本帖最后由 yuyy1989 于 2024-4-29 20:52 编辑
要驱动的LCD是这块
用到的IO口有5个，CS A0 RST MOSI SCK，其中CS A0 RST使用GPIO_output模式就行，使用AT32 Work Bench配置SPI
使用的GPIO
spi发送方法和LCD初始化方法
YUYY_HS12864G18B_DEV_Type lcd_dev;
void lcd_spiwritebyte(spi_type *spix,uint8_t byte)
{
while(spi_i2s_flag_get(spix, SPI_I2S_TDBE_FLAG) == RESET);
spi_i2s_data_transmit(spix,byte);
}
void lcd_init()
{
lcd_dev.cs.gpio = LCD_CS_GPIO_PORT;
lcd_dev.cs.pin = LCD_CS_PIN;
lcd_dev.a0.gpio = LCD_A0_GPIO_PORT;
lcd_dev.a0.pin = LCD_A0_PIN;
lcd_dev.rst.gpio = LCD_RST_GPIO_PORT;
lcd_dev.rst.pin = LCD_RST_PIN;
lcd_dev.spix = SPI1;
lcd_dev.spi_sendbyte_func = (YUYY_HS12864G18B_SpiWriteByteFunc_Type)lcd_spiwritebyte;
YUYY_HS12864G18B_Init(&lcd_dev);
YUYY_HS12864G18B_ClearScreen(&lcd_dev);
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,0,0," AT32F405 TEST");
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,2,0," LCD use SPI");
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,4,0," bbs.21ic.com");
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,6,0,"Code by yuyy1989");
YUYY_HS12864G18B_DisplayFinish(&lcd_dev);
}
void YUYY_HS12864G18B_writebyte(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t dat)
{
if(hs12864_dev->spix)
hs12864_dev->spi_sendbyte_func(hs12864_dev->spix, dat);
}
void YUYY_HS12864G18B_cs(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE lev)
{
hs12864_dev->delayus_func(5);
hs12864_dev->cs_setlev_func(&(hs12864_dev->cs),lev);
hs12864_dev->delayus_func(5);
}
void YUYY_HS12864G18B_rst(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE lev)
{
hs12864_dev->rst_setlev_func(&(hs12864_dev->rst),lev);
}
void YUYY_HS12864G18B_a0(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE lev)
{
hs12864_dev->a0_setlev_func(&(hs12864_dev->a0),lev);
}
/*
* com 0指令 1数据
*/
void YUYY_HS12864G18B_writedata(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE com,uint8_t dat)
{
YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV0);
YUYY_HS12864G18B_a0(hs12864_dev,com);
YUYY_HS12864G18B_writebyte(hs12864_dev,dat);
}
void YUYY_HS12864G18B_Init(YUYY_HS12864G18B_DEV_Type *hs12864_dev)
{
if(!hs12864_dev->a0_setlev_func)
hs12864_dev->a0_setlev_func = YUYY_GPIO_SetLev;
if(!hs12864_dev->cs_setlev_func)
hs12864_dev->cs_setlev_func = YUYY_GPIO_SetLev;
if(!hs12864_dev->mo_setlev_func)
hs12864_dev->mo_setlev_func = YUYY_GPIO_SetLev;
if(!hs12864_dev->rst_setlev_func)
hs12864_dev->rst_setlev_func = YUYY_GPIO_SetLev;
if(!hs12864_dev->sck_setlev_func)
hs12864_dev->sck_setlev_func = YUYY_GPIO_SetLev;
if(!hs12864_dev->delayus_func)
hs12864_dev->delayus_func = (YUYY_DELAY_Func_Type)YUYY_DelayUs;
YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV0);
YUYY_HS12864G18B_rst(hs12864_dev,YUYY_GPIO_LEV0);/*低电平复位*/
hs12864_dev->delayus_func(20);
YUYY_HS12864G18B_rst(hs12864_dev,YUYY_GPIO_LEV1);/*复位完毕*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xE2);/*软复位*/
hs12864_dev->delayus_func(50);
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x2C); /*升压步聚 1*/
hs12864_dev->delayus_func(50);
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x2E); /*升压步聚 2*/
hs12864_dev->delayus_func(50);
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x2F); /*升压步聚 3*/
hs12864_dev->delayus_func(50);
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x24); /*0x24粗调对比度，可设置范围0x20～0x27*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x81); /*微调对比度*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x08); /*0x28,微调对比度的值，可设置范围0x00～0x3f 1f*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xA2); /*1/9偏压比（bias）*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xC8); /*行扫描顺序：从上到下*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xA0); /*列扫描顺序：从左到右*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x40); /*起始行：第一行开始*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xAF); /*开显示*/
YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV1);
}
void YUYY_HS12864G18B_address(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t page,uint8_t column)
{
YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV0);
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xB0+page); //设置页地址。每页是 8行。一个画面的 64行被分成 8个页*/
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,((column>>4)&0x0F)+0x10); //设置列地址的高4位
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,column&0x0F); //设置列地址的低4位
}
/*全屏清屏*/
void YUYY_HS12864G18B_ClearScreen(YUYY_HS12864G18B_DEV_Type *hs12864_dev)
{
uint8_t i,j;
for(i=0;i<8;i+=1)
{
YUYY_HS12864G18B_address(hs12864_dev,i,0);
for(j=0;j<132;j+=1)
{
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,0x00);
}
}
}
/*显示8x16ASCII字符串*/
void YUYY_HS12864G18B_DisplayString8x16(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t option,uint8_t page,uint8_t column,char *text)
{
uint8_t i=0,j;
option &= 0x01;
while(text[i]>0x00)
{
if((text[i] > 0x1F)&&(text[i] < 0x7F))
{
j=text[i]-0x20;
YUYY_HS12864G18B_DisplayDatas(hs12864_dev,option,page,column,(uint8_t *)(YUYY_FONT_ASCII_TABLE_8x16+j),8,16);
column+=8;
}
i+=1;
}
}
配置RTC，设置外部低速晶振为RTC时钟源
查看用户手册
配置RTC
开启唤醒中断
在RTC初始化方法中手动使能中断
void wk_ertc_init(void)
{
/* add user code begin ertc_init 0 */
/* add user code end ertc_init 0 */
exint_init_type exint_init_struct;
/* add user code begin ertc_init 1 */
/* add user code end ertc_init 1 */
pwc_battery_powered_domain_access(TRUE);
crm_ertc_clock_select(CRM_ERTC_CLOCK_LEXT);
crm_ertc_clock_enable(TRUE);
ertc_reset();
ertc_wait_update();
ertc_divider_set(127, 255);
ertc_hour_mode_set(ERTC_HOUR_MODE_24);
ertc_time_set(22, 10, 0, ERTC_24H);
ertc_date_set(24, 4, 28, 7);
/* configure Wakeup timer */
ertc_wakeup_clock_set(ERTC_WAT_CLK_CK_B_16BITS);
ertc_wakeup_counter_set(0);
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_22;
exint_init_struct.line_polarity = EXINT_TRIGGER_RISING_EDGE;
exint_init(&exint_init_struct);
/**
* Users need to configure this interrupt functions according to the actual application.
* 1. Call the below function to enable this interrupt.
* --ertc_interrupt_enable(ERTC_WAT_INT, TRUE)
* 2. Add the user's interrupt handler code into the below function in the at32f402_405_int.c file.
* --void ERTC_WKUP_IRQHandler (void)
*/
ertc_wakeup_enable(TRUE);
/* add user code begin ertc_init 2 */
ertc_interrupt_enable(ERTC_WAT_INT,TRUE);
/* add user code end ertc_init 2 */
}
中断处理
char *WeekdayStr[7]= {"SUN","MON","TUE","WED","THU","FRI","SAT"};
void rtc_int()
{
ertc_time_type time;
char out[20];
ertc_calendar_get(&time);
sprintf(out," 20%02d-%02d-%02d %s ",time.year, time.month, time.day,WeekdayStr[time.week%7]);
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,0,0,out);
sprintf(out," %02d:%02d:%02d ",time.hour, time.min, time.sec);
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,2,0,out);
}
void ERTC_WKUP_IRQHandler(void)
{
/* add user code begin ERTC_WKUP_IRQ 0 */
if(ertc_flag_get(ERTC_WATF_FLAG) != RESET)
{
ertc_flag_clear(ERTC_WATF_FLAG);
rtc_int();
}
/* add user code end ERTC_WKUP_IRQ 0 */
/* add user code begin ERTC_WKUP_IRQ 1 */
/* add user code end ERTC_WKUP_IRQ 1 */
}
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