151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/****************************************************************************
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* boards/risc-v/esp32h2/common/src/esp_board_rmt.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <stdio.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/rmt/rmtchar.h>
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#ifdef CONFIG_WS2812_NON_SPI_DRIVER
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#include <nuttx/leds/ws2812.h>
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#include "espressif/esp_ws2812.h"
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#endif
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#include "espressif/esp_rmt.h"
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#ifdef CONFIG_ESP_RMT
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_rmt_rxinitialize
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*
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* Description:
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* Initialize the RMT peripheral and register an RX device.
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*
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* Input Parameters:
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* ch - The RMT's channel that will be used
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* pin - The pin used for the RX channel
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int board_rmt_rxinitialize(int ch, int pin)
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{
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int ret;
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struct rmt_dev_s *rmt = esp_rmt_rx_init(ch, pin);
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ret = rmtchar_register(rmt);
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if (ret < 0)
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{
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rmterr("ERROR: rmtchar_register failed: %d\n", ret);
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return ret;
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}
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return ret;
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}
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/****************************************************************************
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* Name: board_rmt_txinitialize
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*
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* Description:
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* Initialize the RMT peripheral and register an TX device.
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*
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* Input Parameters:
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* ch - The RMT's channel that will be used
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* pin - The pin used for the TX channel
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int board_rmt_txinitialize(int ch, int pin)
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{
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int ret;
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struct rmt_dev_s *rmt;
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#ifdef CONFIG_WS2812_NON_SPI_DRIVER
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struct ws2812_dev_s *led;
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#endif
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rmt = esp_rmt_tx_init(ch, pin);
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if (rmt == NULL)
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{
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rmterr("ERROR: esp_rmt_tx_init failed\n");
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return -ENODEV;
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}
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ret = rmtchar_register(rmt);
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if (ret < 0)
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{
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rmterr("ERROR: rmtchar_register failed: %d\n", ret);
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return ret;
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}
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#ifdef CONFIG_WS2812_NON_SPI_DRIVER
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led = esp_ws2812_setup("/dev/leds0", rmt, CONFIG_WS2812_LED_COUNT, false);
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if (led == NULL)
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{
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rmterr("ERROR: esp_ws2812_setup failed\n");
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return -ENODEV;
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}
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#endif
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return ret;
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}
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#endif
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