Cuatro DFSDM1 mic demodulation #2077
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robbederks
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November 14, 2024 15:47
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robbederks
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Nov 14, 2024
| register_set(&SAI4_Block_A->SLOTR, (0b11 << SAI_xSLOTR_SLOTEN_Pos) | (1U << SAI_xSLOTR_NBSLOT_Pos) | (0b01 << SAI_xSLOTR_SLOTSZ_Pos), 0xFFFF0FDFU); // NBSLOT definition is vague | ||
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| // init DFSDM for PDM mic | ||
| DFSDM1_Channel0->CHCFGR1 = (76U << DFSDM_CHCFGR1_CKOUTDIV_Pos) | DFSDM_CHCFGR1_CHEN; // CH0 controls the clock |
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TODO: use register methods here
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we should probably also turn off the mic if the SAI isn't being clocked |
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need to enable
SEC_I2Sfor sound input:/usr/comma/sound/tinymix set "MultiMedia1 Mixer SEC_MI2S_TX" 1