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| 下载交叉工具链  下载官方内核 找到ch34x.c(内核源码里有)  配置makefile 编译出ko 装载ko 完成 
 #Makefile
ifeq ($(KERNELRELEASE), )
# KERNELDIR := /lib/modules/$(shell uname -r)/build
KERNELDIR := ~/Desktop/3399/kernel-stable
PWD :=$(shell pwd)
default:
        $(MAKE) -C $(KERNELDIR)  M=$(PWD)  
clean:
        rm -rf .tmp_versions Module.symvers *.mod.c *.o *.ko .*.cmd Module.markers modules.order
load:
        modprobe usbserial
        insmod ch34x.ko
unload:
        rmmod ch34x
else
        obj-m := ch34x.o
endif
# ifneq ($(KERNELRELEASE),)
# obj-m:=hello.o
# else
# KDIR :=/home/peng/linux-3.14
# PWD  :=$(shell pwd)
# all:
#  make -C $(KDIR) M=$(PWD) modules
# clean:
#  rm -f *.ko *.o *.mod.o *.symvers *.cmd  *.mod.c *.order
# endif
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