Ubuntu-Jetson TX1串口使用教程

查看串口

1）ls -l /dev/ttyS*
2）Jetson TX1 下串口查看：ls -l /dev/ttyTHS*

root@tegra-ubuntu:/ssdb/caffe# ls -l /dev/ttyTHS*
crw-rw---- 1 root dialout 240, 1 Jul 10 02:56 /dev/ttyTHS1
crw-rw---- 1 root dialout 240, 2 Jul 10 02:56 /dev/ttyTHS2
crw-rw---- 1 root dialout 240, 3 Jul 10 02:56 /dev/ttyTHS3

查看串口驱动

root@tegra-ubuntu:/ssdb/caffe# cat  /proc/tty/driver/serial
serinfo:1.0 driver revision:
0: uart:Tegra mmio:0x70006000 irq:68 tx:214023 rx:0 RTS|CTS|DTR|RI
1: uart:unknown port:00000000 irq:0
2: uart:unknown port:00000000 irq:0
3: uart:unknown port:00000000 irq:0

3)查看串口设备：
dmesg | grep ttyS*
Jetson TX1下：dmesg | grep ttyTHS*

root@tegra-ubuntu:/ssdb/caffe# dmesg | grep ttyTHS*
[    2.287956] 70006040.serial: ttyTHS1 at MMIO 0x70006040 (irq = 69) is a SERIAL_TEGRA
[    2.299250] 70006200.serial: ttyTHS2 at MMIO 0x70006200 (irq = 78) is a SERIAL_TEGRA
[    2.317234] 70006300.serial: ttyTHS3 at MMIO 0x70006300 (irq = 122) is a SERIAL_TEGRA

使用串口

查看串口是否可用，可以对串口发送数据比如对com1口，

echo hello > /dev/ttyTHS1

设置波特率(临时)：

stty -F /dev/ttyTHS2 115200
stty -F /dev/ttyUSB0 115200
gtkterm -p /dev/ttyTHS2 -s 115200 &
gtkterm -p /dev/ttyUSB0 -s 115200 &

查看

stty -a -F /dev/ttyTHS2
   speed 115200 baud; rows 0; columns 0; line = 0;
   intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W;
   lnext = ^V; discard = ^O; min = 1; time = 0;
   -parenb -parodd -cmspar cs8 hupcl -cstopb cread clocal -crtscts
   -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel -iutf8
   opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
   isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke -flusho -extproc

详细串口编程见：
Linux下的串口编程(二）
6.7.2 设置串口通信参数
is J17 /dev/ttyTHS1 or /dev/ttyTHS2?