int/nucleo-f767-blinky/src/task.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3
   4 #ifndef STM32F767xx
   5 #include <unistd.h>
   6 #include <stdio.h>
   7 #endif
   8
   9 #include "misc.h"
  10 #include "task.h"
  11
  12 struct task tasks[MAXTASKS];
  13
  14 void task_init()
  15 {
  16         memset(&tasks, 0, sizeof(struct task)*MAXTASKS);
  17 }
  18
  19 int task_register()
  20 {
  21         uint8_t ct;
  22
  23         for(ct = 0; ct<MAXTASKS; ct++)
  24                 if(!tasks[ct].used)
  25                         break;
  26         if(ct == MAXTASKS)
  27                 die("Trying to add too much tasks...\n");
  28
  29         memset(&tasks[ct], 0, sizeof(struct task));
  30         //Read interval
  31         tasks[ct].interval = read16();
  32         //Read tasklength
  33         tasks[ct].tlen = read16();
  34
  35         if(tasks[ct].tlen > MAXTASKSIZE)
  36                 die("Task is too long: %d\n", tasks[ct].tlen);
  37         //Read task bytecode
  38         for(unsigned int i = 0; i<tasks[ct].tlen; i++){
  39                 tasks[ct].bc[i] = read_byte();
  40                 debug("t[][%i]: 0x%02x %d\n", i,
  41                         tasks[ct].bc[i], tasks[ct].bc[i]);
  42         }
  43         //Return the task number for later removal
  44         debug("Received a task of length %d\n", tasks[ct].tlen);
  45         tasks[ct].used = true;
  46         tasks[ct].lastrun = 0L;
  47         return ct;
  48 }
  49
  50 void task_delete()
  51 {
  52         tasks[read_byte()].used = false;
  53 }
  54
  55 struct task *task_get(int num)
  56 {
  57         return tasks[num].used ? &tasks[num] : NULL;
  58 }