/****************************************************************************
* configs/mikroe-stm32f4/src/up_vs1053.c
*
* Copyright (C) 2013 Ken Pettit. All rights reserved.
* Author: Ken Pettit <pettitkd@gmail.com>
*
* 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 NuttX 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdio.h>
#include <debug.h>
#include <nuttx/spi.h>
#include <nuttx/audio/audio.h>
#include <nuttx/audio/vs1053.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "mikroe-stm32f4-internal.h"
#ifdef CONFIG_VS1053
/****************************************************************************
* Definitions
****************************************************************************/
/* VS1053 is on SPI3 */
#ifndef CONFIG_STM32_SPI3
# error "Need CONFIG_STM32_SPI3 in the configuration"
#endif
/* SPI Assumptions **********************************************************/
#define VS1053_SPI_PORTNO 3 /* On SPI3 */
#define VS1053_DEVNO 0 /* Only one VS1053 */
/****************************************************************************
* Private Types
****************************************************************************/
struct stm32_lower_s
{
const struct vs1053_lower_s lower; /* Low-level MCU interface */
xcpt_t handler; /* VS1053 interrupt handler */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int up_attach(FAR const struct vs1053_lower_s *lower, xcpt_t handler);
static void up_enable(FAR const struct vs1053_lower_s *lower);
static void up_disable(FAR const struct vs1053_lower_s *lower);
static void up_reset(FAR const struct vs1053_lower_s *lower, bool state);
/****************************************************************************
* Private Data
****************************************************************************/
/* The VS1053 provides interrupts to the MCU via a GPIO pin. The
* following structure provides an MCU-independent mechanixm for controlling
* the VS1053 GPIO interrupt.
*/
static struct stm32_lower_s g_vs1053lower =
{
.lower =
{
.attach = up_attach,
.enable = up_enable,
.disable = up_disable,
.reset = up_reset
},
.handler = NULL,
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: struct vs1053_lower_s methods
****************************************************************************/
static int up_attach(FAR const struct vs1053_lower_s *lower, xcpt_t handler)
{
FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
/* Just save the handler for use when the interrupt is enabled */
priv->handler = handler;
return OK;
}
static void up_enable(FAR const struct vs1053_lower_s *lower)
{
FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
DEBUGASSERT(priv->handler);
(void)stm32_gpiosetevent(GPIO_VS1053_DREQ, false, true, true, priv->handler);
}
static void up_disable(FAR const struct vs1053_lower_s *lower)
{
(void)stm32_gpiosetevent(GPIO_VS1053_DREQ, false, true, true, NULL);
}
static void up_reset(FAR const struct vs1053_lower_s *lower, bool state)
{
stm32_gpiowrite(GPIO_VS1053_RST, state);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_netinitialize
****************************************************************************/
void up_vs1053initialize(FAR struct spi_dev_s* spi)
{
int ret;
int x;
char name[8];
FAR struct audio_lowerhalf_s *pVs1053;
/* Assumptions:
* 1) SPI pins were configured in up_spi.c early in the boot-up phase.
* 2) Clocking for the SPI1 peripheral was also provided earlier in boot-up.
*/
/* Take VS1053 out of reset (active low)*/
(void)stm32_configgpio(GPIO_VS1053_RST);
(void)stm32_configgpio(GPIO_VS1053_DREQ);
stm32_gpiowrite(GPIO_VS1053_RST, 0);
for (x = 0; x < 10000; x++);
stm32_gpiowrite(GPIO_VS1053_RST, 1);
/* Bind the SPI port to the VS1053 driver */
pVs1053 = vs1053_initialize(spi, &g_vs1053lower.lower, VS1053_DEVNO);
if (ret < 0)
{
audlldbg("Failed to bind SPI port %d VS1053 device: %d\n",
VS1053_DEVNO, ret);
return;
}
/* Now register the audio device */
sprintf(name, "mp3%d", VS1053_DEVNO);
ret = audio_register(name, pVs1053);
if (ret < 0)
{
auddbg("up_vs1053initialize: Failed to register VS1053 Audio device\n");
}
audllvdbg("Bound SPI port to VS1053 device %s\n", name);
}
#endif /* CONFIG_VS1053 */
