In Proteus simulation, the duplicate part reference error is found after running the code.
This is due to an error in part naming:
Double click the error location to quickly locate the faulty component:
Double click the faulty component to modify the component name:
After renaming all electronic components with duplicate names, they can operate normally.
During the development of Nordic 52810, after the softdevice is re written, when nrfconnect for Mobile Connect is used, the connection fails, and the mobile phone displays peer removed pairing information. Device side log information:
< info> peer_ manager_ handler: Connection security failed: role: Peripheral, conn_ handle: 0x0, procedure: Encryption, error: 4102
Solution: in the Bluetooth settings of the mobile phone, find the device to be connected, select “ignore this device”, and re connect with nrfconnect. Success!
Debugging error in ec20cehg Linux
Run quectel CM & amp
requestRegistrationState2 MCC: 460, MNC: 0, PS: Attached, DataCap: EDGE
requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe`
Solution
1: When the Internet of things is locked, it needs to be unblocked
2: does the receiving and transmitting frequency bands of the antenna match
I encountered the first situation, replace the IoT card to solve, try the following with their own cell phone card, get the IP address to connect to the Internet can communicate.
ESP8266 firmware continues to fail and displays chip Sync Error
View pin definition
|Function| URXD>0 UART_RXD, receive
>1 UTXD b>2 UART_TXD, send
>3 RST>4 external Reset signal, low level Reset, high level work (default high)
>5 GND>6 GND
>7 VCC>8 3.3v, module power supply
>9 GPIO 0>0 working mode Drop down: UARTDownload, download mode
|CH_PD | high level operation;
|GPIO 2 | (1) power on must be high level, do not pull down the hardware; (2) Internal default has been elevated
Solution
RST pin ground reset after re-burning, successful
Timed out waiting for Packet Header
Solution: RST pin needs to be connected until it turns up a connecting connecting wire, unplug RST ground wire and upload successfully