probably write your own handlers that is specific to what you need but you haven't given an example of what your trying to do (Forum Rule)?
Huh? Hardware Serial with interrupt driven buffered I/O exists in the Teensy drivers.
Where's that API documented?you can use the builtin serialEvent to trigger a callback when data is available. It works from the yield function which is called throughout the core so it will simulate using the actual isr. You can call yield() in your own functions to.
Where's that API documented?
char buffer[1000];
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
Serial1.begin(115200);
while(!Serial);
delay(1000);
Serial.println("Arduino serialEvent Example");
}
void loop() {
delay(1000);
}
void serialEvent1() {
digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
int i = 0;
while(Serial1.available()) buffer[i++] = Serial1.read();
buffer[i] = 0;
Serial.print(buffer);
}
void serialEvent() {
while (Serial.available()[COLOR=#ff0000] && !stringComplete[/COLOR]) { [COLOR=#0000ff]// depend on[/COLOR][COLOR=#0000ff] code in loop() to clear this flag[/COLOR]
// get the new byte:
char inChar = (char)Serial.read();
// add it to the inputString:
inputString += inChar;
// if the incoming character is a newline, set a flag
// so the main loop can do something about it:
if (inChar == '\n') {
stringComplete = true;
[COLOR=#ff0000]inputString += '\0';[/COLOR]
}
}
}
Indeed. And that's the reason for saying DMA is needed. With that, there's lots of CPU time to spare.... if you are running the Serial at these rates you are not doing much else.
because with both send and rcv on each message the LC has some spare cycles left thanks to the FIFO's - the 3.1 doubly so.... if you are running the Serial at these rates you are not doing much else.
char buffer[1000];
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
Serial1.begin(115200);
while(!Serial);
delay(1000);
Serial.println("Arduino serialEvent Example");
}
void loop() {
delay(1000);
}
void serialEvent1() {
digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
int i = 0;
while(Serial1.available()) buffer[i++] = Serial1.read();
buffer[i] = 0;
Serial.print(buffer);
}
Hi All,
It's probably too late to ask a question here...
…
Can I use interrupts in this case?
115k interrupts per second sounds slightly like an overkill...
I'm trying to do a serial logger, which stores packets to SD card.
Unfortunately, sometimes it takes too much time to write to SD card, so it looses packets, that's how I got here