Yuki Kikuchi
this code demonstrate how to receive broadcast packet with mbed-os (Mbed OS 5). (tested on LPC1768)
mbed os : https://github.com/ARMmbed/mbed-os
Revision 0:e361f65583a0, committed 2018-02-01
- Comitter:
- yukilab
- Date:
- Thu Feb 01 15:06:09 2018 +0000
- Commit message:
- initial
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed-os.lib | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r e361f65583a0 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Feb 01 15:06:09 2018 +0000
@@ -0,0 +1,48 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+#define MY_PORT 58083
+#define T_1_SECOND 1
+
+Serial pc(USBTX, USBRX); // default to 9600 8N1
+#define log(...) { pc.printf(__VA_ARGS__); }
+
+EthernetInterface interface;
+UDPSocket socket;
+SocketAddress addr;
+
+int main(void) {
+ nsapi_error_t st;
+ const char *addr_char;
+ char buffer[256];
+
+ interface.connect(); // link up and wait DHCP address
+ addr_char = interface.get_ip_address();
+ log("My IP Address: %s\n", addr_char);
+
+ if (!addr.set_ip_address(addr_char)){
+ log("ERROR: failed to set IP address %s\n", addr_char);
+ }else{
+ addr.set_port(MY_PORT);
+ }
+
+ if ((st = socket.open(&interface)) != NSAPI_ERROR_OK) {
+ printf("Failed to open UDP Socket (status %d)\n", st);
+ }
+
+ if ((st = socket.bind((const SocketAddress)addr)) != NSAPI_ERROR_OK) {
+ printf("Failed to bind UDP Socket to port %d (status %d)\n", MY_PORT, st);
+ }
+
+ while(1) {
+ nsapi_size_or_error_t st = socket.recvfrom(&addr, (void *)buffer, (unsigned int)sizeof(buffer));
+ if (st > 0) {
+ buffer[st] = 0;
+ log("received: %s\n", buffer); // assuming text received
+ }else{
+ log("ERROR: socket.recvfrom : %d\n", st);
+ }
+
+ wait(T_1_SECOND);
+ }
+}
\ No newline at end of file
diff -r 000000000000 -r e361f65583a0 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Thu Feb 01 15:06:09 2018 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#caeaa49d68c67ee00275cece10cd88e0ed0f6ed3