nuttx/boards/risc-v/esp32h2/common/src/esp_board_rmt.c

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