To test the prototype, I used some tricks to simulate the baby: I got the crying sound on the Internet and simply reproduced it with an audio player. Regarding the breath, I used doll, manually pressurizing its chest in time with my breathing. I admit it's not the best test, but my children are too big to help me in these experiments!
To set up all peripherals and drivers, we can use SYSINIT.sh
, as in the following command:
root@beaglebone:~# ./SYSINIT.sh done!
Note
This command can be found in the chapter_06/SYSINIT.sh
file in the book's example code repository.
Then, I executed both the adc
and lcd.sh
programs by using the following command line in order to send all outputs to the terminal that runs on the tiny LCD:
root@beaglebone:~# ./adc | ./lcd.sh > /dev/tty0