Sending state of button using RPMSG#
Code#
init_message_channel();
while : true {
if : digital_read(P1_29) {
send_message(1);
}
else {
send_message(0);
}
delay(100);
}
Following code works on PocketBeagle, to use on other boards, please change the pins accordingly.
Explanation#
init_message_channel
is needed to setup communication channel
between ARM<->PRU. It only needs to be called once, before using RPMSG
functions.
while : true
loop runs endlessly, inside this, we check for value of
header pin P1_29, if it reads HIGH, 1 is sent to the ARM core using
send_message
and if it is LOW, 0 is sent to ARM core using
send_message
. Then PRU waits for 100ms, and repeats the steps again
and again.