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Delete asyncSerial.cpp

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James Devine 2019-08-06 02:19:09 +02:00 committed by GitHub
parent 4fac378f9a
commit 70fb8f6770
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1 changed files with 0 additions and 55 deletions
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asyncSerial.cpp
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#include "asyncSerial.h"
#include <Arduino.h>
// Avoid being blocked in the serial write routine
AsyncSerial::AsyncSerial(int baudRate){
Serial.begin(baudRate);
txtw = 0;
txtr = 0;
tsze = 0;
terr = 0;
tmax = 0;
}
// Copy text to the buffer for future printing
void AsyncSerial::print(char *txt) {
int i, l = strlen(txt);
// If this happens there is a programming bug
if (l > TBLEN) { // Can't handle more than TBLEN at a time
terr = TXT_TOOBIG; // say error and abort
return;
}
// If the buffer is filling up to fast throw it away and return an error
if ((l + tsze) >= TBLEN) { // If there is no room in the buffer
terr = TXT_OVERFL; // Buffer overflow
return; // Simply stop printing when txt comming too fast
}
// Copy the new text onto the ring buffer for later output
// from the loop idle function
for (i=0; i<l; i++) {
txtb[txtw] = txt[i]; // Put char in the buffer and
txtw = (txtw + 1) % TBLEN; // get the next write pointer modulo TBLEN
}
tsze = (tsze + l) % TBLEN; // new buffer size
if (tsze > tmax) tmax = tsze; // track the max size
}
// Take the next character from the ring buffer and print it, called from the main loop
void AsyncSerial::PutChar() {
char c[2]; // One character zero terminated string
if ((tsze) && (!Serial.available())) { // If the buffer is not empty and not reading
//if ((tsze)) { // If the buffer is not empty and not reading
c[0] = txtb[txtr]; // Get the next character from the read pointer
c[1] = '\0'; // Build a zero terminated string
txtr = (txtr + 1) % TBLEN; // Get the next read pointer modulo TBLEN
tsze = (tsze - 1) % TBLEN; // Reduce the buffer size
Serial.print(c); // and print the character
}
}