// 相位校准
typedef struct {
    float phase_0deg_voltage;    // 0°对应电压
    float phase_90deg_voltage;   // 90°对应电压
    float phase_180deg_voltage;  // 180°对应电压
} phase_cal_data_t;

void phase_calibration(void) {
    phase_cal_data_t cal_data;
    
    // 0°校准 - 输入同相信号
    printf("请输入两路同相信号（0°相位差）\n");
    delay_ms(2000);
    cal_data.phase_0deg_voltage = read_phase_voltage();
    printf("0°校准电压: %.3fV\n", cal_data.phase_0deg_voltage);
    
    // 90°校准 - 输入正交信号
    printf("请输入90°相位差信号\n");
    delay_ms(2000);
    cal_data.phase_90deg_voltage = read_phase_voltage();
    printf("90°校准电压: %.3fV\n", cal_data.phase_90deg_voltage);
    
    // 180°校准 - 输入反相信号
    printf("请输入180°相位差信号\n"); 
    delay_ms(2000);
    cal_data.phase_180deg_voltage = read_phase_voltage();
    printf("180°校准电压: %.3fV\n", cal_data.phase_180deg_voltage);
    
    // 计算校准系数
    float scale = (cal_data.phase_180deg_voltage - cal_data.phase_0deg_voltage) / 180.0;
    printf("相位比例系数: %.4f V/°\n", scale);
    
    // 保存校准数据
    save_calibration_data(&cal_data);
}

// 温度补偿校准
void temperature_compensation(void) {
    float temp_voltage = read_temperature_voltage();
    float temperature = (temp_voltage - 0.5) / 0.01;  // 10mV/°C
    
    // 温度补偿系数
    const float PHASE_TEMP_COEFF = 0.5;  // °/°C
    const float GAIN_TEMP_COEFF = 0.1;   // dB/°C
    
    float temp_offset = (temperature - 25.0);
    float phase_temp_error = PHASE_TEMP_COEFF * temp_offset;
    float gain_temp_error = GAIN_TEMP_COEFF * temp_offset;
    
    printf("环境温度: %.1f°C\n", temperature);
    printf("相位温度误差: %.2f°\n", phase_temp_error);
    printf("增益温度误差: %.2fdB\n", gain_temp_error);
}