![]() Here we should disable the Hardware Flow Control.ACTION REQUIRED: StorSimple Data Manager, StorSimple Device Manager, StorSimple 1200, and StorSimple 8000 have reached their end of support. One of the reason would be the wrong setting of the serial tool, such as the Hardware Flow Control, etc. + rockchip,baudrate = /* Only 1152000 */įAQs 1.While using debug console, there is system startup information on the screen, but the keyboard cannot be used to input text? Rockchip,irq-mode-enable = /* If enable uart uses irq instead of fiq */ a/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi Subject: Reduce serial port baudrate to 115200Īrch/arm64/boot/dts/rockchip/rk3399-android.dtsi | 2 +-ĭiff -git a/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi +++ -96,7 +96,7 CONFIG_SDRAM_COMMON_CAP_DETECT=yĪpply the following patch to reduce baudrate in kernel Subject: Reduce baudrate to 115200 for compatibilityġ file changed, 1 insertion(+), 1 deletion(-)ĭiff -git a/configs/rk3399_defconfig b/configs/rk3399_defconfig Modify the minicom config file, reduce the baudrate to 115200.recompile the u-boot and kernel with a default baudrate set to 115200.The symptom is minicom prints out garbage/binary texts. Some of the USB-to-UART cable cannot work at such high speed 1500000. Boot your ROCK Pi 4 and you will see the serial console ouput.Click save icon to save the configuration as rockpi4 and click connect icon. ![]() Baud rate: choose custom and input 1500000.Click the Option menu and set the following:.Download and install the PL2303 Mac OS X Driver(Universal Binary Driver).Once finish the setting, press Open button to start. Write rockpi4 in the Saved Sessions column and press Save.įor category Connection-Serial, do the setting: And do the setting as follows:įor category Session, set serial line as COM3, speed ad 1500000, connection type as Serial. ![]() Launch the application Putty on your windows PC. Viewing the device manager you can find the COM number. Plug in the USB to TTL cable to you windows PC. Putty is also great serial tool that supports wide range baud rate. Now run minicom rockpi4 to use the config above and connects to the ROCK Pi 4 serial console. usb 1-6.4.3: FTDI USB Serial Device converter now attached to ttyUSB0įirst add current user to plugdev group to use minicom without sudo or root.Įdit your ~/.bashrc and add the following line with some default parameterĪlias minicom='minicom -w -t xterm -l -R UTF-8'Ĭreate and edit file ~/.minirc.rockpi4, add the following content: ftdi_sio 1-6.4.3:1.0: FTDI USB Serial Device converter detected usb 1-6.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 ![]() usb 1-6.4.3: New USB device found, idVendor=0403, idProduct=6001 usb 1-6.4.3: new full-speed USB device number 103 using xhci_hcd Plug in the USB to TTL cable, kernel `dmesg | tail` should show the following device: Minicom is the serial tool that supports wide range baud rate. The default serial setting for ROCK Pi 4 u-boot and kernel console is: If you know how to set custom baudrate on macOS, please add an item here to show your findings.Ĭonnect the USB to TTL serial cable as below.
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