WebMar 14, 2024 · 5. 编写代码以读取AHT20传感器数据。您可以使用C或Python等语言编写代码来读取AHT20传感器的温度和湿度数据。在C语言中,您需要使用I2C API来访问I2C总线。在Python中,您可以使用Python的smbus库来访问I2C总线。 这些步骤应该能够让您在imx6ull开发板上使用AHT20传感器。 Websmbus2 — smbus2 0.4.2 documentation class smbus2.SMBus (bus=None, force=False) ¶ block_process_call (i2c_addr, register, data, force=None) ¶ Executes a SMBus Block Process Call, sending a variable-size data block and receiving another variable-size response close () ¶ Close the i2c connection. enable_pec (enable=True) ¶
Raspberry as an I2C SLAVE - Raspberry Pi Stack Exchange
Webpython-smbus, pysmbus, and smbus2 are all front ends for the Linux kernel’s I2C/SMBus subsystem. The force parameter tells Linux to reuse a slave device’s address, even if that … Web#!/usr/bin/python import smbus import time bus = smbus.SMBus(1) address = 0x2a while True: data = "" for i in range(0, 5): data += chr(bus.read_byte(address)); print data … books about 5 senses
python - How do I read a byte from a Slave I2C Device while …
WebJun 6, 2024 · Just set slave mode and the FIFO is automatically filled when data is written to the slave address. The problem with the send side is that you don't seem to be able to pre-fill the output buffer. It's counted as an error if the output buffer has contents when the read request arrives. I did attempt to use DMA to fill the output buffer. WebIn order to enable the Python to talk to the I2C device you have to install the module called SMBus (System Management Bus). This module enables the user to write the code in … Webioctl(file, I2C_SMBUS, struct i2c_smbus_ioctl_data *args) If possible, use the provided i2c_smbus_* methods described below instead of issuing direct ioctls. You can do plain I2C transactions by using read(2) and write(2) calls. You do not need to pass the address byte; instead, set it through ioctl I2C_SLAVE before you try to access the device. godzilla vs kong battleship scene