Add TWI support
OSR selection issue fix.
Add ffconf.h to platform board.
Non blocking put and get char function will return a status.
Modify code order to easy debug.
Uart nonblocking put and get char will return a status.
Add put and get char nonblocking and put status check before put and get char from uart.
put and get char non blocking will return a status.
Add put and get char nonblocking and check status before put and get char from/to uart.
Add dependency.
Add TWI support.
Add sysdelay support.
Add correct linker file for 64K MD STM32F10x.
Comment clear BSS
Actualize STM32F4 and STM32F10x example projects to last modifications in SDK.
Begin to add support for TDA19988 HDMI interface device.