PDM: cleanup and fix

[facchinm]

• Borrow hardware configuration from OpenMV port for Portenta Vision shield.

[github-actions]

Memory usage change @ d11ce67

Board	flash	%	RAM for global variables	%
arduino:mbed:envie_m4	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed:envie_m7	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed:nano33ble	🔺 0 - +64	0.0 - +0.01	🔺 0 - +32	0.0 - +0.01

Click for full report table

Board	libraries/Scheduler/examples/MultipleBlinks flash	%	libraries/Scheduler/examples/MultipleBlinks RAM for global variables	%	libraries/doom/examples/Doom flash	%	libraries/doom/examples/Doom RAM for global variables	%	libraries/KernelDebug/examples/KernelDebug flash	%	libraries/KernelDebug/examples/KernelDebug RAM for global variables	%	libraries/Portenta_SDCARD/examples/TestSDCARD flash	%	libraries/Portenta_SDCARD/examples/TestSDCARD RAM for global variables	%	libraries/Portenta_Video/examples/Envie_video_coreboot flash	%	libraries/Portenta_Video/examples/Envie_video_coreboot RAM for global variables	%	libraries/Portenta_System/examples/PortentaH7_getBootloaderInfo flash	%	libraries/Portenta_System/examples/PortentaH7_getBootloaderInfo RAM for global variables	%	libraries/Portenta_System/examples/PortentaH7_updateBootloader flash	%	libraries/Portenta_System/examples/PortentaH7_updateBootloader RAM for global variables	%	libraries/ThreadDebug/examples/ThreadDebug flash	%	libraries/ThreadDebug/examples/ThreadDebug RAM for global variables	%	libraries/USBHOST/examples/KeyboardController flash	%	libraries/USBHOST/examples/KeyboardController RAM for global variables	%	libraries/USBHOST/examples/Shell flash	%	libraries/USBHOST/examples/Shell RAM for global variables	%	libraries/WiFi/examples/PortentaWiFiFirmwareUpdater flash	%	libraries/WiFi/examples/PortentaWiFiFirmwareUpdater RAM for global variables	%	libraries/PDM/examples/PDMSerialPlotter flash	%	libraries/PDM/examples/PDMSerialPlotter RAM for global variables	%
arduino:mbed:envie_m4	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:mbed:envie_m7	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:mbed:nano33ble	0	0.0	0	0.0																									0	0.0	0	0.0													64	0.01	32	0.01

Click for full report CSV

Board,libraries/Scheduler/examples/MultipleBlinks<br>flash,%,libraries/Scheduler/examples/MultipleBlinks<br>RAM for global variables,%,libraries/doom/examples/Doom<br>flash,%,libraries/doom/examples/Doom<br>RAM for global variables,%,libraries/KernelDebug/examples/KernelDebug<br>flash,%,libraries/KernelDebug/examples/KernelDebug<br>RAM for global variables,%,libraries/Portenta_SDCARD/examples/TestSDCARD<br>flash,%,libraries/Portenta_SDCARD/examples/TestSDCARD<br>RAM for global variables,%,libraries/Portenta_Video/examples/Envie_video_coreboot<br>flash,%,libraries/Portenta_Video/examples/Envie_video_coreboot<br>RAM for global variables,%,libraries/Portenta_System/examples/PortentaH7_getBootloaderInfo<br>flash,%,libraries/Portenta_System/examples/PortentaH7_getBootloaderInfo<br>RAM for global variables,%,libraries/Portenta_System/examples/PortentaH7_updateBootloader<br>flash,%,libraries/Portenta_System/examples/PortentaH7_updateBootloader<br>RAM for global variables,%,libraries/ThreadDebug/examples/ThreadDebug<br>flash,%,libraries/ThreadDebug/examples/ThreadDebug<br>RAM for global variables,%,libraries/USBHOST/examples/KeyboardController<br>flash,%,libraries/USBHOST/examples/KeyboardController<br>RAM for global variables,%,libraries/USBHOST/examples/Shell<br>flash,%,libraries/USBHOST/examples/Shell<br>RAM for global variables,%,libraries/WiFi/examples/PortentaWiFiFirmwareUpdater<br>flash,%,libraries/WiFi/examples/PortentaWiFiFirmwareUpdater<br>RAM for global variables,%,libraries/PDM/examples/PDMSerialPlotter<br>flash,%,libraries/PDM/examples/PDMSerialPlotter<br>RAM for global variables,%
arduino:mbed:envie_m4,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:mbed:envie_m7,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:mbed:nano33ble,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,,,,,,,,,,,,,64,0.01,32,0.01

[pennam]

Working stereo modes 8kHz, 16kHz, 32kHz, 48 kHz, 64kHz and 96kHz

stereo recordings.zip

[pennam]

Working stereo and mono modes 8kHz, 16kHz, 32kHz, 48 kHz, 64kHz and 96kHz

mono stereo recordings.zip

[pennam]

Add support for 11kHz 22kHz and 44kHz sampling rates. Values must be expressed as 11025 22050 and 44100 otherwise PDM interface will fail to start.

11_22_44kHz.zip

[pennam]

Linker script section added here arduino/mbed-os#13