184 lines
6.5 KiB
C
184 lines
6.5 KiB
C
/*
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* Copyright (c) 2016, Zolertia <http://www.zolertia.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup remote-zonik
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* @{
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* Driver for the RE-Mote Zonik sonometer board
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* @{
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* \file
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* Driver for the RE-Mote Zonik sound sensor (ZONIK)
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* \author
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* Aitor Mejias <amejias@zolertia.com>
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*/
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/*---------------------------------------------------------------------------*/
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#include <stdio.h>
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#include "contiki.h"
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#include "dev/gpio.h"
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#include "dev/i2c.h"
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#include "zonik.h"
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#include "sys/timer.h"
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#include "sys/etimer.h"
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#include "lib/sensors.h"
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/*---------------------------------------------------------------------------*/
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#define DEBUG 0
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*---------------------------------------------------------------------------*/
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#define ZONIK_INT1_PORT_BASE GPIO_PORT_TO_BASE(ZONIK_INT_PORT)
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#define ZONIK_INT1_PIN_MASK GPIO_PIN_MASK(ZONIK_INT_PIN)
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/*---------------------------------------------------------------------------*/
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static uint8_t zonik_buffer[ZONIK_FRAME_SIZE+1];
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static uint16_t zonik_status = ZONIK_DISABLED;
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/*---------------------------------------------------------------------------*/
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static struct etimer et;
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/*---------------------------------------------------------------------------*/
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PROCESS(zonik_stm_process, "Zonik process process handler");
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(zonik_stm_process, ev, data)
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{
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#if DEBUG
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static int i;
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#endif
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PROCESS_EXITHANDLER();
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PROCESS_BEGIN();
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while(1) {
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/* Wait a process */
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etimer_set(&et, ZONIK_SECOND_INTERVAL);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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/* Control the interrupt for activate the sensor */
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GPIO_SET_OUTPUT(ZONIK_INT1_PORT_BASE, ZONIK_INT1_PIN_MASK);
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GPIO_CLR_PIN(ZONIK_INT1_PORT_BASE, ZONIK_INT1_PIN_MASK);
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clock_delay_usec(ZONIK_INITIAL_WAIT_DELAY);
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i2c_master_enable();
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if(i2c_single_send(ZONIK_ADDR, ZONIK_CMD_READ) != I2C_MASTER_ERR_NONE) {
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zonik_status = ZONIK_ERROR;
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PRINTF("Zonik: Error in I2C Communication\n");
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}
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GPIO_SET_PIN(ZONIK_INT1_PORT_BASE, ZONIK_INT1_PIN_MASK);
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GPIO_SET_INPUT(ZONIK_INT1_PORT_BASE, ZONIK_INT1_PIN_MASK);
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if(zonik_status != ZONIK_ERROR) {
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etimer_set(&et, ZONIK_WAIT_ACQ);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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clock_delay_usec(ZONIK_FINAL_WAIT_DELAY);
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i2c_master_enable();
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if(i2c_burst_receive(ZONIK_ADDR, &zonik_buffer[0], ZONIK_FRAME_SIZE) !=
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I2C_MASTER_ERR_NONE) {
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zonik_status = ZONIK_ERROR;
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PRINTF("Zonik: Error in I2C Burst Mode Receive");
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}
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#if DEBUG
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PRINTF("\nZonik: ");
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for(i=0; i<ZONIK_FRAME_SIZE; i++) {
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PRINTF(" 0x%02x ", zonik_buffer[i]);
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}
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PRINTF("\n");
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#endif
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if(zonik_status != ZONIK_ERROR) {
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zonik_status = ZONIK_ACTIVE;
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}
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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static int
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status(int type)
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{
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switch(type) {
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case SENSORS_ACTIVE:
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case SENSORS_READY:
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return zonik_status;
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static int
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value(int type)
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{
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/* If the system is enabling the sensor internally. Return the same state */
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if(zonik_status == ZONIK_HW_INIT) {
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return ZONIK_HW_INIT;
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}
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/* If no valid parameter, return error */
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if(zonik_status != ZONIK_ACTIVE) {
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return ZONIK_DISABLED;
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}
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/* Return the dBA received data */
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if(type == ZONIK_DBA_LEQ_VALUE) {
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return ((uint16_t)zonik_buffer[2] << 8) + zonik_buffer[3];
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}
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/* Return the internal counter loop received data */
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if(type == ZONIK_COUNT_VALUE) {
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return ((uint16_t)zonik_buffer[0] << 8) + zonik_buffer[1];
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}
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return ZONIK_ERROR;
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}
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/*---------------------------------------------------------------------------*/
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static int
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configure(int type, int value)
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{
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if(type == ZONIK_ACTIVE) {
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if(value == ZONIK_VALUE_DEACTIVATE) {
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/* Disable the Zonik Sensor reading process */
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process_exit(&zonik_stm_process);
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zonik_status = ZONIK_DISABLED;
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return zonik_status;
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}
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/* Enable the Zonik Sensor reading process */
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i2c_init(I2C_SDA_PORT, I2C_SDA_PIN, I2C_SCL_PORT, I2C_SCL_PIN,
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I2C_SCL_NORMAL_BUS_SPEED);
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/* configuration of I2C interrupt control */
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GPIO_SOFTWARE_CONTROL(ZONIK_INT1_PORT_BASE, ZONIK_INT1_PIN_MASK);
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GPIO_SET_INPUT(ZONIK_INT1_PORT_BASE, ZONIK_INT1_PIN_MASK);
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/* Launch the main process */
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process_start(&zonik_stm_process, NULL);
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zonik_status = ZONIK_HW_INIT;
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return zonik_status;
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}
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/* Bad configuration */
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return ZONIK_ERROR;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(zonik, ZONIK_SENSOR, value, configure, status);
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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*/
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