Download Implementing 802.11 with Microcontrollers: Wireless by Fred Eady PDF

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By Fred Eady

Instant networking is poised to have a major influence on communications, and the 802.11 general is to instant networking what Ethernet is to stressed networking. There are already over 50 million units utilizing the dominant IEEE 802.11 (essentially instant Ethernet) general, with astronomical progress envisioned over the subsequent 10 years. New functions are rising each day, with instant strength being embedded in every little thing from electrical meters to health facility sufferer monitoring platforms to safety units. This sensible reference courses readers throughout the instant expertise woodland, giving them the information, the and the software program essential to layout a instant embedded machine swiftly, inexpensively, and successfully. utilizing off-the-shelf microcontrollers from Microchip and Atmel, the writer presents step by step directions for designing the and firmware for a completely operational instant networking machine. The e-book offers a radical creation to 802.11 know-how and places it into standpoint opposed to the opposite instant general concepts. simply enough conception and arithmetic is supplied to provide the intensity of figuring out wanted for useful layout paintings. The ebook completely covers: * computing device instant Ethernet card creation and conception *Introduction to CompactFlash-to-microcontroller interfacing * enforcing the machine instant Ethernet card in an embedded surroundings furthermore, the publication encompasses a CDROM containing the entire code, schematics and courses essential to enforce embedded 802.11 instant networking. * Covers the most popular new embedded industry sector- instant networking * indicates designers the best way to get a better price and time through the use of microcontrollers of their embedded instant designs rather than pricey, complicated prefab forums * CD-ROM accompanying ebook includes all of the code, schematics and courses essential to start now!

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Extra info for Implementing 802.11 with Microcontrollers: Wireless Networking for Embedded Systems Designers

Example text

All of the source code you will see from here on out will be taken from the AirDrop-P and is based on the HI-TECH PICC-18 C compiler. 11b CompactFlash NIC driver source code is identical in most areas. 11b driver source code for both the AirDrop-P and AirDrop-A is included on the CD-ROM that accompanies this book. 11b driver is simply a combination of various CompactFlash card I/O routines coupled with PRISM commands. Driving a PRISM-based CompactFlash card is actually very easy to do and I don’t intend to add any complication to the process.

That means the 16-bit functionality of the CompactFlash connector will again go unused and thus will not be connected. 11b operation are connected and used. In a conscious effort to keep the AirDrop-A circuitry and driver code as simple as possible, a simple I/O interface identical to the AirDrop-P was adopted. Again, note that there is absolutely no “glue” logic on the AirDrop-A board and no special purpose ICs other than the RS-232 converter IC. 11b driver code directly to the AirDrop-A with very little modification.

19 Chapter 3 to allow the deployment of analog-to-digital conversion, pulse width modulation (PWM) and digital control. ) and communicate cooperatively with other wireless or wired devices on an Ethernet LAN. 1. The AirDrop-A power supply subsystem is an exact replica of the AirDrop-P power supply circuitry. 5 VDC. The song remains the same with the AirDrop-A as sung by the AirDrop-P. 11b CompactFlash card NIC, the Sipex SP3232 RS-232 converter IC and the ATmega128L microcontroller. Any +9 VDC center positive power brick that can power the AirDrop-P (400 mA minimum) is suitable for powering the AirDrop-A as well.

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