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/vendor/hisilicon/hispark_pegasus/demo/environment_demo/
H A Dapp_demo_mq2.c34 #define CAL_PPM (25) // 校准环境中PPM值 macro
73 g_r0 = rS / pow(CAL_PPM / X_CONSTANT, 1 / Y_CONSTANT); in Mq2PpmCalibration()

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