From 06ae1ef9e5fe5ecaddce8408f8bd9df8bd08fb2f Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Fri, 17 Apr 2009 00:25:25 +0200 Subject: * digital/avr/modules/spi: - added software driver. --- digital/avr/modules/spi/spi_soft.h | 62 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 digital/avr/modules/spi/spi_soft.h (limited to 'digital/avr/modules/spi/spi_soft.h') diff --git a/digital/avr/modules/spi/spi_soft.h b/digital/avr/modules/spi/spi_soft.h new file mode 100644 index 00000000..8d4de289 --- /dev/null +++ b/digital/avr/modules/spi/spi_soft.h @@ -0,0 +1,62 @@ +#ifndef spi_soft_h +#define spi_soft_h +/* spi_soft.h */ +/* avr.spi - SPI AVR module. {{{ + * + * Copyright (C) 2009 Nicolas Schodet + * + * APBTeam: + * Web: http://apbteam.org/ + * Email: team AT apbteam DOT org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * }}} */ + +/* Do not be fooled by symbol names, theses are the supported modes (others + * will trigger descriptive compilation errors): */ +#define SPI_MASTER_not_supported /* supported */ +#define SPI_MODE_0_not_supported /* supported */ +#define SPI_MSB_FIRST_not_supported /* supported */ + +/** Initialise SPI driver. + * - master: slave or master mode + * - mode: clock polarity and phase + * - order: byte order (MSB or LSB) + * - speed: clock rate (SCK duration) + * + * Only mode supported is MASTER, MODE_0, MSB_FIRST. + */ +#define spi_soft_init(master, mode, order, speed) \ + master ## _not_supported \ + mode ## _not_supported \ + order ## _not_supported \ + spi_soft_init_ (speed) +void +spi_soft_init_ (uint8_t speed); + +/** Send data. */ +void +spi_soft_send (uint8_t data); + +/** Receive data. */ +uint8_t +spi_soft_recv (void); + +/** Send and receive data. */ +uint8_t +spi_soft_send_and_recv (uint8_t data); + +#endif /* spi_soft_h */ -- cgit v1.2.3