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BlackMark 2019-07-30 20:29:15 +02:00
parent 470eb06345
commit c03196493a
2 changed files with 538 additions and 577 deletions
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uart.cpp
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uart.h
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@ -46,33 +46,30 @@ LICENSE:
* @copyright (C) 2015 Peter Fleury, GNU General Public License Version 3 * @copyright (C) 2015 Peter Fleury, GNU General Public License Version 3
*/ */
#include <avr/pgmspace.h> #include <avr/pgmspace.h>
#if (__GNUC__ * 100 + __GNUC_MINOR__) < 405 #if (__GNUC__ * 100 + __GNUC_MINOR__) < 405
#error "This library requires AVR-GCC 4.5 or later, update to newer AVR-GCC compiler !" #error "This library requires AVR-GCC 4.5 or later, update to newer AVR-GCC compiler !"
#endif #endif
/**@{*/ /**@{*/
/* /*
** constants and macros ** constants and macros
*/ */
/** @brief UART Baudrate Expression /** @brief UART Baudrate Expression
* @param xtalCpu system clock in Mhz, e.g. 4000000UL for 4Mhz * @param xtalCpu system clock in Mhz, e.g. 4000000UL for 4Mhz
* @param baudRate baudrate in bps, e.g. 1200, 2400, 9600 * @param baudRate baudrate in bps, e.g. 1200, 2400, 9600
*/ */
#define UART_BAUD_SELECT(baudRate,xtalCpu) (((xtalCpu) + 8UL * (baudRate)) / (16UL * (baudRate)) -1UL) #define UART_BAUD_SELECT(baudRate, xtalCpu) (((xtalCpu) + 8UL * (baudRate)) / (16UL * (baudRate)) - 1UL)
/** @brief UART Baudrate Expression for ATmega double speed mode /** @brief UART Baudrate Expression for ATmega double speed mode
* @param xtalCpu system clock in Mhz, e.g. 4000000UL for 4Mhz * @param xtalCpu system clock in Mhz, e.g. 4000000UL for 4Mhz
* @param baudRate baudrate in bps, e.g. 1200, 2400, 9600 * @param baudRate baudrate in bps, e.g. 1200, 2400, 9600
*/ */
#define UART_BAUD_SELECT_DOUBLE_SPEED(baudRate,xtalCpu) ( ((((xtalCpu) + 4UL * (baudRate)) / (8UL * (baudRate)) -1UL)) | 0x8000) #define UART_BAUD_SELECT_DOUBLE_SPEED(baudRate, xtalCpu) \
(((((xtalCpu) + 4UL * (baudRate)) / (8UL * (baudRate)) - 1UL)) | 0x8000)
/** @brief Size of the circular receive buffer, must be power of 2 /** @brief Size of the circular receive buffer, must be power of 2
* *
@ -93,19 +90,18 @@ LICENSE:
#endif #endif
/* test if the size of the circular buffers fits into SRAM */ /* test if the size of the circular buffers fits into SRAM */
#if ( (UART_RX_BUFFER_SIZE+UART_TX_BUFFER_SIZE) >= (RAMEND-0x60 ) ) #if ((UART_RX_BUFFER_SIZE + UART_TX_BUFFER_SIZE) >= (RAMEND - 0x60))
#error "size of UART_RX_BUFFER_SIZE + UART_TX_BUFFER_SIZE larger than size of SRAM" #error "size of UART_RX_BUFFER_SIZE + UART_TX_BUFFER_SIZE larger than size of SRAM"
#endif #endif
/* /*
** high byte error return code of uart_getc() ** high byte error return code of uart_getc()
*/ */
#define UART_FRAME_ERROR 0x1000 /**< @brief Framing Error by UART */ #define UART_FRAME_ERROR 0x1000 /**< @brief Framing Error by UART */
#define UART_OVERRUN_ERROR 0x0800 /**< @brief Overrun condition by UART */ #define UART_OVERRUN_ERROR 0x0800 /**< @brief Overrun condition by UART */
#define UART_PARITY_ERROR 0x0400 /**< @brief Parity Error by UART */ #define UART_PARITY_ERROR 0x0400 /**< @brief Parity Error by UART */
#define UART_BUFFER_OVERFLOW 0x0200 /**< @brief receive ringbuffer overflow */ #define UART_BUFFER_OVERFLOW 0x0200 /**< @brief receive ringbuffer overflow */
#define UART_NO_DATA 0x0100 /**< @brief no receive data available */ #define UART_NO_DATA 0x0100 /**< @brief no receive data available */
/* /*
** function prototypes ** function prototypes
@ -118,7 +114,6 @@ LICENSE:
*/ */
extern void uart_init(unsigned int baudrate); extern void uart_init(unsigned int baudrate);
/** /**
* @brief Get received byte from ringbuffer * @brief Get received byte from ringbuffer
* *
@ -145,7 +140,6 @@ extern void uart_init(unsigned int baudrate);
*/ */
extern unsigned int uart_getc(void); extern unsigned int uart_getc(void);
/** /**
* @brief Put byte to ringbuffer for transmitting via UART * @brief Put byte to ringbuffer for transmitting via UART
* @param data byte to be transmitted * @param data byte to be transmitted
@ -153,7 +147,6 @@ extern unsigned int uart_getc(void);
*/ */
extern void uart_putc(unsigned char data); extern void uart_putc(unsigned char data);
/** /**
* @brief Put string to ringbuffer for transmitting via UART * @brief Put string to ringbuffer for transmitting via UART
* *
@ -164,8 +157,7 @@ extern void uart_putc(unsigned char data);
* @param s string to be transmitted * @param s string to be transmitted
* @return none * @return none
*/ */
extern void uart_puts(const char *s ); extern void uart_puts(const char *s);
/** /**
* @brief Put string from program memory to ringbuffer for transmitting via UART. * @brief Put string from program memory to ringbuffer for transmitting via UART.
@ -178,14 +170,12 @@ extern void uart_puts(const char *s );
* @return none * @return none
* @see uart_puts_P * @see uart_puts_P
*/ */
extern void uart_puts_p(const char *s ); extern void uart_puts_p(const char *s);
/** /**
* @brief Macro to automatically put a string constant into program memory * @brief Macro to automatically put a string constant into program memory
*/ */
#define uart_puts_P(__s) uart_puts_p(PSTR(__s)) #define uart_puts_P(__s) uart_puts_p(PSTR(__s))
/** @brief Initialize USART1 (only available on selected ATmegas) @see uart_init */ /** @brief Initialize USART1 (only available on selected ATmegas) @see uart_init */
extern void uart1_init(unsigned int baudrate); extern void uart1_init(unsigned int baudrate);
@ -194,14 +184,13 @@ extern unsigned int uart1_getc(void);
/** @brief Put byte to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_putc */ /** @brief Put byte to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_putc */
extern void uart1_putc(unsigned char data); extern void uart1_putc(unsigned char data);
/** @brief Put string to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts */ /** @brief Put string to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts */
extern void uart1_puts(const char *s ); extern void uart1_puts(const char *s);
/** @brief Put string from program memory to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts_p */ /** @brief Put string from program memory to ringbuffer for transmitting via USART1 (only available on selected ATmega)
extern void uart1_puts_p(const char *s ); * @see uart_puts_p */
extern void uart1_puts_p(const char *s);
/** @brief Macro to automatically put a string constant into program memory */ /** @brief Macro to automatically put a string constant into program memory */
#define uart1_puts_P(__s) uart1_puts_p(PSTR(__s)) #define uart1_puts_P(__s) uart1_puts_p(PSTR(__s))
/**@}*/ /**@}*/
#endif // UART_H #endif // UART_H