changing analog pins data logging using sdFat library

Question

Background:

My goal is to use sdFat library, more precisely AnalogBinLogger example.

I want to log data from changing analog pins for example, I want to log from pin 0 to pin 3 for 5 minutes and then from pin 4 to pin 6 for another 5 mins and then from pin 7 to pin 9 for another 5 mins. that is going to be continuously which means I am going to get rid of the part where you have to enter "r" to start logging.

Regarding the time, I managed to figure it out, I am just using the value of the variable count, if my sampling rate is 1000 samples/sec for example then 5 minutes will be 1000*60*5 and the change will be done in this line:

if (Serial.available()) {
 // Stop ISR calls.
 adcStop();

to

if (count >1000*60*5) {
 // Stop ISR calls.
 adcStop();

and this worked fine.

My problem is with the changing pins:

const uint8_t PIN_LIST[] = {1};

I changed this line to

uint8_t PIN_LIST[3] = {};

First I removed the word const, because it's not going to be constant anymore, and I just declared an empty array, and second I am changing the pins in the loop.

Here is the loop after I got rid of doing the serial input:

void loop(void) {
int i;
for (i=0;i<=12;i+3)
{ 
 PIN_LIST[] = {i,i+1,i+2};
 logData();
 Serial.println("done");
 }}

The problem is I get this error :

1. AnalogBinLogger.ino: In function 'void loop()':
2. AnalogBinLogger:808: error: expected primary-expression before ']' token
3. AnalogBinLogger:808: error: expected primary-expression before '{' token
4. AnalogBinLogger:808: error: expected `;' before '{' token

The line 808 is:

PIN_LIST[] = {i,i+1,i+2};

So this is the only error, any help please?

The code is so long (800+ lines) if this information is not enough and you need me to explain a part then just tell me.

Answer 1

in case someone has the same problem it seems like after you initialize an array this way

uint8_t PIN_LIST[3] = {};

you won't be able to assign all the values at once:

PIN_LIST[] = {i,i+1,i+2};
instead you assign each individual value

• PIN_LIST[0] = i;
• PIN_LIST[1] = i+1;
• PIN_LIST[2] = i+2;

and now it worked : )