Compare smart home realtek rtl8711 cheap wifi direct wifi module

Introductions for cheap wifi direct wifi module :

CP830 is a highly integrated module with low power 802.11n Wireless LAN(WLAN) network controller. It combines anARM-CM3(166MHz)MCU, WLAN MAC, a 1T1R capable WLAN baseband, and RF function. It also provides a bunch of configurable GPIOs which are configured as digital peripherals fordifferent applications and control usage.

CP830 integrates internal memories for complete WIFI protocol functions. The embedded memory configuration alsoprovides simple application developments.

Host Interface:

2 x UART(max baud rate 4MHz)

3x I2C

1 x I2S

2 x PCM

2x SPI

1x SDIO Slave

4x PWM

1x ADC and 1x DAC

21 x GPIO 

Build and Debug Environment - IAR

Specification for cheap wifi direct wifi module :

General

•  22.25mm x 19mm x 1.6mm
•  CMOS MAC, Baseband PHY, and RF in the module for 802.11b/g/n compatible WLAN
•  Complete 802.11n solution for 2.4G band
•  150Mbps receive PHY rate and 150Mbps transmit PHY rate using 40MHz bandwidth
•  Standards Supported
•  802.11b/g/n compatible WLAN
•  802.11e QoS Enhancement(WMM)
•  802.11i(WPA,WP2). Open, shared key, and pair-wise key authentication services
•  WiFi Direct support
•  WiFi WPS support
•  Light Weight TCP/IP protocol

WLAN PHY Features

•  802.11n OFDM
•  One Transmit and one Receive path(1T1R)
•  20MHz and 40MHz bandwidth transmission
•  Short Guard Interval(400ns)
•  Maximum data rate 54Mbps in 802.11g and 150Mbps in 802.11n