UM0224 datasheet(27/34 Pages) STMICROELECTRONICS

27 / 34 page

STR75x demonstration software

Running the demonstrations

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First, the MCU will record data using a microphone. It will store it in the SMI after erasing the

corresponding region and displaying the following message on the LCD:

If a key is pressed, the MCU records a short data wave (3s).The following message is

displayed on the LCD:

Once recording is finished, the MCU will play the recorded wave and the following message

is displayed on the LCD:

If the "UP" or "DOWN" push-button is pressed, the following message is displayed on the

LCD:

To stop the test wave press "UP" or "DOWN" or it will be stopped automatically at the end,

and you must enter the result of the test:

Press "SEL" when the test is passed else press "LEFT".

●

VaResistor Test: tests whether the potentiometer connected to Channel3 of the ADC

works correctly. The number of the red LEDs turned on corresponds to the

potentiometer output voltage. The following message is displayed on the LCD:

If "SEL" pressed the following message is displayed on the LCD:

Press "SEL" to select whether the current test is passed or failed.

Record:Press KEY

MIC Speaker Test

Stop:in 3s/KEY

MIC Speaker Test

Play test:UP/DOWN

MIC Speaker Test

Skip test:UP/DOWN

MIC Speaker Test

Press ^SEL^

VarResistor Test

Turn the potentio

meter & Press SEL

UM0224 Datasheet(PDF) 27 Page - STMicroelectronics