任务函数Demo
```OSATaskRef taskRef;
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include "UART.h"
#include "osa.h"
#define sdk_uart_printf(fmt, args...) do { fatal_printf("[sdk]"fmt, ##args); } while(0)
#define _TASK_STACK_SIZE 1280
static UINT32 _task_stack[_TASK_STACK_SIZE/sizeof(UINT32)];
static OSTaskRef _task_ref = NULL;
static OSATimerRef _timer_ref = NULL;
static OSFlagRef _flag_ref = NULL;
#define TASK_TIMER_CHANGE_FLAG_BIT 0x01
static void _timer_callback(UINT32 tmrId);
static void _task(void *ptr);
// Device bootup hook before Phase1Inits.
// If you have some work to be init, you may implete it here.
// ex: you may start your task here. or do some initialize here.
extern void Phase1Inits_enter(void);
// Device bootup hook after Phase1Inits.
// If you have some work to be init, you may implete it here.
// ex: you may start your task here. or do some initialize here.
extern void Phase1Inits_exit(void);
// Device bootup hook before Phase2Inits.
// If you have some work to be init, you may implete it here.
// ex: you may start your task here. or do some initialize here.
extern void Phase2Inits_enter(void);
// Device bootup hook after Phase2Inits.
// If you have some work to be init, you may implete it here.
// ex: you may start your task here. or do some initialize here.
extern void Phase2Inits_exit(void);
void Phase1Inits_enter(void)
{
}
void Phase1Inits_exit(void)
{
}
void Phase2Inits_enter(void)
{
}
void Phase2Inits_exit(void)
{
int ret;
ret = OSAFlagCreate(&_flag_ref);
ASSERT(ret == OS_SUCCESS);
ret = OSATimerCreate(&_timer_ref);
ASSERT(ret == OS_SUCCESS);
ret = OSATaskCreate(&_task_ref, _task_stack, _TASK_STACK_SIZE, 20, "test-task", _task, NULL);
ASSERT(ret == OS_SUCCESS);
sdk_uart_printf("Phase2Inits_exit OSATimerStart\n");
OSATimerStart(_timer_ref, 10 * 200, 10 * 200, _timer_callback, 0); // 10 seconds timer
}
static void _timer_callback(UINT32 tmrId)
{
OSAFlagSet(_flag_ref, TASK_TIMER_CHANGE_FLAG_BIT, OSA_FLAG_OR);
}
static void _task(void *ptr)
{
OSA_STATUS status;
UINT32 flag_value;
UINT32 flag_mask = TASK_TIMER_CHANGE_FLAG_BIT;
while(1) {
status = OSAFlagWait(_flag_ref, flag_mask, OSA_FLAG_OR_CLEAR, &flag_value, OSA_SUSPEND);
ASSERT(status == OS_SUCCESS);
if (flag_value & TASK_TIMER_CHANGE_FLAG_BIT) {
static int count = 0;
count++;
sdk_uart_printf("_task: count: %d\n", count);
if (count > 10) {
CPUartLogPrintf("_task: stop timer");
OSATimerStop(_timer_ref);
}
}
}
}
```