已经实验过,不开启调度器,I2C1能正常读取数据,一开启就返回错误HAL_ERROR!在线等帮忙,很急。I2C1配置如下: void MX_I2C1_Init(void) { hi2c1.Instance = I2C1; hi2c1.Init.Timing = 0x00501E6C; hi2c1.Init.OwnAddress1 = 0; hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE; hi2c1.Init.OwnAddress2 = 0; hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK; hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE; hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE; if (HAL_I2C_Init(&hi2c1) != HAL_OK) { Error_Handler(); } /** Configure Analogue filter */ if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK) { Error_Handler(); } /** Configure Digital filter */ if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK) { Error_Handler(); } } void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(i2cHandle->Instance==I2C1) { /* USER CODE BEGIN I2C1_MspInit 0 */ /* USER CODE END I2C1_MspInit 0 */ __HAL_RCC_GPIOB_CLK_ENABLE(); /* I2C1 clock enable */ __HAL_RCC_I2C1_CLK_ENABLE(); /**I2C1 GPIO Configuration PB8 ------> I2C1_SCL PB9 ------> I2C1_SDA */ GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9; GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF4_I2C1; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* USER CODE BEGIN I2C1_MspInit 1 */ /* USER CODE END I2C1_MspInit 1 */ } } void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle) { if(i2cHandle->Instance==I2C1) { /* USER CODE BEGIN I2C1_MspDeInit 0 */ /* USER CODE END I2C1_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_I2C1_CLK_DISABLE(); /**I2C1 GPIO Configuration PB8 ------> I2C1_SCL PB9 ------> I2C1_SDA */ HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8|GPIO_PIN_9); /* USER CODE BEGIN I2C1_MspDeInit 1 */ /* USER CODE END I2C1_MspDeInit 1 */ } } |
可以用示波器测试下I2C波形,网上有卖这种波形分析仪的,便宜挺好用的 |
楼主可以看一次是不是systicks中断没有对hal用到的计数器进行增加操作。 |
你覅uabsjhbds |
应该不是I2C本身配置方面的原因,很可能是RTOS的滴答中断影响I2C的通信时序了,进而导致通信失败。你在这方面检查下,让I2C通信时别让其它打断,或者开启I2C中断时保障它的足够优先级。 |
有可能是临界的问题,加一下互斥量在读写iic的位置 |
请问一下,我的nucleo板子连接usb线,找不到target,一直无法下载程序怎么回事呢?
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