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287 lines
10 KiB
C
287 lines
10 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 remote-mp3-wtv020sd
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* @{
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*
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* Driver to control the MP3 WTV020SD board in MP3 mode (GPIO based) and the
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* 2-line serial mode (CLK/DI). Loop Mode and Key Modes not implemented.
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* More product information available at:
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* http://avrproject.ru/chasy-budilnik/WTV020SD.pdf
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* An example on how to wire with a sound power amplifier and speakers at
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* http://www.hackster.io/zolertia
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* @{
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*
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* \file
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* Header file for the MP3 WTV020SD driver
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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 "mp3-wtv020sd.h"
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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/*
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* The WTV020SD can be used in MP3 mode (GPIO-controlled) or 2-line mode (CLK
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* and DATA line). The following pin-out can be implemented without reusing
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* the pins as below (in 2-line mode the CLK/DATA functions replace the VOL+/-
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* keys, others remain the same), but this would require more GPIOs to
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* interface all functions, so we chose the configuration that uses the less
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* number of GPIOs, and emulate all functions available in each mode
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*/
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#ifndef MP3_WTV020SD_P07_PORT
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#define MP3_WTV020SD_P07_PORT GPIO_B_NUM
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#endif
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#ifndef MP3_WTV020SD_P07_PIN
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#define MP3_WTV020SD_P07_PIN 0
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#endif
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#ifndef MP3_WTV020SD_P02_PORT
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#define MP3_WTV020SD_P02_PORT GPIO_B_NUM
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#endif
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#ifndef MP3_WTV020SD_P02_PIN
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#define MP3_WTV020SD_P02_PIN 1
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#endif
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#ifndef MP3_WTV020SD_P06_PORT
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#define MP3_WTV020SD_P06_PORT GPIO_C_NUM
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#endif
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#ifndef MP3_WTV020SD_P06_PIN
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#define MP3_WTV020SD_P06_PIN 1
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#endif
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#ifndef MP3_WTV020SD_P04_PORT
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#define MP3_WTV020SD_P04_PORT GPIO_B_NUM
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#endif
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#ifndef MP3_WTV020SD_P04_PIN
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#define MP3_WTV020SD_P04_PIN 0
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#endif
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#ifndef MP3_WTV020SD_P05_PORT
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#define MP3_WTV020SD_P05_PORT GPIO_B_NUM
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#endif
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#ifndef MP3_WTV020SD_P05_PIN
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#define MP3_WTV020SD_P05_PIN 1
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#endif
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#ifndef MP3_WTV020SD_RESET_PORT
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#define MP3_WTV020SD_RESET_PORT GPIO_B_NUM
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#endif
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#ifndef MP3_WTV020SD_RESET_PIN
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#define MP3_WTV020SD_RESET_PIN 1
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#endif
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/* The BUSY pin is shared between operation modes */
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#define MP3_BUSY_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P06_PORT)
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#define MP3_BUSY_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P06_PIN)
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#define MP3_PLAY_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P07_PORT)
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#define MP3_PLAY_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P07_PIN)
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#define MP3_NEXT_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P02_PORT)
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#define MP3_NEXT_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P02_PIN)
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#define MP3_RESET_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_RESET_PORT)
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#define MP3_RESET_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_RESET_PIN)
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#define MP3_CLK_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P04_PORT)
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#define MP3_CLK_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P04_PIN)
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#define MP3_DATA_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P05_PORT)
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#define MP3_DATA_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P05_PIN)
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/*---------------------------------------------------------------------------*/
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static uint8_t initialized = 0;
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static int mp3_line_command(uint16_t cmd);
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_config(uint8_t mode)
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{
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if(mode != MP3_WTV020SD_GPIO_MODE && mode != MP3_WTV020SD_LINE_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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if(mode == MP3_WTV020SD_GPIO_MODE) {
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GPIO_SOFTWARE_CONTROL(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
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GPIO_SET_OUTPUT(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
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GPIO_SET_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
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GPIO_SOFTWARE_CONTROL(MP3_NEXT_PORT_BASE, MP3_NEXT_PIN_MASK);
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GPIO_SET_OUTPUT(MP3_NEXT_PORT_BASE, MP3_NEXT_PIN_MASK);
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GPIO_SET_PIN(MP3_NEXT_PORT_BASE, MP3_NEXT_PIN_MASK);
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} else {
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GPIO_SOFTWARE_CONTROL(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
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GPIO_SET_OUTPUT(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
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GPIO_SET_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
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GPIO_SOFTWARE_CONTROL(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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GPIO_SET_OUTPUT(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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GPIO_SET_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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GPIO_SOFTWARE_CONTROL(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
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GPIO_SET_OUTPUT(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
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GPIO_SET_PIN(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
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}
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GPIO_SOFTWARE_CONTROL(MP3_BUSY_PORT_BASE, MP3_BUSY_PIN_MASK);
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GPIO_SET_INPUT(MP3_BUSY_PORT_BASE, MP3_BUSY_PIN_MASK);
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initialized = mode;
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_gpio_play(void)
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{
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if(initialized != MP3_WTV020SD_GPIO_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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GPIO_CLR_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_gpio_stop(void)
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{
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if(initialized != MP3_WTV020SD_GPIO_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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GPIO_SET_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_gpio_next(void)
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{
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if(initialized != MP3_WTV020SD_GPIO_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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GPIO_CLR_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
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clock_delay_usec(MP3_USEC_DELAY);
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GPIO_SET_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_busy(void)
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{
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if((initialized != MP3_WTV020SD_GPIO_MODE) &&
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(initialized != MP3_WTV020SD_LINE_MODE)) {
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return MP3_WTV020SD_ERROR;
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}
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if(GPIO_READ_PIN(MP3_BUSY_PORT_BASE, MP3_BUSY_PIN_MASK)) {
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return MP3_WTV020SD_BUSY;
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}
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return MP3_WTV020SD_IDLE;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_reset(void)
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{
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if(initialized != MP3_WTV020SD_LINE_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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GPIO_CLR_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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GPIO_SET_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
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GPIO_CLR_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
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clock_delay_usec(MP3_USEC_DELAY);
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GPIO_SET_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
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GPIO_SET_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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clock_delay_usec(MP3_USEC_RESET_DELAY);
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_sync_play(uint16_t track)
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{
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if(initialized != MP3_WTV020SD_LINE_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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mp3_line_command(track);
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while(mp3_wtv020sd_busy());
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_async_play(uint16_t track)
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{
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if(initialized != MP3_WTV020SD_LINE_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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mp3_line_command(track);
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_stop(void)
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{
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if(initialized != MP3_WTV020SD_LINE_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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mp3_line_command(MP3_WTV020SD_STOP_VAL);
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_wtv020sd_pause(void)
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{
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if(initialized != MP3_WTV020SD_LINE_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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mp3_line_command(MP3_WTV020SD_PLAY_PAUSE_VAL);
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return MP3_WTV020SD_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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int
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mp3_line_command(uint16_t cmd)
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{
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uint16_t mask;
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if(initialized != MP3_WTV020SD_LINE_MODE) {
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return MP3_WTV020SD_ERROR;
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}
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GPIO_CLR_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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clock_delay_usec(MP3_USEC_CMD_DELAY / 10);
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for(mask = 0x8000; mask > 0; mask >> 1) {
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GPIO_CLR_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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clock_delay_usec(MP3_USEC_CMD_DELAY / 2);
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if(cmd & mask) {
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GPIO_SET_PIN(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
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} else {
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GPIO_CLR_PIN(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
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}
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clock_delay_usec(MP3_USEC_CMD_DELAY / 2);
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GPIO_SET_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
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clock_delay_usec(MP3_USEC_CMD_DELAY);
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if(mask > 0x0001) {
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clock_delay_usec(MP3_USEC_CMD_DELAY / 10);
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}
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}
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clock_delay_usec(MP3_USEC_CMD_DELAY / 8);
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return MP3_WTV020SD_SUCCESS;
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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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