ST / X_NUCLEO_CCA02M1

Library to handle the X-NUCLEO-CCA02M1 MEMS Microphones Expansion Board.

Dependencies:   ST_I2S ST_FREQUENCY_DIVIDER USBDEVICE

Dependents:   HelloWorld_CCA02M1 HelloWorld_CCA02M1_mbedOS HelloWorld_CCA02M1 Karaoke_CCA01M1_CCA02M1_mbedOS

Fork of X_NUCLEO_CCA02M1 by ST Expansion SW Team

MEMS Microphones Library

Library to handle the X-NUCLEO-CCA02M1 MEMS Microphones Expansion Board. A single board allows to record a standard 2-channel stereo signal as an array of PCM samples (16 bit/sample); in principle, it could make use of six additional MEMS microphones to realize a 8-channel audio system.


Microphones configuration

Currently the configurations supported are the following:

  • Stereo@48KHz
  • Stereo@44.1KHz (CD audio quality)
  • Stereo@32KHz
  • Stereo@16KHz
  • Stereo@8KHz
  • Mono@48KHz
  • Mono@44.1KHz
  • Mono@32KHz
  • Mono@16KHz
  • Mono@8KHz

Mono configurations need a Jumper connecting PB_5 and PB_13 on the Morpho connector to properly work.


Platform compatibility

  • This board can be currently used with the Nucleo F4 Family only, please see the ST_I2S library compatibility for further information.
  • The library is compatible both with mbed OS 5.x and mbed classic 2.x (to work with mbed classic, the main application has to import the "events" library, which is not included into the "mbed" library).


I2S Peripheral Usage

By default this board makes use of the I2S peripheral available on Nucleo boards.


Acquiring through the USB

In order to acquire the recorded PCM audio channel with an audio SW on a PC, please connect the expansion board to a USB port of the PC, and the Nucleo board to a USB power supply.

BSP/divisor.h@0:d5552d432108, 2017-02-28 (annotated)

Committer:
davide.aliprandi@st.com
Date:
Tue Feb 28 11:20:53 2017 +0100
Revision:
0:d5552d432108
Library to handle the X-NUCLEO-CCA02M1 MEMS Microphones Expansion Board.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
davide.aliprandi@st.com 0:d5552d432108 1 /**
davide.aliprandi@st.com 0:d5552d432108 2 ******************************************************************************
davide.aliprandi@st.com 0:d5552d432108 3 * @file divisor.h
davide.aliprandi@st.com 0:d5552d432108 4 * @author AST / Software Platforms and Cloud
davide.aliprandi@st.com 0:d5552d432108 5 * @version V1.0
davide.aliprandi@st.com 0:d5552d432108 6 * @date November 8th, 2016
davide.aliprandi@st.com 0:d5552d432108 7 * @brief Utilities header file for the X_NUCLEO_CCA02M1 expansion board.
davide.aliprandi@st.com 0:d5552d432108 8 ******************************************************************************
davide.aliprandi@st.com 0:d5552d432108 9 * @attention
davide.aliprandi@st.com 0:d5552d432108 10 *
davide.aliprandi@st.com 0:d5552d432108 11 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
davide.aliprandi@st.com 0:d5552d432108 12 *
davide.aliprandi@st.com 0:d5552d432108 13 * Redistribution and use in source and binary forms, with or without modification,
davide.aliprandi@st.com 0:d5552d432108 14 * are permitted provided that the following conditions are met:
davide.aliprandi@st.com 0:d5552d432108 15 * 1. Redistributions of source code must retain the above copyright notice,
davide.aliprandi@st.com 0:d5552d432108 16 * this list of conditions and the following disclaimer.
davide.aliprandi@st.com 0:d5552d432108 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
davide.aliprandi@st.com 0:d5552d432108 18 * this list of conditions and the following disclaimer in the documentation
davide.aliprandi@st.com 0:d5552d432108 19 * and/or other materials provided with the distribution.
davide.aliprandi@st.com 0:d5552d432108 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
davide.aliprandi@st.com 0:d5552d432108 21 * may be used to endorse or promote products derived from this software
davide.aliprandi@st.com 0:d5552d432108 22 * without specific prior written permission.
davide.aliprandi@st.com 0:d5552d432108 23 *
davide.aliprandi@st.com 0:d5552d432108 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
davide.aliprandi@st.com 0:d5552d432108 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
davide.aliprandi@st.com 0:d5552d432108 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
davide.aliprandi@st.com 0:d5552d432108 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
davide.aliprandi@st.com 0:d5552d432108 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
davide.aliprandi@st.com 0:d5552d432108 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
davide.aliprandi@st.com 0:d5552d432108 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
davide.aliprandi@st.com 0:d5552d432108 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
davide.aliprandi@st.com 0:d5552d432108 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
davide.aliprandi@st.com 0:d5552d432108 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
davide.aliprandi@st.com 0:d5552d432108 34 *
davide.aliprandi@st.com 0:d5552d432108 35 ******************************************************************************
davide.aliprandi@st.com 0:d5552d432108 36 */
davide.aliprandi@st.com 0:d5552d432108 37
davide.aliprandi@st.com 0:d5552d432108 38
davide.aliprandi@st.com 0:d5552d432108 39 /* Define to prevent recursive inclusion -------------------------------------*/
davide.aliprandi@st.com 0:d5552d432108 40
davide.aliprandi@st.com 0:d5552d432108 41 #ifndef __DIVISOR_H
davide.aliprandi@st.com 0:d5552d432108 42 #define __DIVISOR_H
davide.aliprandi@st.com 0:d5552d432108 43
davide.aliprandi@st.com 0:d5552d432108 44 /* Includes ------------------------------------------------------------------*/
davide.aliprandi@st.com 0:d5552d432108 45
davide.aliprandi@st.com 0:d5552d432108 46 #include <stdio.h>
davide.aliprandi@st.com 0:d5552d432108 47
davide.aliprandi@st.com 0:d5552d432108 48 #ifdef __cplusplus
davide.aliprandi@st.com 0:d5552d432108 49 extern "C" {
davide.aliprandi@st.com 0:d5552d432108 50 #endif
davide.aliprandi@st.com 0:d5552d432108 51
davide.aliprandi@st.com 0:d5552d432108 52 /* Definitions ---------------------------------------------------------------*/
davide.aliprandi@st.com 0:d5552d432108 53
davide.aliprandi@st.com 0:d5552d432108 54 #define AUDIO_IN_TIMER TIM3
davide.aliprandi@st.com 0:d5552d432108 55 #define AUDIO_IN_TIMER_CLK_ENABLE() __TIM3_CLK_ENABLE()
davide.aliprandi@st.com 0:d5552d432108 56 #define AUDIO_IN_TIMER_CHOUT_AF GPIO_AF2_TIM3
davide.aliprandi@st.com 0:d5552d432108 57 #define AUDIO_IN_TIMER_CHOUT_PIN GPIO_PIN_5
davide.aliprandi@st.com 0:d5552d432108 58 #define AUDIO_IN_TIMER_CHOUT_GPIO_PORT GPIOB
davide.aliprandi@st.com 0:d5552d432108 59 #define AUDIO_IN_TIMER_CHOUT_GPIO_PORT_CLK_ENABLE() __GPIOB_CLK_ENABLE()
davide.aliprandi@st.com 0:d5552d432108 60 #define AUDIO_IN_TIMER_CHIN_AF GPIO_AF2_TIM3
davide.aliprandi@st.com 0:d5552d432108 61 #define AUDIO_IN_TIMER_CHIN_PIN GPIO_PIN_4
davide.aliprandi@st.com 0:d5552d432108 62 #define AUDIO_IN_TIMER_CHIN_GPIO_PORT GPIOB
davide.aliprandi@st.com 0:d5552d432108 63 #define AUDIO_IN_TIMER_CHIN_GPIO_PORT_CLK_ENABLE() __GPIOB_CLK_ENABLE()
davide.aliprandi@st.com 0:d5552d432108 64
davide.aliprandi@st.com 0:d5552d432108 65
davide.aliprandi@st.com 0:d5552d432108 66 /* Functions -----------------------------------------------------------------*/
davide.aliprandi@st.com 0:d5552d432108 67
davide.aliprandi@st.com 0:d5552d432108 68 uint8_t AUDIO_IN_Timer_Init(void);
davide.aliprandi@st.com 0:d5552d432108 69 uint8_t AUDIO_IN_Timer_Start(void);
davide.aliprandi@st.com 0:d5552d432108 70
davide.aliprandi@st.com 0:d5552d432108 71 #ifdef __cplusplus
davide.aliprandi@st.com 0:d5552d432108 72 }
davide.aliprandi@st.com 0:d5552d432108 73 #endif
davide.aliprandi@st.com 0:d5552d432108 74
davide.aliprandi@st.com 0:d5552d432108 75 #endif