HPLADCM.nc
上传用户:joranyuan
上传日期:2022-06-23
资源大小:3306k
文件大小:4k
- // $Id: HPLADCM.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
- * Version: $Id: HPLADCM.nc,v 1.1.1.1 2005/04/22 04:26:45 acwarrie Exp $
- *
- */
- // 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
- */
- module HPLADCM {
- provides {
- interface StdControl;
- interface HPLADC as ADC;
- }
- }
- implementation
- {
- /* The port mapping table */
- bool init_portmap_done;
- uint8_t TOSH_adc_portmap[TOSH_ADC_PORTMAPSIZE];
-
- void init_portmap() {
- /* The default ADC port mapping */
- atomic {
- if( init_portmap_done == FALSE ) {
- int i;
- for (i = 0; i < TOSH_ADC_PORTMAPSIZE; i++)
- TOSH_adc_portmap[i] = i;
-
- // Setup fixed bindings associated with ATmega128 ADC
- TOSH_adc_portmap[TOS_ADC_BANDGAP_PORT] = TOSH_ACTUAL_BANDGAP_PORT;
- TOSH_adc_portmap[TOS_ADC_GND_PORT] = TOSH_ACTUAL_GND_PORT;
- init_portmap_done = TRUE;
- }
- }
- }
- command result_t StdControl.init() {
- call ADC.init();
- }
- command result_t StdControl.start() {
- }
- command result_t StdControl.stop() {
- cbi(ADCSR,ADEN);
- }
- async command result_t ADC.init() {
- init_portmap();
- // Enable ADC Interupts,
- // Set Prescaler division factor to 64
- atomic {
- outp(((1 << ADIE) | (6 << ADPS0)),ADCSR);
-
- outp(0,ADMUX);
- }
- return SUCCESS;
- }
- async command result_t ADC.setSamplingRate(uint8_t rate) {
- uint8_t current_val = inp(ADCSR);
- current_val = (current_val & 0xF8) | (rate & 0x07);
- outp(current_val, ADCSR);
- return SUCCESS;
- }
- async command result_t ADC.bindPort(uint8_t port, uint8_t adcPort) {
- if (port < TOSH_ADC_PORTMAPSIZE &&
- port != TOS_ADC_BANDGAP_PORT &&
- port != TOS_ADC_GND_PORT) {
- init_portmap();
- atomic TOSH_adc_portmap[port] = adcPort;
- return SUCCESS;
- }
- else
- return FAIL;
- }
- async command result_t ADC.samplePort(uint8_t port) {
- atomic {
- outp((TOSH_adc_portmap[port] & 0x1F), ADMUX);
- }
- sbi(ADCSR, ADEN);
- sbi(ADCSR, ADSC);
-
- return SUCCESS;
- }
- async command result_t ADC.sampleAgain() {
- sbi(ADCSR, ADSC);
- return SUCCESS;
- }
- async command result_t ADC.sampleStop() {
- // SIG_ADC does the stop
- return SUCCESS;
- }
- default async event result_t ADC.dataReady(uint16_t done) { return SUCCESS; }
- TOSH_SIGNAL(SIG_ADC) {
- uint16_t data = inw(ADCL);
- data &= 0x3ff;
- sbi(ADCSR, ADIF);
- cbi(ADCSR, ADEN);
- __nesc_enable_interrupt();
- signal ADC.dataReady(data);
- }
- }