DMA based FillRect works

Src/dma.c

@@ -0,0 +1,102 @@
+/**
+  ******************************************************************************
+  * File Name          : dma.c
+  * Description        : This file provides code for the configuration
+  *                      of all the requested memory to memory DMA transfers.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2019 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
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "dma.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*----------------------------------------------------------------------------*/
+/* Configure DMA                                                              */
+/*----------------------------------------------------------------------------*/
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/** 
+  * Enable DMA controller clock
+  */
+void MX_DMA_Init(void) 
+{
+
+  /* Init with LL driver */
+  /* DMA controller clock enable */
+  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA2);
+
+  /* Configure DMA request MEMTOMEM_DMA2_Stream4 */
+
+  /* Select channel */
+  LL_DMA_SetChannelSelection(DMA2, LL_DMA_STREAM_4, LL_DMA_CHANNEL_0);
+
+  /* Set transfer direction */
+  LL_DMA_SetDataTransferDirection(DMA2, LL_DMA_STREAM_4, LL_DMA_DIRECTION_MEMORY_TO_MEMORY);
+
+  /* Set priority level */
+  LL_DMA_SetStreamPriorityLevel(DMA2, LL_DMA_STREAM_4, LL_DMA_PRIORITY_LOW);
+
+  /* Set DMA mode */
+  LL_DMA_SetMode(DMA2, LL_DMA_STREAM_4, LL_DMA_MODE_NORMAL);
+
+  /* Set peripheral increment mode */
+  LL_DMA_SetPeriphIncMode(DMA2, LL_DMA_STREAM_4, LL_DMA_PERIPH_NOINCREMENT);
+
+  /* Set memory increment mode */
+  LL_DMA_SetMemoryIncMode(DMA2, LL_DMA_STREAM_4, LL_DMA_MEMORY_NOINCREMENT);
+
+  /* Set peripheral data width */
+  LL_DMA_SetPeriphSize(DMA2, LL_DMA_STREAM_4, LL_DMA_PDATAALIGN_HALFWORD);
+
+  /* Set memory data width */
+  LL_DMA_SetMemorySize(DMA2, LL_DMA_STREAM_4, LL_DMA_MDATAALIGN_HALFWORD);
+
+  /* Enable FIFO mode */
+  LL_DMA_EnableFifoMode(DMA2, LL_DMA_STREAM_4);
+
+  /* Set FIFO threshold */
+  LL_DMA_SetFIFOThreshold(DMA2, LL_DMA_STREAM_4, LL_DMA_FIFOTHRESHOLD_FULL);
+
+  /* Set memory burst size */
+  LL_DMA_SetMemoryBurstxfer(DMA2, LL_DMA_STREAM_4, LL_DMA_MBURST_SINGLE);
+
+  /* Set peripheral burst size */
+  LL_DMA_SetPeriphBurstxfer(DMA2, LL_DMA_STREAM_4, LL_DMA_PBURST_SINGLE);
+
+  /* DMA interrupt init */
+  /* DMA2_Stream4_IRQn interrupt configuration */
+  NVIC_SetPriority(DMA2_Stream4_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
+  NVIC_EnableIRQ(DMA2_Stream4_IRQn);
+
+}
+
+/* USER CODE BEGIN 2 */
+
+/* USER CODE END 2 */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

Src/fsmc.c

@@ -51,10 +51,10 @@ void MX_FSMC_Init(void)
   hsram1.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE;
   hsram1.Init.PageSize = FSMC_PAGE_SIZE_NONE;
   /* Timing */
-  Timing.AddressSetupTime = 15;
+  Timing.AddressSetupTime = 0;
   Timing.AddressHoldTime = 15;
-  Timing.DataSetupTime = 255;
-  Timing.BusTurnAroundDuration = 15;
+  Timing.DataSetupTime = 1;
+  Timing.BusTurnAroundDuration = 0;
   Timing.CLKDivision = 16;
   Timing.DataLatency = 17;
   Timing.AccessMode = FSMC_ACCESS_MODE_A;

Src/main.c

@@ -20,13 +20,14 @@
 
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
+#include "dma.h"
 #include "usart.h"
 #include "gpio.h"
 #include "fsmc.h"
 
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
-#include <ILI9341.h>
+#include <mainloop.h>
 
 /* USER CODE END Includes */
 
@@ -91,20 +92,17 @@ int main(void)
 
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
+  MX_DMA_Init();
   MX_USART1_UART_Init();
   MX_FSMC_Init();
   /* USER CODE BEGIN 2 */
-  ili9341_init();
-
+  MainLoop();
   /* USER CODE END 2 */
 
   /* Infinite loop */
   /* USER CODE BEGIN WHILE */
   while (1)
   {
-	  LL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
-	  LL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);
-	  LL_mDelay(500);
     /* USER CODE END WHILE */
 
     /* USER CODE BEGIN 3 */

Src/stm32f4xx_it.c

@@ -23,6 +23,8 @@
 #include "stm32f4xx_it.h"
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
+#include "interrupt_handlers.h"
+
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -197,6 +199,33 @@ void SysTick_Handler(void)
 /* please refer to the startup file (startup_stm32f4xx.s).                    */
 /******************************************************************************/
 
+/**
+  * @brief This function handles USART1 global interrupt.
+  */
+void USART1_IRQHandler(void)
+{
+  /* USER CODE BEGIN USART1_IRQn 0 */
+
+  /* USER CODE END USART1_IRQn 0 */
+  /* USER CODE BEGIN USART1_IRQn 1 */
+
+  /* USER CODE END USART1_IRQn 1 */
+}
+
+/**
+  * @brief This function handles DMA2 stream4 global interrupt.
+  */
+void DMA2_Stream4_IRQHandler(void)
+{
+  /* USER CODE BEGIN DMA2_Stream4_IRQn 0 */
+  HandleLcdDmaIrq();
+  /* USER CODE END DMA2_Stream4_IRQn 0 */
+  
+  /* USER CODE BEGIN DMA2_Stream4_IRQn 1 */
+
+  /* USER CODE END DMA2_Stream4_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */

Src/usart.c

@@ -47,6 +47,10 @@ void MX_USART1_UART_Init(void)
   GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
   LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
+  /* USART1 interrupt Init */
+  NVIC_SetPriority(USART1_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
+  NVIC_EnableIRQ(USART1_IRQn);
+
   USART_InitStruct.BaudRate = 115200;
   USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
   USART_InitStruct.StopBits = LL_USART_STOPBITS_1;