This directory contains 3 parts, usb device driver, application library and examples. This driver and applications support usb bus interface chip ch341/ch347/ch339.
ch341 implements full-speed usb to uart/spi/i2c/gpio/parport/etc., ch347 implements high-speed usb to uart/jtag/swd/spi/i2c/gpio/etc., ch339 implements high-speed usb hub/card reader/ethernet and usb to uart/jtag/spi/i2c/gpio/etc., This driver is not applicable to uart.
- Open "Terminal"
- Switch to "driver" directory
- Compile the driver using "make", you will see the module "ch34x_pis.ko" if successful
- Type "sudo make load" or "sudo insmod ch34x_pis.ko" to load the driver dynamically
- Type "sudo make unload" or "sudo rmmod ch34x_pis.ko" to unload the driver
- Type "sudo make install" to make the driver work permanently
- Type "sudo make uninstall" to remove the driver
Before the driver works, you should make sure that the ch341/ch347/ch339 device has been plugged in and is working properly, you can use shell command "lsusb" or "dmesg" to confirm that, VID of ch341/ch347/ch339 is [1A86].
If ch341/ch347/ch339 device works well, the driver will created devices named "ch34x_pis*" in /dev directory.
- Copy the dynamic library in "lib" directory to system default library path: "sudo cp libch347.so /usr/lib"
- Switch to "demo" directory
- Type "gcc ch347_demo.c -o app -lch347" to compile the demo
ch341 supports 3 modes:
mode0: [uart]
mode1: [spi + i2c + parallel + gpio]
mode2: [printer]
ch347t supports 4 modes:
mode0: [uart * 2] in vcp/cdc driver mode, the devices are named /dev/tty*
mode1: [spi + i2c + uart * 1] in vcp driver mode, the devices are named /dev/ch34x_pis* and /dev/tty*
mode2: [spi + i2c + uart * 1] in hid driver mode, the devices are named /dev/hidraw*
mode3: [jtag + uart * 1] in vcp driver mode, the devices are named /dev/ch34x_pis* and /dev/tty*
ch347f supports 1 mode:
mode0: [uart * 2 + spi + i2c + jtag] in vcp driver mode, the devices are named /dev/ch34x_pis* and /dev/tty*
ch339w supports many modes:
when the mode supports uart/jtag/spi/i2c/gpio in vcp driver mode, the devices are named /dev/ch34x_pis* and /dev/tty*, the details you can refer to the datasheet.
This driver only can be used with ch341 mode1, ch347t mode1/mode3, ch347f, several modes of ch339w.
This application library and examples can be used with all modes.
Any question, you can send feedback to mail: tech@wch.cn