技能梳理18@stm32+柔性墨水屏+薄膜按键+二维码
2024-05-09 01:09:57
薄膜压力按键控制mos开关，切换给柔性墨水屏vcc供电方式，单片机控制vcc切换图像，其中有可以扫描的二维码
1、项目简介
2、实现逻辑
#有两个薄膜按键，一个控制墨水屏供电方式（其实就是一个继电器），一个切换图像
3、应用场景
#墨水屏手表
#省电墨水屏广告牌
4、核心代码梳理
/* USER CODE BEGIN 0 */
void driver_delay_us(unsigned int xus)
{for(;xus>1;xus--);
}void driver_delay_xms(unsigned long xms)
{ unsigned long i = 0 , j=0;for(j=0;j<xms;j++){for(i=0; i<256; i++);}
}
/* USER CODE END 0 *//*** @brief The application entry point.* @retval int*/
int main(void)
{/* USER CODE BEGIN 1 */
uint8_t red_a, red_b, yel_a, yel_b;/* USER CODE END 1 *//* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();/* USER CODE BEGIN 2 */HAL_GPIO_WritePin(GPIOB, LOW_GND_Pin, GPIO_PIN_RESET);EPD_display_init(); //EPD init
// full_display(pic_display1); //pic1
// driver_delay_xms(50000);
// full_display(pic_display2); //pic2
// driver_delay_xms(50000);EPD_W21_WriteCMD(0X50);EPD_W21_WriteDATA(0xf7);
// partial_display(0,32,0,64, partial00, partial01); //partial display 0 1
// driver_delay_xms(10000);/******screen clear*****/EPD_display_init(); //EPD initfull_display(pic_display_white); //pic_whitedriver_delay_xms(2000);/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */HAL_Delay(20);if(!HAL_GPIO_ReadPin(GPIOA, RED_BUT_Pin))red_a++;else red_a = 0;if(!HAL_GPIO_ReadPin(GPIOA, YEL_BUT_Pin))yel_a++;else yel_a = 0;if(red_a==5)red_b++;if(yel_a==5){yel_b++;if(yel_b%3 == 1)full_display(pic_display1); //pic1else if(yel_b%3 == 2)full_display(pic_display2); //pic2else if(yel_b%3 == 0)full_display(pic_display3); //pic3HAL_Delay(500);}if(red_b%2){HAL_GPIO_WritePin(MOS_CTR_GPIO_Port, MOS_CTR_Pin, GPIO_PIN_RESET);HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_SET);}else {HAL_GPIO_WritePin(MOS_CTR_GPIO_Port, MOS_CTR_Pin, GPIO_PIN_SET);HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);}// HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
// full_display(pic_display1); //pic1
// HAL_Delay(4000);
// full_display(pic_display2); //pic2
// deep_sleep(); //Enter deep sleep modes}/* USER CODE END 3 */
}///extern function//***************** full screen display picture*************************/
void pic_display_white(void)
{unsigned int i;EPD_W21_WriteCMD(0x10);for(i=0;i<4736;i++) {EPD_W21_WriteDATA(0x00); } driver_delay_xms(2);EPD_W21_WriteCMD(0x13);for(i=0;i<4736;i++) {EPD_W21_WriteDATA(0xff); } driver_delay_xms(2);
}
void pic_display1(void)
{unsigned int i;EPD_W21_WriteCMD(0x10);for(i=0;i<4736;i++) {EPD_W21_WriteDATA(0x00); } driver_delay_xms(2);EPD_W21_WriteCMD(0x13);for(i=0;i<4736;i++) {EPD_W21_WriteDATA(gImage_1[i]); } driver_delay_xms(2);
}void pic_display2(void)
{unsigned int i;EPD_W21_WriteCMD(0x10);for(i=0;i<4736;i++) {EPD_W21_WriteDATA(0x00); } EPD_W21_WriteCMD(0x13); for(i=0;i<4736;i++) {EPD_W21_WriteDATA(gImage_2[i]); }
}void pic_display3(void)
{unsigned int i;EPD_W21_WriteCMD(0x10);for(i=0;i<4736;i++) {EPD_W21_WriteDATA(0x00); } EPD_W21_WriteCMD(0x13); for(i=0;i<4736;i++) {EPD_W21_WriteDATA(gImage_3[i]); }
}/***************** partial full screen display picture*************************/
void partial_full00(void)
{unsigned int i;for(i=0;i<4736;i++) {EPD_W21_WriteDATA(0x00); }
}
void partial_full01(void)
{unsigned int i;for(i=0;i<4736;i++) {EPD_W21_WriteDATA(~gImage_1[i]); }
}
void partial_full02(void)
{unsigned int i;for(i=0;i<4736;i++) {EPD_W21_WriteDATA(~gImage_2[i]); }
}
void partial_full03(void)
{unsigned int i;for(i=0;i<4736;i++) {EPD_W21_WriteDATA(~gImage_3[i]); }
}/***************** partial display 0~9 picture*************************/
void partial00(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA(0x00); }
}void partial01(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num1[i]);driver_delay_xms(2); } }
void partial02(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num2[i]);driver_delay_xms(2); } }
void partial03(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num3[i]);driver_delay_xms(2); } }
void partial04(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num4[i]);driver_delay_xms(2); } }
void partial05(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num5[i]);driver_delay_xms(2); } }
void partial06(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num6[i]);driver_delay_xms(2); } }
void partial07(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num7[i]);driver_delay_xms(2); } }
void partial08(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num8[i]);driver_delay_xms(2); } }
void partial09(void)
{unsigned int i;for(i=0;i<256;i++) {EPD_W21_WriteDATA (~gImage_num9[i]);driver_delay_xms(2); } }
/*************************EPD display init function******************************************************/
void EPD_display_init(void)
{HRES=0x80; //128VRES_byte1=0x01; //296VRES_byte2=0x28;EPD_W21_Init();EPD_W21_WriteCMD(0x01); //POWER SETTING EPD_W21_WriteDATA (0x03); EPD_W21_WriteDATA (0x00);EPD_W21_WriteDATA (0x2b);EPD_W21_WriteDATA (0x2b);EPD_W21_WriteDATA (0x03);EPD_W21_WriteCMD(0x06); //boost soft startEPD_W21_WriteDATA (0x17); //AEPD_W21_WriteDATA (0x17); //BEPD_W21_WriteDATA (0x17); //C EPD_W21_WriteCMD(0x04); lcd_chkstatus();EPD_W21_WriteCMD(0x00); //panel settingEPD_W21_WriteDATA(0xbf); //LUT from OTP，128x296EPD_W21_WriteDATA(0x0d); //VCOM to 0V fastEPD_W21_WriteCMD(0x30); //PLL settingEPD_W21_WriteDATA (0x3a); // 3a 100HZ 29 150Hz 39 200HZ 31 171HZEPD_W21_WriteCMD(0x61); //resolution settingEPD_W21_WriteDATA (HRES); EPD_W21_WriteDATA (VRES_byte1); EPD_W21_WriteDATA (VRES_byte2);EPD_W21_WriteCMD(0x82); //vcom_DC setting EPD_W21_WriteDATA (0x28); EPD_W21_WriteCMD(0X50); //VCOM AND DATA INTERVAL SETTING EPD_W21_WriteDATA(0x97); //WBmode:VBDF 17|D7 VBDW 97 VBDB 57 WBRmode:VBDF F7 VBDW 77 VBDB 37 VBDR B7}
/***************************full display function*************************************/
void full_display(void pic_display(void))
{pic_display(); //picturelut(); //Power settingsEPD_W21_WriteCMD(0x12); //DISPLAY REFRESH driver_delay_xms(100); //!!!The delay here is necessary, 200uS at least!!! lcd_chkstatus();
}/***************************partial display function*************************************/void partial_display(uint16_t x_start,uint16_t x_end,uint16_t y_start,uint16_t y_end ,void partial_old(void),void partial_new(void)) //partial display
{EPD_W21_WriteCMD(0x82); //vcom_DC setting EPD_W21_WriteDATA (0x08); EPD_W21_WriteCMD(0X50);EPD_W21_WriteDATA(0x47); lut1();EPD_W21_WriteCMD(0x91); //This command makes the display enter partial modeEPD_W21_WriteCMD(0x90); //resolution settingEPD_W21_WriteDATA (x_start); //x-start EPD_W21_WriteDATA (x_end-1); //x-end EPD_W21_WriteDATA (y_start/256);EPD_W21_WriteDATA (y_start%256); //y-start EPD_W21_WriteDATA (y_end/256); EPD_W21_WriteDATA (y_end%256-1); //y-endEPD_W21_WriteDATA (0x28); EPD_W21_WriteCMD(0x10); //writes Old data to SRAM for programmingpartial_old();EPD_W21_WriteCMD(0x13); //writes New data to SRAM.partial_new();EPD_W21_WriteCMD(0x12); //DISPLAY REFRESH driver_delay_xms(10); //!!!The delay here is necessary, 200uS at least!!! lcd_chkstatus();}
/Enter deep sleep mode
void deep_sleep(void) //Enter deep sleep mode
{EPD_W21_WriteCMD(0X50);EPD_W21_WriteDATA(0xf7); EPD_W21_WriteCMD(0X02); //power offEPD_W21_WriteCMD(0X07); //deep sleepEPD_W21_WriteDATA(0xA5);
}//LUT download
void lut(void)
{unsigned int count;EPD_W21_WriteCMD(0x20);for(count=0;count<44;count++) {EPD_W21_WriteDATA(lut_vcomDC[count]);}EPD_W21_WriteCMD(0x21);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_ww[count]);} EPD_W21_WriteCMD(0x22);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_bw[count]);} EPD_W21_WriteCMD(0x23);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_wb[count]);} EPD_W21_WriteCMD(0x24);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_bb[count]);}
}void lut1(void)
{unsigned int count;EPD_W21_WriteCMD(0x20);for(count=0;count<44;count++) {EPD_W21_WriteDATA(lut_vcom1[count]);}EPD_W21_WriteCMD(0x21);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_ww1[count]);} EPD_W21_WriteCMD(0x22);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_bw1[count]);} EPD_W21_WriteCMD(0x23);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_wb1[count]);} EPD_W21_WriteCMD(0x24);for(count=0;count<42;count++) {EPD_W21_WriteDATA(lut_bb1[count]);}
}//Detection busy
void lcd_chkstatus(void)
{unsigned char busy;do{EPD_W21_WriteCMD(0x71);busy = isEPD_W21_BUSY;busy =!(busy & 0x01); }while(busy); driver_delay_xms(200);
}void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{static uint8_t red, yel;driver_delay_xms(200);}5、部分参考资料
6、注意事项
#墨水屏是3V供电，相关的接线逻辑见资料包
#需要使用工具将图片转换为源文件格式放到stm32的源代码中
#墨水屏驱动一般厂商会给
#墨水屏小了，二维码会识别不到
#柔性墨水屏尽量向外折，向里面折也会有黑线
完整可运行项目地址
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