hello,
I want to send AT command from colibri imx6dl to gprs modem. my carrier board is iris V1.1A
I use UART-A RS-232 header (X13) and attach my device in here.
information about UART-A RS-232 in here;
UART-A RS-232 header (X13)
The Full Function (FF) UART-A RS-232 connector is a 10 way (2 rows x 5 way) 2.54mm pitch header
capable of being connected to an industry standard DTK/INTEL 10 way IDC to 9 way D-type male
connector.
Connector type: 2x5 Pin Header Male, 2.54mm
Pin Signal Name
1 RS232_A_ DCD I
2 RS232_A_ DSR I
3 RS232_A_ RXD I
4 RS232_A_ RTS O
5 RS232_A_ TXD O
6 RS232_A_ CTS I
7 RS232_A_ DTR O
8 RS232_A_ RI I
9 GND 10 NC
so ı attached my gprs module on my board with rx tx and gnd.
than run this command;
root@colibri-imx6:~# dmesg | grep tty
[ 0.000000] Kernel command line: enable_wait_mode=off galcore.contiguousSize=50331648 ip=off
root=/dev/mmcblk0p2 rw,noatime rootfstype=ext3 rootwait fec_mac=00:14:2d:4a:4b:48 consoleblank=0
no_console_suspend=1 console=tty1 console=ttymxc0,115200n8
video=mxcfb0:dev=lcd,640x480M@60,if=RGB666 video=mxcfb1:off fbmem=8M
[ 0.000000] console [tty1] enabled
[ 0.426579] 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 58) is a IMX
[ 1.150351] console [ttymxc0] enabled
[ 1.151105] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 59) is a IMX
[ 1.151558] 21ec000.serial: ttymxc2 at MMIO 0x21ec000 (irq = 60) is a IMX
[ 3.307480] systemd[1]: Expecting device dev-ttymxc0.device…
[ 3.579594] systemd[1]: Starting system-serial\x2dgetty.slice.
[ 3.611031] systemd[1]: Created slice system-serial\x2dgetty.slice.
[ 3.648763] systemd[1]: Starting system-getty.slice.
[ 3.681008] systemd[1]: Created slice system-getty.slice.
Created slice system-getty.slice.
but ı can not found my device .
how can ı find it ?
please help me about this problem. thank you so much .