Questions about passing param to BlynkTimer's setTimeout (or any other timer func)

Need Help With My Project
1

Hi. I am trying to create a timer for some function call and pass a parameter to it. Using global param inside a function is inapplicable in my case because this param can change before the actual deferred call of the function, but I need to use the initial value.

If we simply have some function like: void testTimer(int valToSet)
and create timer like this: timer.setTimeout(1000L, testTimer, testParameter);
where testParameter is some int var: int testParameter = 45; declared before setTimeout call,
then we have an error:
invalid conversion from 'void (*)(int)' to 'timer_callback_p {aka void (*)(void*)}' [-fpermissive]

I looked through the BlynkTimer sources and went to this solution for int vals:
function should use void * arg: void testTimer(void *valToSet)
And timer should be created like this: timer.setTimeout(1000L, testTimer, (void*)testParameter);
Then in function we need to use (intptr_t)valToSet type cast.

Or in sketch:

#include <BlynkSimpleEsp8266_SSL.h>

BlynkTimer timer;

void setup()
{
  Serial.begin(115200);

  int testParameter = 45;
  timer.setTimeout(1000L, testTimer, (void*)testParameter);
  
  testParameter = 99;
  testTimer((void*)testParameter);
}

void loop()
{
  timer.run();
}

void testTimer(void *valToSet) {
  //intptr_t n = (intptr_t)(valToSet);
  Serial.print("Test function with input: ");
  Serial.println((intptr_t)valToSet);
}

The question is: Is there a simplier way to use blynk timer parameter as arg for called function
and how to use float args (I didn’t succeed in passing float args like this)?

Thanks

2

That’s the way it works I’m afraid. I think it’s void though so technically you could pass anything. Ints, strings etc you just have to specify what it is in the function.

See my code here I just pass ints though.
https://community.blynk.cc/t/toolbox-lock/36689?u=justbertc

Edit:
So in your function, maybe just try casting to float?

#include <BlynkSimpleEsp8266_SSL.h>

BlynkTimer timer;

void setup()
{
  Serial.begin(115200);

  float testParameter = 45.1;
  timer.setTimeout(1000L, testTimer, (void*)testParameter);
  
  testParameter = 99.9;
  testTimer((void*)testParameter);
}

void loop()
{
  timer.run();
}

void testTimer(void *valToSet) {
  //intptr_t n = (intptr_t)(valToSet);
  Serial.print("Test function with input: ");
  Serial.println((float)valToSet);
}