Windows 10 20H2
HLK-W806-V1.0-KIT
WM_SDK_W806_v0.6.0

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       摘自《W806 芯片设计指导书 V1.0》、《W806 MCU 芯片规格书 V2.0》、《WM_W800_寄存器手册 V2.1》

高速 SPI 设备控制器

       兼容通用 SPI 物理层协议，通过约定与主机交互的数据格式，主机对设备的高速访问，最高支持工作频率为50Mbps。

兼容通用 SPI 协议
可选择的电平中断信号
最高支持 50Mbps 速率
简单的帧格式，全硬件解析与 DMA

库函数

函数

HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi);
//初始化SPI的工作模式和速率等HAL_StatusTypeDef HAL_SPI_DeInit(SPI_HandleTypeDef *hspi);
//将初始化之后的SPI接口恢复成默认的状态–各个寄存器复位时的值void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi);
//用于启用SPI时钟，引脚复用，配置DMA及中断优先级等void HAL_SPI_MspDeInit(SPI_HandleTypeDef *hspi);
//用于禁用SPI时钟，将对应引脚恢复成默认的状态HAL_StatusTypeDef HAL_SPI_Transmit(SPI_HandleTypeDef *hspi, uint8_t *pData, uint32_t Size, uint32_t Timeout);
//SPI发送数据，使用超时管理机制 
HAL_StatusTypeDef HAL_SPI_Receive(SPI_HandleTypeDef *hspi, uint8_t *pData, uint32_t Size, uint32_t Timeout);
//SPI接收数据，使用超时管理机制 
HAL_StatusTypeDef HAL_SPI_TransmitReceive(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint32_t Size,uint32_t Timeout);
//SPI收发数据，使用超时管理机制 HAL_StatusTypeDef HAL_SPI_Transmit_IT(SPI_HandleTypeDef *hspi, uint8_t *pData, uint32_t Size);
//SPI中断模式发送
HAL_StatusTypeDef HAL_SPI_Receive_IT(SPI_HandleTypeDef *hspi, uint8_t *pData, uint32_t Size);
//SPI中断模式接收
HAL_StatusTypeDef HAL_SPI_TransmitReceive_IT(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData,uint32_t Size);
//SPI中断模式收发HAL_StatusTypeDef HAL_SPI_Transmit_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint32_t Size);
//SPI DMA模式发送
HAL_StatusTypeDef HAL_SPI_Receive_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint32_t Size);
//SPI DMA模式接收
HAL_StatusTypeDef HAL_SPI_TransmitReceive_DMA(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData,uint32_t Size);
//SPI DMA模式收发HAL_StatusTypeDef HAL_SPI_DMAPause(SPI_HandleTypeDef *hspi);
//SPI DMA传输暂停
HAL_StatusTypeDef HAL_SPI_DMAResume(SPI_HandleTypeDef *hspi);
//SPI DMA传输恢复
HAL_StatusTypeDef HAL_SPI_DMAStop(SPI_HandleTypeDef *hspi);
//SPI DMA传输停止void HAL_SPI_IRQHandler(SPI_HandleTypeDef *hspi);
//SPI 中断服务函数
void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi);
//SPI 发送完毕回调函数
void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi);
//SPI 接收完毕回调函数
void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi);
//SPI 收发完毕回调函数
void HAL_SPI_TxHalfCpltCallback(SPI_HandleTypeDef *hspi);
void HAL_SPI_RxHalfCpltCallback(SPI_HandleTypeDef *hspi);
void HAL_SPI_TxRxHalfCpltCallback(SPI_HandleTypeDef *hspi);
void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi);HAL_SPI_StateTypeDef HAL_SPI_GetState(SPI_HandleTypeDef *hspi);
//获取SPI传输状态
uint32_t             HAL_SPI_GetError(SPI_HandleTypeDef *hspi);

参数

结构体和枚举类型

typedef struct
{uint32_t Mode;                /*!< Specifies the SPI operating mode.This parameter can be a value of @ref SPI_Mode */uint32_t CLKPolarity;         /*!< Specifies the serial clock steady state.This parameter can be a value of @ref SPI_Clock_Polarity */uint32_t CLKPhase;            /*!< Specifies the clock active edge for the bit capture.This parameter can be a value of @ref SPI_Clock_Phase */uint32_t NSS;                 /*!< Specifies whether the NSS signal is managed byhardware (NSS pin) or by software using the SSI bit.This parameter can be a value of @ref SPI_Slave_Select_management */uint32_t BaudRatePrescaler;   /*!< Specifies the Baud Rate prescaler value which will beused to configure the transmit and receive SCK clock.This parameter can be a value of @ref SPI_BaudRate_Prescaler@note The communication clock is derived from the masterclock. The slave clock does not need to be set. */uint32_t FirstByte;			  /* Specifies whether data transfers start from high byte or low byte.This parameter can be a value of @ref SPI_HBYTE_LBYTE_transmission */} SPI_InitTypeDef;typedef enum
{HAL_SPI_STATE_RESET      = 0x00U,    /*!< Peripheral not Initialized                         */HAL_SPI_STATE_READY      = 0x01U,    /*!< Peripheral Initialized and ready for use           */HAL_SPI_STATE_BUSY       = 0x02U,    /*!< an internal process is ongoing                     */HAL_SPI_STATE_BUSY_TX    = 0x03U,    /*!< Data Transmission process is ongoing               */HAL_SPI_STATE_BUSY_RX    = 0x04U,    /*!< Data Reception process is ongoing                  */HAL_SPI_STATE_BUSY_TX_RX = 0x05U,    /*!< Data Transmission and Reception process is ongoing */HAL_SPI_STATE_ERROR      = 0x06U,    /*!< SPI error state                                    */HAL_SPI_STATE_ABORT      = 0x07U     /*!< SPI abort is ongoing                               */
} HAL_SPI_StateTypeDef;typedef struct __SPI_HandleTypeDef
{SPI_TypeDef                *Instance;      /*!< SPI registers base address               */SPI_InitTypeDef            Init;           /*!< SPI communication parameters             */uint8_t                    *pTxBuffPtr;    /*!< Pointer to SPI Tx transfer Buffer        */uint32_t                   TxXferSize;     /*!< SPI Tx Transfer size                     */__IO uint32_t              TxXferCount;    /*!< SPI Tx Transfer Counter                  */uint8_t                    *pRxBuffPtr;    /*!< Pointer to SPI Rx transfer Buffer        */uint32_t                   RxXferSize;     /*!< SPI Rx Transfer size                     */__IO uint32_t              RxXferCount;    /*!< SPI Rx Transfer Counter                  */DMA_HandleTypeDef		   *hdmatx;		   /*!< SPI Tx DMA Handle parameters			 */DMA_HandleTypeDef		   *hdmarx;		   /*!< SPI Rx DMA Handle parameters			 */HAL_LockTypeDef            Lock;           /*!< Locking object                           */__IO HAL_SPI_StateTypeDef  State;          /*!< SPI communication state                  */__IO uint32_t              ErrorCode;      /*!< SPI Error code                           */} SPI_HandleTypeDef;

宏参数

#define SPI                ((SPI_TypeDef *)SPI_BASE)#define HAL_SPI_ERROR_NONE              (0x00000000U)   /*!< No error                               */
#define HAL_SPI_ERROR_TXERR				(0x00000001U)	/*!< Tx error                               */
#define HAL_SPI_ERROR_RXERR				(0x00000002U)	/*!< Rx error                               */
#define HAL_SPI_ERROR_DMA               (0x00000010U)   /*!< DMA transfer error                     */// SPI_Mode
#define SPI_MODE_SLAVE                  (0x00000000U)
#define SPI_MODE_MASTER                 (SPI_SPI_CFG_MASTER)// SPI_Clock_Polarity
#define SPI_POLARITY_LOW                (0x00000000U)
#define SPI_POLARITY_HIGH               SPI_SPI_CFG_CPOL// SPI_Clock_Phase
#define SPI_PHASE_1EDGE                 (0x00000000U)
#define SPI_PHASE_2EDGE                 SPI_SPI_CFG_CPHA// SPI_Slave_Select_management
#define SPI_NSS_HARD             		(0x00000000U)
#define SPI_NSS_SOFT                    SPI_CH_CFG_CSSEL// SPI_HBYTE_LBYTE_transmission
#define SPI_LITTLEENDIAN				(0x00000000U)
#define SPI_BIGENDIAN					SPI_SPI_CFG_BIGENDIAN// fclk = 40MHz / (2 * (div + 1))
#define SPI_BAUDRATEPRESCALER_2         (0x00000000U)	// 40M / 2 = 20M
#define SPI_BAUDRATEPRESCALER_4         (0x00000001U)	// 40M / 4 = 10M
#define SPI_BAUDRATEPRESCALER_8         (0x00000003U)	// 40M / 8 = 5M
#define SPI_BAUDRATEPRESCALER_10        (0x00000004U)	// 40M / 10 = 4M
#define SPI_BAUDRATEPRESCALER_20        (0x00000009U)	// 40M / 20 = 2M
#define SPI_BAUDRATEPRESCALER_40        (0x00000013U)	// 40M / 40 = 1M#define BLOCK_SIZE (8 * 1024 - 8)

宏

#define IS_SPI_ALL_INSTANCE(INSTANCE) ((INSTANCE) == SPI1)#define IS_SPI_MODE(__MODE__)      ((__MODE__) == SPI_MODE_MASTER)#define IS_SPI_NSS(__NSS__)        (((__NSS__) == SPI_NSS_SOFT)       || \((__NSS__) == SPI_NSS_HARD_INPUT) || \((__NSS__) == SPI_NSS_HARD_OUTPUT))#define IS_SPI_BIG_OR_LITTLE(__ENDIAN__)	   (((__ENDIAN__) == SPI_LITTLEENDIAN) || \((__ENDIAN__) == SPI_BIGENDIAN))#define IS_SPI_DMA_HANDLE(__HANDLE__)	((__HANDLE__) != NULL)#define __HAL_SPI_ENABLE_TX(__HANDLE__)  SET_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_TXON)#define __HAL_SPI_DISABLE_TX(__HANDLE__)	CLEAR_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_TXON)#define __HAL_SPI_ENABLE_RX(__HANDLE__)  SET_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_RXON)#define __HAL_SPI_DISABLE_RX(__HANDLE__)  CLEAR_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_RXON)#define __HAL_SPI_ENABLE_TXRX(__HANDLE__)  SET_BIT((__HANDLE__)->Instance->CH_CFG, (SPI_CH_CFG_RXON | SPI_CH_CFG_TXON))#define __HAL_SPI_DISABLE_TXRX(__HANDLE__) CLEAR_BIT((__HANDLE__)->Instance->CH_CFG, (SPI_CH_CFG_RXON | SPI_CH_CFG_TXON))#define __HAL_SPI_CLEAR_FIFO(__HANDLE__) do{SET_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_CLEARFIFOS);\while(READ_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_CLEARFIFOS));}while(0U);#define __HAL_SPI_GET_TXFIFO(__HANDLE__) (((__HANDLE__)->Instance->STATUS) & SPI_STATUS_TXFIFO)#define __HAL_SPI_GET_RXFIFO(__HANDLE__) ((((__HANDLE__)->Instance->STATUS) & SPI_STATUS_RXFIFO) >> SPI_STATUS_RXFIFO_Pos)#define __HAL_SPI_SET_CLK_NUM(__HANDLE__, NUM)	(MODIFY_REG((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_LEN, NUM << SPI_CH_CFG_LEN_Pos))#define __HAL_SPI_SET_START(__HANDLE__) SET_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_START)#define __HAL_SPI_GET_BUSY_STATUS(__HANDLE__)	(READ_BIT((__HANDLE__)->Instance->STATUS, SPI_STATUS_BUSY))#define __HAL_SPI_SET_CS_LOW(__HANDLE__)	CLEAR_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_CSLEVEL)#define __HAL_SPI_SET_CS_HIGH(__HANDLE__)	SET_BIT((__HANDLE__)->Instance->CH_CFG, SPI_CH_CFG_CSLEVEL)#define __HAL_SPI_GET_FLAG(__HANDLE__, FLAG)	READ_BIT((__HANDLE__)->Instance->INT_SRC, FLAG)#define __HAL_SPI_CLEAR_FLAG(__HANDLE__, FLAG)	SET_BIT((__HANDLE__)->Instance->INT_SRC, FLAG)#define __HAL_SPI_ENABLE_IT(__HANDLE__, IT)		CLEAR_BIT((__HANDLE__)->Instance->INT_MASK, IT)#define __HAL_SPI_DISABLE_IT(__HANDLE__, IT)	SET_BIT((__HANDLE__)->Instance->INT_MASK, IT)

应用示例

       摘自spi例程

初始化

在main.c中

SPI_HandleTypeDef hspi;
DMA_HandleTypeDef hdma_spi_tx;
DMA_HandleTypeDef hdma_spi_rx;static void SPI_Init(void);
static void DMA_Init(void);static void SPI_Init(void)
{hspi.Instance = SPI;hspi.Init.Mode = SPI_MODE_MASTER;						//工作模式hspi.Init.CLKPolarity = SPI_POLARITY_LOW;				//控制空闲时的时钟电平hspi.Init.CLKPhase = SPI_PHASE_1EDGE;					//控制采样相位hspi.Init.NSS = SPI_NSS_SOFT;							//片选引脚的控制方式hspi.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_20;	//分频系数 其中SPI时钟为40MHzhspi.Init.FirstByte = SPI_LITTLEENDIAN;					//控制数据 MSB或LSBif (HAL_SPI_Init(&hspi) != HAL_OK){Error_Handler();}
}static void DMA_Init(void)
{__HAL_RCC_DMA_CLK_ENABLE();HAL_NVIC_SetPriority(DMA_Channel0_IRQn, 0);HAL_NVIC_EnableIRQ(DMA_Channel0_IRQn);HAL_NVIC_SetPriority(DMA_Channel1_IRQn, 0);HAL_NVIC_EnableIRQ(DMA_Channel1_IRQn);
}

引脚复用

在wm_hal_msp.c中

extern DMA_HandleTypeDef hdma_spi_tx;
extern DMA_HandleTypeDef hdma_spi_rx;void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{__HAL_RCC_SPI_CLK_ENABLE();						//启用SPI时钟__HAL_AFIO_REMAP_SPI_CS(GPIOB, GPIO_PIN_4);		//SPI引脚复用__HAL_AFIO_REMAP_SPI_CLK(GPIOB, GPIO_PIN_2);__HAL_AFIO_REMAP_SPI_MISO(GPIOB, GPIO_PIN_3);__HAL_AFIO_REMAP_SPI_MOSI(GPIOB, GPIO_PIN_5);	hdma_spi_tx.Instance = DMA_Channel0;							//使用的DMA通道hdma_spi_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;				//DMA传输方向 这里疑似有问题，见后文hdma_spi_tx.Init.DestInc = DMA_DINC_DISABLE;					//目标地址是否自增hdma_spi_tx.Init.SrcInc = DMA_SINC_ENABLE;						//数据地址是否自增hdma_spi_tx.Init.DataAlignment = DMA_DATAALIGN_WORD;			//数据对齐方式 这里疑似有问题，见后文hdma_spi_tx.Init.Mode = DMA_MODE_NORMAL_SINGLE;					//DMA工作模式hdma_spi_tx.Init.RequestSourceSel = DMA_REQUEST_SOURCE_SPI_TX;	//DMA请求源__HAL_LINKDMA(hspi, hdmatx, hdma_spi_tx);if (HAL_DMA_Init(&hdma_spi_tx) != HAL_OK){Error_Handler();}hdma_spi_rx.Instance = DMA_Channel1;hdma_spi_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;hdma_spi_rx.Init.DestInc = DMA_DINC_ENABLE;hdma_spi_rx.Init.SrcInc = DMA_SINC_DISABLE;hdma_spi_rx.Init.DataAlignment = DMA_DATAALIGN_WORD;hdma_spi_rx.Init.Mode = DMA_MODE_NORMAL_SINGLE;hdma_spi_rx.Init.RequestSourceSel = DMA_REQUEST_SOURCE_SPI_RX;__HAL_LINKDMA(hspi, hdmarx, hdma_spi_rx);if (HAL_DMA_Init(&hdma_spi_rx) != HAL_OK){Error_Handler();}HAL_NVIC_SetPriority(SPI_LS_IRQn, 1);HAL_NVIC_EnableIRQ(SPI_LS_IRQn);
}void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{__HAL_RCC_SPI_CLK_DISABLE();HAL_GPIO_DeInit(GPIOB, GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5);
}

中断相关

在wm_it.c中

extern SPI_HandleTypeDef hspi;
extern DMA_HandleTypeDef hdma_spi_tx;
extern DMA_HandleTypeDef hdma_spi_rx;__attribute__((isr)) void SPI_LS_IRQHandler(void)
{HAL_SPI_IRQHandler(&hspi);
}__attribute__((isr)) void DMA_Channel0_IRQHandler(void)
{HAL_DMA_IRQHandler(&hdma_spi_tx);
}__attribute__((isr)) void DMA_Channel1_IRQHandler(void)
{HAL_DMA_IRQHandler(&hdma_spi_rx);
}

使用

	DMA_Init();SPI_Init();__HAL_SPI_SET_CS_LOW(&hspi);HAL_SPI_Transmit_DMA(&hspi, 数据首地址, 数据长度);__HAL_SPI_SET_CS_LOW(&hspi);HAL_SPI_Receive_DMA(&hspi, 缓冲区首地址, 数据长度);

注意事项

DataAlignment

       在WM_SDK_W806_v0.6.0中，DMA的数据对齐方式DataAlignment和STM32的效果完全相反，不知道是否是有意为之：
       所传数据为

当hdma_spi_tx.Init.DataAlignment = DMA_DATAALIGN_WORD时

波形正确

使用硬件I2C+DMA驱动相同的屏幕，在STM32中则为

若改为hdma_spi_tx.Init.DataAlignment = DMA_DATAALIGN_BYTE;

则波形错误

Direction

在WM_SDK_W806_v0.6.0中，外设到内存的宏和内存到外设的宏是一样的，有点奇怪

在STM32中则是不一样的：

测试

这里的测试程序见【0.96寸 OLED屏实现1500Fps的帧率】STM32 软件、硬件SPI、I2C驱动总结

main.c

#include <stdio.h>
#include "wm_hal.h"
#include "oled.h"SPI_HandleTypeDef hspi;
DMA_HandleTypeDef hdma_spi_tx;void Error_Handler(void);
static void SPI_Init(void);
static void GPIO_Init(void);
static void DMA_Init(void);uint16_t FPS = 0, FPS_Count = 0;int main(void)
{SystemClock_Config(CPU_CLK_240M);GPIO_Init();DMA_Init();SPI_Init();printf("enter main\r\n");uint8_t i;OLED_Init();OLED_Clear();OLED_Display_On();	     OLED_ShowString(0, 0, "   W806  OLED", 16, 0);OLED_ShowString(0, 2, "   2022-01-25", 6, 0);for(i = 0; i < 7; ++i)OLED_ShowChinese(8 + 16 * i, 6, i, 1);OLED_Refresh_Gram();while (1){++FPS_Count;OLED_ShowString(0, 4, "FPS: ", 16, 0); OLED_ShowNum(32, 4, FPS, 7, 16, 0);OLED_Refresh_Gram();}
}static void SPI_Init(void)
{hspi.Instance = SPI;hspi.Init.Mode = SPI_MODE_MASTER;hspi.Init.CLKPolarity = SPI_POLARITY_HIGH;hspi.Init.CLKPhase = SPI_PHASE_2EDGE;hspi.Init.NSS = SPI_NSS_SOFT;hspi.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;hspi.Init.FirstByte = SPI_LITTLEENDIAN;if (HAL_SPI_Init(&hspi) != HAL_OK){Error_Handler();}
}static void GPIO_Init(void)
{GPIO_InitTypeDef GPIO_InitStruct = {0};__HAL_RCC_GPIO_CLK_ENABLE();GPIO_InitStruct.Pin = SSD1306_RES_PIN;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;GPIO_InitStruct.Pull = GPIO_NOPULL;HAL_GPIO_Init(SSD1306_RES_PORT, &GPIO_InitStruct);GPIO_InitStruct.Pin = SSD1306_DC_PIN;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;GPIO_InitStruct.Pull = GPIO_NOPULL;HAL_GPIO_Init(SSD1306_DC_PORT, &GPIO_InitStruct);
}static void DMA_Init(void)
{__HAL_RCC_DMA_CLK_ENABLE();HAL_NVIC_SetPriority(DMA_Channel0_IRQn, 0);HAL_NVIC_EnableIRQ(DMA_Channel0_IRQn);
}void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
{}void Error_Handler(void)
{while (1){}
}void assert_failed(uint8_t *file, uint32_t line)
{printf("Wrong parameters value: file %s on line %d\r\n", file, line);
}

wm_hal_msp.c

#include "wm_hal.h"
#include "oled.h"extern DMA_HandleTypeDef hdma_spi_tx;void Error_Handler(void);void HAL_MspInit(void)
{}void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{__HAL_RCC_SPI_CLK_ENABLE();__HAL_AFIO_REMAP_SPI_CS(SSD1306_CS_PORT, SSD1306_CS_PIN);__HAL_AFIO_REMAP_SPI_CLK(SSD1306_SCK_PORT, SSD1306_SCK_PIN);__HAL_AFIO_REMAP_SPI_MOSI(SSD1306_MOSI_PORT, SSD1306_MOSI_PIN);hdma_spi_tx.Instance = DMA_Channel0;hdma_spi_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;hdma_spi_tx.Init.DestInc = DMA_DINC_DISABLE;hdma_spi_tx.Init.SrcInc = DMA_SINC_ENABLE;//	hdma_spi_tx.Init.DataAlignment = DMA_DATAALIGN_BYTE;hdma_spi_tx.Init.DataAlignment = DMA_DATAALIGN_WORD;hdma_spi_tx.Init.Mode = DMA_MODE_NORMAL_SINGLE;hdma_spi_tx.Init.RequestSourceSel = DMA_REQUEST_SOURCE_SPI_TX;__HAL_LINKDMA(hspi, hdmatx, hdma_spi_tx);if (HAL_DMA_Init(&hdma_spi_tx) != HAL_OK){Error_Handler();}HAL_NVIC_SetPriority(SPI_LS_IRQn, 1);HAL_NVIC_EnableIRQ(SPI_LS_IRQn);
}void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{__HAL_RCC_SPI_CLK_DISABLE();HAL_GPIO_DeInit(SSD1306_CS_PORT, SSD1306_CS_PIN);HAL_GPIO_DeInit(SSD1306_SCK_PORT, SSD1306_SCK_PIN);HAL_GPIO_DeInit(SSD1306_MOSI_PORT, SSD1306_MOSI_PIN);
}

wm_it.c

#include "wm_hal.h"extern uint16_t FPS, FPS_Count;extern SPI_HandleTypeDef hspi;
extern DMA_HandleTypeDef hdma_spi_tx;#define readl(addr) ({unsigned int __v = (*(volatile unsigned int *) (addr)); __v;})
__attribute__((isr)) void CORET_IRQHandler(void)
{static uint16_t ms_Count = 0;readl(0xE000E010);HAL_IncTick();if(++ms_Count >= 1000){ms_Count = 0;FPS = FPS_Count;FPS_Count = 0;}
}__attribute__((isr)) void SPI_LS_IRQHandler(void)
{HAL_SPI_IRQHandler(&hspi);
}__attribute__((isr)) void DMA_Channel0_IRQHandler(void)
{HAL_DMA_IRQHandler(&hdma_spi_tx);
}

其他改动

实验现象