This is the A9G GSM/GPRS+GPS/BDS Development Board. A9G development board has basic telephone/sms, GPRS network communication, GPS/BDS dual-mode positioning function. A9G development board contains lithium battery charge management, microphone, speaker interface, USB communication interface, multiple user buttons / led, TF card slot, SPI interface, I2C2 interface, ADC interface. A9G development board...
This is the A9G GSM/GPRS+GPS/BDS Development Board.
A9G development board has basic telephone/sms, GPRS network communication, GPS/BDS dual-mode positioning function.
A9G development board contains lithium battery charge management, microphone, speaker interface, USB communication interface, multiple user buttons / led, TF card slot, SPI interface, I2C2 interface, ADC interface.
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Development board useATFirmware, used during debugging4Root line connectionUsb-ttl, received debugging on the computer:VUSB→5V;GND→GND;AT_TX→RX;AT_RX→TX;
Or useUSBPower supply, and then connect three more linesGND→GND;AT_TX→RX;AT_RX→TX;
Or powered by a lithium batteryVBAT→(3.3v-4.2)V; GND→GND;AT_TX→RX;AT_RX→TX;(useVBATPower supply, long pressPower_keybutton2sabout)
A9GThe development board can use a lithium battery orUSBpowered by.
Power-on1~2SThe rear module runs automatically, and the serial port will automatically output information at this time. The entire process of powering up to the development board does not require any operation.
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