要驱动的屏幕是这个
选用PA5和PA7作为SCK 和MOSI，PA4 PA6 PA8分别作为CS RST A0
初始化SPI，用只发送模式
void spi_init()
{
GPIO_Config_T GPIO_InitStructure;
SPI_Config_T SPI1_InitStructure;
RCM_EnableAHB1PeriphClock (RCM_AHB1_PERIPH_GPIOA);
RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_SPI1);
GPIO_ConfigPinAF(GPIOA, GPIO_PIN_SOURCE_5, GPIO_AF_SPI1);
GPIO_ConfigPinAF(GPIOA, GPIO_PIN_SOURCE_7, GPIO_AF_SPI1);
GPIO_ConfigStructInit(&GPIO_InitStructure);
GPIO_InitStructure.pin = GPIO_PIN_5 | GPIO_PIN_7;
GPIO_InitStructure.speed = GPIO_SPEED_100MHz;
GPIO_InitStructure.mode = GPIO_MODE_AF;
GPIO_InitStructure.otype = GPIO_OTYPE_PP;
GPIO_InitStructure.pupd = GPIO_PUPD_NOPULL;
GPIO_Config(GPIOA, &GPIO_InitStructure);
SPI_ConfigStructInit(&SPI1_InitStructure);
SPI1_InitStructure.direction = SPI_DIRECTION_1LINE_TX;
SPI1_InitStructure.mode = SPI_MODE_MASTER;
SPI1_InitStructure.length = SPI_DATA_LENGTH_8B;
SPI1_InitStructure.polarity = SPI_CLKPOL_HIGH;
SPI1_InitStructure.phase = SPI_CLKPHA_2EDGE;
SPI1_InitStructure.nss = SPI_NSS_SOFT;
SPI1_InitStructure.baudrateDiv = SPI_BAUDRATE_DIV_8;
SPI1_InitStructure.firstBit = SPI_FIRSTBIT_MSB;
SPI1_InitStructure.crcPolynomial = 7;
SPI_Config(SPI1, &SPI1_InitStructure);
SPI_DisableCRC(SPI1);
SPI_DisableSSOutput(SPI1);
SPI_Enable(SPI1);
}
void lcd_spiwritebyte(SPI_T *spix,uint8_t byte)
{
while (SPI_I2S_ReadStatusFlag(spix, SPI_FLAG_TXBE) == RESET);
SPI_I2S_TxData(spix, byte);
}
void YUYY_HS12864G18B_writebyte(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t dat)
{
uint8_t i = 0;
if(hs12864_dev->spix)
hs12864_dev->spi_sendbyte_func(hs12864_dev->spix, dat);
else
{
while(i<8)
{
hs12864_dev->sck_setlev_func(&(hs12864_dev->sck),YUYY_GPIO_LEV0);
if(dat & 0x80)
hs12864_dev->mo_setlev_func(&(hs12864_dev->mo),YUYY_GPIO_LEV1);
else
hs12864_dev->mo_setlev_func(&(hs12864_dev->mo),YUYY_GPIO_LEV0);
hs12864_dev->sck_setlev_func(&(hs12864_dev->sck),YUYY_GPIO_LEV1);
dat <<= 1;
i += 1;
}
}
}
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);
}
}
}
//===显示测试画面：例如全显示，隔行显示，隔列显示，雪花显示=====
void YUYY_HS12864G18B_TestDisplay(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t data1,uint8_t data2)
{
uint8_t i,j;
for(j=0;j<8;j+=1)
{
YUYY_HS12864G18B_address(hs12864_dev,j,0);
for(i=0;i<64;i+=1)
{
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,data1);
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,data2);
}
}
}
void YUYY_HS12864G18B_DisplayDatas(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t option,uint8_t page,uint8_t column,uint8_t *dp,uint8_t width,uint8_t height)
{
uint8_t rev,i=0,j=0,k=0,hp=height/8;
rev = option&YUYY_FONT_DATAS_REVERSE;
if((option&YUYY_FONT_DATAS_COL_COL) == 0)
{
while (i<hp)
{
YUYY_HS12864G18B_address(hs12864_dev,page+i,column);
j=0;
while (j<width)
{
if(rev == 0)
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,*dp);
else
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,~*dp);
dp+=1;
j+=1;
}
i+=1;
}
}
else
{
while (i<hp)
{
YUYY_HS12864G18B_address(hs12864_dev,page+i,column);
k=i;
j=0;
while (j<width)
{
if(rev == 0)
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,dp[k]);
else
YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,~dp[k]);
j+=1;
k+=hp;
}
i+=1;
}
}
}
/*显示 128x64点阵图像*/
void YUYY_HS12864G18B_GisplayGraphic128x64(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t option,uint8_t page,uint8_t column,uint8_t *dp)
{
YUYY_HS12864G18B_DisplayDatas(hs12864_dev,option,page,column,dp,128,64);
}
/*显示 32x32点阵图像、汉字、生僻字或 32x32点阵的其他图标*/
void YUYY_HS12864G18B_GisplayGraphic32x32(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t option,uint8_t page,uint8_t column,uint8_t *dp)
{
YUYY_HS12864G18B_DisplayDatas(hs12864_dev,option,page,column,dp,32,32);
}
/*显示 16x16点阵图像、汉字、生僻字或 16x16点阵的其他图标*/
void YUYY_HS12864G18B_GisplayGraphic16x16(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t option,uint8_t page,uint8_t column,uint8_t *dp)
{
YUYY_HS12864G18B_DisplayDatas(hs12864_dev,option,page,column,dp,16,16);
}
/*显示8x16点阵图像、ASCII, 或8x16点阵的自造字符、其他图标*/
void YUYY_HS12864G18B_GisplayGraphic8x16(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t option,uint8_t page,uint8_t column,uint8_t *dp)
{
YUYY_HS12864G18B_DisplayDatas(hs12864_dev,option,page,column,dp,8,16);
}
/*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;
}
}
/*显示6x8ASCII字符串*/
void YUYY_HS12864G18B_DisplayString6x8(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_6x8+j),6,8);
column+=6;
}
i+=1;
}
}
void YUYY_HS12864G18B_DisplayFinish(YUYY_HS12864G18B_DEV_Type *hs12864_dev)
{
YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV1);
}
YUYY_HS12864G18B_DEV_Type lcd_dev;
void lcd_init()
{
GPIO_Config_T gpioConfigStruct;
RCM_EnableAHB1PeriphClock (RCM_AHB1_PERIPH_GPIOA);
GPIO_ConfigStructInit(&gpioConfigStruct);
gpioConfigStruct.mode = GPIO_MODE_OUT;
gpioConfigStruct.speed = GPIO_SPEED_100MHz;
gpioConfigStruct.pin = GPIO_PIN_4 | GPIO_PIN_6 | GPIO_PIN_8;
gpioConfigStruct.otype = GPIO_OTYPE_PP;
gpioConfigStruct.pupd = GPIO_PUPD_NOPULL;
GPIO_Config(GPIOA, &gpioConfigStruct);
lcd_dev.cs.gpio = GPIOA;
lcd_dev.cs.pin = GPIO_PIN_4;
lcd_dev.rst.gpio = GPIOA;
lcd_dev.rst.pin = GPIO_PIN_6;
lcd_dev.a0.gpio = GPIOA;
lcd_dev.a0.pin = GPIO_PIN_8;
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," APM32F411 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);
}
接下来用RTC实现时间显示功能，初始化RTC，使用外部低速晶振作为时钟源
void rtc_init()
{
RTC_Config_T Struct;
RTC_TimeConfig_T timeConfig;
RTC_DateConfig_T dateConfig;
RCM_EnableAPB1PeriphClock(RCM_APB1_PERIPH_PMU);
PMU_EnableBackupAccess();
RCM_ConfigLSE(RCM_LSE_OPEN);
while(RCM_ReadStatusFlag(RCM_FLAG_LSERDY) == RESET)
{
}
RCM_ConfigRTCCLK(RCM_RTCCLK_LSE);
RCM_EnableRTCCLK();
RTC_WaitForSynchro();
RTC_ConfigStructInit(&Struct);
Struct.format = RTC_HOURFORMAT_24;
RTC_Config(&Struct);
RTC_DisableWriteProtection();
timeConfig.hours = 8;
timeConfig.minutes = 20;
timeConfig.seconds = 30;
RTC_ConfigTime(RTC_FORMAT_BIN,&timeConfig);
dateConfig.year = 24;
dateConfig.month = RTC_MONTH_MAY;
dateConfig.date = 12;
dateConfig.weekday = RTC_WEEKDAY_SUNDAY;
RTC_ConfigDate(RTC_FORMAT_BIN,&dateConfig);
RTC_EnableWriteProtection();
}
char *WeekdayStr[7]= {"SUN","MON","TUE","WED","THU","FRI","SAT"};
uint8_t ertc_int_flag = 0;
void showrtc()
{
RTC_TimeConfig_T time;
RTC_DateConfig_T date;
char out[20];
RTC_ReadDate(RTC_FORMAT_BIN,&date);
sprintf(out," 20%02d-%02d-%02d %s ",date.year, date.month, date.date,WeekdayStr[date.weekday%7]);
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,0,0,out);
RTC_ReadTime(RTC_FORMAT_BIN,&time);
sprintf(out," %02d:%02d:%02d ",time.hours, time.minutes, time.seconds);
YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,2,0,out);
}
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