Difference between revisions of "Serial port"
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[[Serial port/zh|查看中文]] | [[Serial port/zh|查看中文]] | ||
| − | ====Serial Device Names under Multiple Platforms | + | ===Serial port communication in C=== |
| − | + | Please refre：[https://github.com/friendlyarm/comtest] | |
| + | |||
| + | ===Serial Device Names under Multiple Platforms=== | ||
| + | ====Allwinner H3/H5 Based Boards (NanoPi M1/NanoPi M1 Plus etc)==== | ||
UART1-> /dev/ttyS1<br /> | UART1-> /dev/ttyS1<br /> | ||
UART2 -> /dev/ttyS2<br /> | UART2 -> /dev/ttyS2<br /> | ||
UART3 -> /dev/ttyS3 (Only applies to NanoPi M1, NanoPi K1 and NanoPi K1 Plus)<br /> | UART3 -> /dev/ttyS3 (Only applies to NanoPi M1, NanoPi K1 and NanoPi K1 Plus)<br /> | ||
| − | + | ====S5P4418 Based Boards (NanoPi Fire2A/NanoPi M2A/NanoPi S2/NanoPC-T2 etc)==== | |
UART1 -> /dev/ttyAMA1 [Note 1]<br /> | UART1 -> /dev/ttyAMA1 [Note 1]<br /> | ||
UART2 -> /dev/ttyAMA2 [Note 1]<br /> | UART2 -> /dev/ttyAMA2 [Note 1]<br /> | ||
| Line 13: | Line 16: | ||
UART4 -> /dev/ttyAMA4<br /> | UART4 -> /dev/ttyAMA4<br /> | ||
| − | + | ====S5P6818 Based Boards (NanoPi M3/NanoPC-T3 etc)==== | |
UART1 -> /dev/ttySAC1 [Note 1]<br /> | UART1 -> /dev/ttySAC1 [Note 1]<br /> | ||
UART2 -> /dev/ttySAC2 [Note 1]<br /> | UART2 -> /dev/ttySAC2 [Note 1]<br /> | ||
| Line 20: | Line 23: | ||
<br /> | <br /> | ||
Note 1: only applies to specific boards, you need to check if a board has that serial device populated. | Note 1: only applies to specific boards, you need to check if a board has that serial device populated. | ||
| − | + | ====NanoPC T4==== | |
UART4 Only | UART4 Only | ||
::{| class="wikitable" | ::{| class="wikitable" | ||
| Line 36: | Line 39: | ||
|UART4 || Available, /dev/ttyS4 | |UART4 || Available, /dev/ttyS4 | ||
|} | |} | ||
| + | |||
| + | ===Uart Test Demo === | ||
| + | * General test method | ||
| + | The serial device test method described below is a general test method, which is applicable to the Allwinner H3/H5 platform development board, the S5P4418 platform development board, and the S5P6818 platform development board. | ||
| + | |||
| + | step1）Get test demo：<br> | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | $ git clone https://github.com/friendlyarm/comtest.git | ||
| + | $ cd comtest | ||
| + | $ gcc -o comtest comtest.c | ||
| + | </syntaxhighlight> | ||
| + | step2）Usage.<br> | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | $ ./comtest -d /dev/ttyS2 -s 115200 | ||
| + | </syntaxhighlight> | ||
| + | After that, the data can be received through the ttyS2. <br> | ||
| + | Press the Esc key 3 times to exit the program. <br> | ||
Latest revision as of 06:02, 14 February 2019
Contents
1 Serial port communication in C
Please refre：[1]
2 Serial Device Names under Multiple Platforms
2.1 Allwinner H3/H5 Based Boards (NanoPi M1/NanoPi M1 Plus etc)
UART1-> /dev/ttyS1
UART2 -> /dev/ttyS2
UART3 -> /dev/ttyS3 (Only applies to NanoPi M1, NanoPi K1 and NanoPi K1 Plus)
2.2 S5P4418 Based Boards (NanoPi Fire2A/NanoPi M2A/NanoPi S2/NanoPC-T2 etc)
UART1 -> /dev/ttyAMA1 [Note 1]
UART2 -> /dev/ttyAMA2 [Note 1]
UART3 -> /dev/ttyAMA3
UART4 -> /dev/ttyAMA4
2.3 S5P6818 Based Boards (NanoPi M3/NanoPC-T3 etc)
UART1 -> /dev/ttySAC1 [Note 1]
UART2 -> /dev/ttySAC2 [Note 1]
UART3 -> /dev/ttySAC3
UART4 -> /dev/ttySAC4
Note 1: only applies to specific boards, you need to check if a board has that serial device populated.
2.4 NanoPC T4
UART4 Only
Serial Port Funcation UART0 Bluetooth UART1 Ehternet UART2 Debug UART UART3 Ehternet UART4 Available, /dev/ttyS4
3 Uart Test Demo
- General test method
The serial device test method described below is a general test method, which is applicable to the Allwinner H3/H5 platform development board, the S5P4418 platform development board, and the S5P6818 platform development board.
step1）Get test demo：
$ git clone https://github.com/friendlyarm/comtest.git $ cd comtest $ gcc -o comtest comtest.c
step2）Usage.
$ ./comtest -d /dev/ttyS2 -s 115200
After that, the data can be received through the ttyS2.
Press the Esc key 3 times to exit the program.
