4 * Copyright 2000 Bernardo Innocenti <bernie@codewiz.org>
5 * Copyright 2003,2004 Develer S.r.l. (http://www.develer.com/)
9 * \brief High level serial I/O API
12 * \author Bernardo Innocenti <bernie@develer.com>
17 * Revision 1.1 2004/05/23 18:10:11 bernie
18 * Import drv/ modules.
20 * Revision 1.2 2004/04/21 17:38:24 rasky
23 * Revision 1.16 2004/04/03 18:30:49 aleph
24 * Move timeout defines in config, private define in .c
26 * Revision 1.15 2004/03/29 17:01:02 aleph
27 * Add function to set serial parity, fix it when ser_open is used
29 * Revision 1.14 2004/03/29 16:19:33 aleph
30 * Add ser_cleanup function; Various code improvements
32 * Revision 1.13 2004/03/24 15:22:27 aleph
33 * Removed subdirs -I, fix header inclusion, move config.h in board_kf, kctrl
35 * Revision 1.12 2004/03/17 17:30:30 bernie
36 * Add GCC format checks to printf()-like functions.
38 * Revision 1.11 2004/03/16 23:06:42 aleph
41 * Revision 1.10 2004/03/12 18:46:53 bernie
42 * ser_read(): New function.
44 * Revision 1.9 2004/03/11 18:11:51 bernie
51 #include <mware/fifobuf.h>
55 * \name Serial Error/status flags
57 * Some of these flags map directly to the flags
58 * in AVR UART Status Register(USR).
59 * \todo flags of DSP56k aren't mapped to these flags. Luckily
60 * these flags doesn't collide with the DSP56k ones,
61 * which are from 0x0100 to 0x8000
66 #define SERRF_RXFIFOOVERRUN BV(0) /*!< Rx FIFO buffer overrun */
67 #define SERRF_RXTIMEOUT BV(5) /*!< Receive timeout */
68 #define SERRF_TXTIMEOUT BV(6) /*!< Transmit timeout */
71 #define SERRF_RXSROVERRUN BV(3) /*!< Rx shift register overrun */
72 #define SERRF_FRAMEERROR BV(4) /*!< Stop bit missing */
73 #define SERRF_PARITYERROR BV(7) /*!< Parity error */
74 #elif defined(__m56800__)
76 #define SERRF_RXFIFOOVERRUN BV(0) /*!< Rx FIFO buffer overrun */
77 #define SERRF_RXTIMEOUT BV(1) /*!< Receive timeout */
78 #define SERRF_TXTIMEOUT BV(2) /*!< Transmit timeout */
81 #define SERRF_PARITYERROR BV(8) /*!< Parity error */
82 #define SERRF_FRAMEERROR BV(9) /*!< Stop bit missing */
83 #define SERRF_NOISEERROR BV(10) /*!< Noise error */
84 #define SERRF_RXSROVERRUN BV(11) /*!< Rx shift register overrun */
86 #error unknown architecture
90 /*! \name Parity settings for ser_setparity() */
92 #define SER_PARITY_NONE 0
93 #define SER_PARITY_EVEN 2
94 #define SER_PARITY_ODD 3
98 * \name Serial hw numbers
104 #if defined(__AVR_ATmega64__)
109 #elif defined(__AVR_ATmega103__)
113 #elif defined (__m56800__)
118 #error unknown architecture
121 SER_CNT /**< Number of serial ports */
126 struct SerialHardware;
128 /*! Human-readable serial error descriptions */
129 extern const char * const serial_errors[8];
131 /*! Serial handle structure */
134 /*! Physical port number */
140 * \name FIFO transmit and receive buffers.
142 * Declared volatile because handled asinchronously by interrupts.
146 volatile FIFOBuffer txfifo;
147 volatile FIFOBuffer rxfifo;
148 unsigned char txbuffer[CONFIG_SER_TXBUFSIZE];
149 unsigned char rxbuffer[CONFIG_SER_RXBUFSIZE];
152 #ifdef CONFIG_SER_RXTIMEOUT
155 #ifdef CONFIG_SER_TXTIMEOUT
159 /*! Holds the flags defined above. Will be 0 when no errors have occurred. */
160 REGISTER uint16_t status;
162 /*! Low-level interface to hardware. */
163 struct SerialHardware* hw;
168 /* Function prototypes */
169 extern int ser_putchar(int c, struct Serial *port);
170 extern int ser_getchar(struct Serial *port);
171 extern int ser_getchar_nowait(struct Serial *port);
172 extern int ser_write(struct Serial *port, const void *buf, size_t len);
173 extern int ser_read(struct Serial *port, char *buf, size_t size);
174 extern int ser_print(struct Serial *port, const char *s);
175 extern int ser_gets(struct Serial *port, char *buf, int size);
176 extern int ser_gets_echo(struct Serial *port, char *buf, int size, bool echo);
177 extern int ser_printf(struct Serial *port, const char *format, ...) FORMAT(__printf__, 2, 3);
178 extern void ser_setbaudrate(struct Serial *port, unsigned long rate);
179 extern void ser_setparity(struct Serial *port, int parity);
180 extern void ser_purge(struct Serial *port);
181 extern struct Serial *ser_open(unsigned int unit);
182 extern void ser_close(struct Serial *port);
183 #if defined(CONFIG_SER_RXTIMEOUT) || defined(CONFIG_SER_TXTIMEOUT)
184 extern void ser_settimeouts(struct Serial *port, time_t rxtimeout, time_t txtimeout);
188 * @name Additional functions implemented as macros
192 #define ser_getstatus(h) ((h)->status)
193 #define ser_setstatus(h, x) ((h)->status = (x))