X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;ds=sidebyside;f=drv%2Fser_simple_avr.c;h=66a00222c225c1f63dc0f7c2bdf5cf84b78e93e5;hb=HEAD;hp=7805892a9912769604962e288c271ccac2f1f521;hpb=187d609e26aacfd7073ddaa5a9c761c5e9a30765;p=bertos.git diff --git a/drv/ser_simple_avr.c b/drv/ser_simple_avr.c deleted file mode 100644 index 7805892a..00000000 --- a/drv/ser_simple_avr.c +++ /dev/null @@ -1,194 +0,0 @@ -/** - * \file - * - * - * \brief Simple serial I/O driver - * - * \version $Id$ - * \author Francesco Sacchi - */ - -/*#* - *#* $Log$ - *#* Revision 1.2 2006/07/19 12:56:26 bernie - *#* Convert to new Doxygen style. - *#* - *#* 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 -#include -#include /* BV() */ -#include - -#include - -/** - * 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)); -}