ben-wpan/atusb/fw/spi.h

/*
 * fw/spi.h - ATmega8 family SPI I/O
 *
 * Written 2011, 2013 by Werner Almesberger
 * Copyright 2011, 2013 Werner Almesberger
 *
 * 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.
 */

#ifndef SPI_H
#define	SPI_H

#include <stdint.h>


void spi_begin(void);
uint8_t spi_io(uint8_t v);
void spi_end(void);
void spi_off(void);
void spi_init(void);

#define	spi_send(v)	(void) spi_io(v)
#define	spi_recv(v)	spi_io(0)

void spi_recv_block(uint8_t *buf, uint8_t n);

#endif /* !SPI_H */
atusb/fw3/: added copyright headers and title comments 2011-02-14 17:48:42 +02:00			`/*`
			`* fw/spi.h - ATmega8 family SPI I/O`
			`*`
atusb/fw/: add SPI block reception This decreases the retrieval time for a frame of 102 bytes from 660 us to 384 us, corresponding to a speed change from about 1.26 Mbps to 2.17 Mbps (102 bytes plus 2 bytes overhead). 2013-07-31 01:46:55 +03:00			`* Written 2011, 2013 by Werner Almesberger`
			`* Copyright 2011, 2013 Werner Almesberger`
atusb/fw3/: added copyright headers and title comments 2011-02-14 17:48:42 +02:00			`*`
			`* 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.`
			`*/`

atusb/fw3/: adaptation of the f32xbase USB stack 2011-02-14 04:46:36 +02:00			`#ifndef SPI_H`
			`#define SPI_H`

			`#include <stdint.h>`


			`void spi_begin(void);`
			`uint8_t spi_io(uint8_t v);`
			`void spi_end(void);`
atusb/fw/: added "lazy enabling" of UART-SPI after ATUSB_GPIO - spi.h (spi_off), spi.c: disable the UART - spi.c (spi_initialized, spi_begin, spi_init): initialize the UART if necessary - board_app.c (gpio): call spi_off to disable the UART instead of open-coding the operation - board_app.c (gpio): don't explicitly re-enable the UART but defer it to the next communication 2011-06-09 20:02:26 +03:00			`void spi_off(void);`
atusb/fw3/: adaptation of the f32xbase USB stack 2011-02-14 04:46:36 +02:00			`void spi_init(void);`

			`#define spi_send(v) (void) spi_io(v)`
			`#define spi_recv(v) spi_io(0)`

atusb/fw/: add SPI block reception This decreases the retrieval time for a frame of 102 bytes from 660 us to 384 us, corresponding to a speed change from about 1.26 Mbps to 2.17 Mbps (102 bytes plus 2 bytes overhead). 2013-07-31 01:46:55 +03:00			`void spi_recv_block(uint8_t *buf, uint8_t n);`

atusb/fw3/: adaptation of the f32xbase USB stack 2011-02-14 04:46:36 +02:00			`#endif /* !SPI_H */`