nuttx/boards/xtensa/esp32/esp32-wrover-kit/include/board.h
Abdelatif Guettouche 6875207985 boards/xtensa/esp32/esp32-wrover-kit: Add an example on how to use GPIO
interrupts.

This example uses the GPIO driver with the 3 on board LEDs outputs and one input
as an interrupt pin.

Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
2021-01-15 09:47:33 +01:00

114 lines
4.1 KiB
C

/****************************************************************************
* boards/xtensa/esp32/esp32-wrover-kit/include/board.h
*
* 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.
*
****************************************************************************/
#ifndef __BOARDS_XTENSA_ESP32_ESP32_WROVER_KIT_INCLUDE_BOARD_H
#define __BOARDS_XTENSA_ESP32_ESP32_WROVER_KIT_INCLUDE_BOARD_H
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Clocking *****************************************************************/
/* The ESP32 Ethernet kit board V2 is fitted with either a 26 or a 40MHz
* crystal
*/
#ifdef CONFIG_ESP32_WROVERKIT_XTAL_26MHz
# define BOARD_XTAL_FREQUENCY 26000000
#else
# define BOARD_XTAL_FREQUENCY 40000000
#endif
/* Clock reconfiguration is currently disabled, so the CPU will be running
* at the XTAL frequency or at two times the XTAL frequency, depending upon
* how we load the code:
*
* - If we load the code into FLASH at address 0x1000 where it is started by
* the second level bootloader, then the frequency is the crystal
* frequency.
* - If we load the code into IRAM after the second level bootloader has run
* this frequency will be twice the crystal frequency.
*
* Don't ask me for an explanation.
*/
/* Note: The bootloader (esp-idf bootloader.bin) configures:
*
* - CPU frequency to 80MHz
* - The XTAL frequency according to the SDK config CONFIG_ESP32_XTAL_FREQ,
* which is 40MHz by default.
*
* Reference:
* https://github.com/espressif/esp-idf/blob
* /6fd855ab8d00d23bad4660216bc2122c2285d5be/components
* /bootloader_support/src/bootloader_clock.c#L38-L62
*/
#ifdef CONFIG_ESP32_WROVERKIT_RUN_IRAM
# define BOARD_CLOCK_FREQUENCY (2 * BOARD_XTAL_FREQUENCY)
#else
#ifdef CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ
# define BOARD_CLOCK_FREQUENCY (CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ * 1000000)
#else
# define BOARD_CLOCK_FREQUENCY 80000000
#endif
#endif
/* LED definitions **********************************************************/
/* Define how many LEDs this board has (needed by userleds) */
#define BOARD_LED1 0
#define BOARD_LED2 1
#define BOARD_LED3 2
#define BOARD_NLEDS 3
#define BOARD_LED_RED BOARD_LED1
#define BOARD_LED_GREEN BOARD_LED2
#define BOARD_LED_BLUE BOARD_LED3
/* LED bits for use with autoleds */
#define BOARD_LED1_BIT (1 << BOARD_LED1)
#define BOARD_LED2_BIT (1 << BOARD_LED2)
#define BOARD_LED3_BIT (1 << BOARD_LED3)
/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the 3 LEDs on
* board the ESP-WROVER-KIT. The following definitions describe how
* NuttX controls the LEDs:
*/
#define LED_STARTED 0 /* LED2 */
#define LED_HEAPALLOCATE 1 /* LED3 */
#define LED_IRQSENABLED 2 /* LED3 + LED2 */
#define LED_STACKCREATED 3 /* LED3 */
#define LED_INIRQ 4 /* LED1 + LED3 */
#define LED_SIGNAL 5 /* LED2 + LED3 */
#define LED_ASSERTION 6 /* LED1 + LED2 + LED3 */
#define LED_PANIC 7 /* LED1 + N/C + N/C */
/* GPIO pins used by the GPIO Subsystem */
#define BOARD_NGPIOOUT 3 /* Amount of GPIO Output pins */
#define BOARD_NGPIOINT 1 /* Amount of GPIO Input w/ Interruption pins */
#endif /* __BOARDS_XTENSA_ESP32_ESP32_WROVER_KIT_INCLUDE_BOARD_H */