void SystemInit()
{
init_system_clock(); /* SystemCoreClock will be set here */
/* SysTick is defined in core_cm0.h */
SysTick->LOAD = (SystemCoreClock/1000UL*(unsigned long)SYS_TICK_PERIOD_IN_MS) - 1;
SysTick->VAL = 0;
SysTick->CTRL = 7; /* enable, generate interrupt (SysTick_Handler), do not divide by 2 */
}
void osmain( void )
{
int i;
int j=0;
char nb[10];
char tmbuf[30];
/* ini screen first,so that we can output info as early as possible */
init_tty(); /* initialize the screen*/
kprintf( "TTY initialized\n" );
/* init both physical and virtual memory */
init_mm();
kprintf( "Memory manager initialized\n" );
init_irq(); /*initialize irq,with all interrupte disabled.*/
kprintf( "IRQ initialized\n" );
kprintf("\nHello\n");
install_syscall();
init_all_tasks();
init_kb(); /* set keyboard IRQ,and enable it */
kprintf( "\nKeyboard initialized\n" );
init_timer(); /* initialize time, enable timer irq */
/* init_system_clock(&real_tm); */
kprintf( "\nTimer initialized\n");
init_system_clock(&start_tm);
kprintf("\nSystem start time is \n");
kprintf(timetostr(&start_tm, tmbuf));
kprintf("\nStarting first process....\n");
start_first_process();
kprintf( "\nNow I am doing a loop ,waiting for interrupt :)\n" );
while(1);
halt();
}
void system_init(void)
{
SCB_EnableICache();
SCB_EnableDCache();
DBG_INIT();
init_system_clock();
HAL_Init();
BSP_SDRAM_Init();
BSP_LED_Init(LED1);
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);
MX_FATFS_Init();
FRESULT res = f_mount(&ctx.fs, SD_Path, 0);
ASSERT_WARN(res == FR_OK);
gui_init();
}
void enable_timer()
{
init_system_clock(&real_tm);
enable_irq(TIMER_IRQ);
timefly = last_timefly = 0;
}