i'm trying to make a digispark to work with bluetooth and NeoPixel, while i had success into making it go on and off i would like to expand on it.
I have used the Robin2 example 5 method to reciece, and parse my data in order to get the leds color the way i want.
https://forum.arduino.cc/index.php?topic=396450.msg2727728#msg2727728 this is the code in my case - the original is in the link above
void loop() {
recvWithStartEndMarkers();
if (newData == true) {
strcpy(tempChars, receivedChars);
// this temporary copy is necessary to protect the original data
// because strtok() used in parseData() replaces the commas with \0
parseData();
strip.setBrightness(xB);
controlLed();
newData = false;
}
}
void recvWithStartEndMarkers() {
static boolean recvInProgress = false;
static byte ndx = 0;
char startMarker = '<';
char endMarker = '>';
char rc;
while (bluetooth.available() > 0 && newData == false) {
rc = bluetooth.read();
if (recvInProgress == true) {
if (rc != endMarker) {
receivedChars[ndx] = rc;
ndx++;
if (ndx >= numChars) {
ndx = numChars - 1;
}
} else {
receivedChars[ndx] = '\0'; // terminate the string
recvInProgress = false;
ndx = 0;
newData = true;
}
} else if (rc == startMarker) {
recvInProgress = true;
}
}
}
void parseData() { // split the data into its parts
char * strtokIndx; // this is used by strtok() as an index
strtokIndx = strtok(tempChars, ","); // get the first part - the string
eFx = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ","); // get the first part - the string
rC1 = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ","); // this continues where the previous call left off
gC1 = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ","); // this continues where the previous call left off
bC1 = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ",");
xS = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ",");
xB = atoi(strtokIndx); // convert this part to an integer
}
void controlLed() {
colorWipe(strip.Color(rC1, gC1, bC1), xS);
colorWipe(strip.Color(20, 50, 100), 50);
}
now i have some issues, as the ATtiny85 memory is not that great i ran into issues when i try to send longer strings, basically i want to send all these:
int eFx = 1;
int rC1 = 100;
int gC1 = 100;
int bC1 = 100;
int xS = 20;
int xB = 100;
int rC2 = 5;
int gC2 = 50;
int bC2 = 200;
but when i try to parse it with the strtokIndx method above the digispark stops working (when i add more to what is already shown in the code ex above) i guess it's due to memory issues.
i understand part of the code,but not well enough to expand it in the direction that i want.
Right now the way it works is that when i send via BTooth info in this format asd<1,24,23,54,...,>qwe the recvWithStartEndMarkers () will grab all there is between < > and store it (?) in receivedChars
then i'm not sure why and how parseData() grabs this string and not something else, is it because of the function in the loop?
strcpy(tempChars, receivedChars);
parseData();
Well, i want to try to make this process go at it again, to recieve another string under [ ] and not < > and parseData2() (maybe) on receivedChars2 to get my last 3 INTs (color values for NeoPixel) parsed and stored in order to use them without having the digispark crash out of memory
The first step would be to change the
void recvWithStartEndMarkers() {
to detect also de diffrence between < and [ and run the proper code in order to store either in receivedChars or receivedChars2
not sure how to do that, also i'm not sure if this would be useful and would solve my memory issues.
any thoughts?
here is the full code i'm running
#include <Adafruit_NeoPixel.h> // NeoPixel Lib
#include <SoftSerial.h> // Serial Lib
#define LED_PIN 2
#define LED_COUNT 30
SoftSerial bluetooth(4, 5); // RX TX
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
const byte numChars = 42;
char receivedChars[numChars];
char tempChars[numChars];
boolean newData = false;
int eFx = 1;
int rC1 = 100;
int gC1 = 100;
int bC1 = 100;
int xS = 20;
int xB = 100;
int rC2 = 5;
int gC2 = 50;
int bC2 = 200;
void setup() {
bluetooth.begin (9600);
strip.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
strip.show(); // Turn OFF all pixels ASAP
}
void loop() {
recvWithStartEndMarkers();
if (newData == true) {
strcpy(tempChars, receivedChars);
// this temporary copy is necessary to protect the original data
// because strtok() used in parseData() replaces the commas with \0
parseData();
strip.setBrightness(xB);
controlLed();
newData = false;
}
}
void recvWithStartEndMarkers() {
static boolean recvInProgress = false;
static byte ndx = 0;
char startMarker = '<';
char endMarker = '>';
char rc;
while (bluetooth.available() > 0 && newData == false) {
rc = bluetooth.read();
if (recvInProgress == true) {
if (rc != endMarker) {
receivedChars[ndx] = rc;
ndx++;
if (ndx >= numChars) {
ndx = numChars - 1;
}
} else {
receivedChars[ndx] = '\0'; // terminate the string
recvInProgress = false;
ndx = 0;
newData = true;
}
} else if (rc == startMarker) {
recvInProgress = true;
}
}
}
void parseData() { // split the data into its parts
char * strtokIndx; // this is used by strtok() as an index
strtokIndx = strtok(tempChars, ","); // get the first part - the string
eFx = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ","); // get the first part - the string
rC1 = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ","); // this continues where the previous call left off
gC1 = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ","); // this continues where the previous call left off
bC1 = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ",");
xS = atoi(strtokIndx); // convert this part to an integer
strtokIndx = strtok(NULL, ",");
xB = atoi(strtokIndx); // convert this part to an integer
}
void controlLed() {
colorWipe(strip.Color(rC1, gC1, bC1), xS);
colorWipe(strip.Color(20, 50, 100), 50);
}
void controlLed2() {
colorWipe(strip.Color(rC2, gC2, bC2), xS);
}
void colorWipe(uint32_t color, int wait) {
for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
strip.setPixelColor(i, color); // Set pixel's color (in RAM)
strip.show(); // Update strip to match
delay(wait); // Pause for a moment
}
}
