#include <stdint.h>

Macros
#define	UART_BUFFER_RX 32

Functions
static void	uart_init (uint32_t baud)
	Initializes uart module. More...

void	uart_send_byte (uint8_t c)
	Sends single byte over UART. More...

uint8_t	uart_byte_available (void)
	Returns non-zero code if there are bytes in RX buffer. More...

uint8_t	uart_read_byte (void)
	Reads byte from UART RX buffer. More...

Detailed Description

Uart implementation for SSD1306 library

Define UART_INTERRUPT_ENABLE before including this header, if you want interrupt-based UART support. Define CONFIG_AVR_UART_AVAILABLE and CONFIG_AVR_UART_ENABLE before including this header, if you want to use uart module outside ssd1306 library.

Definition in file ssd1306_uart.h.

Macro Definition Documentation

◆ UART_BUFFER_RX

#define UART_BUFFER_RX 32

Rx buffer size, used by AVR USART implementation

Definition at line 49 of file ssd1306_uart.h.

Function Documentation

◆ uart_byte_available()

uint8_t uart_byte_available ( void )

Returns non-zero code if there are bytes in RX buffer.

Returns non-zero code if there are bytes in RX buffer

Definition at line 128 of file ssd1306_uart.c.

◆ uart_init()

static void uart_init ( uint32_t baud )

inlinestatic

Initializes uart module.

Initializes uart module. Depending on UART_INTERRUPT_ENABLE define, module will be initialized in interrupt mode or synchronouse mode.

Parameters

baud	baud rate for the uart module

Note: only 115200, 57600, 38400 and 19200 are supported.

Definition at line 68 of file ssd1306_uart.h.

◆ uart_read_byte()

uint8_t uart_read_byte ( void )

Reads byte from UART RX buffer.

Reads byte from UART RX buffer. Please, check bytes availability via uart_byte_available() before calling this function.

Definition at line 137 of file ssd1306_uart.c.

◆ uart_send_byte()

void uart_send_byte ( uint8_t c )

Sends single byte over UART.

Sends single byte over UART. The function doesn't use any internal buffers, so it returns control once byte is sent.