i2c_memory_write(&hi2c2, I2C_MEM_ADDR_WIDIH_8, MAX30102_ADDR_WRITE, RES_OVERFLOW_COUNTER, &data, 1, 0xffffff); i2c_memory_write(&hi2c2, I2C_MEM_ADDR_WIDIH_8, MAX30102_ADDR_WRITE, RES_FIFO_READ_POINTER, &data, 1,
读当前地址CURRENT ADDRESS READ 只要发送器件地址就能读当前内存地址所指向的地址空间数据,最后的读数据可以不需要发送ACK 随机读RANDOM READ 需要发送器件地址,然后发送内存地址,之后再发送器件地址并且读取到数据,最后的读数据可以不需要发送ACK。 连续读SEQUENTIAL READ 可以从第一种和第二种读方式启动后,连续读取,但...
I am writing a general driver to handle the i2c writing/reading in memory in C. After several tests reading and writing it stopped working. Since then I only get 0xFF as value for the whole User memory blocks and also for the config sector. It does communicate, I can read the sessi...
hal_i2c_mem_read_dma原理 English: hal_i2c_mem_read_dma is a function used in embedded systems to perform a direct memory access (DMA) read operation on an I2C bus. The function leverages the I2C peripheral's DMA capabilities to efficiently transfer datafrom a specified memory address to a...
case 0x28: //发送完1字节数据:发送EEPROM中memory地址也会产生,发送后面的数据也会产生 if(0 == SendFlg) { if(u8SendLen <WRITELEN) { I2C_SendData(CW_I2C1,u8Senddata[u8SendLen++]); } else { u8SendLen = 0; Comm_flg = 1; SendFlg = 1; ...
memory address* @paramMemAddSize Size of internal memory address* @parampData Pointer to data buffer* @paramSize Amount of data to be sent* @paramTimeout Timeout duration* @retval HAL status*/HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress,uint16_t Mem...
memory[i]=0; end ///---启动信号检测--- always@(negedgesda) if(scl ==1) begin State=State+1; if(State==2'b11) disablewrite_to_eeprm; end ///---主状态机--- always@(posedgesda) if(scl ==1) stop_W_R; else begin casex(State) 2'b01: begin read_in...
问I2C返回繁忙或内存读取错误EN终于发现了问题所在。在使用STM使用C进行测试并研究Ada配置代码之后，我发现...
如下图,我不太清楚这个怎么翻译,但是可以感觉到他需要产生高压将数据写入到非易失内存(nonvolatile memory)中,这个过程需要占用一定的时间。 记住这个5ms,我们之后会再说,下面我们看另一个问题。 如果你去上网查EEPROM的教程,会发现大多是以24C02为例子写的,巧合吗?显然不是。我们知道IIC一次发送可以传8bit数据,而...
DMA(Direct Memory Access,直接内存访问)是一种能够在外设和内存之间直接进行数据传输的技术,它可以显著提高STM32微控制器的UART、SPI和I2C通信性能。在本文中,我们将探讨如何使用DMA优化STM32的UART、SPI和I2C通信,并提供相应的代码示例。 1. DMA在UART通信中的应用 UART通信是一种常用的串行通信协议,在微控制器和...