Norco EMB-7541 User Manual

Contents

Norco EMB-7541 User Manual Manual pdf 31 page image

23EMB-7541 V1.0After startup, mount by command: ： mount -t vfat /dev/mmcblk1p1 /tmp/ ， below the / tmpdirectory is the contents of the TF card.3.1.7 RelaySupport relay control.The normal opening and closing of the relay can be controlled by operating GPIO114.echo 114 > /sys/class/gpio/export //export GPIO114echo out > /sys/class/gpio/gpio114/direction //set GPIO direction to outputecho 1 > /sys/class/gpio/gpio114/value //control relay normally openecho 0 > /sys/class/gpio/gpio114/value //control relay normally closeecho 114 > /sys/class/gpio/unexport //cancel GPIO102 export3.2.8 EthernetSupport，instructions:Link device network card to LAN，configure default IP with ifconfig at theterminal. You can ping other computers in the ping LAN.3.2.9 Sound Card and MicrophoneSupport ， input a headset with a microphone. support microphone input ， local sound cardoutput、HDMI sound outputInstructions:Running ./sample_audio：./sample_audio 1 voice recording，at this point, the speech will generate audio_chn0.aac file inthe current directory and save，Run./sample_audio 2 for sound playback，play the stored audiofile.3.2.10 CameraCurrently supports four Sony IMX series sensors：IMX290、IMX334.Other sensors with the same interface definition can be customized according to the actual useof customers.