/*
* Copyright (c) 2015, Zolertia
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup zoul-mp3-wtv020sd
* @{
*
* Driver to control the MP3 WTV020SD board in MP3 mode (GPIO based) and the
* 2-line serial mode (CLK/DI). Loop Mode and Key Modes not implemented.
* More product information available at:
* http://avrproject.ru/chasy-budilnik/WTV020SD.pdf
* An example on how to wire with a sound power amplifier and speakers at
* http://www.hackster.io/zolertia
* @{
*
* \file
* Header file for the MP3 WTV020SD driver
*/
/*---------------------------------------------------------------------------*/
#include "contiki.h"
#include "dev/gpio.h"
#include "mp3-wtv020sd.h"
#include <stdint.h>
/*---------------------------------------------------------------------------*/
/*
* The WTV020SD can be used in MP3 mode (GPIO-controlled) or 2-line mode (CLK
* and DATA line). The following pin-out can be implemented without reusing
* the pins as below (in 2-line mode the CLK/DATA functions replace the VOL+/-
* keys, others remain the same), but this would require more GPIOs to
* interface all functions, so we chose the configuration that uses the less
* number of GPIOs, and emulate all functions available in each mode
*/
#ifndef MP3_WTV020SD_P07_PORT
#define MP3_WTV020SD_P07_PORT GPIO_B_NUM
#endif
#ifndef MP3_WTV020SD_P07_PIN
#define MP3_WTV020SD_P07_PIN 0
#endif
#ifndef MP3_WTV020SD_P02_PORT
#define MP3_WTV020SD_P02_PORT GPIO_B_NUM
#endif
#ifndef MP3_WTV020SD_P02_PIN
#define MP3_WTV020SD_P02_PIN 1
#endif
#ifndef MP3_WTV020SD_P06_PORT
#define MP3_WTV020SD_P06_PORT GPIO_C_NUM
#endif
#ifndef MP3_WTV020SD_P06_PIN
#define MP3_WTV020SD_P06_PIN 1
#endif
#ifndef MP3_WTV020SD_P04_PORT
#define MP3_WTV020SD_P04_PORT GPIO_B_NUM
#endif
#ifndef MP3_WTV020SD_P04_PIN
#define MP3_WTV020SD_P04_PIN 0
#endif
#ifndef MP3_WTV020SD_P05_PORT
#define MP3_WTV020SD_P05_PORT GPIO_B_NUM
#endif
#ifndef MP3_WTV020SD_P05_PIN
#define MP3_WTV020SD_P05_PIN 1
#endif
#ifndef MP3_WTV020SD_RESET_PORT
#define MP3_WTV020SD_RESET_PORT GPIO_B_NUM
#endif
#ifndef MP3_WTV020SD_RESET_PIN
#define MP3_WTV020SD_RESET_PIN 1
#endif
/* The BUSY pin is shared between operation modes */
#define MP3_BUSY_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P06_PORT)
#define MP3_BUSY_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P06_PIN)
#define MP3_PLAY_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P07_PORT)
#define MP3_PLAY_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P07_PIN)
#define MP3_NEXT_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P02_PORT)
#define MP3_NEXT_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P02_PIN)
#define MP3_RESET_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_RESET_PORT)
#define MP3_RESET_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_RESET_PIN)
#define MP3_CLK_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P04_PORT)
#define MP3_CLK_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P04_PIN)
#define MP3_DATA_PORT_BASE GPIO_PORT_TO_BASE(MP3_WTV020SD_P05_PORT)
#define MP3_DATA_PIN_MASK GPIO_PIN_MASK(MP3_WTV020SD_P05_PIN)
/*---------------------------------------------------------------------------*/
static uint8_t initialized = 0;
static int mp3_line_command(uint16_t cmd);
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_config(uint8_t mode)
{
if(mode != MP3_WTV020SD_GPIO_MODE && mode != MP3_WTV020SD_LINE_MODE) {
return MP3_WTV020SD_ERROR;
}
if(mode == MP3_WTV020SD_GPIO_MODE) {
GPIO_SOFTWARE_CONTROL(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
GPIO_SET_OUTPUT(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
GPIO_SET_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
GPIO_SOFTWARE_CONTROL(MP3_NEXT_PORT_BASE, MP3_NEXT_PIN_MASK);
GPIO_SET_OUTPUT(MP3_NEXT_PORT_BASE, MP3_NEXT_PIN_MASK);
GPIO_SET_PIN(MP3_NEXT_PORT_BASE, MP3_NEXT_PIN_MASK);
} else {
GPIO_SOFTWARE_CONTROL(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
GPIO_SET_OUTPUT(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
GPIO_SET_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
GPIO_SOFTWARE_CONTROL(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
GPIO_SET_OUTPUT(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
GPIO_SET_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
GPIO_SOFTWARE_CONTROL(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
GPIO_SET_OUTPUT(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
GPIO_SET_PIN(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
}
GPIO_SOFTWARE_CONTROL(MP3_BUSY_PORT_BASE, MP3_BUSY_PIN_MASK);
GPIO_SET_INPUT(MP3_BUSY_PORT_BASE, MP3_BUSY_PIN_MASK);
initialized = mode;
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_gpio_play(void)
{
if(initialized != MP3_WTV020SD_GPIO_MODE) {
return MP3_WTV020SD_ERROR;
}
GPIO_CLR_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_gpio_stop(void)
{
if(initialized != MP3_WTV020SD_GPIO_MODE) {
return MP3_WTV020SD_ERROR;
}
GPIO_SET_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_gpio_next(void)
{
if(initialized != MP3_WTV020SD_GPIO_MODE) {
return MP3_WTV020SD_ERROR;
}
GPIO_CLR_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
clock_delay_usec(MP3_USEC_DELAY);
GPIO_SET_PIN(MP3_PLAY_PORT_BASE, MP3_PLAY_PIN_MASK);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_busy(void)
{
if((initialized != MP3_WTV020SD_GPIO_MODE) &&
(initialized != MP3_WTV020SD_LINE_MODE)) {
return MP3_WTV020SD_ERROR;
}
if(GPIO_READ_PIN(MP3_BUSY_PORT_BASE, MP3_BUSY_PIN_MASK)) {
return MP3_WTV020SD_BUSY;
}
return MP3_WTV020SD_IDLE;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_reset(void)
{
if(initialized != MP3_WTV020SD_LINE_MODE) {
return MP3_WTV020SD_ERROR;
}
GPIO_CLR_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
GPIO_SET_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
GPIO_CLR_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
clock_delay_usec(MP3_USEC_DELAY);
GPIO_SET_PIN(MP3_RESET_PORT_BASE, MP3_RESET_PIN_MASK);
GPIO_SET_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
clock_delay_usec(MP3_USEC_RESET_DELAY);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_sync_play(uint16_t track)
{
if(initialized != MP3_WTV020SD_LINE_MODE) {
return MP3_WTV020SD_ERROR;
}
mp3_line_command(track);
while(mp3_wtv020sd_busy());
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_async_play(uint16_t track)
{
if(initialized != MP3_WTV020SD_LINE_MODE) {
return MP3_WTV020SD_ERROR;
}
mp3_line_command(track);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_stop(void)
{
if(initialized != MP3_WTV020SD_LINE_MODE) {
return MP3_WTV020SD_ERROR;
}
mp3_line_command(MP3_WTV020SD_STOP_VAL);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_wtv020sd_pause(void)
{
if(initialized != MP3_WTV020SD_LINE_MODE) {
return MP3_WTV020SD_ERROR;
}
mp3_line_command(MP3_WTV020SD_PLAY_PAUSE_VAL);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
int
mp3_line_command(uint16_t cmd)
{
uint16_t mask;
if(initialized != MP3_WTV020SD_LINE_MODE) {
return MP3_WTV020SD_ERROR;
}
GPIO_CLR_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
clock_delay_usec(MP3_USEC_CMD_DELAY / 10);
for(mask = 0x8000; mask > 0; mask >> 1) {
GPIO_CLR_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
clock_delay_usec(MP3_USEC_CMD_DELAY / 2);
if(cmd & mask) {
GPIO_SET_PIN(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
} else {
GPIO_CLR_PIN(MP3_DATA_PORT_BASE, MP3_DATA_PIN_MASK);
}
clock_delay_usec(MP3_USEC_CMD_DELAY / 2);
GPIO_SET_PIN(MP3_CLK_PORT_BASE, MP3_CLK_PIN_MASK);
clock_delay_usec(MP3_USEC_CMD_DELAY);
if(mask > 0x0001) {
clock_delay_usec(MP3_USEC_CMD_DELAY / 10);
}
}
clock_delay_usec(MP3_USEC_CMD_DELAY / 8);
return MP3_WTV020SD_SUCCESS;
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/