17 USART Registers the operation and programming of the data, control/status and baud registers скачать в хорошем качестве

17 USART Registers the operation and programming of the data, control/status and baud registers

Microcontroller register level programming for the ATmega2560 This nutshell explains the ATmega2560 USART registers. The internal structure of the USART system is shown. The use of the UDRn data register is explained, and how the register is used for both the transmit and receive buffer. The UCSRnA control and status register is described, showing the receive complete, transmit complete, and data register empty flags, as well as framing error, data over run and parity error flags are described. The UCSRnB control and status register is described showing the receiver and transmitter power enable bits. The UCSRnC control and status register is shown, detailing how the USART can be configured for either synchronous or asynchronous mode, parity, number of stop bits, and number of bits in the data packet. Finally, baud rate settings are shown using the UBBRnH/nL baud rate registers Keywords AVR, ATmega, ATmega2560, Atmel, Microchip, microcontroller programming, microcontroller register level programming. universal synchronous, asynchronous receiver transmitter, USART, data register UDRn, control and status registers UCSRnA/B/C, baud rate registers UBBRnH/nL Chapters 00:00 Atmega256- USART features 01:22 internal register structure 03:40 UDRn data register 05:43 UCSRnA control and status register A 08:11 UCSRnB control and status register B 10:00 UCSRnC control and status register C 11:22 UBRRnH/nL baud rate register