Bongjun Hur
Simple mbed OS sockets example for mbed OS5 & W5500 SPI Ethernet controller. This is a quick example of a simple HTTP client program using the network-socket API that is provided as a part of mbed-os. The program brings up an underlying network interface, and uses it to perform an HTTP transaction over a TCPSocket.
Dependencies: W5500Interface easy-connect
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mbed-os-example-mbed5-sockets
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mbed-os-examples
Result
- Serial Terminal Log
Revision 55:8165a6a797a4, committed 2018-08-13
- Comitter:
- Bongjun
- Date:
- Mon Aug 13 08:12:45 2018 +0000
- Parent:
- 54:0f5a9685585e
- Commit message:
- Simple mbed OS sockets example for mbed OS5 and W5500 SPI Ethernet controller
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/W5500Interface.lib Mon Aug 13 08:12:45 2018 +0000 @@ -0,0 +1,1 @@ +http://os.mbed.com/users/Bongjun/code/W5500Interface/#5118c2bff025
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/easy-connect.lib Mon Aug 13 08:12:45 2018 +0000 @@ -0,0 +1,1 @@ +http://os.mbed.com/users/Bongjun/code/easy-connect/#307d527714cf
--- a/main.cpp Tue Jul 31 14:15:07 2018 +0100
+++ b/main.cpp Mon Aug 13 08:12:45 2018 +0000
@@ -1,4 +1,7 @@
+#include <string>
#include "mbed.h"
+#include "easy-connect.h"
+#include "nsapi_dns.h"
// Network interface
NetworkInterface *net;
@@ -18,8 +21,16 @@
printf("Mbed OS version: %d.%d.%d\n\n", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);
#endif
- net = NetworkInterface::get_default_instance();
+// net = NetworkInterface::get_default_instance();
+ printf("Easy connect...\n");
+ net = easy_connect(true);
+ if (!net) {
+ printf("Cannot connect to the network, see serial output");
+ return 1;
+ }
+ printf("Connected to the network. Opening a socket...\n");
+
if (!net) {
printf("Error! No network inteface found.\n");
return 0;
@@ -44,8 +55,10 @@
if (r != 0) {
printf("Error! socket.open() returned: %d\n", r);
}
-
+
r = socket.connect("api.ipify.org", 80);
+ //r = socket.connect("23.23.114.123", 80);
+
if (r != 0) {
printf("Error! socket.connect() returned: %d\n", r);
}
@@ -69,16 +82,25 @@
remaining = 256;
rcount = 0;
p = buffer;
+
+ r = socket.recv(p, remaining);
+ /*
+ // modified source..a bit strnage...
while (0 < (r = socket.recv(p, remaining))) {
p += r;
rcount += r;
remaining -= r;
}
+ */
if (r < 0) {
printf("Error! socket.recv() returned: %d\n", r);
goto disconnect;
}
+ p += r;
+ rcount += r;
+ remaining -= r;
+
printf("recv %d [%.*s]\n", rcount, strstr(buffer, "\r\n")-buffer, buffer);
// The api.ipify.org service also gives us the device's external IP address
--- a/mbed_app.json Tue Jul 31 14:15:07 2018 +0100
+++ b/mbed_app.json Mon Aug 13 08:12:45 2018 +0000
@@ -1,8 +1,51 @@
{
+ "config": {
+ "network-interface":{
+ "help": "options are ETHERNET, ETHERNET_W5500, WIFI_ESP8266, WIFI_ODIN, MESH_LOWPAN_ND, MESH_THREAD",
+ "value": "ETHERNET_W5500"
+ },
+ "mesh_radio_type": {
+ "help": "options are ATMEL, MCR20, SPIRIT1, EFR32",
+ "value": "ATMEL"
+ },
+ "esp8266-tx": {
+ "help": "Pin used as TX (connects to ESP8266 RX)",
+ "value": "D1"
+ },
+ "esp8266-rx": {
+ "help": "Pin used as RX (connects to ESP8266 TX)",
+ "value": "D0"
+ },
+ "esp8266-debug": {
+ "value": true
+ },
+ "wifi-ssid": {
+ "value": "\"SSID\""
+ },
+ "wifi-password": {
+ "value": "\"Password\""
+ }
+ },
"target_overrides": {
"*": {
+ "target.features_add": ["NANOSTACK", "LOWPAN_ROUTER", "COMMON_PAL"],
+ "platform.stdio-baud-rate": 115200,
"platform.stdio-convert-newlines": true,
- "target.network-default-interface-type": "ETHERNET"
+ "mbed-mesh-api.6lowpan-nd-channel-page": 0,
+ "mbed-mesh-api.6lowpan-nd-channel": 12,
+ "mbed-trace.enable": 0
+ },
+ "HEXIWEAR": {
+ "esp8266-tx": "PTD3",
+ "esp8266-rx": "PTD2"
+ },
+ "NUCLEO_F401RE": {
+ "esp8266-tx": "D8",
+ "esp8266-rx": "D2"
+ },
+ "NUCLEO_F411RE": {
+ "esp8266-tx": "D8",
+ "esp8266-rx": "D2"
}
}
}