各模块测试代码

I2C.py

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+from maix import i2c, pinmap, time
+
+# 配置 I2C1 引脚（请根据实际连接修改）
+pinmap.set_pin_function("P18", "I2C1_SCL")
+pinmap.set_pin_function("P21", "I2C1_SDA")
+
+bus = i2c.I2C(1, i2c.Mode.MASTER)
+
+INA226_ADDR = 0x40
+
+# 寄存器定义
+REG_CONFIGURATION = 0x00
+REG_BUS_VOLTAGE = 0x02
+REG_CALIBRATION = 0x05
+
+# 校准值（不读取电流/功率时也可以省略）
+CALIBRATION_VALUE = 0x1400
+
+def write_register(reg, value):
+    data = [(value >> 8) & 0xFF, value & 0xFF]
+    bus.writeto_mem(INA226_ADDR, reg, bytes(data))
+
+def read_register(reg):
+    data = bus.readfrom_mem(INA226_ADDR, reg, 2)
+    return (data[0] << 8) | data[1]
+
+def init_ina226():
+    write_register(REG_CONFIGURATION, 0x4527)
+    write_register(REG_CALIBRATION, CALIBRATION_VALUE)
+
+def get_bus_voltage():
+    raw = read_register(REG_BUS_VOLTAGE)
+    return raw * 1.25 / 1000  # 单位 V
+
+def voltage_to_percent(voltage):
+    if voltage >= 4.20:
+        return 100
+    elif voltage >= 4.15:
+        return 95
+    elif voltage >= 4.10:
+        return 90
+    elif voltage >= 4.05:
+        return 85
+    elif voltage >= 4.00:
+        return 80
+    elif voltage >= 3.95:
+        return 75
+    elif voltage >= 3.90:
+        return 70
+    elif voltage >= 3.85:
+        return 65
+    elif voltage >= 3.80:
+        return 60
+    elif voltage >= 3.75:
+        return 55
+    elif voltage >= 3.70:
+        return 50
+    elif voltage >= 3.65:
+        return 45
+    elif voltage >= 3.60:
+        return 40
+    elif voltage >= 3.55:
+        return 35
+    elif voltage >= 3.50:
+        return 30
+    elif voltage >= 3.45:
+        return 25
+    elif voltage >= 3.40:
+        return 20
+    elif voltage >= 3.35:
+        return 15
+    elif voltage >= 3.30:
+        return 10
+    elif voltage >= 3.20:
+        return 5
+    else:
+        return 0
+
+# 初始化 INA226
+init_ina226()
+
+# 主循环，只显示电量百分比
+while True:
+    voltage = get_bus_voltage()
+    battery_percent = voltage_to_percent(voltage)
+    print(f"当前电压: {voltage:.3f} V")
+    print(f"估算电池电量: {battery_percent} %\n")
+    time.sleep(2000)