What is the difference between ttys0, ttyUSB0 and ttyAMA0 in Linux?
I want to know the difference between ttyS0, ttyUSB0 and ttyAMA0 on Linux.
linux tty
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
asked Sep 2 '16 at 7:06
user5671087
31112
add a comment |
I want to know the difference between ttyS0, ttyUSB0 and ttyAMA0 on Linux.
linux tty
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
asked Sep 2 '16 at 7:06
user5671087
31112
1
You can look up many device types in the kernel docs: git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/…
– phg
Sep 2 '16 at 7:30
add a comment |
I want to know the difference between ttyS0, ttyUSB0 and ttyAMA0 on Linux.
linux tty
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
asked Sep 2 '16 at 7:06
user5671087
31112
I want to know the difference between ttyS0, ttyUSB0 and ttyAMA0 on Linux.
linux tty
linux tty
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
asked Sep 2 '16 at 7:06
user5671087
31112
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
asked Sep 2 '16 at 7:06
user5671087
31112
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
edited Sep 2 '16 at 7:18
Satō Katsura
10.9k11534
10.9k11534
asked Sep 2 '16 at 7:06
user5671087
31112
asked Sep 2 '16 at 7:06
user5671087
31112
asked Sep 2 '16 at 7:06
user5671087
31112
31112
1
You can look up many device types in the kernel docs: git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/…
– phg
Sep 2 '16 at 7:30
add a comment |
1
You can look up many device types in the kernel docs: git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/…
– phg
Sep 2 '16 at 7:30
1
1
You can look up many device types in the kernel docs: git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/…
– phg
Sep 2 '16 at 7:30
You can look up many device types in the kernel docs: git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/…
– phg
Sep 2 '16 at 7:30
add a comment |
2 Answers
2
active
oldest
votes
ttyS0is the device for the first UART serial port on x86 and x86_64 architectures. If you have a PC motherboard with serial ports you'd be using attySnto attach a modem or a serial console.
ttyUSB0is the device for the first USB serial convertor. If you have an USB serial cable you'd be using attyUSBnto connect to the serial port of a router.
ttyAMA0is the device for the first serial port on ARM architecture. If you have an ARM-based TV box with a serial console and running Android or OpenELEC, you'd be using attyAMAnto attach a console to it.
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
1
There's more at unix.stackexchange.com/a/127260/5132 .
– JdeBP
Sep 2 '16 at 17:37
add a comment |
ttyS0
What you get on host when you connect to target with this:
Source
This port is not present on most laptops or small devboards, but is still present on desktops, and is very convenient for OS developers.
You also get it with qemu -device isa-serial.
ttyUSB0
What you get on host when using either of:
And this is how I connect the GPIOs of my Raspberry Pi to my laptop!
And another RPI connector type:
Source
A concrete RPI example at: https://stackoverflow.com/questions/22054578/how-to-run-a-program-without-an-operating-system/32483545#32483545
ttyAMA0
An ARM thing as mentioned by Sato.
Haven't run into that for real hardware, will post pics when I do. I think I would be able to connect my desktop with a serial port to my RPI with that interface: https://raspberrypi.stackexchange.com/questions/69697/what-is-dev-ttyama0
But I've used it with QEMU: https://github.com/buildroot/buildroot/tree/27d7ef126bc7f4eb1a757128466befa11245bbfd/board/qemu/arm-versatile
It seems that AMA is shortened form of AMBA? https://www.raspberrypi.org/forums/viewtopic.php?t=8075 But why would they shorten a 4 character acronym?!
The only interesting Linux kernel hits are under: https://github.com/torvalds/linux/blob/v4.16/drivers/tty/serial/amba-pl011.c#L2488 so it seems to be strictly linked to the PL011: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0183g/index.html which is a UART controller licensed by ARM, which I think is the dominating implementation.
ttySAC0
Kamil reported that his Samsung Artik 710, so another one for the collection.
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
What about ttySAC0? I have this on ARM64 architecture Samsung Artik 710 device.
– Kamil
Nov 6 at 0:36
@Kamil OK, a new one for me then :-) How do you connect to it from host to seettySAC0? Which cable? Send a photo if you can.
– Ciro Santilli 新疆改造中心 六四事件 法轮功
Nov 6 at 8:36
add a comment |
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2 Answers
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2 Answers
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ttyS0is the device for the first UART serial port on x86 and x86_64 architectures. If you have a PC motherboard with serial ports you'd be using attySnto attach a modem or a serial console.
ttyUSB0is the device for the first USB serial convertor. If you have an USB serial cable you'd be using attyUSBnto connect to the serial port of a router.
ttyAMA0is the device for the first serial port on ARM architecture. If you have an ARM-based TV box with a serial console and running Android or OpenELEC, you'd be using attyAMAnto attach a console to it.
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
1
There's more at unix.stackexchange.com/a/127260/5132 .
– JdeBP
Sep 2 '16 at 17:37
add a comment |
ttyS0is the device for the first UART serial port on x86 and x86_64 architectures. If you have a PC motherboard with serial ports you'd be using attySnto attach a modem or a serial console.
ttyUSB0is the device for the first USB serial convertor. If you have an USB serial cable you'd be using attyUSBnto connect to the serial port of a router.
ttyAMA0is the device for the first serial port on ARM architecture. If you have an ARM-based TV box with a serial console and running Android or OpenELEC, you'd be using attyAMAnto attach a console to it.
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
1
There's more at unix.stackexchange.com/a/127260/5132 .
– JdeBP
Sep 2 '16 at 17:37
add a comment |
ttyS0is the device for the first UART serial port on x86 and x86_64 architectures. If you have a PC motherboard with serial ports you'd be using attySnto attach a modem or a serial console.
ttyUSB0is the device for the first USB serial convertor. If you have an USB serial cable you'd be using attyUSBnto connect to the serial port of a router.
ttyAMA0is the device for the first serial port on ARM architecture. If you have an ARM-based TV box with a serial console and running Android or OpenELEC, you'd be using attyAMAnto attach a console to it.
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
ttyS0is the device for the first UART serial port on x86 and x86_64 architectures. If you have a PC motherboard with serial ports you'd be using attySnto attach a modem or a serial console.
ttyUSB0is the device for the first USB serial convertor. If you have an USB serial cable you'd be using attyUSBnto connect to the serial port of a router.
ttyAMA0is the device for the first serial port on ARM architecture. If you have an ARM-based TV box with a serial console and running Android or OpenELEC, you'd be using attyAMAnto attach a console to it.
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
edited Sep 2 '16 at 10:19
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
answered Sep 2 '16 at 7:27
Satō Katsura
10.9k11534
10.9k11534
1
There's more at unix.stackexchange.com/a/127260/5132 .
– JdeBP
Sep 2 '16 at 17:37
add a comment |
1
There's more at unix.stackexchange.com/a/127260/5132 .
– JdeBP
Sep 2 '16 at 17:37
1
1
There's more at unix.stackexchange.com/a/127260/5132 .
– JdeBP
Sep 2 '16 at 17:37
There's more at unix.stackexchange.com/a/127260/5132 .
– JdeBP
Sep 2 '16 at 17:37
add a comment |
ttyS0
What you get on host when you connect to target with this:
Source
This port is not present on most laptops or small devboards, but is still present on desktops, and is very convenient for OS developers.
You also get it with qemu -device isa-serial.
ttyUSB0
What you get on host when using either of:
And this is how I connect the GPIOs of my Raspberry Pi to my laptop!
And another RPI connector type:
Source
A concrete RPI example at: https://stackoverflow.com/questions/22054578/how-to-run-a-program-without-an-operating-system/32483545#32483545
ttyAMA0
An ARM thing as mentioned by Sato.
Haven't run into that for real hardware, will post pics when I do. I think I would be able to connect my desktop with a serial port to my RPI with that interface: https://raspberrypi.stackexchange.com/questions/69697/what-is-dev-ttyama0
But I've used it with QEMU: https://github.com/buildroot/buildroot/tree/27d7ef126bc7f4eb1a757128466befa11245bbfd/board/qemu/arm-versatile
It seems that AMA is shortened form of AMBA? https://www.raspberrypi.org/forums/viewtopic.php?t=8075 But why would they shorten a 4 character acronym?!
The only interesting Linux kernel hits are under: https://github.com/torvalds/linux/blob/v4.16/drivers/tty/serial/amba-pl011.c#L2488 so it seems to be strictly linked to the PL011: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0183g/index.html which is a UART controller licensed by ARM, which I think is the dominating implementation.
ttySAC0
Kamil reported that his Samsung Artik 710, so another one for the collection.
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
What about ttySAC0? I have this on ARM64 architecture Samsung Artik 710 device.
– Kamil
Nov 6 at 0:36
@Kamil OK, a new one for me then :-) How do you connect to it from host to seettySAC0? Which cable? Send a photo if you can.
– Ciro Santilli 新疆改造中心 六四事件 法轮功
Nov 6 at 8:36
add a comment |
ttyS0
What you get on host when you connect to target with this:
Source
This port is not present on most laptops or small devboards, but is still present on desktops, and is very convenient for OS developers.
You also get it with qemu -device isa-serial.
ttyUSB0
What you get on host when using either of:
And this is how I connect the GPIOs of my Raspberry Pi to my laptop!
And another RPI connector type:
Source
A concrete RPI example at: https://stackoverflow.com/questions/22054578/how-to-run-a-program-without-an-operating-system/32483545#32483545
ttyAMA0
An ARM thing as mentioned by Sato.
Haven't run into that for real hardware, will post pics when I do. I think I would be able to connect my desktop with a serial port to my RPI with that interface: https://raspberrypi.stackexchange.com/questions/69697/what-is-dev-ttyama0
But I've used it with QEMU: https://github.com/buildroot/buildroot/tree/27d7ef126bc7f4eb1a757128466befa11245bbfd/board/qemu/arm-versatile
It seems that AMA is shortened form of AMBA? https://www.raspberrypi.org/forums/viewtopic.php?t=8075 But why would they shorten a 4 character acronym?!
The only interesting Linux kernel hits are under: https://github.com/torvalds/linux/blob/v4.16/drivers/tty/serial/amba-pl011.c#L2488 so it seems to be strictly linked to the PL011: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0183g/index.html which is a UART controller licensed by ARM, which I think is the dominating implementation.
ttySAC0
Kamil reported that his Samsung Artik 710, so another one for the collection.
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
What about ttySAC0? I have this on ARM64 architecture Samsung Artik 710 device.
– Kamil
Nov 6 at 0:36
@Kamil OK, a new one for me then :-) How do you connect to it from host to seettySAC0? Which cable? Send a photo if you can.
– Ciro Santilli 新疆改造中心 六四事件 法轮功
Nov 6 at 8:36
add a comment |
ttyS0
What you get on host when you connect to target with this:
Source
This port is not present on most laptops or small devboards, but is still present on desktops, and is very convenient for OS developers.
You also get it with qemu -device isa-serial.
ttyUSB0
What you get on host when using either of:
And this is how I connect the GPIOs of my Raspberry Pi to my laptop!
And another RPI connector type:
Source
A concrete RPI example at: https://stackoverflow.com/questions/22054578/how-to-run-a-program-without-an-operating-system/32483545#32483545
ttyAMA0
An ARM thing as mentioned by Sato.
Haven't run into that for real hardware, will post pics when I do. I think I would be able to connect my desktop with a serial port to my RPI with that interface: https://raspberrypi.stackexchange.com/questions/69697/what-is-dev-ttyama0
But I've used it with QEMU: https://github.com/buildroot/buildroot/tree/27d7ef126bc7f4eb1a757128466befa11245bbfd/board/qemu/arm-versatile
It seems that AMA is shortened form of AMBA? https://www.raspberrypi.org/forums/viewtopic.php?t=8075 But why would they shorten a 4 character acronym?!
The only interesting Linux kernel hits are under: https://github.com/torvalds/linux/blob/v4.16/drivers/tty/serial/amba-pl011.c#L2488 so it seems to be strictly linked to the PL011: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0183g/index.html which is a UART controller licensed by ARM, which I think is the dominating implementation.
ttySAC0
Kamil reported that his Samsung Artik 710, so another one for the collection.
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
ttyS0
What you get on host when you connect to target with this:
Source
This port is not present on most laptops or small devboards, but is still present on desktops, and is very convenient for OS developers.
You also get it with qemu -device isa-serial.
ttyUSB0
What you get on host when using either of:
And this is how I connect the GPIOs of my Raspberry Pi to my laptop!
And another RPI connector type:
Source
A concrete RPI example at: https://stackoverflow.com/questions/22054578/how-to-run-a-program-without-an-operating-system/32483545#32483545
ttyAMA0
An ARM thing as mentioned by Sato.
Haven't run into that for real hardware, will post pics when I do. I think I would be able to connect my desktop with a serial port to my RPI with that interface: https://raspberrypi.stackexchange.com/questions/69697/what-is-dev-ttyama0
But I've used it with QEMU: https://github.com/buildroot/buildroot/tree/27d7ef126bc7f4eb1a757128466befa11245bbfd/board/qemu/arm-versatile
It seems that AMA is shortened form of AMBA? https://www.raspberrypi.org/forums/viewtopic.php?t=8075 But why would they shorten a 4 character acronym?!
The only interesting Linux kernel hits are under: https://github.com/torvalds/linux/blob/v4.16/drivers/tty/serial/amba-pl011.c#L2488 so it seems to be strictly linked to the PL011: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0183g/index.html which is a UART controller licensed by ARM, which I think is the dominating implementation.
ttySAC0
Kamil reported that his Samsung Artik 710, so another one for the collection.
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
edited Dec 17 at 15:14
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
answered May 29 '17 at 10:39
Ciro Santilli 新疆改造中心 六四事件 法轮功
4,90124040
4,90124040
What about ttySAC0? I have this on ARM64 architecture Samsung Artik 710 device.
– Kamil
Nov 6 at 0:36
@Kamil OK, a new one for me then :-) How do you connect to it from host to seettySAC0? Which cable? Send a photo if you can.
– Ciro Santilli 新疆改造中心 六四事件 法轮功
Nov 6 at 8:36
add a comment |
What about ttySAC0? I have this on ARM64 architecture Samsung Artik 710 device.
– Kamil
Nov 6 at 0:36
@Kamil OK, a new one for me then :-) How do you connect to it from host to seettySAC0? Which cable? Send a photo if you can.
– Ciro Santilli 新疆改造中心 六四事件 法轮功
Nov 6 at 8:36
What about ttySAC0? I have this on ARM64 architecture Samsung Artik 710 device.
– Kamil
Nov 6 at 0:36
What about ttySAC0? I have this on ARM64 architecture Samsung Artik 710 device.
– Kamil
Nov 6 at 0:36
@Kamil OK, a new one for me then :-) How do you connect to it from host to see
ttySAC0? Which cable? Send a photo if you can.– Ciro Santilli 新疆改造中心 六四事件 法轮功
Nov 6 at 8:36
@Kamil OK, a new one for me then :-) How do you connect to it from host to see
ttySAC0? Which cable? Send a photo if you can.– Ciro Santilli 新疆改造中心 六四事件 法轮功
Nov 6 at 8:36
add a comment |
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1
You can look up many device types in the kernel docs: git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/…
– phg
Sep 2 '16 at 7:30