155 lines
4.4 KiB
C
155 lines
4.4 KiB
C
/****************************************************************************
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* boards/xtensa/esp32s3/common/src/esp32s3_board_tim.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 <sys/types.h>
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#include <debug.h>
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#ifdef CONFIG_ONESHOT
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#include <nuttx/timers/oneshot.h>
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#ifdef CONFIG_CPULOAD_ONESHOT
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#include <nuttx/clock.h>
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#endif
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#endif
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#include "esp32s3_board_tim.h"
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#include "esp32s3_tim.h"
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#include "esp32s3_tim_lowerhalf.h"
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#ifdef CONFIG_ONESHOT
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#include "esp32s3_oneshot.h"
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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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: config_oneshot_timer
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*
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* Description:
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* Configure the oneshot timer driver.
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*
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* Returned Value:
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* Zero (OK) is returned on success; A negated errno value is returned
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* to indicate the nature of any failure.
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*
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****************************************************************************/
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#ifdef CONFIG_ONESHOT
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static int config_oneshot_timer(int timer, uint16_t resolution)
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{
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int ret = OK;
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struct oneshot_lowerhalf_s *os_lower = NULL;
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os_lower = oneshot_initialize(timer, resolution);
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if (os_lower == NULL)
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{
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syslog(LOG_ERR, "Failed to initialize oneshot timer.\n");
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return -EBUSY;
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}
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#if defined(CONFIG_CPULOAD_ONESHOT)
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/* Configure the oneshot timer to support CPU load measurement */
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nxsched_oneshot_extclk(os_lower);
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#else
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ret = oneshot_register("/dev/oneshot", os_lower);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to register oneshot device: %d\n", ret);
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}
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#endif /* CONFIG_CPULOAD_ONESHOT */
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return ret;
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}
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#endif
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/****************************************************************************
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* Name: board_tim_init
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*
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* Description:
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* Configure the timer driver.
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*
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* Returned Value:
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* Zero (OK) is returned on success; A negated errno value is returned
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* to indicate the nature of any failure.
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*
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****************************************************************************/
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int board_tim_init(void)
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{
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int ret = OK;
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#if defined(CONFIG_ESP32S3_TIMER0) && !defined(CONFIG_ONESHOT)
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ret = esp32s3_timer_initialize("/dev/timer0", ESP32S3_TIMER0);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize TIMER0: %d\n", ret);
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}
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#endif
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#if defined(CONFIG_ESP32S3_TIMER1)
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ret = esp32s3_timer_initialize("/dev/timer1", ESP32S3_TIMER1);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize TIMER1: %d\n", ret);
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}
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#endif
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#if defined(CONFIG_ESP32S3_TIMER2)
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ret = esp32s3_timer_initialize("/dev/timer2", ESP32S3_TIMER2);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize TIMER2: %d\n", ret);
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}
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#endif
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#if defined(CONFIG_ESP32S3_TIMER3)
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ret = esp32s3_timer_initialize("/dev/timer3", ESP32S3_TIMER3);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize TIMER3: %d\n", ret);
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}
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#endif
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#if defined(CONFIG_ONESHOT) && defined(CONFIG_ESP32S3_TIMER0)
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/* Now register one oneshot driver */
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ret = config_oneshot_timer(ESP32S3_TIMER0, ONESHOT_RESOLUTION_US);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize oneshot timer: %d\n", ret);
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}
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#endif /* CONFIG_ONESHOT */
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return ret;
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}
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