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esp32s2-saola-1: Add initialization to LEDC PWM

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This commit is contained in:
Alan Carvalho de Assis 2023-01-31 16:17:59 -03:00 committed by Xiang Xiao
parent 39729bb635
commit 94970f32d7
6 changed files with 217 additions and 1 deletions
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2
arch/xtensa/src/esp32s2/esp32s2_ledc.c
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@ -158,7 +158,7 @@ struct esp32s2_ledc_s
const uint8_t num; /* Timer ID */
const uint8_t channels; /* Timer channels number */
struct esp32s2_ledc_chan_s *chans; /* Timer channels pointer */
struct esp32s2_ledc_chan_s *chans; /* Timer channels pointer */
uint32_t frequency; /* Timer current frequency */
uint32_t reload; /* Timer current reload */

49
boards/xtensa/esp32s2/esp32s2-saola-1/configs/ledpwm/defconfig Normal file
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@ -0,0 +1,49 @@
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_ARCH_LEDS is not set
# CONFIG_NSH_ARGCAT is not set
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
CONFIG_ARCH="xtensa"
CONFIG_ARCH_BOARD="esp32s2-saola-1"
CONFIG_ARCH_BOARD_COMMON=y
CONFIG_ARCH_BOARD_ESP32S2_SAOLA_1=y
CONFIG_ARCH_CHIP="esp32s2"
CONFIG_ARCH_CHIP_ESP32S2=y
CONFIG_ARCH_CHIP_ESP32S2WROVER=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_ARCH_XTENSA=y
CONFIG_BOARD_LOOPSPERMSEC=16717
CONFIG_BUILTIN=y
CONFIG_ESP32S2_LEDC=y
CONFIG_ESP32S2_LEDC_TIM0=y
CONFIG_ESP32S2_LEDC_TIM1=y
CONFIG_ESP32S2_LEDC_TIM2=y
CONFIG_ESP32S2_LEDC_TIM3=y
CONFIG_ESP32S2_UART0=y
CONFIG_EXAMPLES_PWM=y
CONFIG_FS_PROCFS=y
CONFIG_HAVE_CXX=y
CONFIG_HAVE_CXXINITIALIZE=y
CONFIG_IDLETHREAD_STACKSIZE=3072
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_INTELHEX_BINARY=y
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_LINELEN=64
CONFIG_NSH_READLINE=y
CONFIG_PREALLOC_TIMERS=4
CONFIG_RAM_SIZE=114688
CONFIG_RAM_START=0x20000000
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_DAY=6
CONFIG_START_MONTH=12
CONFIG_START_YEAR=2011
CONFIG_SYSTEM_NSH=y
CONFIG_UART0_SERIAL_CONSOLE=y

4
boards/xtensa/esp32s2/esp32s2-saola-1/src/Make.defs
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@ -33,6 +33,10 @@ ifeq ($(CONFIG_DEV_GPIO),y)
CSRCS += esp32s2_gpio.c
endif
ifeq ($(CONFIG_PWM),y)
CSRCS += esp32s2_ledc.c
endif
ifeq ($(CONFIG_ONESHOT),y)
CSRCS += esp32s2_oneshot.c
endif

12
boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2-saola-1.h
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@ -196,5 +196,17 @@ int board_i2sdev_initialize(bool enable_tx, bool enable_rx);
int esp32s2_cs4344_initialize(void);
#endif
/****************************************************************************
* Name: esp32s2_ledc_setup
*
* Description:
* Initialize LEDC PWM and register the PWM device.
*
****************************************************************************/
#ifdef CONFIG_ESP32S2_LEDC
int esp32s2_pwm_setup(void);
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_XTENSA_ESP32S2_ESP32S2_SAOLA_1_SRC_ESP32S2_SAOLA_1_H */

12
boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_bringup.c
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@ -62,6 +62,10 @@
# include "esp32s2_efuse.h"
#endif
#ifdef CONFIG_ESP32S2_LEDC
# include "esp32s2_ledc.h"
#endif
#ifdef CONFIG_WATCHDOG
# include "esp32s2_board_wdt.h"
#endif
@ -133,6 +137,14 @@ int esp32s2_bringup(void)
}
#endif
#ifdef CONFIG_ESP32S2_LEDC
ret = esp32s2_pwm_setup();
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: esp32s2_pwm_setup() failed: %d\n", ret);
}
#endif /* CONFIG_ESP32S2_LEDC */
#ifdef CONFIG_DEV_GPIO
ret = esp32s2_gpio_init();
if (ret < 0)

139
boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_ledc.c Normal file
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@ -0,0 +1,139 @@
/****************************************************************************
* boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_ledc.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 <sys/types.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/board.h>
#include <nuttx/timers/pwm.h>
#include <arch/board/board.h>
#include "chip.h"
#include "esp32s2_ledc.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: esp32s2_pwm_setup
*
* Description:
* Initialize LEDC PWM and register the PWM device.
*
****************************************************************************/
int esp32s2_pwm_setup(void)
{
int ret;
struct pwm_lowerhalf_s *pwm;
#ifdef CONFIG_ESP32S2_LEDC_TIM0
pwm = esp32s2_ledc_init(0);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 0 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm0" */
ret = pwm_register("/dev/pwm0", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_ESP32S2_LEDC_TIM1
pwm = esp32s2_ledc_init(1);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 1 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm1" */
ret = pwm_register("/dev/pwm1", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_ESP32S2_LEDC_TIM2
pwm = esp32s2_ledc_init(2);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 2 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm2" */
ret = pwm_register("/dev/pwm2", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_ESP32S2_LEDC_TIM3
pwm = esp32s2_ledc_init(3);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 3 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm3" */
ret = pwm_register("/dev/pwm3", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
/* May not be used if none LEDC TIMx is enabled */
UNUSED(ret);
UNUSED(pwm);
return OK;
}