File Demo
```har MQTT_IP[] = "183.230.40.39"; #include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include "UART.h"
#include "osa.h"
#include "FDI_TYPE.h"
#include "FDI_FILE.h"
#undef printf
#define printf(fmt, args...) do { fatal_printf("[sdk]"fmt, ##args); } while(0)
static OSATimerRef _timer_ref = NULL;
static OSTaskRef _task_ref = NULL;
static OSFlagRef _flag_ref = NULL;
static int count = 0;
static void _timer_callback(UINT32 param);
static void _task(void *ptr);
#define _TASK_STACK_SIZE 1280
static UINT32 _task_stack[_TASK_STACK_SIZE/sizeof(UINT32)];
#define TASK_TIMER_CHANGE_FLAG_BIT 0x01
#define TASK_TIMER_CHANGE2_FLAG_BIT 0x02
// 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;
printf("debug> enter main\n");
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, 200, "filetest-task", _task, NULL);
ASSERT(ret == OS_SUCCESS);
OSATimerStart(_timer_ref, 10 * 200, 10 * 200, _timer_callback, 0); // 3 seconds timer
}
static void _timer_callback(UINT32 param)
{
printf("debug> count = %d",++count);
int temp;
temp = count %2 +1;
if (temp & 1) {
OSAFlagSet(_flag_ref, TASK_TIMER_CHANGE_FLAG_BIT, OSA_FLAG_OR);
} else {
OSAFlagSet(_flag_ref, TASK_TIMER_CHANGE2_FLAG_BIT, OSA_FLAG_OR);
}
}
static void _task(void *ptr)
{
OSA_STATUS status;
UINT32 flag_value;
UINT32 flag_mask = TASK_TIMER_CHANGE_FLAG_BIT | TASK_TIMER_CHANGE2_FLAG_BIT;
int fd = 0;
char temp[30];
while(1) {
status = OSAFlagWait(_flag_ref, flag_mask, OSA_FLAG_OR_CLEAR, &flag_value, OSA_SUSPEND);
ASSERT(status == OS_SUCCESS);
printf("debug> count = %d",count);
if (flag_value & TASK_TIMER_CHANGE_FLAG_BIT) {
fd = FDI_fopen("test_file", "wb");
if (fd != 0){
printf("debug> open file for write OK\n");
memset(temp, 0, 30);
sprintf(temp,"Hello world! _%d",count);
FDI_fwrite(temp, 20, 1, fd);
FDI_fclose(fd);
} else {
printf("debug> open file for write error\n");
}
} else if (flag_value & TASK_TIMER_CHANGE2_FLAG_BIT) {
fd = FDI_fopen("test_file", "rb");
if (fd) {
printf("debug> open file for read OK\n");
memset(temp,0,30);
FDI_fread(temp,30,1,fd);
FDI_fclose(fd);
printf("debug> temp = %s", temp);
} else {
printf("debug> open file for read error\n");
}
}
}
}
)
```