/** @brief I2C_WriteByte,向OLED寄存器地址写一个byte的数据 @param addr:寄存器地址 data:要写入的数据 @retval 无 */ void I2C_WriteByte(uint8_t addr, uint8_t data) { // while (I2C_GetFlagStatus(I2CX, I2C_FLAG_BUSY)); // I2C_GenerateSTART(I2CX, ENABLE);//开启I2C1 // while (!I...
__HAL_RCC_I2C1_CLK_ENABLE(); hdma_i2c1_rx.Instance = DMA1_Stream0; hdma_i2c1_rx.Init.Channel = DMA_CHANNEL_1; hdma_i2c1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; hdma_i2c1_rx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_i2c1_rx.Init.MemInc = DMA_MINC_ENABLE; hdma_i2c1_...
HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) 参数说明如下: * hi2c:I2C句柄 * DevAddress:I2C设备地址 * MemAddress:要写入的内存地址 * MemAddSize:内存地址...
HAL_I2C_Mem_Write()函数位于stm32fxx_hal_i2c.c文件的2432行,源代码对该函数的解释如下图 HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout ); 该函数是通过阻塞...
HAL_I2C_Mem_Write 函数的返回值是一个 HAL_StatusTypeDef 枚举值,用于表示写入操作的结果。常见的返回值包括 HAL_OK(成功)、HAL_ERROR(错误)、HAL_BUSY(总线繁忙)和 HAL_TIMEOUT(超时)。调用者应根据这些返回值来判断写入操作是否成功,并采取相应的处理措施。
下面就来对hal_i2c_mem_write_it函数第一字节进行详细解析。 一、函数定义 hal_i2c_mem_write_it函数定义如下: HAL_StatusTypeDef hal_i2c_mem_write_it(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) 其中,参数含义如下...
Hi, I am working on a project using the STM32H730 with the M24C64 I2C EEPROM chip. In my project I am using the HAL_I2C_Mem_Write functions to load
阻塞版本 (HAL_I2C_Mem_Write) 运行良好，现在我正在尝试使用 HAL_I2C_Mem_Write_DMA。以下是配置工具...
HAL_NVIC_SetPriority(DMA1_Stream6_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA1_Stream6_IRQn);}void main(void){ uint8_t error; uint8_t data[3]; data[0] = 0x47; error = HAL_I2C_Mem_Write(&hi2c1, 0x82, 0x3f, 1, data, 1,100); //succeed error = LT_I2C_...
HAL_StatusTypeDef status = HAL_I2C_Mem_Read(self->i2c, i2c_addr, mem_addr, I2C_MEMADD_SIZE_16BIT, bufinfo.buf, bufinfo.len, vals[3].u_int); And it worked! At least, it did after about 90 minutes or so when I finally figured out that I needed to add a line for Q(mem_rea...