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Updated SPI code driver

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This commit is contained in:
maxxir_w
2019-03-25 08:29:53 +04:00
parent d3a6406b68
commit d0282a866d
3 changed files with 12 additions and 81 deletions
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4
11_m644p_WIZNET_HTTPServer_FLASH_pages/globals.h
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@@ -25,6 +25,10 @@
//#define IP_WORK
//SPI CLOCK 4 or 8Mhz
#define SPI_4_MHZ
//#define SPI_8_MHZ
extern unsigned long millis(void);
extern int freeRam (void);

49
11_m644p_WIZNET_HTTPServer_FLASH_pages/spi.c
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@@ -1,45 +1,6 @@
/*
* Copyright (c) 2007, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <avr/io.h>
#include "spi.h"
//#include "contiki-conf.h"
/*
* On the Tmote sky access to I2C/SPI/UART0 must always be
* exclusive. Set spi_busy so that interrupt handlers can check if
* they are allowed to use the bus or not. Only the CC2420 radio needs
* this in practice.
*
*/
unsigned char spi_busy = 0;
#include "globals.h"
/*
* Initialize SPI bus.
@@ -77,7 +38,13 @@ spi_init(void)
/* Enables SPI, selects "master", clock rate FCK / 4 - 4Mhz, and SPI mode 0 */
SPCR = _BV(SPE) | _BV(MSTR);
//SPSR = _BV(SPI2X); //FCK / 2 - 8Mhz
#if defined(SPI_8_MHZ)
SPSR = _BV(SPI2X); //FCK / 2 - 8Mhz
#elif defined (SPI_4_MHZ)
SPSR = 0x0; //FCK / 4 - 4Mhz
#else
SPSR = 0x0; //FCK / 4 - 4Mhz
#endif
}

40
11_m644p_WIZNET_HTTPServer_FLASH_pages/spi.h
View File

@@ -1,41 +1,3 @@
/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/**
* \file
* Basic SPI macros
* \author
* Joakim Eriksson <joakime@sics.se>
* Niclas Finne <nfi@sics.se>
*/
#ifndef SPI_H_
#define SPI_H_
@@ -92,8 +54,6 @@
#define SPI_WAITFORTx_ENDED()
#endif /* SPI_WAITFORTxREADY */
extern unsigned char spi_busy;
void spi_init(void);
/* Write one character to SPI */