111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/*
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* Copyright (c) 2015, Zolertia
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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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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup zoul-led-strip
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* @{
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*
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* Driver to control a bright LED strip powered at 3VDC, drawing power directly
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* from the battery power supply. An example on how to adapt 12VDC LED strips
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* to 3VDC is provided at http://www.hackster.io/zolertia
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* @{
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*
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* \file
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* Driver for a bright LED strip
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "dev/gpio.h"
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#include "led-strip.h"
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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#ifndef LED_STRIP_PORT
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#define LED_STRIP_PORT GPIO_A_NUM
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#endif
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#ifndef LED_STRIP_PIN
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#define LED_STRIP_PIN 6
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#endif
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#define LED_STRIP_PORT_BASE GPIO_PORT_TO_BASE(LED_STRIP_PORT)
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#define LED_STRIP_PIN_MASK GPIO_PIN_MASK(LED_STRIP_PIN)
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/*---------------------------------------------------------------------------*/
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static uint8_t initialized = 0;
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/*---------------------------------------------------------------------------*/
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void
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led_strip_config(void)
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{
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/* Software controlled */
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GPIO_SOFTWARE_CONTROL(LED_STRIP_PORT_BASE, LED_STRIP_PIN_MASK);
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/* Set pin to output */
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GPIO_SET_OUTPUT(LED_STRIP_PORT_BASE, LED_STRIP_PIN_MASK);
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/* Set the pin to a default position */
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GPIO_SET_PIN(LED_STRIP_PORT_BASE, LED_STRIP_PIN_MASK);
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initialized = 1;
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}
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/*---------------------------------------------------------------------------*/
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int
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led_strip_switch(uint8_t val)
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{
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if(!initialized) {
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return LED_STRIP_ERROR;
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}
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if(val != LED_STRIP_ON && val != LED_STRIP_OFF) {
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return LED_STRIP_ERROR;
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}
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/* Set the LED to ON or OFF */
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GPIO_WRITE_PIN(LED_STRIP_PORT_BASE, LED_STRIP_PIN_MASK, val);
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return val;
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}
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/*---------------------------------------------------------------------------*/
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int
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led_strip_get(void)
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{
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if(!initialized) {
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return LED_STRIP_ERROR;
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}
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/* Inverse logic, return ON if the pin is low */
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if(GPIO_READ_PIN(LED_STRIP_PORT_BASE, LED_STRIP_PIN_MASK)) {
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return LED_STRIP_OFF;
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}
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return LED_STRIP_ON;
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}
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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*/
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