Add usart driver for kernel serial.c
Delete serial.c and serial.h at /
Signed-off-by: wangzw <wangzw@yuettak.com>
"complete usart dma"
Merge serial driver, and fix some problem
Fix usart driver for usart2 and usart3
1. usart2 support int rx and dma tx
2. usart3 support int rx and dma tx
Fix some bug for serial device driver
Fix some bug
1. compile for keil
2. dma tx ringbuffer
Fix some bug for keil compiler
changes ".gitigonre" need to ignore the file
build spi_test branch
cancel README doc ignore
untrack project_uvopt.bak
untrack project_uvopt.bak
Merge branch 'develop' into spi_test

Conflicts:
	.gitignore
	project_uvopt.bak
Merge branch 'develop' into gpio_test

Conflicts:
	.gitignore
	project.uvproj
	serial_bk.h
	stm32f10x_it.c
	usart.c
	usart.h

Modify c-style for goio
Rename gpiodevice.c to gpio.c
Rename gpiodevice.h to gpio.h
Rename gpiopin.c to gpio_pin.c
Rename gpiopin.h to gpio_pin.h
change gpio intput fun
Add rx_indicate for pin value
Add pwm function to gpio driver
Fix usart interupt rx error
Merge branch 'serial_test' into develop