模拟iic和硬件iic代码举例
时间: 2024-10-17 18:02:05 浏览: 30
模拟IIC (Inter-Integrated Circuit) 需要在软件层面实现一种类似于硬件IIC通信的方式,通常在嵌入式系统或者微控制器中,如Arduino或Python的MicroPython等平台上。硬件IIC是一种串行通信协议,而软件模拟则是通过编写程序来仿照其数据线操作、时序控制等功能。
以下是一个简单的模拟IIC通信的Python示例(使用`pynmea2`库模拟I2C通信),假设我们有一个设备ID(0x76)和我们要发送的数据:
```python
import smbus
from pynmea2 import NMEA
# 创建模拟的I2C对象
mock_i2c = MockI2CMock()
# 设备地址和数据
device_address = 0x76
data = [0x01, 0x02, 0x03]
# 模拟I2C读写
def mock_write(address, data):
print(f"Writing to {hex(address)}: {data}")
def mock_read(address, count):
return [0x42] * count # 返回固定值作为模拟
mock_i2c.write = mock_write
mock_i2c.read = mock_read
# 模拟发送数据
mock_i2c.writeto(device_address, bytearray(data))
# 模拟读取数据(这里假设只读取一个字节)
response = mock_i2c.readfrom_mem(device_address, 0, 1)
print(f"Received: {hex(response[0])}")
class MockI2CMock:
def __init__(self):
self.i2c = smbus.SMBus(1) # 假设模拟I2C总线1
def writeto(self, address, data):
pass # 实际上不做任何写操作
def readfrom_mem(self, address, mem_addr, length):
return []
#
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