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.
Below is the brief story of what I did:
- Created a project for my STM32F407VE board in the STM32CubeIDE
- Set the
Clock Configuration
to match the one used by Mbed for the Seeed Arch Max board:
- Selected
FSMC
in theConnectivity
category and configured it as below: - 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 themain.c
content of theSTM32CubeIDE
project. Copy & Pasted
the other files with codes from theSTM32CubeIDE
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 aFSMC_8
protocol and replaced theTFT::set_orientation(int orient)
function with the one used bymcufriend
for arduino. - Modified the
main.cpp
as needed.
Wiring
STM32F407VE | TFT LCD module |
---|---|
+3.3V | 3V3 |
GND | GND |
PB_12 | LCD_RST |
GND | LCD_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 protocol | BUS_8 | FSMC_8 |
Operation \ Time | ms | ms |
Clear | 2283.980 | 38.454 |
Plot | 192.066 | 11.365 |
8bit BMP | 63.805 | 41.338 |
Large Font | 163.872 | 7.895 |
Sparce pixels | 2072.265/1458.051 | 74.107/52.168 |
16bit BMP | 2288.589 | 59.904 |
main.cpp
- Committer:
- hudakz
- Date:
- 2020-05-10
- Revision:
- 0:fa952828e34c
- Child:
- 1:47c996032a9e
File content as of revision 0:fa952828e34c:
/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * <h2><center>© Copyright (c) 2020 STMicroelectronics. * All rights reserved.</center></h2> * * This software component is licensed by ST under BSD 3-Clause license, * the "License"; You may not use this file except in compliance with the * License. You may obtain a copy of the License at: * opensource.org/licenses/BSD-3-Clause * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #ifdef __MBED__ #include "mbed.h" #include "string" #include "Arial12x12.h" #include "Arial24x23.h" #include "Terminal6x8.h" #include "Arial43x48_digits.h" #include "pict.h" #include "pavement_48x34.h" #include "TFT_MIPI.h" #endif /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ TFT_MIPI * myLCD; Timer tmr; int time1; int time2; unsigned short backgroundColor = Black; unsigned short foregroundColor = White; uint8_t orient = 0; /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ SRAM_HandleTypeDef hsram1; /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ //static void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_FSMC_Init(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ uint16_t RGB(uint16_t r, uint16_t g, uint16_t b) { return(r << 16) | (g << 8) | b; } /* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ /* 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(); MX_FSMC_Init(); /* USER CODE BEGIN 2 */ // LCD_RST : PB_12 -> LCD_RST // FSMC_NE1: not used // GND -> LCD_CS // FSMC_A18: PD_13 -> LCD_RS // FSMC_NWE: PD_5 -> LCD_WR // FSMC_NOE: PD_4 -> LCD_RD // FSMC_D0 : PD_14 -> LCD_D0 // FSMC_D1 : PD_15 -> LCD_D1 // FSMC_D2 : PD_0 -> LCD_D2 // FSMC_D3 : PD_1 -> LCD_D3 // FSMC_D4 : PE_7 -> LCD_D4 // 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 // 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); printf("\n\nSystem Core Clock = %.3f MHZ\r\n", (float)SystemCoreClock / 1000000); 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); /* LCD memory 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); } bool readerror = false; for (unsigned short i = 0; i < myLCD->width(); i++) { /* verify line */ readback = myLCD->pixelread(i, 0); if (readback != i * colorstep) { readerror = true; printf("pix %.4X readback %.4X\r\n", i * colorstep, readback); } } myLCD->locate(0, 10); myLCD->printf("Pixelread test %s\r\n", readerror ? "FAILED" : "PASSED"); thread_sleep_for(2000); /* Auto carriage return test */ myLCD->cls(); 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); /* Clear screen test */ tmr.reset(); myLCD->cls(); time1 = tmr.read_us(); myLCD->locate(2, 75); myLCD->printf("cls: %.3fms", (float)time1 / 1000); printf("cls: %.3fms\r\n", (float)time1 / 1000); thread_sleep_for(2000); myLCD->cls(); tmr.reset(); /* Simple graphics test */ 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); 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); } time1 = tmr.read_us(); myLCD->locate(2, 75); 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); /* Bitmap test */ Bitmap_s bmp = { 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); time1 = tmr.read_us(); myLCD->locate(2, 75); myLCD->printf("bmp: %.3fms", (float)time1 / 1000); printf("bmp: %.3fms\r\n", (float)time1 / 1000); thread_sleep_for(2000); /* Large font test */ myLCD->cls(); myLCD->set_font((unsigned char*)Arial43x48_digits, 46, 58, false); /* only digits, variable-width disabled */ tmr.reset(); myLCD->locate(0, 0); myLCD->printf("%d", 12345); time1 = tmr.read_us(); myLCD->locate(2, 75); 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); /* 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); } time1 = tmr.read_us(); thread_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); } time2 = tmr.read_us(); myLCD->cls(); myLCD->locate(2, 75); 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 */ myLCD->cls(); myLCD->set_font((unsigned char*)Arial24x23); myLCD->locate(2, 10); myLCD->printf("Scrolling"); 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); myLCD->scroll(1); /* up 1 */ thread_sleep_for(1000); myLCD->scroll(0); /* center */ thread_sleep_for(1000); myLCD->scroll(myLCD->sizeY() - 1); /* down 1 */ thread_sleep_for(1000); myLCD->scroll(myLCD->sizeY()); /* same as 0, center */ thread_sleep_for(1000); myLCD->scroll(myLCD->sizeY() >> 1); /* half screen */ thread_sleep_for(1000); myLCD->scrollreset(); /* center */ thread_sleep_for(1000); for (unsigned short i = 1; i <= myLCD->sizeY(); i++) { myLCD->scroll(i); thread_sleep_for(2); } thread_sleep_for(2000); /* Color inversion */ for (unsigned short i = 0; i <= 8; i++) { myLCD->invert(i & 1); thread_sleep_for(200); } thread_sleep_for(2000); /* 16bit bitmap test */ myLCD->cls(); tmr.reset(); for (int y = 0; y < myLCD->height(); y += 34) { for (int x = 0; x < myLCD->width(); x += 48) myLCD->Bitmap(x, y, 48, 34, (unsigned char*)pavement_48x34); } time1 = tmr.read_us(); myLCD->locate(2, 75); 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); /* Drawing random lines */ for (int i = 0; i < 6000; i++) { int x1 = rand() % myLCD->width(); int y1 = rand() % myLCD->height(); int x2 = rand() % myLCD->width(); int y2 = rand() % myLCD->height(); int r = rand() % 0xff; int g = rand() % 0xff; int b = rand() % 0xff; 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(); int r = rand() % 0xff; int g = rand() % 0xff; int b = rand() % 0xff; myLCD->locate(x1, y1); myLCD->foreground(RGB(r, g, b)); myLCD->printf("Hello World"); } /* Drawing random pixels */ for (int i = 0; i < 500000; i++) { int x1 = rand() % myLCD->width(); int y1 = rand() % myLCD->height(); int r = rand() % 0xff; int g = rand() % 0xff; int b = rand() % 0xff; myLCD->pixel(x1, y1, RGB(r, g, b)); } /* Drawing random rectangles */ for (int i = 0; i < 500; i++) { int x1 = rand() % myLCD->width(); int y1 = rand() % myLCD->height(); int x2 = rand() % myLCD->width(); int y2 = rand() % myLCD->height(); int r = rand() % 0xff; int g = rand() % 0xff; int b = rand() % 0xff; myLCD->fillrect(x1, y1, x2, y2, RGB(r, g, b)); } /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ } /** * @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 //*/ // __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_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(); // } // if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) { // Error_Handler(); // } //} /** * @brief GPIO Initialization Function * @param None * @retval None */ static void MX_GPIO_Init(void) { /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOE_CLK_ENABLE(); __HAL_RCC_GPIOH_CLK_ENABLE(); } /* FSMC initialization function */ static void MX_FSMC_Init(void) { /* USER CODE BEGIN FSMC_Init 0 */ /* USER CODE END FSMC_Init 0 */ FSMC_NORSRAM_TimingTypeDef Timing = { 0 }; /* USER CODE BEGIN FSMC_Init 1 */ /* USER CODE END FSMC_Init 1 */ /** Perform the SRAM1 memory initialization sequence */ hsram1.Instance = FSMC_NORSRAM_DEVICE; hsram1.Extended = FSMC_NORSRAM_EXTENDED_DEVICE; /* hsram1.Init */ hsram1.Init.NSBank = FSMC_NORSRAM_BANK1; hsram1.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE; hsram1.Init.MemoryType = FSMC_MEMORY_TYPE_SRAM; hsram1.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_8; hsram1.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_DISABLE; hsram1.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW; hsram1.Init.WrapMode = FSMC_WRAP_MODE_DISABLE; hsram1.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS; hsram1.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE; hsram1.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE; hsram1.Init.ExtendedMode = FSMC_EXTENDED_MODE_DISABLE; hsram1.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE; hsram1.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE; hsram1.Init.PageSize = FSMC_PAGE_SIZE_NONE; /* Timing */ Timing.AddressSetupTime = 0; Timing.AddressHoldTime = 0; Timing.DataSetupTime = 12; Timing.BusTurnAroundDuration = 0; Timing.CLKDivision = 16; Timing.DataLatency = 17; Timing.AccessMode = FSMC_ACCESS_MODE_A; /* ExtTiming */ if (HAL_SRAM_Init(&hsram1, &Timing, NULL) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN FSMC_Init 2 */ /* USER CODE END FSMC_Init 2 */ } /* USER CODE BEGIN 4 */ /* USER CODE END 4 */ /** * @brief This function is executed in case of error occurrence. * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler_Debug */ printf("Error_Handler called\r\n"); while (true) { } /* User can add his own implementation to report the HAL error return state */ /* USER CODE END Error_Handler_Debug */ } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None */ void assert_failed(uint8_t* file, uint32_t line) { /* USER CODE BEGIN 6 */ /* User can add his own implementation to report the file name and line number, tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif /* USE_FULL_ASSERT */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/