setfeature增加参数
Merge branch 'master' of https://github.com/RT-Thread/realtouch-stm32f4
当发送数据为最大包长整数倍时发送0长度包
取消对非控制传输自动发送0长度包
返回成功传输的字节数
fixed http http_connect() issues by weiyuliang: http://www.rt-thread.org/phpBB3/viewtopic.php?f=28&t=2349
fixed w25qxx_flash_write() bug by ourdsp: http://www.rt-thread.org/phpBB3/viewtopic.php?f=28&t=2969
fixed the struct packed issues by aishiqi: http://www.rt-thread.org/phpBB3/viewtopic.php?f=28&t=2608
fixed spi nor flash driver issues:
define w25qx's sector/page
Merge pull request #17 from geniusgogo/w25q

define w25qx's sector/page
improve the i2c protocol implementation according to the reference manual
fix wm8967 codec master mode