Rockpi4/dev/serial-console - Revision history

Ingram Kim at 08:27, 11 November 2022

2022-11-11T08:27:21Z

Ingram Kim at 08:21, 11 November 2022

2022-11-11T08:21:43Z

Hipboi: Undo revision 8048 by Hipboi (talk)

2022-06-07T08:39:57Z

Undo revision 8048 by Hipboi (talk)

Hipboi: Redirected page to Rockpi4/dev/use-uart2-as-application-uart

2022-06-07T08:37:03Z

Redirected page to Rockpi4/dev/use-uart2-as-application-uart

Show changes

Jack-ma at 01:55, 26 May 2021

2021-05-26T01:55:47Z

Hipboi: Undo revision 5584 by Hipboi (talk)

2020-08-25T07:40:39Z

Undo revision 5584 by Hipboi (talk)

Hipboi: /* Troubleshooting */

2020-08-25T07:40:00Z

‎Troubleshooting

Stephen at 04:42, 8 February 2020

2020-02-08T04:42:08Z

Stephen: /* Windows */

2018-12-20T01:53:21Z

‎Windows

Hipboi at 01:38, 20 December 2018

2018-12-20T01:38:06Z

@@ Line 135: / Line 135: @@
 * Download the corresponding BSP
 * Apply the following patches
-* recompile the u-boot and kernel with a default baudrate set to 115200.
+* recompile the u-boot and kernel with a default baudrate set to 115200

← Older revision		Revision as of 08:21, 11 November 2022
Line 129:		Line 129:
	[[File:Coolterm_output.png]]		[[File:Coolterm_output.png]]

		+	=== Reduce serial port baudrate ===
		+	Some of the USB-to-UART cable cannot work at such high speed 1500000. (For example, Sillicon Labs CP2102). The symptom is minicom prints out garbage/binary texts.

		+	To fix that we need to
		+	* Download the corresponding BSP
		+	* Apply the following patches
		+	* recompile the u-boot and kernel with a default baudrate set to 115200.
		+
		+
		+
		+	Patch for baudrate reduction in u-boot
		+	Subject: [PATCH 1/1] Reduce baudrate to 115200 for compatibility
		+
		+	---
		+	configs/rk3399_defconfig \| 2 +-
		+	1 file changed, 1 insertion(+), 1 deletion(-)
		+
		+	diff --git a/configs/rk3399_defconfig b/configs/rk3399_defconfig
		+	index ae4d35572b..25b60d2692 100755
		+	--- a/configs/rk3399_defconfig
		+	+++ b/configs/rk3399_defconfig
		+	@@ -96,7 +96,7 @@ CONFIG_SDRAM_COMMON_CAP_DETECT=y
		+	CONFIG_SDRAM_COMMON_OSREG=y
		+	CONFIG_SDRAM_COMMON_MSCH_RK3399=y
		+	CONFIG_DM_RESET=y
		+	-CONFIG_BAUDRATE=1500000
		+	+CONFIG_BAUDRATE=115200
		+	CONFIG_DEBUG_UART_BASE=0xFF1A0000
		+	CONFIG_DEBUG_UART_CLOCK=24000000
		+	CONFIG_DEBUG_UART_SHIFT=2
		+	--
		+
		+
		+	Apply the following patch to reduce baudrate in kernel
		+	Subject: [PATCH 1/1] Reduce serial port baudrate to 115200
		+
		+	---
		+	arch/arm64/boot/dts/rockchip/rk3399-android.dtsi \| 2 +-
		+	1 file changed, 1 insertion(+), 1 deletion(-)
		+
		+	diff --git a/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi
		+	index 95942d278058..243fdfa49e0d 100644
		+	--- a/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi
		+	+++ b/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi
		+	@@ -76,7 +76,7 @@
		+	rockchip,serial-id = <2>;
		+	rockchip,wake-irq = <0>;
		+	rockchip,irq-mode-enable = <0>; /* If enable uart uses irq instead of fiq */
		+	- rockchip,baudrate = <1500000>; /* Only 115200 and 1500000 */
		+	+ rockchip,baudrate = <115200>; /* Only 115200 and 1500000 */
		+	pinctrl-names = "default";
		+	pinctrl-0 = <&uart2c_xfer>;
		+	interrupts = <GIC_SPI 150 IRQ_TYPE_LEVEL_HIGH 0>;
		+	--

← Older revision		Revision as of 08:39, 7 June 2022
Line 1:		Line 1:
−	~~#redirect~~ [[Rockpi4/dev/use-uart2-as-application-uart]]	+	{{rockpi4_header}}
		+	{{Languages\|rockpi4/dev/serial-console}}
		+	[[rockpi4 \| ROCK Pi 4]] > [[rockpi4/dev \| Development]] > [[rockpi4/dev/serial-console \| Serial Console]]
		+
		+	ROCK Pi 4 exports a dedicated uart(UART2) for serial console on GPIO PIN 6/8/10, which can access the low level debug message. If you want to use UART2 as application uart, check this [[Rockpi4/dev/use-uart2-as-application-uart \| guide]].
		+
		+	=== Requirement ===
		+
		+	* ROCK Pi 4
		+	* USB Type-C power adapter and USB Type-C charging data cable
		+	* Host PC with Windows or Linux
		+	* USB to TTL serial cable
		+	** The definition of each pin of USB to TTL cable is showing like this:
		+
		+	[[File:usb2ttl-cable-definition.jpeg \| 500px ]]
		+
		+	==== Note ====
		+
		+	* The default baudrate of ROCK Pi 4 is 1500000(1.5Mbps), please check if your USB to TTL cable support 1.5Mbps baudrate. Some model of [https://www.silabs.com/products/interface/usb-bridges CP210X] and [http://www.prolific.com.tw/US/ShowProduct.aspx?pcid=41 PL2303x] have baudrate limitation, please check the specified model. We also tested that some cheap PL2303x based cable does not work well. Make sure choose a high quality one. The instructions below use a [http://www.ftdichip.com/Products/ICs/FT232R.htm FT232RL] based cable.
		+
		+	* It seems that the serial tool on macOS platform can not support custom baudrate such as 1.5Mbps due to driver restriction. If you know how to set custom baudrate on macOS, please add an item here to show your findings.
		+
		+	=== Connection ===
		+
		+	Connect the USB to TTL serial cable as below. '''Don't connect the red wire.'''
		+
		+	{\| class="wikitable"
		+	\|-
		+	! ROCK Pi 4 \|\| <---> \|\| USB to TTL cable
		+	\|-
		+	\| RX(pin 10) \|\| <---> \|\| Green wire
		+	\|-
		+	\| TX(pin 8) \|\| <---> \|\| White wire
		+	\|-
		+	\| GND(pin 6) \|\| <---> \|\| Black wire
		+	\|}
		+
		+	[[File:serial-connection.jpeg \| 500px ]]
		+
		+	=== Serial setting on host PC ===
		+
		+	The default serial setting for ROCK Pi 4 u-boot and kernel console is:
		+
		+	baudrate: 1500000
		+	data bit: 8
		+	stop bit: 1
		+	parity : none
		+	flow control: none
		+
		+	==== Linux ====
		+
		+	Minicom is the serial tool that supports wide range baud rate.
		+
		+	Install minicom:
		+
		+	sudo apt-get update
		+	sudo apt-get install minicom
		+
		+	Plug in the USB to TTL cable, kernel `dmesg \| tail` should show the following device:
		+
		+	[1036835.654076] usb 1-6.4.3: new full-speed USB device number 103 using xhci_hcd
		+	[1036835.755730] usb 1-6.4.3: New USB device found, idVendor=0403, idProduct=6001
		+	[1036835.755732] usb 1-6.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
		+	[1036835.755733] usb 1-6.4.3: Product: USB <-> Serial
		+	[1036835.755734] usb 1-6.4.3: Manufacturer: FTDI
		+	[1036835.756728] ftdi_sio 1-6.4.3:1.0: FTDI USB Serial Device converter detected
		+	[1036835.756750] usb 1-6.4.3: Detected FT232BM
		+	[1036835.757195] usb 1-6.4.3: FTDI USB Serial Device converter now attached to ttyUSB0
		+
		+	'''/dev/ttyUSB0''' is our device here.
		+
		+	===== Setup minicom=====
		+
		+	First add current user to plugdev group to use minicom without sudo or root.
		+
		+	sudo usermod -a -G plugdev $USER
		+
		+	Edit your '''~/.bashrc''' and add the following line with some default parameter
		+
		+	alias minicom='minicom -w -t xterm -l -R UTF-8'
		+
		+	Login to a new terminal to take effect.
		+
		+	Create and edit file '''~/.minirc.rockpi4''', add the following content:
		+
		+	pu port /dev/ttyUSB0
		+	pu baudrate 1500000
		+	pu bits 8
		+	pu parity N
		+	pu stopbits 1
		+	pu rtscts No
		+
		+	Now run '''minicom rockpi4''' to use the config above and connects to the ROCK Pi 4 serial console.
		+
		+	==== Windows ====
		+
		+	Putty is also great serial tool that supports wide range baud rate.
		+
		+	Plug in the USB to TTL cable to you windows PC. Viewing the '''device manager''' you can find the '''COM number'''. Here it is '''COM3'''.
		+
		+	Launch the application Putty on your windows PC. And do the setting as follows:
		+
		+	For category '''Session''', set '''serial line''' as COM3, '''speed''' ad 1500000, '''connection type''' as Serial.
		+
		+	Write '''rockpi4''' in the '''Saved Sessions''' column and press '''Save'''.
		+
		+	[[File:putty-setting-session.jpg \| 500px ]]
		+
		+	For category '''Connection---Serial''', do the setting:
		+
		+	[[File:putty-setting-serial.jpg \| 500px ]]
		+
		+	Once finish the setting, press '''Open''' button to start.
		+
		+	==== macOS ====
		+
		+	* Download and install the [http://www.prolific.com.tw/UserFiles/files/PL2303HXD_G_Mac%20Driver_v2_1_0_20210311.zip PL2303 Mac OS X Driver](Universal Binary Driver)
		+	* Install [https://freeware.the-meiers.org/previous/CoolTermMacUniversal147.zip CoolTerm](Universal Binary)
		+	* Click the Option menu and set the following:
		+	** Port: select usbserial-xxx
		+	** Baud rate: choose custom and input 1500000
		+	** No flow control nor DTR/RTS
		+
		+	[[File:Coolterm_serialport_setting.png]]
		+
		+	* Click save icon to save the configuration as rockpi4 and click connect icon
		+	* Boot your ROCK Pi 4 and you will see the serial console ouput
		+
		+	[[File:Coolterm_output.png]]
		+
		+
		+
		+
		+
		+	=== FAQs ===
		+
		+	====1.While using debug console, there is system startup information on the screen, but the keyboard cannot be used to input text?====
		+
		+	One of the reason would be the wrong setting of the serial tool, such as the Hardware Flow Control, etc. Here we should disable the Hardware Flow Control.
		+
		+	=== Troubleshooting ===
		+	* Post your issue at the forum: https://forum.radxa.com/c/dev

← Older revision		Revision as of 01:55, 26 May 2021
Line 112:		Line 112:

	Once finish the setting, press '''Open''' button to start.		Once finish the setting, press '''Open''' button to start.
		+
		+	==== macOS ====
		+
		+	* Download and install the [http://www.prolific.com.tw/UserFiles/files/PL2303HXD_G_Mac%20Driver_v2_1_0_20210311.zip PL2303 Mac OS X Driver](Universal Binary Driver)
		+	* Install [https://freeware.the-meiers.org/previous/CoolTermMacUniversal147.zip CoolTerm](Universal Binary)
		+	* Click the Option menu and set the following:
		+	** Port: select usbserial-xxx
		+	** Baud rate: choose custom and input 1500000
		+	** No flow control nor DTR/RTS
		+
		+	[[File:Coolterm_serialport_setting.png]]
		+
		+	* Click save icon to save the configuration as rockpi4 and click connect icon
		+	* Boot your ROCK Pi 4 and you will see the serial console ouput
		+
		+	[[File:Coolterm_output.png]]
		+
		+
		+
		+

	=== FAQs ===		=== FAQs ===

← Older revision		Revision as of 07:40, 25 August 2020
Line 120:		Line 120:

	=== Troubleshooting ===		=== Troubleshooting ===
−	* Post your issue at the forum: https://forum.radxa.com/c/~~rockpiX/win~~	+	* Post your issue at the forum: https://forum.radxa.com/c/dev

@@ Line 5: / Line 5: @@
 ROCK Pi 4 exports a dedicated  serial console, which can access the low level debug message.
-== Requirement ==
+=== Requirement ===
 * ROCK Pi 4
@@ Line 15: / Line 15: @@
 [[File:usb2ttl-cable-definition.jpeg | 500px ]]
-=== Note ===
+==== Note ====
 * The default baudrate of ROCK Pi 4 is 1500000(1.5Mbps), please check if your USB to TTL cable support 1.5Mbps baudrate. Some model of [https://www.silabs.com/products/interface/usb-bridges CP210X] and [http://www.prolific.com.tw/US/ShowProduct.aspx?pcid=41 PL2303x]  have baudrate limitation, please check the specified model. We also tested that some cheap PL2303x based cable does not work well. Make sure choose a high quality one. The instructions below use a [http://www.ftdichip.com/Products/ICs/FT232R.htm FT232RL] based cable.
@@ Line 21: / Line 21: @@
 * It seems that the serial tool on macOS platform can not support custom baudrate such as 1.5Mbps due to driver restriction. If you know how to set custom baudrate on macOS, please add an item here to show your findings.
-== Connection ==
+=== Connection ===
 Connect the USB to TTL serial cable as below. '''Don't connect the red wire.'''
@@ Line 38: / Line 38: @@
 [[File:serial-connection.jpeg | 500px ]]
-== Serial setting on host PC ==
+=== Serial setting on host PC ===
 The default serial setting for ROCK Pi 4 u-boot and kernel console is:
@@ Line 48: / Line 48: @@
      flow control: none
-=== Linux ===
+==== Linux ====
 Minicom is the serial tool that supports wide range baud rate.
@@ Line 70: / Line 70: @@
 '''/dev/ttyUSB0''' is our device here.
-==== Setup minicom====
+===== Setup minicom=====
 First add current user to plugdev group to use minicom without sudo or root.
@@ Line 93: / Line 93: @@
 Now run '''minicom rockpi4''' to use the config above and connects to the ROCK Pi 4 serial console.
-=== Windows ===
+==== Windows ====
 Putty is also great serial tool that supports wide range baud rate.
@@ Line 113: / Line 113: @@
 Once finish the setting, press '''Open''' button to start.
-== Troubleshooting ==
+=== FAQs ===
 * Post your issue at the forum: https://forum.radxa.com/c/dev

@@ Line 101: / Line 101: @@
 Launch the application Putty on your windows PC. And do the setting as follows:
-[[File:putty-setting.jpg | 500px ]]
+For category '''Session''', set '''serial line''' as COM3, '''speed''' ad 1500000, '''connection type''' as Serial.
-Once finish the setting, press Open button to start.
+Write '''rockpi4''' in the '''Saved Sessions''' column and press '''Save'''.
 == Troubleshooting ==
 * Post your issue at the forum: https://forum.radxa.com/c/dev

← Older revision		Revision as of 01:38, 20 December 2018
Line 104:		Line 104:

	Once finish the setting, press Open button to start.		Once finish the setting, press Open button to start.
		+
		+	== Troubleshooting ==
		+	* Post your issue at the forum: https://forum.radxa.com/c/dev