HPLSpiM.nc
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- // $Id: HPLSpiM.nc,v 1.1.1.1 2005/04/22 04:26:45 acwarrie Exp $
- /* tab:4
- * "Copyright (c) 2000-2003 The Regents of the University of California.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose, without fee, and without written agreement is
- * hereby granted, provided that the above copyright notice, the following
- * two paragraphs and the author appear in all copies of this software.
- *
- * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
- * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
- * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
- *
- * Copyright (c) 2002-2003 Intel Corporation
- * All rights reserved.
- *
- * This file is distributed under the terms in the attached INTEL-LICENSE
- * file. If you do not find these files, copies can be found by writing to
- * Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300, Berkeley, CA,
- * 94704. Attention: Intel License Inquiry.
- */
- /*
- * Authors: Jaein Jeong, Philip buonadonna
- * Date last modified: $Revision: 1.1.1.1 $
- *
- */
- /**
- * @author Jaein Jeong
- * @author Philip buonadonna
- */
- module HPLSpiM
- {
- provides interface SpiByteFifo;
- uses interface PowerManagement;
- }
- implementation
- {
- norace uint8_t OutgoingByte; // Define norace to prevent nesC 1.1 warnings
- TOSH_SIGNAL(SIG_SPI) {
- register uint8_t temp = inp(SPDR);
- outp(OutgoingByte,SPDR);
- signal SpiByteFifo.dataReady(temp);
- }
- async command result_t SpiByteFifo.writeByte(uint8_t data) {
- //while(bit_is_clear(SPSR,SPIF));
- //outp(data, SPDR);
- atomic OutgoingByte = data;
- return SUCCESS;
- }
- async command result_t SpiByteFifo.isBufBusy() {
- return bit_is_clear(SPSR,SPIF);
- }
- async command uint8_t SpiByteFifo.readByte() {
- return inp(SPDR);
- }
- async command result_t SpiByteFifo.enableIntr() {
- //sbi(SPCR,SPIE);
- outp(0xC0, SPCR);
- cbi(DDRB, 0);
- call PowerManagement.adjustPower();
- return SUCCESS;
- }
- async command result_t SpiByteFifo.disableIntr() {
- cbi(SPCR, SPIE);
- sbi(DDRB, 0);
- cbi(PORTB, 0);
- call PowerManagement.adjustPower();
- return SUCCESS;
- }
- async command result_t SpiByteFifo.initSlave() {
- atomic {
- TOSH_MAKE_SPI_SCK_INPUT();
- TOSH_MAKE_MISO_INPUT(); // miso
- TOSH_MAKE_MOSI_INPUT(); // mosi
- cbi(SPCR, CPOL); // Set proper polarity...
- cbi(SPCR, CPHA); // ...and phase
- sbi(SPCR, SPIE); // enable spi port
- sbi(SPCR, SPE);
- }
- return SUCCESS;
- }
-
- async command result_t SpiByteFifo.txMode() {
- TOSH_MAKE_MISO_OUTPUT();
- TOSH_MAKE_MOSI_OUTPUT();
- return SUCCESS;
- }
- async command result_t SpiByteFifo.rxMode() {
- TOSH_MAKE_MISO_INPUT();
- TOSH_MAKE_MOSI_INPUT();
- return SUCCESS;
- }
- }