目录



W25Q128 全部指令非常多,但常用的如下几个指令:

以下流程省略了拉低/拉高片选信号CS。
擦除扇区:

写操作



spi.h
- /* USER CODE BEGIN Header */
- /**
- ******************************************************************************
- * @file spi.h
- * @brief This file contains all the function prototypes for
- * the spi.c file
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2023 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- */
- /* USER CODE END Header */
- /* Define to prevent recursive inclusion -------------------------------------*/
- #ifndef __SPI_H__
- #define __SPI_H__
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /* Includes ------------------------------------------------------------------*/
- #include "main.h"
-
- /* USER CODE BEGIN Includes */
-
- /* USER CODE END Includes */
-
- extern SPI_HandleTypeDef hspi1;
-
- /* USER CODE BEGIN Private defines */
-
- /* USER CODE END Private defines */
-
- void MX_SPI1_Init(void);
-
- /* USER CODE BEGIN Prototypes */
- uint8_t spi1_read_write_byte(uint8_t data);
- /* USER CODE END Prototypes */
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* __SPI_H__ */
-
spi.c
- /* USER CODE BEGIN Header */
- /**
- ******************************************************************************
- * @file spi.c
- * @brief This file provides code for the configuration
- * of the SPI instances.
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2023 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- */
- /* USER CODE END Header */
- /* Includes ------------------------------------------------------------------*/
- #include "spi.h"
-
- /* USER CODE BEGIN 0 */
-
- /* USER CODE END 0 */
-
- SPI_HandleTypeDef hspi1;
-
- /* SPI1 init function */
- void MX_SPI1_Init(void)
- {
-
- /* USER CODE BEGIN SPI1_Init 0 */
-
- /* USER CODE END SPI1_Init 0 */
-
- /* USER CODE BEGIN SPI1_Init 1 */
-
- /* USER CODE END SPI1_Init 1 */
- hspi1.Instance = SPI1;
- hspi1.Init.Mode = SPI_MODE_MASTER;
- hspi1.Init.Direction = SPI_DIRECTION_2LINES;
- hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
- hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
- hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
- hspi1.Init.NSS = SPI_NSS_SOFT;
- hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
- hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
- hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
- hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
- hspi1.Init.CRCPolynomial = 10;
- if (HAL_SPI_Init(&hspi1) != HAL_OK)
- {
- Error_Handler();
- }
- /* USER CODE BEGIN SPI1_Init 2 */
-
- /* USER CODE END SPI1_Init 2 */
-
- }
-
- void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
- {
-
- GPIO_InitTypeDef GPIO_InitStruct = {0};
- if(spiHandle->Instance==SPI1)
- {
- /* USER CODE BEGIN SPI1_MspInit 0 */
-
- /* USER CODE END SPI1_MspInit 0 */
- /* SPI1 clock enable */
- __HAL_RCC_SPI1_CLK_ENABLE();
-
- __HAL_RCC_GPIOA_CLK_ENABLE();
- /**SPI1 GPIO Configuration
- PA5 ------> SPI1_SCK
- PA6 ------> SPI1_MISO
- PA7 ------> SPI1_MOSI
- */
- GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_7;
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
- HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
- GPIO_InitStruct.Pin = GPIO_PIN_6;
- GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
- GPIO_InitStruct.Pull = GPIO_NOPULL;
- HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
- /* USER CODE BEGIN SPI1_MspInit 1 */
-
- /* USER CODE END SPI1_MspInit 1 */
- }
- }
-
- void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle)
- {
-
- if(spiHandle->Instance==SPI1)
- {
- /* USER CODE BEGIN SPI1_MspDeInit 0 */
-
- /* USER CODE END SPI1_MspDeInit 0 */
- /* Peripheral clock disable */
- __HAL_RCC_SPI1_CLK_DISABLE();
-
- /**SPI1 GPIO Configuration
- PA5 ------> SPI1_SCK
- PA6 ------> SPI1_MISO
- PA7 ------> SPI1_MOSI
- */
- HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7);
-
- /* USER CODE BEGIN SPI1_MspDeInit 1 */
-
- /* USER CODE END SPI1_MspDeInit 1 */
- }
- }
-
- /* USER CODE BEGIN 1 */
- uint8_t spi1_read_write_byte(uint8_t data)
- {
- uint8_t rec_data = 0;
-
- HAL_SPI_TransmitReceive(&hspi1, &data, &rec_data, 1, 1000);
-
- return rec_data;
- }
- /* USER CODE END 1 */
main.c
- /* USER CODE BEGIN Header */
- /**
- ******************************************************************************
- * @file : main.c
- * @brief : Main program body
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2023 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- */
- /* USER CODE END Header */
- /* Includes ------------------------------------------------------------------*/
- #include "main.h"
- #include "spi.h"
- #include "usart.h"
- #include "gpio.h"
-
- /* Private includes ----------------------------------------------------------*/
- /* USER CODE BEGIN Includes */
- #include "stdio.h"
- #include "string.h"
- #include "w25q128.h"
- /* USER CODE END Includes */
-
- /* Private typedef -----------------------------------------------------------*/
- /* USER CODE BEGIN PTD */
-
- /* USER CODE END PTD */
-
- /* Private define ------------------------------------------------------------*/
- /* USER CODE BEGIN PD */
- /* USER CODE END PD */
-
- /* Private macro -------------------------------------------------------------*/
- /* USER CODE BEGIN PM */
- #define TEXT_SIZE 16
- #define FLASH_WriteAddress 0x00000
- #define FLASH_ReadAddress FLASH_WriteAddress
- /* USER CODE END PM */
-
- /* Private variables ---------------------------------------------------------*/
-
- /* USER CODE BEGIN PV */
-
- /* USER CODE END PV */
-
- /* Private function prototypes -----------------------------------------------*/
- void SystemClock_Config(void);
- /* USER CODE BEGIN PFP */
-
- /* USER CODE END PFP */
-
- /* Private user code ---------------------------------------------------------*/
- /* USER CODE BEGIN 0 */
-
- /* USER CODE END 0 */
-
- /**
- * @brief The application entry point.
- * @retval int
- */
- int main(void)
- {
- /* USER CODE BEGIN 1 */
- uint8_t datatemp[TEXT_SIZE];
- /* 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_SPI1_Init();
- MX_USART1_UART_Init();
- /* USER CODE BEGIN 2 */
- w25q128_init();
-
- /* 写入测试数据 */
- sprintf((char *)datatemp, "liangxu shuai");
- w25q128_write(datatemp, FLASH_WriteAddress, TEXT_SIZE);
- printf("数据写入完成!\r\n");
-
- /* 读出测试数据 */
- memset(datatemp, 0, TEXT_SIZE);
- w25q128_read(datatemp, FLASH_ReadAddress, TEXT_SIZE);
- printf("读出数据:%s\r\n", datatemp);
- /* USER CODE END 2 */
-
- /* Infinite loop */
- /* USER CODE BEGIN WHILE */
- while (1)
- {
- /* 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};
-
- /** Initializes the RCC Oscillators according to the specified parameters
- * in the RCC_OscInitTypeDef structure.
- */
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
- RCC_OscInitStruct.HSEState = RCC_HSE_ON;
- RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
- RCC_OscInitStruct.HSIState = RCC_HSI_ON;
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
- RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
- RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
- if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
- {
- Error_Handler();
- }
-
- /** Initializes the CPU, AHB and APB buses 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_DIV2;
- RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
-
- if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
- {
- Error_Handler();
- }
- }
-
- /* 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 */
- /* User can add his own implementation to report the HAL error return state */
- __disable_irq();
- while (1)
- {
- }
- /* 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,
- ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
- /* USER CODE END 6 */
- }
- #endif /* USE_FULL_ASSERT */