62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
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import struct
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from select import select
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def int16_to_float(high, low):
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# 将两个 16 位整数合并为一个 32 位整数
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combined = (high << 16) | (low & 0xFFFF)
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# 将 32 位整数解释为浮点数
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float_value = struct.unpack('>f', struct.pack('>I', combined))[0]
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return float_value
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def float_to_int16(value):
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# 将浮点数打包为 32 位整数字节
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packed = struct.pack('>f', value)
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# 解包成 32 位整数
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combined = struct.unpack('>I', packed)[0]
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# 分离出高 16 位和低 16 位
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high = (combined >> 16) & 0xFFFF
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low = combined & 0xFFFF
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return high, low
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def int16_to_float_n(vals):
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# 给出的vals是一个数的列表，其长度必须是2的整数倍
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_val_num = int(len(vals) / 2)
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_float_vals = []
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for i in range(_val_num):
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_float_vals.append(int16_to_float(vals[i * 2], vals[i * 2 + 1]))
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return _float_vals
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def float_to_int16_n(vals):
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"""
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将多个float类型数转换为一个int16类型数的list
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:param vals: float类型数的list
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:return: int16类型数的list
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"""
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_val_num = len(vals)
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_int_vals = []
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for i in range(_val_num):
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_int_vals = _int_vals + [*float_to_int16(vals[i])]
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return _int_vals
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if __name__ == '__main__':
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# 示例
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high = 0x3f80 # 16 位高位
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low = 0x0000 # 16 位低位
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result = int16_to_float(high, low)
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print(result)
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high, low = float_to_int16(result)
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print(high, low)
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float_val_1 = 0.1
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print(float_to_int16(float_val_1))
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float_vals = [0.1, 0.2]
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print(float_to_int16_n(float_vals))
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