/**************************************************************************** * 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_NGPIOIN 1 /* Amount of GPIO Input pins */ #define BOARD_NGPIOOUT 1 /* 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 */