raspberry pi emmc module

/fat32mount /dev/sdb2 /mnt/ext4 Installation Module make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=/mnt/ext4 modules_install Copy the kernel and drive to the SD card # Back up the original KERNEL cp/mnt/fat32/$ KERNEL. img/mnt/fat32/$ KERNEL-backup.imgscripts/mkknlimg arch/arm/boot/zImage mnt/fat32/$ KERNEL. imgcp arch/arm/boot/dts /*. dtb/mnt/fat32/cp arch/arm/boot/dts/overlays /*. dtb */mnt/fat32/overlays/cp arch/arm/boot/dts/over

The hand has a CCD Camera (Barcode reader/scanner Module), it is through RS232 communication, with the RS232 to the USB adapter to connect the Raspberry Pi, you can complete the hardware connection. For serial communication, it can be realized by pyserial.First, install Pyserial:Download the latest version of the installation package from Https://pypi.python.org/

Web.config.smtp_starttls = TrueSend_from = ' [email protected] ' # #发送的邮件Web.sendmail (Send_from, send_to, subject, body, CC=CC, BCC=BCC)Return 1 #passExcept Exception, E:Print EReturn-1 #failIf __name__== ' __main__ ':F=file ('/home/pi/desktop/ip.log ') F1=f.read ()F.close ()send_to = [' [email protected] ']Subject = ' Connection check 'BODY = ' Hello, xxxx! I am still alive. I'll send you a email in another hour. ', F1Send_mail (send_to, subject, bo

. 4 3 Make sudo Make InstallCreate a soft link. this way, you can start Python 3.4.1 by playing Python3.The first line removes existing soft links to Python 3.2.3.The second line creates the/usr/bin/python3 this soft link to the Python 3.4.1.The third line creates a soft link for the PIP. PIP has been officially integrated into the python3.4, and it is convenient to install the third-party module on the PyPI.1 sudo rm /usr/bin/python32sudoln -s/opt/

Raspberry Pi native Serial port default for console output, if you want to use in your own program need to shut down the system to occupy this serial port. The method is configured for Rasp-config, or directly modifies the/boot/cmdline.txt #dwc_otg. lpm_enable=0 console=tty1 console=serial0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator= Deadline Fsck.repair=yes Rootwai Dwc_otg.lpm_enable=0 console=tty

() Camera.close () Gpio.output (G PIO. Low) def setup (): Gpio.setmode (GPIO). BOARD) # Numbers GPIOs by physical location Gpio.setup (Gpin, GPIO. # Set Green Led Pin mode to Output Gpio.setup (Rpin, GPIO). # Set Red Led Pin mode to Output Gpio.setup (GPIO). Out) Gpio.setup (Btnpin, GPIO. In, Pull_up_down=gpio. PUD_UP) # Set Btnpin ' s mode is input, and the pull-up-to-level (3.3V) Gpio.add_event_detect (Btnpin, GPIO. BOTH, Callback=detect, bouncetime=200) def Led (x): if x = = 0:gpio.ou

editing software to edit the module source code, my is hello.c #include 2, edit makefile file, I this relatively simple is used for testing. Obj-m: = hello.o 3, compile the module in the command line. -C parameter specifies the kernel source tree location, M is the module source directory. Modules didn't figure out what it was for. Make-c ~/linux m=/home/