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AVR32 USARTs

Explore AVR32 USART block diagram options, including baud rates, parity types, stop bits, and channel modes. Learn how to reset, initialize, write, read, and reset status using AVR32 USART driver functions.

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AVR32 USARTs

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  1. CS-423 Dick Steflik AVR32 USARTs

  2. Block Diagram

  3. Options struct usart_options_t { unsigned long baudrate; unsigned char charlength; unsigned char paritytype; unsigned short stopbits; unsigned char channelmode; }; where: parity stop bits channelmode 0 – even 0 – 1 bit 0 – normal 1 – odd 1 – 1.5 bits 1 – auto echo 2 – space 2 – 2 bits 2 – local loopback 3 – mark 3 – timeguard 3 – remote loopback 4 – none

  4. Driver Functions void usart_reset( volatile struct avr32_usart_t * usart); void usart_init_rs232( volatile struct avr32_usart_t * usart, struct usart_options_t * opt, long cpu_hz)‏ int usart_send_addr(volatile struct avr32_usart_t * usart, int addr); int usart_write_char(volatile struct avr32_usart_t * usart, int c); inline void usart_bw_write_char(volatile struct avr32_usart_t * usart, int c); int usart_putchar(volatile struct avr32_usart_t * usart, int c); int usart_read_char(volatile struct avr32_usart_t * usart, int * c); int usart_getchar(volatile struct avr32_usart_t * usart); void usart_reset_status(volatile struct avr32_usart_t * usart);

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