https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=STM32_HAL_API 2026-06-07T20:01:25Z Revision history for this page on the wiki MediaWiki 1.37.2 https://w.electrodragon.com/w/index.php?title=STM32_HAL_API&diff=30129&oldid=prev 2021-03-08T16:30:16Z

<p><span dir="auto"><span class="autocomment">Example 2</span></span></p> <p><b>New page</b></p><div>== GPIO ==<br /> * HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_2);<br /> <br /> <br /> * HAL_GPIO_WritePin(GPIOA, GPIO_PIN_3, GPIO_PIN_RESET);<br /> * HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_3);<br /> <br /> <br /> == Delay ==<br /> * HAL_Delay(100);<br /> <br /> == I2C ==<br /> * HAL_I2C_Mem_Write<br /> * HAL_I2C_Mem_Read<br /> <br /> <br /> HAL_I2C_Mem_Write(&amp;hbus_i2c1, DevAddr, Reg, I2C_MEMADD_SIZE_8BIT, pData, Length, BUS_I2C1_POLL_TIMEOUT)<br /> <br /> * I2C_MEMADD_SIZE_8BIT 固定方式<br /> * BUS_I2C1_POLL_TIMEOUT = 0x1000U<br /> * uint8_t * const pICRef<br /> * pICRef Pointeron a uint8_t used to return the ST25DV ID.<br /> <br /> <br /> * HAL_I2C_Mem_Read(&amp;I2C2, 0x0017, Reg, I2C_MEMADD_SIZE_8BIT, pData, Length, 0x1000U) <br /> === Example 2 ===<br /> #define ADDR_24LCxx_Read 0xA1<br /> #define BufferSize 0x100&lt;br&gt;<br /> uint8_t ReadBuffer[BufferSize];<br /> <br /> <br /> HAL_I2C_Mem_Read(&amp;hi2c1, ADDR_24LCxx_Read, 0, I2C_MEMADD_SIZE_8BIT,ReadBuffer,BufferSize, 0x10);<br /> * 第一个参数为I2C操作句柄。<br /> * 第二个参数为E2PROM的写操作设备地址。<br /> * 第三个参数为内存地址，<br /> * 第二个参数为内存地址长度，E2PROM内存长度为8bit<br /> * 第四个参数为数据缓存的起始地址，<br /> * 第五个参数为传输数据的大小，<br /> * 第六个参数为操作超时时间。<br /> <br /> <br /> <br /> HAL_StatusTypeDef HAL_I2C_Mem_Read ( I2C_HandleTypeDef * hi2c, <br /> uint16_t DevAddress, <br /> uint16_t MemAddress, <br /> uint16_t MemAddSize, <br /> uint8_t * pData, <br /> uint16_t Size, <br /> uint32_t Timeout <br /> ) <br /> Read an amount of data in blocking mode from a specific memory address. <br /> Parameters:&lt;br&gt;<br /> * hi2c Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C. <br /> * DevAddress Target device address: The device 7 bits address value in datasheet must be shifted to the left before calling the interface <br /> * MemAddress Internal memory address <br /> * MemAddSize Size of internal memory address <br /> * pData Pointer to data buffer <br /> * Size Amount of data to be sent <br /> * Timeout Timeout duration <br /> <br /> AT24C02<br /> * HAL_I2C_Mem_Write(&amp;hi2c1, 0XA0,1,I2C_MEMADD_SIZE_8BIT,sbuf,1,0xff);<br /> * HAL_Delay(5);<br /> * HAL_I2C_Mem_Read(&amp;hi2c1, 0xA0, 1, I2C_MEMADD_SIZE_8BIT, rbuf, 1,0xfff); <br /> * HAL_Delay(1000);<br /> <br /> HAL_I2C_Mem_Read(<br /> * I2C_HandleTypeDef *hi2c, // 使用的 I2C 模块的 Handle 的指针<br /> * uint16_t DevAddress, // I2C 器件的地址，这里是 24C02 的地址 0xA0<br /> * uint16_t MemAddress, // 存储器内部地址<br /> * uint16_t MemAddSize, // 存储器内部地址位数 8BIT or 16BIT ?<br /> * uint8_t *pData, // 接收数据缓冲区指针<br /> * uint16_t Size, // 接收数据长度=<br /> * uint32_t Timeout // 超时设置<br /> );<br /> [[category: STM32 SDK]]</div>

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