Apr 29, 2015 #1 A ark5230 Advanced Member level 3 Joined Jun 29, 2009 Messages 862 Helped 163 Reputation 324 Reaction score 140 Trophy points 1,323 Location India Activity points 6,187 Two simple queries Is there something like serial data buffer in AVR microcontrollers Atmega 16/32? If serial input is coming to MCU, the incoming data will not be accessible after the data stream is over?
Two simple queries Is there something like serial data buffer in AVR microcontrollers Atmega 16/32? If serial input is coming to MCU, the incoming data will not be accessible after the data stream is over?
Apr 29, 2015 #2 M milan.rajik Banned Joined Apr 1, 2013 Messages 2,524 Helped 540 Reputation 1,078 Reaction score 524 Trophy points 1,393 Activity points 0 UDR is the register which holds the serial byte. You have to use Serial receive interrupt to read the bytes. If the serial transmission is complete then UDR holds the last byte that was transmitted to AVR.
UDR is the register which holds the serial byte. You have to use Serial receive interrupt to read the bytes. If the serial transmission is complete then UDR holds the last byte that was transmitted to AVR.
May 1, 2015 #3 A ark5230 Advanced Member level 3 Joined Jun 29, 2009 Messages 862 Helped 163 Reputation 324 Reaction score 140 Trophy points 1,323 Location India Activity points 6,187 Thanks UDR holds the latest byte received.
May 1, 2015 #4 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,163 Helped 4,868 Reputation 9,757 Reaction score 5,539 Trophy points 1,393 Activity points 168,374 Hi, THE given answer is true. It , relates on UART communication. There are at least two other serial communication interfaces: SPI and TWI. In either case you need to read the receive register before a new byte tranfer is complete, else you will loose data. Klaus
Hi, THE given answer is true. It , relates on UART communication. There are at least two other serial communication interfaces: SPI and TWI. In either case you need to read the receive register before a new byte tranfer is complete, else you will loose data. Klaus