3.5" inch TFT LCD Display Module 480X320 driven with FSMC.

TFT LCD Display Module 480X320 driven with FSMC

I have recently bought a 3.5" inch TFT LCD Touch Screen Display Module 480X320 with a www.mcufriend.com label on the back side. The display was equipped with an 8bit parallel interface. First I decided to test it with the UniGraphic library using the BUS_8 protocol. The display was very slow but improved when I switched to the PAR_8 protocol. Because I heard about the possibility to use a Flexible Static Memory Controller (FSMC), built into some STM MCU's, to drive LCD's (read/write to LCD's memory rather than to an external SRAM) I thought it would be a fun to try it out.

https://os.mbed.com/media/uploads/hudakz/lcd_3.5_tft_480x320_mcufriend_front.png

Below is the brief story of what I did:

  • Selected FSMC in the Connectivity category and configured it as below: https://os.mbed.com/media/uploads/hudakz/arch_max_fsmc_conf.png
  • Let the STM32CubeIDE generate the code (files).
  • Created a new program for the Seeed Arch Max target in the Mbed Online Compiler by selecting a mbed os blinky template.
  • Replaced the main.cpp with the main.c content of the STM32CubeIDE project.
  • Copy & Pasted the other files with codes from the STM32CubeIDE project to the online compiler project.
  • Renamed and modified:
    "stm32f4xx_it.h" to "stm32f4xx_it_msp.h"
    "stm32f4xx_it.c" to "stm32f4xx_it_msp.c"
  • Added the UniGraphic library to the online compiler project.
  • Extended the UniGraphic library with a FSMC_8 protocol and replaced the TFT::set_orientation(int orient) function with the one used by mcufriend for arduino.
  • Modified the main.cpp as needed.
https://os.mbed.com/media/uploads/hudakz/stm32f407vet6_st-link03.pnghttps://os.mbed.com/media/uploads/hudakz/lcd_3.5_tft_480x320_mcufriend_back.png


Wiring

STM32F407VETFT LCD module
+3.3V3V3
GNDGND
PB_12LCD_RST
GNDLCD_CS
PD_13 (RS)LCD_RS
PD_5 (WR)LCD_WR
PD_4 (RD)LCD_RD
PD_14 (DB00)LCD_D0
PD_15 (DB01)LCD_D1
PD_0 (DB02)LCD_D2
PD_1 (DB03)LCD_D3
PE_7 (DB04)LCD_D4
PE_8 (DB05)LCD_D5
PE_9 (DB06)LCD_D6
PE_10 (DB07)LCD_D7



Results
Execution times
Used protocolBUS_8FSMC_8
Operation \ Timemsms
Clear2283.98038.454
Plot192.06611.365
8bit BMP63.80541.338
Large Font163.8727.895
Sparce pixels2072.265/1458.05174.107/52.168
16bit BMP2288.58959.904
Revision:
1:47c996032a9e
Parent:
0:fa952828e34c
--- a/main.cpp	Sun May 10 10:44:31 2020 +0000
+++ b/main.cpp	Fri Sep 25 14:52:27 2020 +0000
@@ -30,7 +30,8 @@
 #include "string"
 #include "Arial12x12.h"
 #include "Arial24x23.h"
-#include "Terminal6x8.h"
+/* include "Terminal6x8.h" */
+
 #include "Arial43x48_digits.h"
 #include "pict.h"
 #include "pavement_48x34.h"
@@ -47,23 +48,27 @@
 Timer               tmr;
 int                 time1;
 int                 time2;
-unsigned short      backgroundColor = Black;
-unsigned short      foregroundColor = White;
-uint8_t             orient = 0;
+unsigned short      backgroundcolor = Black;
+unsigned short      foregroundcolor = White;
+char                orient = 0;
 
 /* USER CODE END PD */
 /* Private macro -------------------------------------------------------------*/
 /* USER CODE BEGIN PM */
 /* USER CODE END PM */
 /* Private variables ---------------------------------------------------------*/
+//I2S_HandleTypeDef hi2s3;
+//PCD_HandleTypeDef   hpcd_USB_OTG_FS;
 SRAM_HandleTypeDef  hsram1;
 
 /* USER CODE BEGIN PV */
 /* USER CODE END PV */
 /* Private function prototypes -----------------------------------------------*/
-//static void         SystemClock_Config(void);
+static void         SystemClock_Config(void);
 static void         MX_GPIO_Init(void);
 static void         MX_FSMC_Init(void);
+//static void         MX_I2S3_Init(void);
+//static void         MX_USB_OTG_FS_PCD_Init(void);
 /* USER CODE BEGIN PFP */
 /* USER CODE END PFP */
 /* Private user code ---------------------------------------------------------*/
@@ -71,9 +76,8 @@
 /* USER CODE BEGIN 0 */
 uint16_t RGB(uint16_t r, uint16_t g, uint16_t b)
 {
-    return(r << 16) | (g << 8) | b;
+    return(r * 65536) + (g * 256) + b;
 }
-
 /* USER CODE END 0 */
 
 /**
@@ -97,10 +101,13 @@
     /* Initialize all configured peripherals */
     MX_GPIO_Init();
     MX_FSMC_Init();
+
+    //    MX_I2S3_Init();
+    //    MX_USB_OTG_FS_PCD_Init();
     /* USER CODE BEGIN 2 */
+    //    PinName  dataPins[] = { PD_14, PD_15, PD_0, PD_1, PE_7, PE_8, PE_9, PE_10 };    // FSMC [D0:D7] -> LCD [D0:D7]
     // LCD_RST :    PB_12   -> LCD_RST
-    // FSMC_NE1:    not used
-    //              GND     -> LCD_CS
+    // FSMC_NE1:    PD_7    -> LCD_CS
     // FSMC_A18:    PD_13   -> LCD_RS
     // FSMC_NWE:    PD_5    -> LCD_WR
     // FSMC_NOE:    PD_4    -> LCD_RD
@@ -112,33 +119,39 @@
     // FSMC_D5 :    PE_8    -> LCD_D5
     // FSMC_D6 :    PE_9    -> LCD_D6
     // FSMC_D7 :    PE_10   -> LCD_D7
-    //TFT_MIPI myLCD(BUS_8, buspins, PD_7, PB_12, PD_13, PD_5, PD_4, "myLCD", 320, 480); // CS, reset, DC, WR, RD
+    //TFT_MIPI        myLCD(BUS_8, buspins, PD_7, PB_12, PD_13, PD_5, PD_4, "myLCD", 320, 480); // CS, reset, DC, WR, RD
     //                                      CS  , RST,   DC,    WR,   RD
-    myLCD = new TFT_MIPI(FSMC_8, PB_12, "myLCD", 320, 480); // Protocol, Pin->LCD_RST, name , LCDSIZE_X, LCDSIZE_Y
-    myLCD->set_orientation(1);
-    myLCD->background(backgroundColor);
-    myLCD->foreground(foregroundColor);
+    myLCD = new TFT_MIPI(FSMC_8, PB_12, "myLCD", 320, 480);                 // Protocol, Pin->LCD_RST, name , LCDSIZE_X = 320, LCDSIZE_Y = 480
+    myLCD->set_orientation(orient);
+    myLCD->background(backgroundcolor);                                     /* set background to black */
+    myLCD->foreground(foregroundcolor);                                     /* set chars to white */
     printf("\n\nSystem Core Clock = %.3f MHZ\r\n", (float)SystemCoreClock / 1000000);
+    tmr.start();
+
     printf("Target: %s\n", MBED_STRINGIFY(TARGET_NAME));
 
-    myLCD->cls();
-    myLCD->locate(0, 30);
-    myLCD->printf("Display ID: %.8X\r\n", myLCD->tftID);
-    printf("Display ID: %.8X\r\n", myLCD->tftID);
-
-    tmr.start();
     /* USER CODE END 2 */
     /* Infinite loop */
     /* USER CODE BEGIN WHILE */
     while (1) {
+
         myLCD->set_orientation((++orient) % 4);
+        //myLCD->set_orientation(1);
 
-        /* LCD memory write/read test */
+        /*
+      * myLCD->set_orientation(2);
+      */
+        myLCD->cls();                                                       /* clear the screen */
+        myLCD->locate(0, 30);
+        myLCD->printf("Display ID: %.8X\r\n", myLCD->tftID);
+        printf("Display ID: %.8X\r\n", myLCD->tftID);
+
+        /* mem write/read test */
         unsigned short  readback;
         unsigned short  colorstep = (0x10000 / myLCD->width());
 
         for (unsigned short i = 0; i < myLCD->width(); i++) {
-            myLCD->pixel(i, 0, i * colorstep);
+            myLCD->pixel(i, 0, i * colorstep);                              /* write line */
         }
 
         bool    readerror = false;
@@ -154,111 +167,115 @@
         }
 
         myLCD->locate(0, 10);
-        myLCD->printf("Pixelread test %s\r\n", readerror ? "FAILED" : "PASSED");
-        thread_sleep_for(2000);
+        myLCD->printf("pixelread test %s\r\n", readerror ? "FAIL" : "PASS");
 
-        /* Auto carriage return test */
+        ThisThread::sleep_for(2000);
         myLCD->cls();
+        //myLCD->set_font((unsigned char*)Arial12x12, 32, 127, false);        /* variable width disabled */
         myLCD->set_font((unsigned char*)Arial12x12);
         myLCD->locate(0, 0);
         myLCD->printf("Display Test\r\nSome text just to see if auto carriage return works correctly");
-        printf("  Display Test \r\n");
-        thread_sleep_for(2000);
+        printf("Display Test \r\n");
 
-        /* Clear screen test */
+        ThisThread::sleep_for(2000);
         tmr.reset();
         myLCD->cls();
         time1 = tmr.read_us();
-        myLCD->locate(2, 75);
+        myLCD->locate(2, 55);
         myLCD->printf("cls: %.3fms", (float)time1 / 1000);
         printf("cls: %.3fms\r\n", (float)time1 / 1000);
-        thread_sleep_for(2000);
 
+        ThisThread::sleep_for(2000);
         myLCD->cls();
         tmr.reset();
 
-        /* Simple graphics test */
+        //draw some graphics ;
         myLCD->set_font((unsigned char*)Arial24x23);
         myLCD->locate(10, 10);
         myLCD->printf("Test");
-        myLCD->line(0, 0, myLCD->width() - 1, 0, foregroundColor);
-        myLCD->line(0, 0, 0, myLCD->height() - 1, foregroundColor);
-        myLCD->line(0, 0, myLCD->width() - 1, myLCD->height() - 1, foregroundColor);
-        myLCD->rect(10, 30, 50, 40, foregroundColor);
-        myLCD->fillrect(60, 30, 100, 40, foregroundColor);
-        myLCD->circle(150, 32, 30, foregroundColor);
-        myLCD->fillcircle(140, 20, 10, foregroundColor);
+
+        myLCD->line(0, 0, myLCD->width() - 1, 0, foregroundcolor);
+        myLCD->line(0, 0, 0, myLCD->height() - 1, foregroundcolor);
+        myLCD->line(0, 0, myLCD->width() - 1, myLCD->height() - 1, foregroundcolor);
+
+        myLCD->rect(10, 30, 50, 40, foregroundcolor);
+        myLCD->fillrect(60, 30, 100, 40, foregroundcolor);
+
+        myLCD->circle(150, 32, 30, foregroundcolor);
+        myLCD->fillcircle(140, 20, 10, foregroundcolor);
 
         double  s;
 
         for (unsigned short i = 0; i < myLCD->width(); i++) {
             s = 10 * sin((long double)i / 10);
-            myLCD->pixel(i, 40 + (int)s, foregroundColor);
+            myLCD->pixel(i, 40 + (int)s, foregroundcolor);
         }
 
         time1 = tmr.read_us();
-        myLCD->locate(2, 75);
+        myLCD->locate(2, 55);
         myLCD->set_font((unsigned char*)Arial12x12);
         myLCD->printf("plot: %.3fms", (float)time1 / 1000);
         printf("plot: %.3fms\r\n", (float)time1 / 1000);
-        thread_sleep_for(2000);
+
+        ThisThread::sleep_for(2000);
+        myLCD->cls();
+        tmr.reset();
 
-        /* Bitmap test */
-        Bitmap_s    bmp =
-        {
-            64,     // XSize
-            64,     // YSize
-            8,      // Bytes in Line
-            burp    // Pointer to picture data
+        Bitmap_s    pic = { 64, // XSize
+            64, // YSize
+            8, // Bytes in Line
+            burp // Pointer to picture data
         };
 
-        tmr.reset();
-        myLCD->cls();
-        myLCD->Bitmap_BW(bmp, myLCD->width() - 64, 0);
+        myLCD->Bitmap_BW(pic, myLCD->width() - 64, 0);
         time1 = tmr.read_us();
-        myLCD->locate(2, 75);
+        myLCD->locate(2, 55);
         myLCD->printf("bmp: %.3fms", (float)time1 / 1000);
         printf("bmp: %.3fms\r\n", (float)time1 / 1000);
-        thread_sleep_for(2000);
 
-        /* Large font test */
+        ThisThread::sleep_for(2000);
         myLCD->cls();
-        myLCD->set_font((unsigned char*)Arial43x48_digits, 46, 58, false);    /* only digits, variable-width disabled */
+        myLCD->set_font((unsigned char*)Arial43x48_digits, 46, 58, false);    /* only numbers, variable-width disabled */
         tmr.reset();
+
         myLCD->locate(0, 0);
         myLCD->printf("%d", 12345);
         time1 = tmr.read_us();
-        myLCD->locate(2, 75);
+        myLCD->locate(2, 55);
         myLCD->set_font((unsigned char*)Arial12x12);
-        myLCD->printf("Large Font: %.3fms", (float)time1 / 1000);
-        printf("Large Font: %.3fms\r\n", (float)time1 / 1000);
-        thread_sleep_for(2000);
+        myLCD->printf("Big Font: %.3fms", (float)time1 / 1000);
+        printf("Big Font: %.3fms\r\n", (float)time1 / 1000);
 
-        /* Sparse pixels test */
+        ThisThread::sleep_for(2000);
+        /* sparse pixels test */
         myLCD->cls();
         myLCD->FastWindow(false);
         tmr.reset();
+
         for (unsigned int i = 0; i < 20000; i++) {
             myLCD->pixel((i + (i * 89)) % myLCD->width(), (i + (i * 61)) % myLCD->height(), White);
         }
+        myLCD->copy_to_lcd();
         time1 = tmr.read_us();
-        thread_sleep_for(2000);
 
+        ThisThread::sleep_for(2000);
         myLCD->cls();
         myLCD->FastWindow(true);
         tmr.reset();
+
         for (unsigned int i = 0; i < 20000; i++) {
             myLCD->pixel((i + (i * 89)) % myLCD->width(), (i + (i * 61)) % myLCD->height(), White);
         }
+        myLCD->copy_to_lcd();
         time2 = tmr.read_us();
 
         myLCD->cls();
-        myLCD->locate(2, 75);
+        myLCD->locate(2, 55);
         myLCD->printf("std:%.3fms fastw:%.3fms", (float)time1 / 1000, (float)time2 / 1000);
         printf("std: %.3fms fastw: %.3fms\r\n", (float)time1 / 1000, (float)time2 / 1000);
-        thread_sleep_for(2000);
 
-        /* Scroll test */
+        ThisThread::sleep_for(2000);
+        /* scroll test, only for TFT */
         myLCD->cls();
         myLCD->set_font((unsigned char*)Arial24x23);
         myLCD->locate(2, 10);
@@ -266,33 +283,33 @@
         myLCD->rect(0, 0, myLCD->width() - 1, myLCD->height() - 1, White);
         myLCD->rect(1, 1, myLCD->width() - 2, myLCD->height() - 2, Blue);
         myLCD->setscrollarea(0, myLCD->sizeY());
-        thread_sleep_for(1000);
+        ThisThread::sleep_for(1000);
         myLCD->scroll(1);                   /* up 1 */
-        thread_sleep_for(1000);
+        ThisThread::sleep_for(1000);
         myLCD->scroll(0);                   /* center */
-        thread_sleep_for(1000);
+        ThisThread::sleep_for(1000);
         myLCD->scroll(myLCD->sizeY() - 1);  /* down 1 */
-        thread_sleep_for(1000);
+        ThisThread::sleep_for(1000);
         myLCD->scroll(myLCD->sizeY());      /* same as 0, center */
-        thread_sleep_for(1000);
+        ThisThread::sleep_for(1000);
         myLCD->scroll(myLCD->sizeY() >> 1); /* half screen */
-        thread_sleep_for(1000);
+        ThisThread::sleep_for(1000);
         myLCD->scrollreset();               /* center */
-        thread_sleep_for(1000);
+        ThisThread::sleep_for(1000);
         for (unsigned short i = 1; i <= myLCD->sizeY(); i++) {
             myLCD->scroll(i);
-            thread_sleep_for(2);
+            ThisThread::sleep_for(2);
         }
-        thread_sleep_for(2000);
 
-        /* Color inversion */
+        ThisThread::sleep_for(2000);
+        /* color inversion */
         for (unsigned short i = 0; i <= 8; i++) {
             myLCD->invert(i & 1);
-            thread_sleep_for(200);
+            ThisThread::sleep_for(200);
         }
-        thread_sleep_for(2000);
 
-        /* 16bit bitmap test */
+        ThisThread::sleep_for(2000);
+        /* bmp 16bit test */
         myLCD->cls();
         tmr.reset();
         for (int y = 0; y < myLCD->height(); y += 34) {
@@ -300,14 +317,13 @@
                 myLCD->Bitmap(x, y, 48, 34, (unsigned char*)pavement_48x34);
         }
         time1 = tmr.read_us();
-        myLCD->locate(2, 75);
+        myLCD->locate(2, 55);
         myLCD->set_font((unsigned char*)Arial12x12);
-        myLCD->printf("16bit bitmap speed: %.3fms", (float)time1 / 1000);
-        printf("16bit bitmap speed: %.3fms\r\n", (float)time1 / 1000);
-        thread_sleep_for(2000);
+        myLCD->printf("Bmp speed: %.3fms", (float)time1 / 1000);
+        printf("Bmp speed: %.3fms\r\n", (float)time1 / 1000);
 
-        /* Drawing random lines */
-        for (int i = 0; i < 6000; i++) {
+        ThisThread::sleep_for(2000);
+        for (int i = 0; i < 3000; i++) {
             int    x1 = rand() % myLCD->width();
             int    y1 = rand() % myLCD->height();
 
@@ -321,7 +337,6 @@
             myLCD->line(x1, y1, x2, y2, RGB(r, g, b));
         }
 
-        /* Drawing text at random position */
         for (int i = 0; i < 3000; i++) {
             int    x1 = rand() % myLCD->width();
             int    y1 = rand() % myLCD->height();
@@ -335,8 +350,7 @@
             myLCD->printf("Hello World");
         }
 
-        /* Drawing random pixels */
-        for (int i = 0; i < 500000; i++) {
+        for (unsigned int i = 0; i < 200000; i++) {
             int    x1 = rand() % myLCD->width();
             int    y1 = rand() % myLCD->height();
 
@@ -347,8 +361,7 @@
             myLCD->pixel(x1, y1, RGB(r, g, b));
         }
 
-        /* Drawing random rectangles */
-        for (int i = 0; i < 500; i++) {
+        for (int i = 0; i < 1000; i++) {
             int    x1 = rand() % myLCD->width();
             int    y1 = rand() % myLCD->height();
 
@@ -359,9 +372,24 @@
             int    g = rand() % 0xff;
             int    b = rand() % 0xff;
 
+            //myLCD->rect(x1, y1, x2, y2, RGB(r, g, b));
             myLCD->fillrect(x1, y1, x2, y2, RGB(r, g, b));
         }
 
+//        for (int i = 0; i < 1500; i++) {
+//            int    x1 = rand() % myLCD->width();
+//            int    y1 = rand() % myLCD->height();
+
+//            int    rad = rand() % myLCD->height() / 2;
+
+//            int    r = rand() % 0xff;
+//            int    g = rand() % 0xff;
+//            int    b = rand() % 0xff;
+
+//            myLCD->circle(x1, y1, rad, RGB(r, g, b));
+//            myLCD->fillcircle(x1, y1, rad, RGB(r, g, b));
+//        }
+
         /* USER CODE END WHILE */
         /* USER CODE BEGIN 3 */
     }
@@ -373,45 +401,102 @@
 * @brief System Clock Configuration
 * @retval None
 */
-//void SystemClock_Config(void)
-//{
-//    RCC_OscInitTypeDef          RCC_OscInitStruct = { 0 };
-//    RCC_ClkInitTypeDef          RCC_ClkInitStruct = { 0 };
-//    RCC_PeriphCLKInitTypeDef    PeriphClkInitStruct = { 0 };
-//    /** Configure the main internal regulator output voltage
-//*/
+void SystemClock_Config(void)
+{
+    RCC_OscInitTypeDef          RCC_OscInitStruct = { 0 };
+    RCC_ClkInitTypeDef          RCC_ClkInitStruct = { 0 };
+    RCC_PeriphCLKInitTypeDef    PeriphClkInitStruct = { 0 };
+    /** Configure the main internal regulator output voltage
+*/
+
+    __HAL_RCC_PWR_CLK_ENABLE();
+    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
 
-//    __HAL_RCC_PWR_CLK_ENABLE();
-//    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+    /** Initializes the CPU, AHB and APB busses clocks
+*/
+    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+    RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+    RCC_OscInitStruct.PLL.PLLM = 8;
+    RCC_OscInitStruct.PLL.PLLN = 336;
+    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+    RCC_OscInitStruct.PLL.PLLQ = 7;
+    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
+        Error_Handler();
+    }
 
-//    /** Initializes the CPU, AHB and APB busses clocks
-//*/
-//    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
-//    RCC_OscInitStruct.HSEState = RCC_HSE_ON;
-//    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
-//    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
-//    RCC_OscInitStruct.PLL.PLLM = 8;
-//    RCC_OscInitStruct.PLL.PLLN = 336;
-//    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
-//    RCC_OscInitStruct.PLL.PLLQ = 7;
-//    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
+    /** Initializes the CPU, AHB and APB busses clocks
+*/
+    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
+    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) {
+        Error_Handler();
+    }
+
+    //  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
+    //  PeriphClkInitStruct.PLLI2S.PLLI2SN = 316;
+    //  PeriphClkInitStruct.PLLI2S.PLLI2SR = 7;
+    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
+        Error_Handler();
+    }
+}
+
+/**
+* @brief I2S3 Initialization Function
+* @param None
+* @retval None
+*/
+//static void MX_I2S3_Init(void)
+//{
+//    /* USER CODE BEGIN I2S3_Init 0 */
+//    /* USER CODE END I2S3_Init 0 */
+//    /* USER CODE BEGIN I2S3_Init 1 */
+//    /* USER CODE END I2S3_Init 1 */
+//    hi2s3.Instance = SPI3;
+//    hi2s3.Init.Mode = I2S_MODE_MASTER_TX;
+//    hi2s3.Init.Standard = I2S_STANDARD_PHILIPS;
+//    hi2s3.Init.DataFormat = I2S_DATAFORMAT_16B;
+//    hi2s3.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE;
+//    hi2s3.Init.AudioFreq = I2S_AUDIOFREQ_44K;
+//    hi2s3.Init.CPOL = I2S_CPOL_LOW;
+//    hi2s3.Init.ClockSource = I2S_CLOCK_PLL;
+//    hi2s3.Init.FullDuplexMode = I2S_FULLDUPLEXMODE_DISABLE;
+//    if (HAL_I2S_Init(&hi2s3) != HAL_OK) {
 //        Error_Handler();
 //    }
-
-//    /** Initializes the CPU, AHB and APB busses clocks
-//*/
-//    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
-//    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
-//    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
-//    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
-//    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
-//    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) {
+//    /* USER CODE BEGIN I2S3_Init 2 */
+//    /* USER CODE END I2S3_Init 2 */
+//}
+/**
+* @brief USB_OTG_FS Initialization Function
+* @param None
+* @retval None
+*/
+//static void MX_USB_OTG_FS_PCD_Init(void)
+//{
+//    /* USER CODE BEGIN USB_OTG_FS_Init 0 */
+//    /* USER CODE END USB_OTG_FS_Init 0 */
+//    /* USER CODE BEGIN USB_OTG_FS_Init 1 */
+//    /* USER CODE END USB_OTG_FS_Init 1 */
+//    hpcd_USB_OTG_FS.Instance = USB_OTG_FS;
+//    hpcd_USB_OTG_FS.Init.dev_endpoints = 4;
+//    hpcd_USB_OTG_FS.Init.speed = PCD_SPEED_FULL;
+//    hpcd_USB_OTG_FS.Init.dma_enable = DISABLE;
+//    hpcd_USB_OTG_FS.Init.phy_itface = PCD_PHY_EMBEDDED;
+//    hpcd_USB_OTG_FS.Init.Sof_enable = DISABLE;
+//    hpcd_USB_OTG_FS.Init.low_power_enable = DISABLE;
+//    hpcd_USB_OTG_FS.Init.lpm_enable = DISABLE;
+//    hpcd_USB_OTG_FS.Init.vbus_sensing_enable = DISABLE;
+//    hpcd_USB_OTG_FS.Init.use_dedicated_ep1 = DISABLE;
+//    if (HAL_PCD_Init(&hpcd_USB_OTG_FS) != HAL_OK) {
 //        Error_Handler();
 //    }
-
-//    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
-//        Error_Handler();
-//    }
+//    /* USER CODE BEGIN USB_OTG_FS_Init 2 */
+//    /* USER CODE END USB_OTG_FS_Init 2 */
 //}
 
 /**