So I've got a system that works with Indigo, SerialBridge, and XBee's (802.15.4) on both ends. Indigo runs an Applescript, which passes 4 bytes to SerialBridge, which sends them out over the Xbee. Works great.

Nowadays they have Xbee wi-fi modules (and the pin-alikes like the WiFly) that join your existing WiFi network. So I was hoping I could cut out a bunch of that complexity and just send those 4 bytes to the WiFly directly from a URL. As far as I can tell, that's what cURL does?

So I've got the WiFly module on my network at 10.0.1.13. It works, I can telnet to it from my Mac. But trying to figure out cURL is like beating my head against a wall. If I want to send these four bytes: 132, 0, 53, 42 to the Wifly at 10.0.1.13, could someone tell me the statement to use?

If cURL is the wrong tool and I should be doing something different, please tell me that too. Tangentially related, is there a way I can send these four bytes through telnet in Terminal? I've tried 132 <return> 0 <return>, etc, and it sends each byte but I guess it is too slow to register on the other end?

Thanks.

I'd do it with a python script - it can open a socket and can deal with bytes easily.

Ok, I'll try that. Googling found the following code:

Code: Select all

import socket

# Each address on the Internet is identified by an ip-address
# and a port number.
robot_ip_address = "192.168.0.12"  # Change to applicable
robot_port       = 3000            # Change to applicable

# Create a socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Connect to somewhere...
s.connect((robot_ip_address, robot_port))

# Send one character to the socket
s.send('D')

# Close the socket after use
s.close()

I'll have to figure out what to do with that.

Looks like a good start - Python is really quite straight-forward. And it has a lot of features built-in.