MC100/Applications/bsp/bsp.c

#include "bsp/bsp.h"
#include "libs/logger.h"
#include "os/os_type.h"
#include "bsp/uart.h"
#include "version.h"

static void wdog_enable(void);
static void normal_task_timer_init(void);

void bsp_init(void){
	wdog_enable();
	cpu_counts_enable();
#if LOG_UART==1
	shark_uart_init(SHARK_UART0);
#endif
	normal_task_timer_init();
}


void system_reboot(void){
	NVIC_SystemReset();
}

void wdog_reload(void){
#if CONFIG_DEBUG == 0
    fwdgt_counter_reload();
#endif    
}

static void wdog_enable(void)
{
#if CONFIG_DEBUG == 0  

	/* enable IRC40K */
	rcu_osci_on(RCU_IRC40K);

	/* wait till IRC40K is ready */
	while(SUCCESS != rcu_osci_stab_wait(RCU_IRC40K)){
	}  

	/* confiure FWDGT counter clock: 40KHz(IRC40K) / 256 = 0.15625 KHz */
	fwdgt_config(4*40000UL/256, FWDGT_PSC_DIV256);  
	/* after 4 seconds to generate a reset */
	fwdgt_enable();
#endif    
}

/* write value to FWDGT_RLD_RLD bit field */
#define RLD_RLD(regval)             (BITS(0,11) & ((uint32_t)(regval) << 0))

int wdog_set_timeout(int wdog_time)
{  
#if CONFIG_DEBUG == 0
	uint32_t flag_status = RESET;
	uint32_t timeout = FWDGT_RLD_TIMEOUT;
    /* enable write access to FWDGT_PSC,and FWDGT_RLD */
    FWDGT_CTL = FWDGT_WRITEACCESS_ENABLE;
  
    /* wait until the RUD flag to be reset */
    do{
        flag_status = FWDGT_STAT & FWDGT_STAT_RUD;
    }while((--timeout > 0U) && (RESET != flag_status));
   
    if (RESET != flag_status){
        return -1;
    }
    
    FWDGT_RLD = RLD_RLD(wdog_time*40000UL/256);

    /* reload the counter */
    FWDGT_CTL = FWDGT_KEY_RELOAD;
#endif
	return 0;
}

//10 ms
static void normal_task_timer_init(void) {
    timer_parameter_struct timer_initpara;
    u32 timer = TIMER5;
    rcu_periph_clock_enable(RCU_TIMER5);

    timer_deinit(timer);
	
	memset(&timer_initpara, 0, sizeof(timer_initpara));
    timer_initpara.prescaler        = 12000 - 1; //clk 10000
    timer_initpara.alignedmode      = TIMER_COUNTER_EDGE;
    timer_initpara.period          = 100;
    timer_initpara.clockdivision    = TIMER_CKDIV_DIV1;
    timer_initpara.repetitioncounter = 0;
    timer_init(timer,&timer_initpara);
	timer_counter_value_config(timer, 0);
	timer_autoreload_value_config(timer, 100);
	timer_counter_up_direction(timer);
	timer_auto_reload_shadow_enable(timer);
	timer_interrupt_enable(timer, TIMER_INT_UP);
	timer_interrupt_flag_clear(timer, TIMER_INT_FLAG_UP);
	nvic_irq_enable(TIMER5_IRQn, 5, 0);
	timer_enable(timer);
}