STM32F103C8T6 硬件iic 及spi驱动

硬件IIC和SPI是STM32F103C8T6最常用的通信接口之一，可以用于与其他芯片或设备进行数据交换。以下是STM32F103C8T6的硬件IIC和SPI驱动的基本介绍：

硬件IIC驱动：

STM32F103C8T6的硬件IIC驱动需要使用I2C库函数，包括GPIO初始化、I2C初始化、I2C读写操作等。代码示例：

1. GPIO初始化：

/* Configure I2C1 pins: PB6->SCL and PB7->SDA */
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

2. I2C初始化：

/* I2C1 clock enable */
__HAL_RCC_I2C1_CLK_ENABLE();

hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}

3. I2C读写操作：

/* Write data to the device */
HAL_I2C_Mem_Write(&hi2c1, DevAddr, MemAddr, MemAddrSize, pData, Size, Timeout);

/* Read data from the device */
HAL_I2C_Mem_Read(&hi2c1, DevAddr, MemAddr, MemAddrSize, pData, Size, Timeout);

硬件SPI驱动：

STM32F103C8T6的硬件SPI驱动需要使用SPI库函数，包括GPIO初始化、SPI初始化、SPI读写操作等。代码示例：

1. GPIO初始化：

/* SPI1 GPIO Configuration
PB3 ------> SPI1_SCK
PB4 ------> SPI1_MISO
PB5 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

2. SPI初始化：

/* SPI1 parameter configuration */
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 0;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}

3. SPI读写操作：

/* Write data to the device */
HAL_SPI_Transmit(&hspi1, pData, Size, Timeout);

/* Read data from the device */
HAL_SPI_Receive(&hspi1, pData, Size, Timeout);

以上是STM32F103C8T6的硬件IIC和SPI驱动的基本介绍，只是简单的示例，实际应用可能需要根据具体情况进行修改和优化。