Hi everyone! I’m working with the Grove Speech Recognizer and the FRDM K64F with the Grove Base Shield v2 for connection. The datasheet says that the speech recognizer returns a value between 1 and 22 and examples use the Arduino SoftwareSerial library. Is there a SoftwareSerial in mbed? If not, …

DigitalIn only reads 0 or 1. you need AnalogIn for different values.

Hello, are you sure with what you exactly want? The sensor seems to be connected to digital pins but it communicates over UART (default baudrate: 9600) probably. Because in the example according to Grove - Speech Recognizer - Seeed Wiki (seeedstudio.com) (scroll down to an example code for Arduino…

Thank you so much for you response! I tried with UART but I’m getting 0s all the time. BufferedSerial speech(PTC17, PTC16); buf = speech.getc(); //the buffered library does not have read, so I used getc. I tried printing buf as character and int. %c gives nothing and %d just prints 0. Basical…

Module’s chip ISD9160 send you the result over UART so there is nothing else. You have no read(...) method because you use an old version of MbedOS, but getc() is also OK. But try to change this BufferedSerial speech(PTC17, PTC16); to this Serial speech(PTC17, PTC16); and verify your connectio…

Grove Speech Recognizer with K64F

Mbed OS Best practice

sprasann (Sheetal Prasanna) March 8, 2021, 2:45pm 3

Thank you for you quick response. I’m trying to use AnalogIn now but I’m confused about how to convert the analog value to its corresponding digital value?

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Grove Speech Recognizer with K64F

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