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/AliOS-Things-master/hardware/board/haaseduk1/drivers/sensor/
A D	drv_baro_qst_qmp6988.c	193 QMP6988_S64_t wk1, wk2; in qmp6988_convTx_02e() local 196 wk1 = ((QMP6988_S64_t)ik->a1 * (QMP6988_S64_t)dt); // 31Q23+24-1=54 (54Q23) in qmp6988_convTx_02e() 199 wk2 = ((wk1 + wk2) / 32767) >> 19; // 54,52->55Q23 (20Q04) in qmp6988_convTx_02e() 207 QMP6988_S64_t wk1, wk2, wk3; in qmp6988_get_pressure_02e() local 212 wk1 += wk2; // 43,49->50Q15 in qmp6988_get_pressure_02e() 222 wk1 += wk3 >> 14; // Q29 >> 14 -> Q15 in qmp6988_get_pressure_02e() 235 wk1 += wk3 >> 15; // Q30 >> 15 = Q15 in qmp6988_get_pressure_02e() 236 wk1 /= 32767L; in qmp6988_get_pressure_02e() 237 wk1 >>= 11; // Q15 >> 7 = Q4 in qmp6988_get_pressure_02e() 238 wk1 += ik->b00; // Q4 + 20Q4 in qmp6988_get_pressure_02e() [all …]

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