PicoSDK
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Outline
#include "hardware/interp.h"
#include "hardware/structs/sio.h"
#include "hardware/claim.h"
_claimed
interp_lane_bit(interp_hw_t *, uint)
interp_claim_lane(interp_hw_t *, uint)
interp_claim_lane_mask(interp_hw_t *, uint)
interp_unclaim_lane(interp_hw_t *, uint)
interp_lane_is_claimed(interp_hw_t *, uint)
interp_unclaim_lane_mask(interp_hw_t *, uint)
interp_save(interp_hw_t *, interp_hw_save_t *)
interp_restore(interp_hw_t *, interp_hw_save_t *)
Files
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SourceVuRaspberry Pi Pico SDK and ExamplesPicoSDKsrc/rp2_common/hardware_interp/interp.c
 
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/* * Copyright (c) 2020 Raspberry Pi (Trading) Ltd. * * SPDX-License-Identifier: BSD-3-Clause *//* ... */ #include "hardware/interp.h" #include "hardware/structs/sio.h" #include "hardware/claim.h" check_hw_size(interp_hw_t, SIO_INTERP1_ACCUM0_OFFSET - SIO_INTERP0_ACCUM0_OFFSET); check_hw_layout(sio_hw_t, interp, SIO_INTERP0_ACCUM0_OFFSET); static uint8_t _claimed; static inline uint interp_lane_bit(interp_hw_t * interp, uint lane) { return (interp_index(interp) << 1u) | lane; }{ ... } void interp_claim_lane(interp_hw_t *interp, uint lane) { valid_params_if(HARDWARE_INTERP, lane < 2); hw_claim_or_assert((uint8_t *) &_claimed, interp_lane_bit(interp, lane), "Lane is already claimed"); }{ ... } void interp_claim_lane_mask(interp_hw_t *interp, uint lane_mask) { valid_params_if(HARDWARE_INTERP, lane_mask && lane_mask <= 0x3); if (lane_mask & 1u) interp_claim_lane(interp, 0); if (lane_mask & 2u) interp_claim_lane(interp, 1); }{ ... } void interp_unclaim_lane(interp_hw_t *interp, uint lane) { valid_params_if(HARDWARE_INTERP, lane < 2); hw_claim_clear((uint8_t *) &_claimed, interp_lane_bit(interp, lane)); }{ ... } bool interp_lane_is_claimed(interp_hw_t *interp, uint lane) { valid_params_if(HARDWARE_INTERP, lane < 2); return hw_is_claimed((uint8_t *) &_claimed, interp_lane_bit(interp, lane)); }{ ... } void interp_unclaim_lane_mask(interp_hw_t *interp, uint lane_mask) { valid_params_if(HARDWARE_INTERP, lane_mask <= 0x3); if (lane_mask & 1u) interp_unclaim_lane(interp, 0); if (lane_mask & 2u) interp_unclaim_lane(interp, 1); }{ ... } void interp_save(interp_hw_t *interp, interp_hw_save_t *saver) { saver->accum[0] = interp->accum[0]; saver->accum[1] = interp->accum[1]; saver->base[0] = interp->base[0]; saver->base[1] = interp->base[1]; saver->base[2] = interp->base[2]; saver->ctrl[0] = interp->ctrl[0]; saver->ctrl[1] = interp->ctrl[1]; }{ ... } void interp_restore(interp_hw_t *interp, interp_hw_save_t *saver) { interp->accum[0] = saver->accum[0]; interp->accum[1] = saver->accum[1]; interp->base[0] = saver->base[0]; interp->base[1] = saver->base[1]; interp->base[2] = saver->base[2]; interp->ctrl[0] = saver->ctrl[0]; interp->ctrl[1] = saver->ctrl[1]; }{ ... }
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