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.

History

Update LICENSE.txt default tip

2018-12-12, by Davidroid [Wed, 12 Dec 2018 15:44:02 +0000] rev 26

Update LICENSE.txt

Update OpenPDM2PCM library's license.

2018-12-12, by Davidroid [Wed, 12 Dec 2018 10:56:22 +0000] rev 25

Update OpenPDM2PCM library's license.

Updating with the new version of the libraries.

2017-07-12, by Davidroid [Wed, 12 Jul 2017 13:57:13 +0000] rev 24

Updating with the new version of the libraries.

Updating with the new version of the libraries.

2017-07-12, by Davidroid [Wed, 12 Jul 2017 13:40:29 +0000] rev 23

Updating with the new version of the libraries.

Updating with the new libraries.

2017-07-10, by Davidroid [Mon, 10 Jul 2017 17:43:25 +0000] rev 22

Updating with the new libraries.

Updating with the new libraries.

2017-07-10, by Davidroid [Mon, 10 Jul 2017 16:04:59 +0000] rev 21

Updating with the new libraries.

Simplifying code.

2017-05-05, by Davidroid [Fri, 05 May 2017 11:34:10 +0000] rev 20

Simplifying code.

Enabled 44.1 and 48 KHz configurations.

2017-05-04, by Davidroid [Thu, 04 May 2017 10:39:39 +0000] rev 19

Enabled 44.1 and 48 KHz configurations.

Correcting a typo.

2017-05-03, by Davidroid [Wed, 03 May 2017 16:33:54 +0000] rev 18

Correcting a typo.

Removing XNucleoCCA02M1_config file.

2017-05-03, by Davidroid [Wed, 03 May 2017 16:27:21 +0000] rev 17

Removing XNucleoCCA02M1_config file.