Adpcm File Playing; Figure 4. Dfuse Software - ST STM32F103 Series Application Note

Implementing the adpcm algorithm in high-density microcontrollers

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AN2931

Figure 4.

Select the NOR Flash memory as target, then click on the Choose button located in the

Upgrade or Verify Action area to select your ADPCM DFU image. Finally, click on

Upgrade to perform the download.

2.4

ADPCM file playing

At this point, you have succeeded in loading the ADPCM file into the NOR Flash memory. It

is now time to start the playback demo. Go to the application note package and open the

ADPCM_AN folder. Open the folder project, select the suitable project workspace and open

it in your toolchain. Build all the source files, load the project image and then run the

program.

The LCD on the STM3210E-EVAL board will display the audio commands while the joystick

and the key buttons will be used to control the demo. The allowed audio commands are:

play, pause, stop, forward, rewind and volume setting.

You can select the audio output interface, which can be the speaker provided on the

STM3210E-EVAL board, or headphones. Better audio quality is achieved with headphones.

You can connect them to the STM3210E-EVAL board via the audio jack.

DfuSe software

Doc ID 15349 Rev 2

Implementation example

11/15

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