Two motherboards power up, wait a few moments later, then we can see the two motherboard Link lights on, Bluetooth connection is successful.ģ. Burn program and AT command configuration.ĪT+SETTING=DEFAULT Restoring the default settingsĪT+ROLE=ROLE_CENTRAL Set bluno nano as the hostĪT+ROLE=ROLE_PERIPHERAL Set bluno MEGA as the serverĪT+CMODE=UNIQUE Set bluno nano bluetooth connection addressĪT+BIND=。。。 bluno nano BLE chip MAC bounding address, the Bluetooth connection will connect this address.ĪT+BLUNODEBUG=ON print BLE chip serial port received data via USB serial portĢ. Serial happens to be the channel of the upper computer to the motherboard uploader, so when using Bluetooth uploader, there will be an error.ġ.
While MEGA has 4 pairs of serial ports, the default is also the use of Serial Bluetooth transmission. When Bluno series uses Bluetooth transmission, it needs to occupy one pair of the serial port of the motherboard, 1 pair serial only nano occupies Serial. The high probability of not being able to upload the program is due to the serial port being occupied by Bluetooth. Maximum is 253952 bytes.Īvrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified.Īvrdude: ser_drain(): read error: The handle is invalid.Īvrdude: ser_send(): write error: sorry no info availĪvrdude: stk500_send(): failed to send command to serial portĪvrdude: ser_recv(): read error: The handle is invalid.ĭoes not exist or your board is not connectedĪvrdude: stk500v2_getsync(): timeout communicating with programmer Sketch uses 656 bytes (0%) of program storage space. This report would have more information with
Maximum is 8192 bytes.Īvrdude: stk500v2_ReceiveMessage(): timeoutĪn error occurred while uploading the sketchĪvrdude: verification error, first mismatch at byte 0x0400Īvrdude: verification error content mismatch Global variables use 9 bytes (0%) of dynamic memory, leaving 8183 bytes for local variables. Sketch uses 1448 bytes (0%) of program storage space. SHT30 is a high-precision and low-power digital temperature and humidity sensor, and supports I2C interface (SHT30:0x44, QMP6988:0x70).QMP6988 is an absolute air pressure sensor specially designed for mobile applications, with high accuracy and stability, suitable for environmental data collection and detection types of projects.If I upload the blink example (if you mean that), I getĪrduino: 1.8.12 (Windows 10), Board: "Arduino Mega or Mega 2560, ATmega2560 (Mega 2560)" ENV III is an environmental sensor that integrates SHT30 and QMP6988 internally to detect temperature, humidity, and atmospheric pressure data.
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