【AT-START-M412测评】+RTC电子时钟

void oled_config()

{

gpio_init_type gpio_init_struct;

crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);

gpio_default_para_init(&gpio_init_struct);

gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;

gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;

gpio_init_struct.gpio_mode = GPIO_MODE_OUTPUT;

gpio_init_struct.gpio_pins = GPIO_PINS_5|GPIO_PINS_6;

gpio_init_struct.gpio_pull = GPIO_PULL_NONE;

gpio_init(GPIOA, &gpio_init_struct);

}

void OLED_Init(void)

{

Write_IIC_Command(0xAE); //display off

Write_IIC_Command(0x20); //Set Memory Addressing Mode

Write_IIC_Command(0x10);

Write_IIC_Command(0xb0);//Set Page Start Address for Page Addressing Mode,0-7

Write_IIC_Command(0xc8);//Set COM Output Scan Direction

Write_IIC_Command(0x00);//---set low column address

Write_IIC_Command(0x10);//---set high column address

Write_IIC_Command(0x40);//--set start line address

Write_IIC_Command(0x81);//--set contrast control register

Write_IIC_Command(0xdf);

Write_IIC_Command(0xa1);//--set segment re-map 0 to 127

Write_IIC_Command(0xa6);//--set normal display

Write_IIC_Command(0xa8);//--set multiplex ratio(1 to 64)

Write_IIC_Command(0x3F);//

Write_IIC_Command(0xa4);//0xa4,Output follows RAM content;0xa5,Output ignores RAM content

Write_IIC_Command(0xd3);//-set display offset

Write_IIC_Command(0x00);//-not offset

Write_IIC_Command(0xd5);//--set display clock divide ratio/oscillator frequency

Write_IIC_Command(0xf0);//--set divide ratio

Write_IIC_Command(0xd9);//--set pre-charge period

Write_IIC_Command(0x22); //

Write_IIC_Command(0xda);//--set com pins hardware configuration

Write_IIC_Command(0x12);

Write_IIC_Command(0xdb);//--set vcomh

Write_IIC_Command(0x20);//0x20,0.77xVcc

Write_IIC_Command(0x8d);//--set DC-DC enable

Write_IIC_Command(0x14);//

Write_IIC_Command(0xaf);//--turn on oled panel

}

void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t Char_Size)

{

unsigned char c=0,i=0;

c=chr-' ';

if(x>Max_Column-1){x=0;y=y+2;}

if(Char_Size ==16)

{

OLED_Set_Pos(x,y);

for(i=0;i<8;i++)

OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);

OLED_Set_Pos(x,y+1);

for(i=0;i<8;i++)

OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);

}

else {

OLED_Set_Pos(x,y);

for(i=0;i<6;i++)

OLED_WR_Byte(F6x8[c][i],OLED_DATA);

}

}

void OLED_ShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size2)

{

uint8_t t,temp;

uint8_t enshow=0;

for(t=0;t<len;t++)

{

temp=(num/oled_pow(10,len-t-1))%10;

if(enshow==0&&t<(len-1))

{

if(temp==0)

{

OLED_ShowChar(x+(size2/2)*t,y,' ',size2);

continue;

}else enshow=1;

}

OLED_ShowChar(x+(size2/2)*t,y,temp+'0',size2);

}

}

int main(void)

{

exint_init_type exint_init_struct;

ertc_time_type time;

uint32_t temp = 0;

ertc_clock_config();

system_clock_config();

nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);

at32_board_init();

oled_config();

OLED_Init();

OLED_Clear();

OLED_ShowString(20,0,"AT32M412",16);

OLED_ShowString(20,2," : :",16);

OLED_ShowString(20,4," - -",16);

crm_periph_clock_enable(CRM_PWC_PERIPH_CLOCK, TRUE);

pwc_battery_powered_domain_access(TRUE);

if (ertc_bpr_data_read(ERTC_DT1) != 0x1234)

{

ertc_config();

}

else

{

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_INTERRUPT;

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(ERTCAlarm_IRQn, 0, 1);

ertc_calendar_get(&time);

OLED_ShowNum(20,4,time.year,2,16);

OLED_ShowNum(44,4,time.month,2,16);

OLED_ShowNum(68,4,time.day,2,16);

while(1)

{

ertc_calendar_get(&time);

if(temp != time.sec)

{

temp = time.sec;

OLED_ShowNum(20,2,time.hour,2,16);

OLED_ShowNum(44,2,time.min,2,16);

OLED_ShowNum(68,2,time.sec,2,16);

}

}

}