MCUXpresso SDK Documentation

Version: 26.09.00-pvw2 26.09.00-pvw1 26.06.00-lts 26.03.00 25.12.00 25.09.00 latest

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pdm_sai_edma

Overview

The pdm sai edma example shows how to use pdm driver with edma:

In this example, pdm gathers one channel’s audio data though edma, then sai sends it to codec.

Supported Boards

EVK9-MIMX8ULP

Hardware requirements

• Micro USB cable

• MIMX8ULP-EVK board

• J-Link Debug Probe

• 5V power supply

• Personal Computer

• Microphone

Board settings

populate J20, J21 Connect microphone module to EVK board: 3V->J20-8 GND->J20-7 CLK->J21-4 DATA->J21-3

Please note this application can’t support running with Linux BSP!

Prepare the Demo

1. Connect 5V power supply and JLink Plus to the board, switch SW10 to power on the board

2. Connect a micro USB cable between the host PC and the J17 USB port on the target board.

3. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

4. Download the program to the target board.

5. Launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound gathered from microphone and the log would be seen on the OpenSDA terminal like:

PDM SAI Edma example started!

MIMXRT1170-EVKB

Hardware requirements

• Mini/micro USB cable

• MIMXRT1170-EVKB board

• Personal Computer

• Headphone

Board settings

Prepare the Demo

1. Connect a USB cable between the host PC and the OpenSDA USB port on the target board.

2. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

3. Download the program to the target board.

4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound from microphone(U40) and the log would be seen on the OpenSDA terminal like:

PDM SAI interrupt transfer example started!

EVK-MIMX8ULP

Hardware requirements

• Micro USB cable

• MIMX8ULP-EVK board

• J-Link Debug Probe

• 5V power supply

• Personal Computer

• Microphone

Board settings

populate J20, J21 Connect microphone module to EVK board: 3V->J20-8 GND->J20-7 CLK->J21-4 DATA->J21-3

Please note this application can’t support running with Linux BSP!

Prepare the Demo

1. Connect 5V power supply and JLink Plus to the board, switch SW10 to power on the board

2. Connect a micro USB cable between the host PC and the J17 USB port on the target board.

3. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

4. Download the program to the target board.

5. Launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound gathered from microphone and the log would be seen on the OpenSDA terminal like:

PDM SAI Edma example started!

MIMXRT1160-EVK

Hardware requirements

• Mini/micro USB cable

• MIMXRT1160-EVK board

• Personal Computer

• Headphone

Board settings

Prepare the Demo

1. Connect a USB cable between the host PC and the OpenSDA USB port on the target board.

2. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

3. Download the program to the target board.

4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound from microphone(U40) and the log would be seen on the OpenSDA terminal like:

PDM SAI interrupt transfer example started!

MIMXRT1180-EVK

Hardware requirements

• Mini/micro USB cable

• MIMXRT1180-EVK board

• Personal Computer

• Headphone

Board settings

Insert headphone to J101.

Prepare the Demo

1. Connect a USB cable between the host PC and the OpenSDA USB port on the target board.

2. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

3. Download the program to the target board.

4. Press the reset button on your board to begin running the demo.

Note

The CM7 demo is supposed to work with multicore_trigger CM33 demo in this SDK.

Running the demo

When the demo runs successfully, you can hear the sound and the log would be seen on the OpenSDA terminal like:

PDM SAI Edma example started!

FRDM-MCXN236

Hardware requirements

• Type-C USB cable

• FRDM-MCXN236 board

• Personal Computer

• Headphone

Board settings

No special settings are required.

Prepare the Demo

1. Connect a USB cable between the host PC and the MCU-Link USB port on the target board.

2. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

3. Download the program to the target board.

4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound from microphone(U7) and the log would be seen on the MCU-Link terminal like:

PDM SAI interrupt transfer example started!

MCX-N5XX-EVK

Hardware requirements

• Mini/micro USB cable

• MCX-N5XX-EVK board

• Personal Computer

• Headphone

Board settings

Short JP7 2-3, JP8 2-3, JP10 2-3, JP11 2-3

Prepare the Demo

1. Connect a USB cable between the host PC and the MCU-Link USB port on the target board.

2. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

3. Download the program to the target board.

4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound from microphone(U30) and the log would be seen on the MCU-Link terminal like:

PDM SAI interrupt transfer example started!

MIMXRT700-EVK

Hardware requirements

• Mini/micro USB cable

• MIMXRT700-EVK board

• Personal Computer

• Headphone

Board settings

Prepare the Demo

1. Connect a micro USB cable between the PC host and the MCU-LINK USB port (J54) on the board

2. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

3. Download the program to the target board.

4. Launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound from microphone(U66, U67) and the log would be seen on the terminal like:

PDM SAI Edma example started!

IMX943-EVK

Hardware requirements

• Micro USB cable

• IMX943-EVK board

• J-Link Debug Probe

• 12V~20V power supply

• Personal Computer

• Microphone

Board settings

populate J20, J21 Connect microphone module to EVK board: 3V->J20-8 GND->J20-7 CLK->J21-4 DATA->J21-3

Please note this application can’t support running with Linux BSP!

Prepare the Demo

1. Connect 12V~20V power supply and JLink Plus to the board, switch SW1(SYS_PWR) to power on the board

2. Connect a micro USB cable between the host PC and the J15(FTDI_DEBUG) USB port on the target board.

3. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

4. Download the program to the target board.

5. Launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, you can hear the sound gathered from microphone and the log would be seen on the OpenSDA terminal like:

PDM SAI Edma example started!