Import into DevLib.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@408 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/drv/ser_simple.c b/drv/ser_simple.c
new file mode 100755 (executable)
index 0000000..4a57e71
--- /dev/null
+++ b/drv/ser_simple.c
@@ -0,0 +1,166 @@
+/*!
+ * \file
+ * <!--
+ * Copyright 2004, 2005 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Simple serial I/O driver
+ *
+ * \version $Id$
+ * \author Francesco Sacchi <batt@develer.com>
+ */
+
+/*#*
+ *#* $Log$
+ *#* Revision 1.1  2005/04/12 01:37:50  bernie
+ *#* Import into DevLib.
+ *#*
+ *#* Revision 1.7  2005/01/23 12:24:27  bernie
+ *#* Include macros.h for BV().
+ *#*
+ *#* Revision 1.6  2004/10/20 13:40:54  batt
+ *#* Put {} instead of ; after while loop.
+ *#*
+ *#* Revision 1.5  2004/10/20 13:39:40  batt
+ *#* Reformat.
+ *#*
+ *#* Revision 1.4  2004/10/20 13:30:02  batt
+ *#* Optimization of UCSR0C writing
+ *#*
+ *#* Revision 1.3  2004/10/14 15:55:32  batt
+ *#* Add ser_purge.
+ *#*
+ *#* Revision 1.2  2004/10/14 14:46:59  batt
+ *#* Change baudrate calculation.
+ *#*
+ *#* Revision 1.1  2004/10/13 16:35:36  batt
+ *#* New (simple) serial driver.
+ *#*/
+#include "ser_simple.h"
+
+#include <compiler.h>
+#include <config.h>
+#include <macros.h> /* BV() */
+#include <hw.h>
+
+#include <avr/io.h>
+
+/*!
+ * Send a character over the serial line.
+ *
+ * \return the character sent.
+ */
+int _ser_putchar(int c)
+{
+       /* Disable Rx to avoid echo*/
+       UCSR0B &= ~BV(RXEN);
+       /* Enable tx*/
+       UCSR0B |= BV(TXEN);
+       /* Prepare transmission */
+       UDR0 = c;
+       /* Wait until byte sent */
+       while (!(UCSR0A & BV(TXC))) {}
+       /* Disable tx to avoid short circuit when tx and rx share the same wire. */
+       UCSR0B &= ~BV(TXEN);
+       /* Enable Rx */
+       UCSR0B |= BV(RXEN);
+       /* Delete TRANSMIT_COMPLETE_BIT flag */
+       UCSR0A |= BV(TXC);
+       return c;
+}
+
+
+/*!
+ * Get a character from the serial line.
+ * If ther is no character in the buffer this function wait until
+ * one is received (no timeout).
+ *
+ * \return the character received.
+ */
+int _ser_getchar(void)
+{
+       /* Wait for data */
+       while (!(UCSR0A & BV(RXC))) {}
+       return UDR0;
+
+}
+
+
+/*!
+ * Get a character from the receiver buffer
+ * If the buffer is empty, ser_getchar_nowait() returns
+ * immediatly EOF.
+ */
+int _ser_getchar_nowait(void)
+{
+       if (!(UCSR0A & BV(RXC))) return EOF;
+       else return UDR0;
+}
+
+void _ser_settimeouts(void)
+{
+}
+
+/*!
+ * Set the baudrate.
+ */
+void _ser_setbaudrate(unsigned long rate)
+{
+       /* Compute baud-rate period */
+       uint16_t period = (((CLOCK_FREQ / 16UL) + (rate / 2)) / rate) - 1;
+
+       UBRR0H = (period) >> 8;
+       UBRR0L = (period);
+}
+
+/*!
+ * Send a string.
+ */
+int _ser_print(const char *s)
+{
+       while(*s) _ser_putchar(*s++);
+       return 0;
+}
+
+
+void _ser_setparity(int parity)
+{
+       /* Set the new parity */
+       UCSR0C |= (UCSR0C & ~(BV(UPM1) | BV(UPM0))) | (parity << UPM0); 
+}
+
+/*!
+ * Dummy functions.
+ */
+void _ser_purge(void)
+{
+       while (_ser_getchar_nowait() != EOF) {}
+}
+
+/*!
+ * Initialize serial.
+ */
+struct Serial * _ser_open(void)
+{
+       /*
+        * Set Rx and Tx pins as input to avoid short
+        * circuit when serial is disabled.
+        */
+       DDRE  &= ~(BV(PE0)|BV(PE1));
+       PORTE &= ~BV(PE0);
+       PORTE |=  BV(PE1);
+       /* Enable only Rx section */
+       UCSR0B = BV(RXEN);
+       return NULL;
+}
+
+
+/*!
+ * Clean up serial port, disabling the associated hardware.
+ */
+void _ser_close(void)
+{
+       /* Disable Rx & Tx. */
+       UCSR0B &= ~(BV(RXEN) | BV(TXEN));
+}

diff --git a/drv/ser_simple.h b/drv/ser_simple.h
new file mode 100755 (executable)
index 0000000..c14e7af
--- /dev/null
+++ b/drv/ser_simple.h
@@ -0,0 +1,143 @@
+/*!
+ * \file
+ * <!--
+ * Copyright 2003,2004 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 2000 Bernardo Innocenti <bernie@codewiz.org>
+ * -->
+ *
+ * \brief Simple serial I/O driver
+ *
+ * \version $Id$
+ * \author Bernardo Innocenti <bernie@develer.com>
+ * \author Francesco Sacchi <batt@develer.com>
+ */
+
+/*#*
+ *#* $Log$
+ *#* Revision 1.1  2005/04/12 01:37:50  bernie
+ *#* Import into DevLib.
+ *#*
+ *#* Revision 1.5  2004/10/20 13:37:49  batt
+ *#* Change testing of simple serial instead of ARCH_BOOT in sc driver.
+ *#*
+ *#* Revision 1.4  2004/10/15 12:22:04  batt
+ *#* Readd ';' in setstatus macro.
+ *#*
+ *#* Revision 1.3  2004/10/15 12:13:57  batt
+ *#* Correct \brief header.
+ *#*
+ *#* Revision 1.2  2004/10/15 11:54:21  batt
+ *#* Reformat.
+ *#*
+ *#* Revision 1.1  2004/10/13 16:35:36  batt
+ *#* New (simple) serial driver.
+ *#*
+ *#*
+ */
+#ifndef SER_SIMPLE_H
+#define SER_SIMPLE_H
+
+/* For checking which serial driver is linked */
+#define SER_SIMPLE
+
+#include <config.h>
+#include <compiler.h>
+
+
+#if 0
+#if CPU_AVR
+       typedef uint8_t serstatus_t;
+
+       /* Software errors */
+       #define SERRF_RXFIFOOVERRUN  BV(0)  /*!< Rx FIFO buffer overrun */
+       #define SERRF_RXTIMEOUT      BV(5)  /*!< Receive timeout */
+       #define SERRF_TXTIMEOUT      BV(6)  /*!< Transmit timeout */
+
+       /* Hardware errors */
+       #define SERRF_RXSROVERRUN    BV(3)  /*!< Rx shift register overrun */
+       #define SERRF_FRAMEERROR     BV(4)  /*!< Stop bit missing */
+       #define SERRF_PARITYERROR    BV(7)  /*!< Parity error */
+#else
+       #error unknown architecture
+#endif
+/*\}*/
+
+/*!
+ * \name Serial hw numbers
+ *
+ * \{
+ */
+enum
+{
+#if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128
+       SER_UART0,
+       SER_UART1,
+       SER_SPI,
+#elif CPU_AVR_ATMEGA103 || CPU_AVR_ATMEGA8
+       SER_UART0,
+       SER_SPI,
+#else
+       #error unknown architecture
+#endif
+       SER_CNT  /*!< Number of serial ports */
+};
+/*\}*/
+#endif
+
+/*! \name Parity settings for ser_setparity() */
+/*\{*/
+#define SER_PARITY_NONE  0
+#define SER_PARITY_EVEN  2
+#define SER_PARITY_ODD   3
+/*\}*/
+
+
+/*! Serial handle structure */
+struct Serial;
+
+/* Function prototypes */
+extern int _ser_putchar(int c);
+extern int _ser_getchar(void);
+extern int _ser_getchar_nowait(void);
+/*
+extern int ser_write(struct Serial *port, const void *buf, size_t len);
+extern int ser_read(struct Serial *port, void *buf, size_t size);
+
+extern int ser_printf(struct Serial *port, const char *format, ...) FORMAT(__printf__, 2, 3);
+
+extern int ser_gets(struct Serial *port, char *buf, int size);
+extern int ser_gets_echo(struct Serial *port, char *buf, int size, bool echo);
+*/
+extern int _ser_print(const char *s);
+
+extern void _ser_setbaudrate(unsigned long rate);
+extern void _ser_setparity(int parity);
+extern void _ser_settimeouts(void);
+extern void _ser_setstatus(void);
+/*
+extern void ser_resync(struct Serial *port, time_t delay);
+extern void ser_drain(struct Serial *port);
+*/
+extern void _ser_purge(void);
+extern struct Serial *_ser_open(void);
+extern void _ser_close(void);
+
+/*!
+ * \name Functions implemented as macros
+ *
+ * \{
+ */
+#define ser_putchar(c, port)        _ser_putchar(c)
+#define ser_getchar(port)           _ser_getchar()
+#define ser_getchar_nowait(port)    _ser_getchar_nowait()
+#define ser_print(port, s)          _ser_print(s)
+#define ser_setbaudrate(port, y)    _ser_setbaudrate(y)
+#define ser_setparity(port, par)    _ser_setparity(par)
+#define ser_settimeouts(port, y, z) _ser_settimeouts()
+#define ser_purge(port)             _ser_purge()
+#define ser_open(port)              _ser_open()
+#define ser_getstatus(h)            0
+#define ser_setstatus(h, x)         do {(void)(x);} while(0)
+/* \} */
+
+#endif /* SER_SIMPLE_H */

diff --git a/drv/timer_simple.c b/drv/timer_simple.c
new file mode 100755 (executable)
index 0000000..570ae42
--- /dev/null
+++ b/drv/timer_simple.c
@@ -0,0 +1,80 @@
+/*!
+ * \file
+ * <!--
+ * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Some simple delay routines.
+ *
+ * Simple serial driver
+ * \version $Id$
+ * \author Francesco Sacchi <batt@develer.com>
+ */
+
+/*#*
+ *#* $Log$
+ *#* Revision 1.1  2005/04/12 01:37:50  bernie
+ *#* Import into DevLib.
+ *#*
+ *#* Revision 1.8  2005/04/12 01:18:09  bernie
+ *#* time_t -> mtime_t.
+ *#*
+ *#* Revision 1.7  2005/03/20 04:18:41  bernie
+ *#* Fixes for CONFIG_WATCHDOG == 0.
+ *#*
+ *#* Revision 1.6  2004/10/27 09:38:07  aleph
+ *#* Bootloader working with watchdog enabled
+ *#*
+ *#* Revision 1.5  2004/10/20 10:00:37  customer_pw
+ *#* Add newline at eof
+ *#*
+ *#* Revision 1.4  2004/10/14 14:13:09  batt
+ *#* Add comment.
+ *#*
+ *#* Revision 1.3  2004/10/14 13:29:20  batt
+ *#* Fix 0ms delay bug.
+ *#*
+ *#* Revision 1.2  2004/10/13 17:53:05  batt
+ *#* Delay with hw timer.
+ *#*
+ *#* Revision 1.1  2004/10/13 16:36:32  batt
+ *#* Simplified timer delay routines.
+ *#*
+ *#*/
+#include "hw.h"
+#include "timer_simple.h"
+#include <drv/wdt.h>
+#include <compiler.h>
+#include <cpu.h>
+#include <macros.h> /* BV() */
+
+#include <avr/io.h>
+
+
+#define MS_PER_SEC       1000UL
+#define TIMER_PRESCALER  64UL
+#define TIMER_DELAY_1MS  (255 - CLOCK_FREQ / TIMER_PRESCALER / MS_PER_SEC)
+
+/*!
+ * Wait \a time ms using timer 0.
+ *
+ */
+void timer_delay(mtime_t time)
+{
+       /* Set timer clock to clock_freq/64 */
+       TCCR0 = BV(CS02);
+
+       while (time--)
+       {
+               /* Initialize timer counter register */
+               TCNT0 = TIMER_DELAY_1MS;
+               /* Clear overflow bit. */
+               TIFR |= BV(TOV0);
+               /* Wait overflow. */
+               while (!(TIFR & BV(TOV0)));
+#if CONFIG_WATCHDOG
+               wdt_reset();
+#endif
+       }
+}

diff --git a/drv/timer_simple.h b/drv/timer_simple.h
new file mode 100755 (executable)
index 0000000..2553630
--- /dev/null
+++ b/drv/timer_simple.h
@@ -0,0 +1,32 @@
+/*!
+ * \file
+ * <!--
+ * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
+ * -->
+ *
+ * \brief Simple delay routine
+ *
+ * \version $Id$
+  * \author Francesco Sacchi <batt@develer.com>
+ */
+
+/*#*
+ *#* $Log$
+ *#* Revision 1.1  2005/04/12 01:37:50  bernie
+ *#* Import into DevLib.
+ *#*
+ *#* Revision 1.2  2005/04/12 01:18:09  bernie
+ *#* time_t -> mtime_t.
+ *#*
+ *#* Revision 1.1  2004/10/13 16:36:32  batt
+ *#* Simplified timer delay routines.
+ *#*
+ *#*
+ */
+#ifndef TIMER_SIMPLE_H
+#include <compiler.h>
+
+extern void timer_delay(mtime_t time);
+#define TIMER_SIMPLE_H
+
+#endif /* TIMER_SIMPLE_H */