The most important Register used in UART configuration is UART Control Register 1 (CR1). Most of the Configuration is done here.
serial
Managing Multiple UARTs in STM32
the controller receives the data from device, it will send it to the PC. And if it receives the data from the PC, it will send it to the device.
GLCD 128×64 ST7920 interfacing with STM32
According to the datasheet of ST7920, In order to send a command to the display, We need to perform the following operations:-
1. Pull the CS Pin HIGH
Ring buffer using head and tail in STM32
Whenever UART receives data in the ring buffer, the head gets incremented by 1. And when we read that data, tale gets incremented by 1.