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RT2501U/RT2571W Wi-Fi driver for ultra-embedded devices

This driver enables the use of the low-cost RT2501U/RT2571W SoftMAC Wi-Fi cards on platforms with very limited resources.

It is particularily well-suited for cost-sensitive consumer electronic devices. This driver is currently used in mass production with the Nabaztag/tag devices (aka Nabaztag V2).

Features

Industry-proven
Written in C
High portability
Low memory footprint
Low CPU resource usage
Integrates 802.11-compatible stack
Supports Client (managed) mode
Supports Access point mode
Supports WEP
Supports WPA-PSK

Typical environment

30MHz ARM7-based microcontroller
64kb Flash*
64kb RAM*
USB host controller (DMA-capable or with shared memory)
Any Wi-Fi card based on the Ralink RT2501U/RT2571W chipset
USB stack (not included)
TCP/IP stack (not included)

* taking a reasonable application into account. The driver itself uses 30kb Flash on ARM7 including an USB stack, a C library and debug features ; and RAM usage can be as low as 16kb, depending on application constraints.

Links

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