HPLUART0M.nc
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- // $Id: HPLUART0M.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: Jason Hill, David Gay, Philip Levis, Phil Buonadonna, Joe Polastre
- * Date last modified: $Revision: 1.1.1.1 $
- *
- */
- // The hardware presentation layer. See hpl.h for the C side.
- // Note: there's a separate C side (hpl.h) to get access to the avr macros
- // The model is that HPL is stateless. If the desired interface is as stateless
- // it can be implemented here (Clock, FlashBitSPI). Otherwise you should
- // create a separate component
- /**
- * @author Jason Hill
- * @author David Gay
- * @author Philip Levis
- * @author Phil Buonadonna
- * @author Joe Polastre
- */
- module HPLUART0M {
- provides interface HPLUART as UART;
- }
- implementation
- {
- async command result_t UART.init() {
- // UART will run at:
- // 115kbps, N-8-1
- // Set 57.6 KBps
- outp(0,UBRR0H);
- outp(15, UBRR0L);
- // Set UART double speed
- outp((1<<U2X),UCSR0A);
- // Set frame format: 8 data-bits, 1 stop-bit
- outp(((1 << UCSZ1) | (1 << UCSZ0)) , UCSR0C);
- // Enable reciever and transmitter and their interrupts
- outp(((1 << RXCIE) | (1 << TXCIE) | (1 << RXEN) | (1 << TXEN)) ,UCSR0B);
- return SUCCESS;
- }
- async command result_t UART.stop() {
- outp(0x00, UCSR0A);
- outp(0x00, UCSR0B);
- outp(0x00, UCSR0C);
- return SUCCESS;
- }
- default async event result_t UART.get(uint8_t data) { return SUCCESS; }
- TOSH_SIGNAL(SIG_UART0_RECV) {
- if (inp(UCSR0A) & (1 << RXC))
- signal UART.get(inp(UDR0));
- }
- default async event result_t UART.putDone() { return SUCCESS; }
- #ifdef ENABLE_UART_DEBUG
- #warning "UART Interrups Redirected"
- #else
- TOSH_INTERRUPT(SIG_UART0_TRANS) {
- signal UART.putDone();
- }
- #endif
- command async result_t UART.put(uint8_t data) {
- atomic{
- outp(data, UDR0);
- sbi(UCSR0A, TXC);
- }
- return SUCCESS;
- }
- }