本帖最后由 sujingliang 于 2024-7-1 19:08 编辑
前言
在前一篇评测里实现向spi flash写入中文字库bin的的功能，详见https://bbs.21ic.com/icview-3385598-1-1.html
接上文继续实现ST7735 SPI屏驱动和显示中文，并通过KEY控制中文文本翻页浏览。
功能框图
1、通过SPI2 驱动ST7735。
2、通过K2(PC5)、K4(PB2)控制查看文本向前翻页和向后翻页。
驱动ST7735
st7735.c
#define _ST7735_C_
#include "platform.h"
#include "st7735.h"
#include "charcode.h"
#define LCD_CS_SET() SPI_CSInternalSelected(SPI2, DISABLE)
#define LCD_CS_RESET() SPI_CSInternalSelected(SPI2, ENABLE)
#define LCD_DC GPIOB,GPIO_Pin_10 //
#define LCD_RST GPIOB,GPIO_Pin_11 //
#define LCD_LED GPIOB,GPIO_Pin_1 //
#define LCD_DC_SET() GPIO_WriteBit(LCD_DC, Bit_SET);
#define LCD_DC_RESET() GPIO_WriteBit(LCD_DC, Bit_RESET);
#define LCD_RST_SET() GPIO_WriteBit(LCD_RST, Bit_SET);
#define LCD_RST_RESET() GPIO_WriteBit(LCD_RST, Bit_RESET);
#define LCD_LED_SET() GPIO_WriteBit(LCD_LED, Bit_SET);
#define LCD_LED_RESET() GPIO_WriteBit(LCD_LED, Bit_RESET);
extern void SPI_FLASH_FastRead(uint32_t Address, uint8_t *Buffer, uint32_t Length);
uint8_t MatrixBuff[32];
void getMatrix(const uint16_t nmCode)
{
uint8_t i;
uint32_t offset;
uint8_t GBH,GBL;
uint16_t nm=nmCode;
GBH=nm>>8&0xff;
GBL=nm&0xff;
if(GBH>=0xb0)
{
offset=((GBH-0xa7)*94+GBL-0xa1)*32;
}else
{
offset=((GBH-0xa1)*94+GBL-0xa1)*32;
}
SPI_FLASH_FastRead(offset,MatrixBuff,32);
}
typedef struct {
uint8_t cmd;
uint8_t dat[16];
uint16_t datLen;
uint32_t sleep;
} st7735_ini_str_t;
st7735_ini_str_t lcd_ini_str[] = {
{0x11, {0x00}, 0, 120}, /* software reset */
{0xB1, {0x02, 0x35, 0x36}, 3, 0},
{0xB2, {0x02,0x35,0x36}, 3 ,0}, //Frame rate 80Hz
{0xB3, {0x02,0x35,0x36,0x02,0x35,0x36}, 6 ,0},
{0xB4, {0x03}, 1, 0 },
{0xC0, {0xA2,0x02,0x84}, 3 ,0},
{0xC1, {0xC5}, 1 ,0},
{0xC2, {0x0D,0x00}, 2,0},
{0xC3, {0x8D,0x2A}, 2,0},
{0xC4, {0x8D,0xEE}, 2,0},
{0xC5, {0x0A}, 1,0},
{0xC7, {0x00},1,0},
{0x36, {0xC8}, 1,0},
{0xE0, {0x12,0x1C,0x10,0x18,0x33,0x2C,0x25,0x28,0x28,0x27,0x2F,0x3c,0x00,0x03,0x03,0x10}, 16,0},
{0xE1, {0x12,0x1C,0x10,0x18,0x2D,0x28,0x23,0x28,0x28,0x26,0x2F,0x3B,0x00,0x03,0x03,0x10}, 16,0},
{0x3A, {0x05}, 1, 0}, //65k mode
{0x29, {0x00}, 0, 0}, //Display on
{0x00, {0x00}, 0, 0} /* EOL */
};
void LCD_SPI_Configure(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
SPI_InitTypeDef SPI_InitStruct;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
SPI_StructInit(&SPI_InitStruct);
SPI_InitStruct.SPI_Mode = SPI_Mode_Master;
SPI_InitStruct.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStruct.SPI_DataWidth = 8;
SPI_InitStruct.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStruct.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStruct.SPI_NSS = SPI_NSS_Soft;
SPI_InitStruct.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
SPI_InitStruct.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_Init(SPI2, &SPI_InitStruct);
SPI_BiDirectionalLineConfig(SPI2, SPI_Direction_Rx);
SPI_BiDirectionalLineConfig(SPI2, SPI_Direction_Tx);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_5); //SPI2_NSS PB12
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_5); //SPI2_SCK PB13
GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_5); //SPI2_MISO PB14
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_5); //SPI2_MOSI PB15
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_15;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_High;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_14;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB, &GPIO_InitStruct);
SPI_Cmd(SPI2, ENABLE);
//初始化LCD_DC、LCD_RST、LCD_LED
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_10|GPIO_Pin_11;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_High;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/***********************************************************************************************************************
* @brief
* [url=home.php?mod=space&uid=536309]@NOTE[/url] none
* @param none
* @retval none
*********************************************************************************************************************/
void LCD_SPI_TxData_Polling(uint8_t *Buffer, uint8_t Length)
{
uint8_t i = 0, Data = 0;
for (i = 0; i < Length; i++)
{
//SPI_SendData(SPI2, Buffer[i]);
SPI_SendByte(SPI2, Buffer[i]);
while (RESET == SPI_GetFlagStatus(SPI2, SPI_FLAG_TXEPT))
{
}
while (RESET == SPI_GetFlagStatus(SPI2, SPI_FLAG_RXAVL))
{
}
Data = SPI_ReceiveData(SPI2);
}
}
/*写指令*/
void LCD_WriteIndex(uint8_t index)
{
LCD_CS_RESET();
LCD_DC_RESET();
LCD_SPI_TxData_Polling(&index,1);
LCD_CS_SET();
}
/*写数据*/
void LCD_WriteData(uint8_t *Buffer, uint8_t Length)
{
LCD_CS_RESET();
LCD_DC_SET();
LCD_SPI_TxData_Polling(Buffer,Length);
LCD_CS_SET();
}
void ST7735_SendData(uint8_t cmd, uint8_t *data, uint16_t length)
{
LCD_WriteIndex(cmd);
LCD_WriteData(data,length);
}
void ST7735_HardReset()
{
LCD_RST_SET();
PLATFORM_DelayMS(100);
LCD_RST_RESET();
PLATFORM_DelayMS(100);
LCD_RST_SET();
PLATFORM_DelayMS(100);
}
/*发送初始化字符串*/
void ST7735_SendInitStr()
{
LCD_CS_RESET();
uint16_t i = 0;
while(lcd_ini_str[i].cmd != 0x00)
{
uint8_t cmd = lcd_ini_str[i].cmd;
uint16_t datLen = lcd_ini_str[i].datLen;
uint8_t *dat;
dat = &(lcd_ini_str[i].dat[0]);
uint32_t slp = lcd_ini_str[i].sleep;
LCD_DC_RESET();
LCD_SPI_TxData_Polling(&cmd, 1);
if(datLen > 0)
{
LCD_DC_SET();
LCD_SPI_TxData_Polling(dat, datLen);
}
if(slp > 0)
{
PLATFORM_DelayMS(slp);
}
i++;
}
LCD_CS_SET();
}
void ST7735_SetWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
{
/* CASET */
uint8_t cmd = 0x2A;
x=x+2;
y=y+2;
uint8_t buf4[4];
buf4[0] = (x >> 8) & 0xFF;
buf4[1] = x & 0xFF;
buf4[2] = ((x + w -1) >> 8) & 0xFF;
buf4[3] = (x + w -1) & 0xFF;
ST7735_SendData(cmd, buf4, 4);
/* RASET */
cmd = 0x2B;
buf4[0] = (y >> 8) & 0xFF;
buf4[1] = y & 0xFF;
buf4[2] = ((y + h - 1) >> 8) & 0xFF;
buf4[3] = (y + h - 1) & 0xFF;
ST7735_SendData(cmd, buf4, 4);
LCD_WriteIndex(0x2C);
}
void Lcd_SetXY(unsigned int x,unsigned int y)
{
ST7735_SetWindow(x,y,x,y);
}
void setPixel(uint16_t Color)
{
uint8_t color_h,color_l;
color_h=Color>>8;
color_l=Color&0xff;
LCD_CS_RESET();
LCD_DC_SET();
LCD_SPI_TxData_Polling(&color_h,1);
LCD_SPI_TxData_Polling(&color_l,1);
LCD_CS_SET();
}
void LCD_DrawPoint(uint16_t x,uint16_t y,uint16_t Data)
{
ST7735_SetWindow(x,y,x+1,y+1);
//LCD_WriteData((uint8_t*)&Data, 2);
setPixel(Data);
}
//画线函数，使用Bresenham 画线算法
void Gui_DrawLine(unsigned int x0, unsigned int y0,unsigned int x1, unsigned int y1,unsigned int Color)
{
int dx, // difference in x's
dy, // difference in y's
dx2, // dx,dy * 2
dy2,
x_inc, // amount in pixel space to move during drawing
y_inc, // amount in pixel space to move during drawing
error, // the discriminant i.e. error i.e. decision variable
index; // used for looping
Lcd_SetXY(x0,y0);
dx = x1-x0;//计算x距离
dy = y1-y0;//计算y距离
if (dx>=0)
{
x_inc = 1;
}
else
{
x_inc = -1;
dx = -dx;
}
if (dy>=0)
{
y_inc = 1;
}
else
{
y_inc = -1;
dy = -dy;
}
dx2 = dx << 1;
dy2 = dy << 1;
if (dx > dy)//x距离大于y距离，那么每个x轴上只有一个点，每个y轴上有若干个点
{//且线的点数等于x距离，以x轴递增画点
// initialize error term
error = dy2 - dx;
// draw the line
for (index=0; index <= dx; index++)//要画的点数不会超过x距离
{
//画点
LCD_DrawPoint(x0,y0,Color);
// test if error has overflowed
if (error >= 0) //是否需要增加y坐标值
{
error-=dx2;
// move to next line
y0+=y_inc;//增加y坐标值
} // end if error overflowed
// adjust the error term
error+=dy2;
// move to the next pixel
x0+=x_inc;//x坐标值每次画点后都递增1
} // end for
} // end if |slope| <= 1
else//y轴大于x轴，则每个y轴上只有一个点，x轴若干个点
{//以y轴为递增画点
// initialize error term
error = dx2 - dy;
// draw the line
for (index=0; index <= dy; index++)
{
// set the pixel
LCD_DrawPoint(x0,y0,Color);
// test if error overflowed
if (error >= 0)
{
error-=dy2;
// move to next line
x0+=x_inc;
} // end if error overflowed
// adjust the error term
error+=dx2;
// move to the next pixel
y0+=y_inc;
} // end for
} // end else |slope| > 1
}
void Gui_DrawRect(uint16_t x, uint16_t y, uint16_t w, uint16_t h,uint16_t bc)
{
uint16_t i,j;
ST7735_SetWindow(x, y, w, h);
for(i=0;i<w;i++)
{
for(j=0;j<h;j++)
{
setPixel(bc);
}
}
}
void GUI_Clear(uint16_t Color) //清屏
{
uint16_t i,j;
ST7735_SetWindow(0, 0, X_MAX_PIXEL, Y_MAX_PIXEL);
for(i=0;i<Y_MAX_PIXEL;i++)
{
for(j=0;j<X_MAX_PIXEL;j++)
{
setPixel(Color);
}
}
}
void GUI_WriteASCII8x16(uint16_t x, uint16_t y, uint8_t *p, uint16_t wordColor, uint16_t backColor)
{
unsigned char j, wordByte,wordNum;
uint16_t mx,my;
uint8_t color;
mx=x;
my=y;
while(*p != '\0')
{
if(mx>127){
mx=x;
my+=16;
}
wordNum = *p - 32;
ST7735_SetWindow(mx,my,8, 16);
for (wordByte=0; wordByte<16; wordByte++)
{
color = Font_Data[wordNum].dat[wordByte];
for (j=0; j<8; j++)
{
if ((color&0x80) == 0x80)
{
setPixel(wordColor);
}
else
{
setPixel(backColor);
}
color <<= 1;
}
}
p++;
mx +=8;
}
}
void GUI_WriteCN16x16(uint16_t x, uint16_t y,const uint8_t *cn, uint16_t wordColor, uint16_t backColor)
{
uint16_t i, j, mx,my,wordByte;
uint16_t zm;
uint16_t color;
uint8_t wordNum;
mx=x;
my=y;
while (*cn != '\0')
{
if(mx>119){
mx=x;
my+=16;
}
if(*cn<128){
wordNum = *cn - 32;
ST7735_SetWindow(mx,my,8, 16);
for (wordByte=0; wordByte<16; wordByte++)
{
color = Font_Data[wordNum].dat[wordByte];
for (j=0; j<8; j++)
{
if ((color&0x80) == 0x80)
{
setPixel(wordColor);
}
else
{
setPixel(backColor);
}
color <<= 1;
}
}
cn++;
mx +=8;
}
else
{
ST7735_SetWindow(mx, my, 16, 16);
zm=*cn;
zm<<=8;
zm|=*(cn+1);
getMatrix(zm);
for(i=0; i<32; i++)
{ //MSK的位数
color=MatrixBuff[i];
for(j=0;j<8;j++)
{
if((color&0x80)==0x80)
{
setPixel(wordColor);
}
else
{
setPixel(backColor);
}
color<<=1;
}//for(j=0;j<8;j++)结束
}
cn += 2;
mx += 16;
}
}
}
void ST7735_Init(void)
{
LCD_LED_SET();
LCD_SPI_Configure();
ST7735_HardReset();
ST7735_SendInitStr();
}
其中，读取字库函数getMatrix，
1、之前将字库写到了外部flash的地址0
2、字库的偏移量计算：因为字库本身去掉了一些不常用的字，所有需要跳过部分地址对GBH>=0xb0进行特殊判断。
void getMatrix(const uint16_t nmCode)
{
uint8_t i;
uint32_t offset;
uint8_t GBH,GBL;
uint16_t nm=nmCode;
GBH=nm>>8&0xff;
GBL=nm&0xff;
if(GBH>=0xb0)
{
offset=((GBH-0xa7)*94+GBL-0xa1)*32;
}else
{
offset=((GBH-0xa1)*94+GBL-0xa1)*32;
}
SPI_FLASH_FastRead(offset,MatrixBuff,32);
}
控制文本显示
gui_text.c
1、article是要显示文本全文。
2、textBuff是一屏可以显示的文本。
#define _GUI_TEXT_C_
#include <stdio.h>
#include <string.h>
#include "st7735.h"
#include "gui_text.h"
#define HZNUM 64
#define TEXTSIZE HZNUM*2
uint8_t textBuff[TEXTSIZE];
const uint8_t article[]="天尊地卑，乾坤定矣。卑高以陈，贵贱位矣。动静有常，刚柔断矣。方以类聚，物以群分，吉凶生矣。在天成象，在地成形，变化见矣。乾知大始，坤作成物。乾以易知，坤以简能。易则易知，简则易从。易知则有亲，易从则有功。有亲则可久，有功则可大。可久则贤人之德，可大则贤人之业。易简，而天下矣之理矣；天下之理得，而成位乎其中矣。第二章圣人设卦观象，系辞焉而明吉凶，刚柔相推而生变化。是故，君子所居而安者，易之序也。所乐而玩者，爻之辞也。是故，君子居则观其象，而玩其辞；动则观其变，而玩其占。是故自**之，吉无不利。第三章彖者，言乎象也。爻者，言乎变者也。吉凶者，言乎其失得也。悔吝者，言乎其疵也。无咎者，善补过也。是故，列贵贱者，存乎位。齐大者，存乎卦。辩吉凶者，存乎辞。忧悔吝者，存乎介。震无咎者，存乎悔。是故，卦有大，辞有险易。辞也者，也各指其所之。第四章易与天地准，故能弥纶天地之道。仰以观於天文，俯以察於地理，是故知幽明之故。原始反终，故知死生之。精气为物，游魂为变，是故知鬼神之情状。与天地相似，故不违。知周乎万物，而道济天下，故不过。旁行而不流，乐天知命，故不忧。安土敦乎仁，故能爱。范围天地之化而不过，曲成万物而不遗，通乎昼夜之道而知，故神无方而易无体。";
uint16_t curPage=0;
uint16_t maxPage=sizeof(article)/TEXTSIZE+1;
void gui_DrawScroll(uint8_t pos)
{
Gui_DrawRect(GUI_TEXT_WIDTH+10,0,2,GUI_TEXT_HEIGHT,COLOR_Blue);
Gui_DrawRect(GUI_TEXT_WIDTH+5,pos,10,pos+20,COLOR_Blue);
}
void gui_DrawWindow(void)
{
Gui_DrawRect(0,0,GUI_TEXT_WIDTH,GUI_TEXT_HEIGHT,COLOR_DarkGreen);
gui_DrawScroll(10);
}
void gui_SetPage(uint16_t page)
{
strncpy((char*)textBuff,(char*)(article+page*TEXTSIZE),TEXTSIZE);
}
void gui_DrawWindowText(void)
{
gui_SetPage(curPage);
GUI_WriteCN16x16(0,0,textBuff,COLOR_Yellow,COLOR_Black);
}
void gui_textDemo(void)
{
GUI_Clear(COLOR_Black);
gui_DrawWindowText();
}
KEY控制
exit_interrupt.c
void EXTI_Configure(void)
{
EXTI_InitTypeDef EXTI_InitStruct;
GPIO_InitTypeDef GPIO_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* K1->PC4->EXTI_Line4 */
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOC, &GPIO_InitStruct);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource4);
EXTI_StructInit(&EXTI_InitStruct);
EXTI_InitStruct.EXTI_Line = EXTI_Line4;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStruct);
/* K2->PC5->EXTI_Line5 */
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOC, &GPIO_InitStruct);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource5);
EXTI_StructInit(&EXTI_InitStruct);
EXTI_InitStruct.EXTI_Line = EXTI_Line5;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStruct);
/* K3->PB1->EXTI_Line1 */
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB, &GPIO_InitStruct);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource1);
EXTI_StructInit(&EXTI_InitStruct);
EXTI_InitStruct.EXTI_Line = EXTI_Line1;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStruct);
/* K4->PB2->EXTI_Line2 */
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB, &GPIO_InitStruct);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource2);
EXTI_StructInit(&EXTI_InitStruct);
EXTI_InitStruct.EXTI_Line = EXTI_Line2;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStruct);
/* EXTI Interrupt */
NVIC_InitStruct.NVIC_IRQChannel = EXTI1_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
NVIC_InitStruct.NVIC_IRQChannel = EXTI2_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
NVIC_InitStruct.NVIC_IRQChannel = EXTI4_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
NVIC_InitStruct.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
}
中断方式实现KEY翻页
void EXTI2_IRQHandler(void)
{
/* K4 */
if (SET == EXTI_GetITStatus(EXTI_Line2))
{
PLATFORM_LED_Toggle(LED4);
if(curPage<maxPage) {
curPage++;
gui_DrawWindowText();
}
EXTI_ClearITPendingBit(EXTI_Line2);
}
}
void EXTI9_5_IRQHandler(void)
{
/* K2 */
if (SET == EXTI_GetITStatus(EXTI_Line5))
{
PLATFORM_LED_Toggle(LED2);
if(curPage>0) {
curPage--;
gui_DrawWindowText();
}
EXTI_ClearITPendingBit(EXTI_Line5);
}
}
源码：
mini-f53330_USART_Polling.rar
(187.81 KB)
|
此文章已获得独家原创/原创奖标签，著作权归21ic所有，未经允许禁止转载。
|
楼主
标题置顶
标题高亮
