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https://github.com/espressif/esp-idf.git
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63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "hal/rmt_hal.h"
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#include "hal/rmt_ll.h"
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#include "soc/soc_caps.h"
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void rmt_hal_init(rmt_hal_context_t *hal)
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{
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hal->regs = &RMT;
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hal->mem = &RMTMEM;
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}
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void rmt_hal_tx_channel_reset(rmt_hal_context_t *hal, uint32_t channel)
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{
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rmt_ll_tx_reset_pointer(hal->regs, channel);
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rmt_ll_tx_reset_loop(hal->regs, channel);
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rmt_ll_enable_tx_err_interrupt(hal->regs, channel, false);
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rmt_ll_enable_tx_end_interrupt(hal->regs, channel, false);
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rmt_ll_enable_tx_thres_interrupt(hal->regs, channel, false);
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rmt_ll_clear_tx_err_interrupt(hal->regs, channel);
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rmt_ll_clear_tx_end_interrupt(hal->regs, channel);
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rmt_ll_clear_tx_thres_interrupt(hal->regs, channel);
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}
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void rmt_hal_rx_channel_reset(rmt_hal_context_t *hal, uint32_t channel)
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{
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rmt_ll_rx_reset_pointer(hal->regs, channel);
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rmt_ll_enable_rx_err_interrupt(hal->regs, channel, false);
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rmt_ll_enable_rx_end_interrupt(hal->regs, channel, false);
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rmt_ll_clear_rx_err_interrupt(hal->regs, channel);
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rmt_ll_clear_rx_end_interrupt(hal->regs, channel);
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}
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void rmt_hal_tx_set_channel_clock(rmt_hal_context_t *hal, uint32_t channel, uint32_t base_clk_hz, uint32_t counter_clk_hz)
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{
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rmt_ll_tx_reset_channel_clock_div(hal->regs, channel);
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uint32_t counter_div = (base_clk_hz + counter_clk_hz / 2) / counter_clk_hz;
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rmt_ll_tx_set_channel_clock_div(hal->regs, channel, counter_div);
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}
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void rmt_hal_set_carrier_clock(rmt_hal_context_t *hal, uint32_t channel, uint32_t base_clk_hz, uint32_t carrier_clk_hz, float carrier_clk_duty)
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{
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uint32_t carrier_div = (base_clk_hz + carrier_clk_hz / 2) / carrier_clk_hz;
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uint32_t div_high = (uint32_t)(carrier_div * carrier_clk_duty);
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uint32_t div_low = carrier_div - div_high;
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rmt_ll_tx_set_carrier_high_low_ticks(hal->regs, channel, div_high, div_low);
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}
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void rmt_hal_set_rx_filter_thres(rmt_hal_context_t *hal, uint32_t channel, uint32_t base_clk_hz, uint32_t thres_us)
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{
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uint32_t thres = (uint32_t)(base_clk_hz / 1e6 * thres_us);
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rmt_ll_rx_set_filter_thres(hal->regs, channel, thres);
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}
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void rmt_hal_set_rx_idle_thres(rmt_hal_context_t *hal, uint32_t channel, uint32_t base_clk_hz, uint32_t thres_us)
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{
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uint32_t thres = (uint32_t)(base_clk_hz / 1e6 * thres_us);
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rmt_ll_rx_set_idle_thres(hal->regs, channel, thres);
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}
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