HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) 测试MLX90614时需要用到SMBus协议, 但是可以直接使用HAL的I2C读取 HAL_I2C_Mem_Read的第一次DevAddress为地址,7bit,...
HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) 我利用库函数对EEPROM的多字节读写做了实验如下: HAL_StatusTypeDef EEPROM_WriteData(uint16_t MemAddr,uint8_t *...
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); HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uin...
函数HAL_I2C_IsDeviceReady()用于检查I2C网络上一个设备是否做好了I2C通信准备,其函数原型如下: HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout); 其中,hi2c是I2C接口对象指针,DevAddress是从设备地址,Trials是尝试的...
HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout); 以上函数对指定地址器件的指定寄存器或内存地址按照指定的数据宽度在指定的时间范围内读取指定的数据长度到指定的数据缓...
void persistent_memory_i2c_eeprom::read_block(uint32_t offset, uint8_t * vals, uint32_t size) { HAL_StatusTypeDef res = HAL_I2C_Mem_Read(hi2c, DevAddress, mem_base_address + offset, I2C_MEMADD_SIZE_16BIT, vals, size, 100); HAL_Delay(1); } void persistent...
HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) 1. 2. 3. 4. 参数表 返回值 读写的实现 #define ADDR_AT24C02_Write 0xA0 ...
HAL_I2C_Mem_Read(&hi2c1, DS3231_ADDRESS, 0x00, 1, getArray, 7, 1000); 正如您所看到的,我刚刚获得了两个名为 set 和 get time 的函数,其中包含这些行。 但是,我想了解如何使用 HAL_StatusTypeDef 检查 I2C 线路上是否有任何错误。与 DigiKeys 在 youtube 上名为“STM32 和 Nucleo 入门第 2 部分...
HAL_StatusTypeDefHAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) Read an amount of data in non-blocking mode with Interrupt from a specific memory address. ...
这里需要注意,DMA传输也需要使能I2C中断,因为这里DMA负责的是芯片内部(内存中)数据的转移,和EEPROM之间通信还是靠传统的I2C通信 原先的代码用了阻塞式的HAL_I2C_Mem_Write,现在我们要换成非阻塞的HAL_I2C_Mem_Write_DMA,改动只在于少了Timeout参数,同时 HAL_I2C_Mem_Read也要改成HAL_I2C_Mem_Read_DMA ,现在的...