TCPIP and WIFI over a simple serial interface

Sjaak tipped us to the MCW1001A, a TCP/IP stack and WiFi management IC with a simple serial interface. It stands between your project and a MRF24WB0MB WiFI module so you don’t have to mess with a full TCP/IP network implementation.

MCW1001A is a companion chip to the MRF24WB0 802.11 module. It provides simple socket based method of sending and receiving data from the MRF24WB0 802.11 module. The MCW1001A has an on-board TCP/IP stack and 802.11 connection manager to simplify the connection between a wireless network and the TCP/IP stack management. After the initial configuration is set, the MCW1001A can access the MRF24WB0 802.11 module to connect to a network and send/receive serial data over a simple UART interface from the Host controller.

Via the forum.

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  1. I wonder what PIC this is – I’m 99.9999% sure this is a similar case to the MCP2200, just with a different part. I’m thinking a PIC24FJxx-series part based on the pinout, but that’s just from memory.

    1. Thanks Tier, great part suggestion! One of the reason I love this/other hacker sites is I find an an interesting article and the “group think” allows me to expand my engineering knowledge.

    2. A CC3000 will set you back $199 compared to a combined cost of $27 for the two chip solution. The two chip solution suddenly looks a whole lot more appealing.

      1. $199 is for a development kit, not a module. The current Murata and LSR modules are both sub-$30.

  2. yup, confirmed by checking the datasheets, its a pic18F in disguise…PGD pin is 28, PGC is 27, MCLR iis1…so if anyone gets a hold of these buggers we can probably get the part number :D

  3. What is the point in this when you can run native V-USB on an AVR or use the native USB interface on a PIC uC to connect it to a cheap Cisco router modified with DD-WRT?

    Further it is possible to do a simple 3 or 4 wire UART interface to the serial onboard the router with some solder and a little patience.

    Try running ser2net as a solution to bridge the serial signals to IP. Also consider the possibility of running Optware on an external drive.

    Installing a simple driver for an FTDI serial chip is no trouble either if you want to go the store bought route. Any way one goes there are better solutions than this.

    Even an RFM 12 module or an RN41/RN42 Bluetooth modem would be better for serial.

      1. Most of us already have wireless routers in our homes. Integrating a project into an existing piece of infrastructure allows for a reduction of space anyway. If you have the time consider the unused USB leads on the Atheros and Broadcom BCM series chipsets inside the routers. Get some solder and have a field day.

        Now try AVRSH. Let your open source flow. Explore bootloaders, FemtoOS, and piece together the infinite possiblilties.

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