UART¶

UART short characteristics:

• full-duplex mode
• separate FIFO buffers, width 32 bytes for receive and transmit
• word is 8 bit (fixed)
• 1 stop bit
• dataflow control (CTS/RTS)

UART in examples on C and Assembler:¶

1) Work with UART (ASM)

2) Work with UART (C)

The sequence of operations for transmit:¶

1)Allow alternative functions GPIO
2)Initialize UART
3)Transmit
4)Check status register

The sequence of operations for receive:¶

1)Allow alternative functions GPIO
2)Initialize UART
3)Check status register
4)Receive