- 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);
- }
LCD驱动代码
- 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);
- }
LCD初始化
- 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);
- }
运行效果
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();
- }
实现LCD显示RTC时间
- 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);
- }
运行效果