使用I2C 接口从外部传感器(BH1750环境光传感器(GY-30模块))读取温度数据:esp-idf/examples/peripherals/i2c/i2c_self_test 使用I2C 接口快速开发一个光照传感器(BH1750)控制 LED 灯的应用程序:esp-iot-solution/examples/sensors/sensor_control_led 使用I2C 接口从外部传感器(MPU9250)陀螺仪加速度计中获取加速度、角...
I'm working on a very large project with ESP32-WROOM-32UE, which makes intense use of the UART, I2C, SPI and TIMERS peripherals. I've been struggling with a very sporadic bug, in which an I2C reading returns an inconsistent value (for example, should read zero from an external...
inti2c_slave_port=I2C_SLAVE_NUM;i2c_config_t conf_slave={.sda_io_num=I2C_SLAVE_SDA_IO,// select GPIO specific to your project.sda_pullup_en=GPIO_PULLUP_ENABLE,.scl_io_num=I2C_SLAVE_SCL_IO,// select GPIO specific to your project.scl_pullup_en=GPIO_PULLUP_ENABLE,.mode=I2C_MODE_...
(I2C_PORT, ZEDF9P_ADDR, ®, 1, buffer, 2, I2C_TIMEOUT); // buffer[0] now contains the value in register 0xfd and buffer[1] the value in register 0xfe, // the number of available bytes is big endian encoded uint16_t available = (buffer[0] << 8) | buffer[1]; if (...
I (9207) driver-codec: i2c_read cnt = 0, error = -1 代码如下: #define I2C0_MASTER_SCL_IO 18 /*!< GPIO number used for I2C master clock */ #define I2C0_MASTER_SDA_IO 17 /*!< GPIO number used for I2C master data */
(i2c_master_read_byte):i2c null address error E (2566) i2c: C:/msys32/home/dmitr/esp/esp-idf/components/driver/i2c.c:1077 (i2c_master_read_byte):i2c null address error I (3576) BTDM_INIT: BT controller compile version [3828e65] I (3576) system_api: Base MAC address is not set...
< I2C ack value */ #define NACK_VAL 0x1 /*!< I2C nack value */ 1. 2. 3. 4. 接下来是IIC引脚的设置,ESP32由两个IIC控制器,分别对应不同的引脚,我们设置为如下,可以通过定义来选择使用哪一个IIC控制器: #if 1 #define IIC_CTRL_NUM I2C_NUM_1 /*!< I2C port number */...
(); I2C0_init(); ATH10_init(); BaseType_t xReturn = pdPASS; // //LED1任务程序 // xReturn = xTaskCreate(Led_Task_Function, //任务函数 // "LedTask", //任务名称 // 2048, //任务栈大小 // NULL, //任务入口函数参数 // 2, //任务优先级 // &Led_Task_Handle)...
"""frommicropythonimportconstimportutimefromdriverimportI2C''' # sht3x commands definations # read serial number: CMD_READ_SERIALNBR 0x3780 # read status register: CMD_READ_STATUS 0xF32D # clear status register: CMD_CLEAR_STATUS 0x3041 ...
Now suppose we want to display a number on the LCD. As I mentioned, we need to change it to the characters and then display it. The code for the same is shown belowchar buffer[10]; float num = 1234; void app_main(void) { ESP_ERROR_CHECK(i2c_master_init()); ESP_LOGI(TAG, "...