I used STM32CubeMX to generate the serial port 1 interrupt initialization code for STM32L151C8T6.
An exclamation mark appears on serial port 1
Could you please tell me where the problem is and how to
Set the ADAPT bit in the SCIGCR1 register to 1 to enable the baud rate adaptation function. During the frame header reception, the slave node can measure the baud rate using the synchronization field.
USB 4G module testThe USB 4G module used in this case is ZTE's ME3630, which is equipped with a 4G antenna and a GPS antenna.
The kernel has built-in ME3630 driver, no manual installation is required.