[活动专区] 【AT-START-F425测评】+ RTC电子时钟

int main(void)

{

exint_init_type exint_init_struct;

ertc_time_type time;

uint32_t temp = 0;

system_clock_config();

nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);

at32_board_init();

uart_print_init(115200);

crm_periph_clock_enable(CRM_PWC_PERIPH_CLOCK, TRUE);

pwc_battery_powered_domain_access(TRUE);

if (ertc_bpr_data_read(ERTC_DT1) != 0x1234)

{

printf("ertc has not been initialized\r\n\r\n");

ertc_config();

}

else

{

printf("ertc has been initialized\r\n\r\n"); 

ertc_wait_update();

ertc_flag_clear(ERTC_ALAF_FLAG);

exint_flag_clear(EXINT_LINE_17);

}

exint_default_para_init(&exint_init_struct);

exint_init_struct.line_enable   = TRUE;

exint_init_struct.line_mode     = EXINT_LINE_INTERRUPUT;

exint_init_struct.line_select   = EXINT_LINE_17;

exint_init_struct.line_polarity = EXINT_TRIGGER_RISING_EDGE;

exint_init(&exint_init_struct);

nvic_irq_enable(ERTC_IRQn, 0, 1);

app_oled_init();

OLED_Init();

OLED_Clear();

OLED_ShowString(0,0,"AT32F425",16);

OLED_ShowString(0,2,"OLED & RTC",16);

OLED_ShowString(8,4,"20  -  -",16);

OLED_ShowString(24,6,"  :  :",16);

while(1)

{

ertc_calendar_get(&time);

if(temp != time.sec)

{

temp = time.sec;

OLED_ShowNum(24,4,time.year,2,16);

OLED_ShowNum(48,4,time.month,2,16);

OLED_ShowNum(72,4,time.day,2,16);

OLED_ShowNum(24,6,time.hour,2,16);

OLED_ShowNum(48,6,time.min,2,16);

OLED_ShowNum(72,6,time.sec,2,16);

}

}

}

void ertc_config(void)

{

crm_periph_clock_enable(CRM_PWC_PERIPH_CLOCK, TRUE);

pwc_battery_powered_domain_access(TRUE);

crm_battery_powered_domain_reset(TRUE);

crm_battery_powered_domain_reset(FALSE);

#if defined (ERTC_CLOCK_SOURCE_LICK)

crm_clock_source_enable(CRM_CLOCK_SOURCE_LICK, TRUE);

while(crm_flag_get(CRM_LICK_STABLE_FLAG) == RESET)

{

}

crm_ertc_clock_select(CRM_ERTC_CLOCK_LICK);

ertc_clk_div_b = 255;

ertc_clk_div_a = 127;

#elif defined (ERTC_CLOCK_SOURCE_LEXT)

crm_clock_source_enable(CRM_CLOCK_SOURCE_LEXT, TRUE);

while(crm_flag_get(CRM_LEXT_STABLE_FLAG) == RESET)

{

}

crm_ertc_clock_select(CRM_ERTC_CLOCK_LEXT);

ertc_clk_div_b = 255;

ertc_clk_div_a = 127;

#endif

crm_ertc_clock_enable(TRUE);

ertc_reset();

ertc_wait_update();

ertc_divider_set(ertc_clk_div_a, ertc_clk_div_b);

ertc_hour_mode_set(ERTC_HOUR_MODE_24);

ertc_date_set(22, 3, 2, 3);

ertc_time_set(12, 0, 0, ERTC_AM);

ertc_alarm_mask_set(ERTC_ALA, ERTC_ALARM_MASK_DATE_WEEK);

ertc_alarm_week_date_select(ERTC_ALA, ERTC_SLECT_DATE);

ertc_flag_clear(ERTC_ALAF_FLAG);

ertc_bpr_data_write(ERTC_DT1, 0x1234);

}