NFC532 模块移植到IMX6上

杨帆！起航！

linux 上的程序 NFC 安装

Here is a small howto for ubuntu 12.04 TLS using the git version. I hope it may be helpful to someone, I was strugling all day...
$ sudo apt-get install autoconf automake libtool
$ sudo apt-get install libusb-0.1-4 libusb-dev libpcsclite1 libpcsclite-dev libccid pcscd
$ sudo apt-get install git
$ git clone http://code.google.com/p/libnfc/
$ cd libnfc
$ mkdir /etc/nfc
$ mkdir /etc/nfc/devices.d/
$ sudo nano /etc/nfc/devices.d/pn532_via_uart2usb.conf
paste the following 5 lines into the pn532_via_uart2usb.conf:
## Typical configuration file for PN532 board (ie. microbuilder.eu / Adafruit) device
name = "Adafruit PN532 board via UART"
connstring = pn532_uart:/dev/ttyUSB0
allow_intrusive_scan = true
log_level = 3
$ sudo autoreconf -vis
$ ./configure --prefix=/usr --with-drivers=pn532_uart --sysconfdir=/etc
$ sudo make clean
$ sudo make
$ sudo make install all
plugin your ftdi usb
$ cd examples
$ sudo ./nfc-poll

需要建 /etc/nfc/devices.d/pn532_via_uart2usb.conf 这个文件
摘至 libnfc 的开发论坛 ，具体链接没有记下来


移植到arm
http://blog.csdn.net/douniwan5788/article/details/7551499
./configure --host=arm-linux --enable-serial-autoprobe  --with-drivers=pn532_uart --enable-static --prefix=/usr/local/arm/4.3.2/arm-none-linux-gnueabi/  




1、下载libnfc源码

svn checkout http://libnfc.googlecode.com/svn/trunk/ libnfc-read-only  
/**可以不做*/
2、生成configure
/**/
autoreconf -is  

3、配置交叉编译 （前提是交叉编译环境好配置好） 这里开始

/*******cjf  配置************/
./configure --prefix=/usr/local/nfc --with-drivers=pn532_uart --sysconfdir=/usr/local/etc --host=arm-none-linux-gnueabi --enable-static --enable-serial-autoprobe
arm-none-linux-gnueabi-gcc -static nfc-poll.c -o nfc-poll -L/usr/local/nfc/lib -lnfc
/*****************/
--host 指明目标平台 arm-linux
--enable-static 静态链接以减少依赖库带来的各种麻烦
--prefix 这里我填的是 交叉编译工具的路径，安装到这里，以后编译arm上依赖libnfc的程序时才不会提示无头文件
--sysconfdir=XXX为etc路径，本案例为/usr/local/etc

root@uptech:/usr/local/etc/nfc/devices.d# pwd
/usr/local/etc/nfc/devices.d
root@uptech:/usr/local/etc/nfc/devices.d# ls
pn532_via_uart2usb_old.conf

/*其他配置*/
./configure --host=arm-linux --enable-serial-autoprobe  --with-drivers=pn532_uart --enable-static --prefix=/usr/local/arm/4.3.2/arm-none-linux-gnueabi/  
./configure --prefix=/usr/nfc/ --with-drivers=pn532_uart --sysconfdir=/etc --host=/usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi --enable-static --enable-serial-autoprobe/**/
/********************/
4、编译、安装

[plain] view plaincopy
make ; make install  
//5、将编译出的库考到arm板里即可使用了  这里需要静态编译哦 所以不需要这一步


编译应用程序
arm-none-linux-gnueabi-gcc -static quick_start_example1.c -o nfc-q -L/usr/local/nfc/lib -lnfc

如果出现 错误
130|root@sabresd_6dq:/data/media/0 # ./nfc-q
./poll uses libnfc 1.7.1
poll: ERROR: Unable to open NFC device.
1|root@sabresd_6dq:/data/media/0 #
创建配置文件
/usr/local/etc/nfc/devices.d/pn532_via_uart2usb_old.conf
内容如下
## Typical configuration file for PN532 board (ie. microbuilder.eu / Adafruit) device
name = "Adafruit PN532 board via UART"
connstring = pn532_uart:/dev/ttyS2
allow_intrusive_scan = true
log_level = 3
可柑橘自己的需求来配置
/*其他编译 下面为makefile*/
动态
BIN                = demo
OBJS                = demo.o nfc-utils.o

CC                = arm-poky-linux-gnueabi-gcc -march=armv7-a -mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a9 --sysroot=/opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi
STRIP                = arm-poky-linux-gnueabi-strip
CFLAGS                = -O2

all:  clean $(BIN)

$(BIN):                $(OBJS)
                $(CC) $(CFLAGS)        -o $@ $(OBJS)  -L/usr/libnfc/lib -l:libnfc.so.5
                $(STRIP) $@

clean:
        -rm -f $(BIN) *.o
静态编译


$(CC) $(CFLAGS) -static -o $@ $(OBJS)  -L/usr/local/arm/4.3.2/arm-none-linux-gnueabi/lib -l:libnfc.a



arm-none-linux-gnueabi-gcc -static -o main quick_start_example1.c -L/usr/local/arm/4.3.2/arm-none-linux-gnueabi/lib/ -lnfc


arm-none-linux-gnueabi-gcc -static quick_start_example1.c -o nfc-q -L/usr/local/nfc/lib -lnfc

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