zhy200308
1b8f0f806b
日志实测定位：单块 flush 耗时~9.7ms，远超面板扫描周期(~16ms)导致扫描 在写入途中'套圈'，方块被撕成多个错位副本。两处根因： - LCD_SPI_WaitShiftEmpty 轮询 TXC，但 HAL 在 EOT 后关闭 SPI，TXC 恒0， 每帧白等满 5ms 超时。HAL 的 EOT/阻塞传输已保证数据移出，直接删除。 - SPI 仅 10MHz(pll1_q40M/4)，0.8us/byte。改 prescaler 4->2 = 20MHz。 合计单块 flush ~9.7ms -> ~2.3ms，远小于扫描周期，错位应显著消除。 spi.c 与 .ioc(本就=_2) 对齐。
172 lines
5.2 KiB
C
172 lines
5.2 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file spi.c
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* @brief This file provides code for the configuration
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* of the SPI instances.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2026 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "spi.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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SPI_HandleTypeDef hspi1;
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DMA_HandleTypeDef hdma_spi1_tx;
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/* SPI1 init function */
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void MX_SPI1_Init(void)
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{
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/* USER CODE BEGIN SPI1_Init 0 */
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/* USER CODE END SPI1_Init 0 */
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/* USER CODE BEGIN SPI1_Init 1 */
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/* USER CODE END SPI1_Init 1 */
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hspi1.Instance = SPI1;
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hspi1.Init.Mode = SPI_MODE_MASTER;
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hspi1.Init.Direction = SPI_DIRECTION_2LINES;
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hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
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hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
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hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
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hspi1.Init.NSS = SPI_NSS_SOFT;
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/* pll1_q=40MHz / 2 = 20MHz SPI（原来 /4=10MHz 太慢，单块刷新耗时逼近
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* 面板扫描周期导致移动错位）。ILI9341 写周期实测可稳定跑 20~40MHz；
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* 若接线长/花屏，退回 SPI_BAUDRATEPRESCALER_4。 */
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hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
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hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
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hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
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hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
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hspi1.Init.CRCPolynomial = 0x0;
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hspi1.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
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hspi1.Init.NSSPolarity = SPI_NSS_POLARITY_LOW;
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hspi1.Init.FifoThreshold = SPI_FIFO_THRESHOLD_01DATA;
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hspi1.Init.TxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;
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hspi1.Init.RxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;
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hspi1.Init.MasterSSIdleness = SPI_MASTER_SS_IDLENESS_00CYCLE;
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hspi1.Init.MasterInterDataIdleness = SPI_MASTER_INTERDATA_IDLENESS_00CYCLE;
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hspi1.Init.MasterReceiverAutoSusp = SPI_MASTER_RX_AUTOSUSP_DISABLE;
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hspi1.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_DISABLE;
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hspi1.Init.IOSwap = SPI_IO_SWAP_DISABLE;
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if (HAL_SPI_Init(&hspi1) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN SPI1_Init 2 */
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/* USER CODE END SPI1_Init 2 */
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}
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void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
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{
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
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if(spiHandle->Instance==SPI1)
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{
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/* USER CODE BEGIN SPI1_MspInit 0 */
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/* USER CODE END SPI1_MspInit 0 */
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/** Initializes the peripherals clock
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*/
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PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SPI1;
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PeriphClkInitStruct.Spi123ClockSelection = RCC_SPI123CLKSOURCE_PLL;
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if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/* SPI1 clock enable */
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__HAL_RCC_SPI1_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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/**SPI1 GPIO Configuration
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PB3 (JTDO/TRACESWO) ------> SPI1_SCK
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PB4 (NJTRST) ------> SPI1_MISO
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PB5 ------> SPI1_MOSI
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* SPI1 DMA Init */
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/* SPI1_TX Init */
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hdma_spi1_tx.Instance = DMA1_Stream2;
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hdma_spi1_tx.Init.Request = DMA_REQUEST_SPI1_TX;
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hdma_spi1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
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hdma_spi1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_spi1_tx.Init.MemInc = DMA_MINC_ENABLE;
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hdma_spi1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_spi1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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hdma_spi1_tx.Init.Mode = DMA_NORMAL;
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hdma_spi1_tx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
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hdma_spi1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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if (HAL_DMA_Init(&hdma_spi1_tx) != HAL_OK)
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{
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Error_Handler();
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}
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__HAL_LINKDMA(spiHandle,hdmatx,hdma_spi1_tx);
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/* SPI1 interrupt Init */
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HAL_NVIC_SetPriority(SPI1_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(SPI1_IRQn);
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/* USER CODE BEGIN SPI1_MspInit 1 */
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/* USER CODE END SPI1_MspInit 1 */
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}
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}
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void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle)
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{
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if(spiHandle->Instance==SPI1)
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{
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/* USER CODE BEGIN SPI1_MspDeInit 0 */
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/* USER CODE END SPI1_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_SPI1_CLK_DISABLE();
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/**SPI1 GPIO Configuration
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PB3 (JTDO/TRACESWO) ------> SPI1_SCK
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PB4 (NJTRST) ------> SPI1_MISO
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PB5 ------> SPI1_MOSI
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*/
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HAL_GPIO_DeInit(GPIOB, GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5);
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/* SPI1 DMA DeInit */
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HAL_DMA_DeInit(spiHandle->hdmatx);
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/* SPI1 interrupt Deinit */
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HAL_NVIC_DisableIRQ(SPI1_IRQn);
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/* USER CODE BEGIN SPI1_MspDeInit 1 */
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/* USER CODE END SPI1_MspDeInit 1 */
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}
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}
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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