Austin Blackstone
demo of Murata wifi chip as TCP client.
Dependencies: SNICInterface mbed-rtos mbed
Fork of
murataDemo
by 
Austin Blackstone
Intro
this program demonstrates how to use TCP on the Murata Wifi chip. It will connect to a server and send a message, the server will then send a reply. The reply will be printed out to the terminal on the microcontroller.
Instructions
- Make sure you have both the wifi device and the computer running the server on the same network / wifi router.
- Change the hard coded IP in the microcontroller code to match that of the laptop running the python server.
- Run the python2 script below on the computer
- Have a console hooked up to the microcontroller and watch as messages are sent back and forth between the server (python) and the client (murata).
- Run the microcontroller code on the device.
For ease of use numbers have been appended to the end of the messages being sent back and forth.
Python Server
Please run this python2.7 code on your computer. Make sure to change the IP Address in the microcontroller code to match the IP of your computer.
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 7))
s.listen(1)
x = 0
while True:
conn, addr = s.accept()
print 'Connected b'TCP data from server: 'y', addr
while True:
# receive data from board
data = conn.recv(1024)
# check received data
if not data:
break
# print received data
print("TCP data from microcontroller: '"+data+"'")
# send data to board with counter to differentiate messages
conn.sendall("HelloFromPython!: "+str(x)+"\n\r")
x+=1
# close the port
conn.close()
Revision 7:0eff5db44b8b, committed 2013-10-11
- Comitter:
- xively
- Date:
- Fri Oct 11 12:39:08 2013 +0000
- Parent:
- 5:04b5c5242bbf
- Child:
- 8:81743e1228a7
- Commit message:
- Update to use latest version of libxively (in sync with git)
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/app_board_io.cpp Fri Oct 11 12:39:08 2013 +0000
@@ -0,0 +1,18 @@
+#include "app_board_io.h"
+
+C12832_LCD lcd;
+
+extern "C" void lcd_printf( const char* fmt, ... )
+{
+ char buffer[ 64 ];
+
+ va_list ap;
+ va_start( ap, fmt );
+ vsnprintf( buffer, 64, fmt, ap );
+ va_end( ap );
+
+ lcd.cls();
+ lcd.locate( 0, 3 );
+ lcd.printf( buffer );
+ //wait( 1.0 );
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/app_board_io.h Fri Oct 11 12:39:08 2013 +0000 @@ -0,0 +1,9 @@ +#include "MMA7660.h" +#include "LM75B.h" + +#include <stdarg.h> +#include <stdio.h> + +#include "C12832_lcd.h" + +extern "C" void lcd_printf( const char* fmt, ... ); \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libxively.lib Fri Oct 11 12:39:08 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/xively/code/libxively/#037241ec3163
--- a/main.cpp Wed Jun 26 11:55:36 2013 +0000
+++ b/main.cpp Fri Oct 11 12:39:08 2013 +0000
@@ -1,52 +1,22 @@
#include "mbed.h"
#include "EthernetInterface.h"
+
+#define XI_FEED_ID 128488 // set Xively Feed ID (numerical, no quoutes
+#define XI_API_KEY "T4KXAH_dasgw1PWBPc3fdsfsdgsdy-dUc4ND0g" // set Xively API key (double-quoted string)
+
+#include "app_board_io.h"
+
+#define XI_DEBUG_PRINTF lcd_printf
+#define XI_DEBUG_OUTPUT 1
+#define XI_DEBUG_ASSERT 0
+
#include "xively.h"
#include "xi_err.h"
-#include "xi_printf.h"
-
-#include <stdarg.h>
-#include <stdio.h>
-
-#include "MMA7660.h"
-#include "LM75B.h"
-
-#define XI_FEED_ID 123 // set Xively Feed ID (numerical, no quoutes
-#define XI_API_KEY "T4KXAH_dasgw1PWBPc3fdsfsdgsdy-dUc4ND0g" // set Xively API key (double-quoted string)
-
-#include "C12832_lcd.h"
-
-C12832_LCD lcd;
MMA7660 axl(p28, p27);
LM75B tmp(p28, p27);
-extern "C" {
-
-void user_printf( const char* buffer )
-{
- lcd.cls();
- lcd.locate( 0, 3 );
- lcd.printf( buffer );
- //wait( 1.0 );
-}
-
-void mbed_printf( const char* fmt, ... )
-{
- char buffer[ 64 ];
-
- va_list ap;
- va_start( ap, fmt );
- vsnprintf( buffer, 64, fmt, ap );
- va_end( ap );
-
- user_printf( buffer );
-}
-
-}
-
int main() {
- // set our device specific print function
- USER_PRINT = user_printf;
EthernetInterface eth;
@@ -54,7 +24,7 @@
if( s != NULL )
{
- mbed_printf( "Could not initialise. Will halt!\n" );
+ lcd_printf( "Could not initialise. Will halt!\n" );
exit( 0 );
}
@@ -62,12 +32,12 @@
if( s != NULL )
{
- mbed_printf( "Could not connect. Will halt!\n" );
+ lcd_printf( "Could not connect. Will halt!\n" );
exit( 0 );
}
else
{
- mbed_printf( "IP: %s\n", eth.getIPAddress() );
+ lcd_printf( "IP: %s\n", eth.getIPAddress() );
}
xi_feed_t feed;
@@ -101,7 +71,7 @@
return -1;
}
- mbed_printf("feed:%d datastreams:[%s,%s]\n", feed.feed_id,
+ lcd_printf("feed:%d datastreams:[%s,%s]\n", feed.feed_id,
orientation_datastream->datastream_id,
side_rotation_datastream->datastream_id);
@@ -121,22 +91,22 @@
switch( axl.getOrientation() ) {
case MMA7660::Down:
- mbed_printf("down %s\n",
+ lcd_printf("down %s\n",
(axl.getSide() == MMA7660::Front ? "front" : "back"));
xi_set_value_str( current_orientation, "down" );
break;
case MMA7660::Up:
- mbed_printf("up %s\n",
+ lcd_printf("up %s\n",
(axl.getSide() == MMA7660::Front ? "front" : "back"));
xi_set_value_str( current_orientation, "up" );
break;
case MMA7660::Right:
- mbed_printf("right %s\n",
+ lcd_printf("right %s\n",
(axl.getSide() == MMA7660::Front ? "front" : "back"));
xi_set_value_str( current_orientation, "right" );
break;
case MMA7660::Left:
- mbed_printf("left %s\n",
+ lcd_printf("left %s\n",
(axl.getSide() == MMA7660::Front ? "front" : "back"));
xi_set_value_str( current_orientation, "left" );
break;
@@ -147,9 +117,9 @@
xi_set_value_f32( current_temperature, tmp.read() );
- mbed_printf( "update...\n" );
+ lcd_printf( "update...\n" );
xi_feed_update(xi_context, &feed);
- mbed_printf( "done...\n" );
+ lcd_printf( "done...\n" );
wait( 15.0 );
}
--- a/mbed-libxively-6eca970.lib Wed Jun 26 11:55:36 2013 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/xively/code/mbed-libxively-6eca970/#82702e998d3f