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uart.h
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uart.h
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/*
Project: 1Sheeld Firmware
File: uart.h
Compiler: avr-gcc 3.4.2
Author: Integreight
Date: 2014.5
*/
/**
* @file Uart.h
* @brief UART driver for handling the serial data on ATmega162 uart modules
* @author Integreight
* @version 1.1
*/
#ifndef UART_H_
#define UART_H_
#include "stdint.h"
#include <avr/io.h>
#include <avr/interrupt.h>
#include "timers.h"
#define BAUD_9600 0x01
#define BAUD_14400 0x02
#define BAUD_19200 0x03
#define BAUD_28800 0x04
#define BAUD_38400 0x05
#define BAUD_57600 0x06
#define BAUD_115200 0x07
#define UART_RX0_INTERRUPT ENABLED
#define UART_RX1_INTERRUPT ENABLED
#define UART_RX1_BUFFER_SIZE 256
#define UART_RX1_BUFFER_MASK ( UART_RX1_BUFFER_SIZE - 1)
#define UART1_STATUS UCSR1A
#define UART1_DATA UDR1
#define UART0_RX0_BUFFER_SIZE 256
#define UART0_RX0_BUFFER_MASK ( UART0_RX0_BUFFER_SIZE - 1)
#define UART0_STATUS UCSR0A
#define UART0_DATA UDR0
//Error codes
#define UART_NO_DATA -1 /**< no receive data available */
#define UART_BUFFER_OVERFLOW -2 /**< receive ringbuffer overflow */
#ifdef PLUS_BOARD
volatile uint8_t isArduinoRx0BufferEmpty;
volatile uint8_t isArduinoRx0BufferOverFlowed;
#endif
/**
* @brief Initialize the serial port, it's status registers and buffers.
* @param serialPort specify which serial port to initialize 0 or 1
* @return None
*/
void initUart(uint8_t serialPort,uint8_t baudrate);
/**
* @brief Disables the serial port, it's status registers and buffers. and returns rx and tx pins to their defaults.
* @param serialPort specify which serial port to disable 0 or 1
* @return None
*/
void terminateUart(uint8_t serialPort);
/**
* @brief Transmits a byte to serial port 0.
* @param data the byte to be sent
* @return None
*/
void writeOnUart0(uint8_t data);
/**
* @brief Transmits a byte to serial port 1.
* @param data the byte to be sent
* @return None
*/
void writeOnUart1(uint8_t data);
/**
* @brief Receives a byte from serial port 0.
* @param None.
* @return the received byte.
*/
int16_t readFromUart0();
/**
* @brief Receives a byte from serial port 1.
* @param None.
* @return the received byte.
*/
int16_t readFromUart1();
/**
* @brief Setup the LEDs as UART communication indicator
* @param None
* @return None
*/
void setupUartLeds();
/**
* @brief Returns true if Arduino buffer is Empty.
* @param None.
* @return True or False.
*/
uint8_t getIsArduinoRx0BufferEmptyFlag();
/**
* @brief Sets the boolean.
* @param True or False.
* @return None.
*/
void setIsArduinoRx0BufferEmptyFlag(uint8_t);
/**
* @brief Returns true if Arduino buffer is Empty.
* @param None.
* @return True or False.
*/
uint8_t getIsArduinoRx0BufferOverFlowedFlag();
/**
* @brief Sets the boolean.
* @param True or False.
* @return None.
*/
void setIsArduinoRx0BufferOverFlowedFlag(uint8_t);
/**
* @brief Gets the count of the available data in the buffer of serial 1.
* @param None.
* @return the data count.
*/
int16_t getAvailableDataCountOnUart1();
/**
* @brief Gets the count of the available data in the buffer of serial 0.
* @param None.
* @return the data count.
*/
int16_t getAvailableDataCountOnUart0();
#endif /* UART_H_ */