not initialize Ethernet - ending\r\n");
+ return 0;
+ }
+
+ eth.ethernet_link();
+ printf("eth.ethernet_link() %d \r\n", eth.ethernet_link());
+
+ printf("Ethernet.connecting \r\n");
+ returnCode = eth.connect();
+
+ printf(" - connecting returned %d \r\n", returnCode);
+ led2 = returnCode != -1 ? 0: 1;
+ printf("Trying to get IP address..\r\n");
+ ip = eth.getIPAddress();
+ led3 = strlen(ip)<4 ? 1: 0;
+ printf(" - IP address:%s\r\n", ip);
+
+ float oil_level = 0.0;
+ float oil_level2= 0.0;
+ float oldPotVal = -2.0;
+ float oldPotVal2 = -2.0;
+
+ while(1) {
+ oil_level = pot1.read();
+ oil_level2= pot2.read();
+
+ if ( abs(oil_level - oldPotVal) < DEADBAND && abs(oil_level2 - oldPotVal2) < DEADBAND)
+ {
+ continue;
+ }
+ else
+ {
+ led4 = 1;
+ oldPotVal = oil_level;
+ oldPotVal2 = oil_level2;
+ printf("Sending Value for well1 %.2f\n\r", oil_level);
+ printf("Sending Value for well2 %.2f\n\r", oil_level2);
+ sock.connect("toolbox-connect.axeda.com", 80);
+
+ snprintf(http_cmd, http_cmd_sz, "POST /ammp/data/1/%s!%s HTTP/1.1\r\nContent-Type: application/json\r\nContent-Length: 65\r\n\r\n{\"data\":[{\"di\":{\"oil_level\":%.2f, \"oil_level2\":%.2f}}]}\r\n\r\n", MODEL, SERIAL_NUM, oil_level, oil_level2);
+ sock.send_all(http_cmd, http_cmd_sz-1);
+
+ while ( (returnCode = sock.receive(buffer, buffer_sz-1)) > 0)
+ {
+ buffer[returnCode] = '\0';
+ printf("Received %d chars from server:\n\r%s\n", returnCode, buffer);
+ }
+ led4 = returnCode;
+ sock.close();
+ }
+
+ }
+
+}
+ */
\ No newline at end of file