Global variable and freetos

[Aline]

@tony-josi-aws

I have couple of questions here:
What do you mean by cyclic tasks here? Do you mean periodic tasks that run at a specific interval?
Is the shared global variables accessed in critical sections?
It would be great if you could elaborate more on what you are trying to achieve here.

Global variables can be accessed across the application, unless they are static global variables which have there linkage limited to the files (translation units) in which they are defined. They are not scoped/linked to any particular tasks.

Thank your for your replay /

I have couple of questions here:
What do you mean by cyclic tasks here? Do you mean periodic tasks that run at a specific interval?
Oui je veux dire les fonctions crées par
response = xTask_A_CreateRestricted(XX, XX);
Basically what I want to do is:

////////////////////////////////////////////////
//Variable Globale

int  BEDPosition;// Variable for Task A
Int TTLPosition;//Variable for Task B


static const Task_A_Seeting_t repetifTask_A_Seeting = {
	  repetifTask_A,
	  repetifTask_A_Name,
      K_repetifTask_A_StackSize,
      NULL,
      K_repetifTask_A_Priority,
      NULL,
      // Regions
      {
        { (UINT32) &_RAM_soft_Start_Address__,
          (UINT32) &_RAM_soft_End_Address__,
          portMPU_REGION_R_EXECUTE
        },
        { 0,
          0,
          0
        },
        { (UINT32) &_ROM_ConfigurationStartAdr__,
          (UINT32) &_ROM_ConfigurationEndAdr__,
          portMPU_REGION_READ_WRITE
        },
      }
};

________________________________
//Création de l task A
response = xTask_A_CreateRestricted(&repetifTask_A_Seeting, &repetifTask_A_Hdl);
//Création de la task B
response = xTask_B_CreateRestricted(&repetifTask_B_Seeting, &repetifTask_B_Hdl);
______________________

Now I want task A to be unable to access the global variable TTLPosition only access BEDPosition and task B also to be unable to access the global variable BEDPosition only TTLPosition.
It’s for cyber reasons I want to create an independent task that could not communicate with other tasks, but since it shares the variables with the others, I wanted to protect the variables or do such so that the others cannot see his global variables and he could not see those of others

thank you in advance for your help