ESP32 port

boards/common/esp32/Makefile

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+MODULE = boards_common_esp32
+
+include $(RIOTBASE)/Makefile.base

boards/common/esp32/Makefile.dep

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+include $(RIOTCPU)/esp32/Makefile.dep
+
+ifneq (,$(filter saul_default,$(USEMODULE)))
+  USEMODULE += saul_gpio
+endif

boards/common/esp32/Makefile.features

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+# most board features results directly from ESP32 CPU features
+include $(RIOTCPU)/esp32/Makefile.features
+
+# additional features provided by all boards are GPIOs and at least one UART
+FEATURES_PROVIDED += periph_gpio
+FEATURES_PROVIDED += periph_gpio_irq
+FEATURES_PROVIDED += periph_uart
+
+# other features provided by all boards
+FEATURES_PROVIDED += esp_spiffs
+FEATURES_PROVIDED += esp_wifi
+FEATURES_PROVIDED += esp_now

boards/common/esp32/Makefile.include

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+# the cpu to build for
+export CPU ?= esp32
+export CPU_MODEL ?= esp32
+
+# configure the serial interface
+PORT_LINUX ?= /dev/ttyUSB0
+PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.SLAB_USBtoUART*)))
+include $(RIOTMAKE)/tools/serial.inc.mk
+
+# reset tool configuration
+export RESET = esptool.py --before default_reset run

boards/common/esp32/board_common.c

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+/*
+ * Copyright (C) 2018 Gunar Schorcht
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @defgroup    boards_common_esp32 ESP32 Board Commons
+ * @ingroup     boards_common
+ * @brief       Common definitions for all ESP32 boards
+ * @{
+ *
+ * @file
+ * @brief       Common declarations and functions for all ESP32 boards.
+ *
+ * This file contains default declarations and functions that are valid
+ * for all ESP32 boards.
+ *
+ * @author      Gunar Schorcht <gunar@schorcht.net>
+ */
+
+#include "board.h"
+#include "esp_common.h"
+#include "log.h"
+#include "periph/gpio.h"
+#include "periph/spi.h"
+#include "rom/ets_sys.h"
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+void board_init(void)
+{
+    #ifdef LED0_PIN
+    gpio_init (LED0_PIN, GPIO_OUT);
+    LED0_OFF;
+    #endif
+    #ifdef LED1_PIN
+    gpio_init (LED1_PIN, GPIO_OUT);
+    LED1_OFF;
+    #endif
+    #ifdef LED2_PIN
+    gpio_init (LED2_PIN, GPIO_OUT);
+    LED2_OFF;
+    #endif
+}
+
+extern void adc_print_config(void);
+extern void pwm_print_config(void);
+extern void i2c_print_config(void);
+extern void spi_print_config(void);
+extern void uart_print_config(void);
+extern void can_print_config(void);
+
+void print_board_config (void)
+{
+    ets_printf("\nBoard configuration:\n");
+
+    adc_print_config();
+    pwm_print_config();
+    i2c_print_config();
+    spi_print_config();
+    uart_print_config();
+
+    #ifdef MODULE_ESP_CAN
+    can_print_config();
+    #endif
+
+    ets_printf("\tLED\t\tpins=[ ");
+    #ifdef LED0_PIN
+    ets_printf("%d ", LED0_PIN);
+    #endif
+    #ifdef LED1_PIN
+    ets_printf("%d ", LED1_PIN);
+    #endif
+    #ifdef LED2_PIN
+    ets_printf("%d ", LED2_PIN);
+    #endif
+    ets_printf("]\n");
+
+    ets_printf("\tBUTTONS\t\tpins=[ ");
+    #ifdef BUTTON0_PIN
+    ets_printf("%d ", BUTTON0_PIN);
+    #endif
+    #ifdef BUTTON2_PIN
+    ets_printf("%d ", BUTTON1_PIN);
+    #endif
+    #ifdef BUTTON3_PIN
+    ets_printf("%d ", BUTTON2_PIN);
+    #endif
+    ets_printf("]\n");
+
+    ets_printf("\n");
+}
+
+#ifdef __cplusplus
+} /* end extern "C" */
+#endif
+
+/** @} */

boards/common/esp32/doc.txt

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+/*
+ * Copyright (C) 2018 Gunar Schorcht
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @defgroup    boards_common_esp32  ESP32 Common
+ * @ingroup     boards_common
+ * @ingroup     boards_esp32
+ * @brief       Definitions and configurations that are common for
+ *              all ESP32 boards.
+ *
+ * For detailed information about the ESP32, configuring and compiling RIOT
+ * for ESP32 boards, please refer \ref esp32_riot.
+ */
+
+/**
+ * @defgroup    boards_esp32  ESP32 Boards
+ * @ingroup     boards
+ * @brief       This group of boards contains the documentation
+ *              defined ESP32 boards.
+ *
+ * @note        For detailed information about the ESP32 SoC, the tool chain
+ *              as well as configuring and compiling RIOT for ESP32 boards,
+ *              see \ref esp32_riot.
+ */

boards/common/esp32/include/arduino_board_common.h

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+/*
+ * Copyright (C)  2018 Gunar Schorcht
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     boards_common_esp32
+ * @{
+ *
+ * @file
+ * @brief       Common board for the Arduino API
+ *
+ * @author      Gunar Schorcht <gunar@schorcht.net>
+ */
+
+#ifndef ARDUINO_BOARD_COMMON_H
+#define ARDUINO_BOARD_COMMON_H
+
+#include "arduino_pinmap.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/**
+ * @brief   Look-up table for the Arduino's digital pins
+ */
+static const gpio_t arduino_pinmap[] = {
+    ARDUINO_PIN_0,
+    ARDUINO_PIN_1,
+    ARDUINO_PIN_2,
+    ARDUINO_PIN_3,
+    ARDUINO_PIN_4,
+    ARDUINO_PIN_5,
+    ARDUINO_PIN_6,
+    ARDUINO_PIN_7,
+    ARDUINO_PIN_8,
+    ARDUINO_PIN_9,
+    ARDUINO_PIN_10,
+    ARDUINO_PIN_11,
+    ARDUINO_PIN_12,
+    ARDUINO_PIN_13,
+    ARDUINO_PIN_A0,
+    ARDUINO_PIN_A1,
+    ARDUINO_PIN_A2,
+    ARDUINO_PIN_A3,
+    ARDUINO_PIN_A4,
+    ARDUINO_PIN_A5
+};
+
+/**
+ * @brief   Look-up table for the Arduino's analog pins
+ */
+static const adc_t arduino_analog_map[] = {
+    ARDUINO_PIN_A0,
+    ARDUINO_PIN_A1,
+    ARDUINO_PIN_A2,
+    ARDUINO_PIN_A3,
+    ARDUINO_PIN_A4,
+    ARDUINO_PIN_A5
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ARDUINO_BOARD_COMMON_H */
+/** @} */

boards/common/esp32/include/board_common.h

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+/*
+ * Copyright (C) 2018 Gunar Schorcht
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     boards_common_esp32
+ * @brief       Board definitions that are common for all ESP32 boards.
+ *
+ * This file contains board configurations that are valid for all ESP32.
+ *
+ * For detailed information about the configuration of ESP32 boards, see
+ * section \ref esp32_comm_periph "Common Peripherals".
+ *
+ * @author      Gunar Schorcht <gunar@schorcht.net>
+ * @file
+ * @{
+ */
+
+#ifndef BOARD_COMMON_H
+#define BOARD_COMMON_H
+
+#include <stdint.h>
+
+#include "cpu.h"
+#include "periph_conf.h"
+#include "arduino_pinmap.h"
+
+#include "periph/gpio.h"
+#include "sdk_conf.h"
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/**
+ * @name   LED configuration (three predefined LEDs at maximum)
+ *
+ * @note LEDx_ACTIVE value must be declared in board configuration.
+ * @{
+ */
+#if defined(LED0_PIN) || DOXYGEN
+#define LED0_MASK       (BIT(LED0_PIN))
+#define LED0_ON         (gpio_write(LED0_PIN,  LED0_ACTIVE))
+#define LED0_OFF        (gpio_write(LED0_PIN, !LED0_ACTIVE))
+#define LED0_TOGGLE     (gpio_toggle(LED0_PIN))
+#endif
+
+#if defined(LED1_PIN) || DOXYGEN
+#define LED1_MASK       (BIT(LED1_PIN))
+#define LED1_ON         (gpio_write(LED1_PIN,  LED1_ACTIVE))
+#define LED1_OFF        (gpio_write(LED1_PIN, !LED1_ACTIVE))
+#define LED1_TOGGLE     (gpio_toggle(LED1_PIN))
+#endif
+
+#if defined(LED2_PIN) || DOXYGEN
+#define LED2_MASK       (BIT(LED2_PIN))
+#define LED2_ON         (gpio_write(LED2_PIN,  LED2_ACTIVE))
+#define LED2_OFF        (gpio_write(LED2_PIN, !LED2_ACTIVE))
+#define LED2_TOGGLE     (gpio_toggle(LED2_PIN))
+#endif
+/** @} */
+
+
+/**
+ * @name    STDIO configuration
+ * @{
+ */
+/**< Default baudrate of UART for stdio */
+#ifndef STDIO_UART_BAUDRATE
+#define STDIO_UART_BAUDRATE      (115200)
+#endif
+/** @} */
+
+
+#if MODULE_MTD || DOXYGEN
+/**
+ * @name    MTD system drive configuration
+ *
+ * Built-in SPI flash memory is used as MTD system drive.
+ * @{
+ */
+#include "mtd.h"
+
+/**
+ * @brief   MTD drive start address in SPI flash memory
+ *
+ * Defines the start adress of the MTD system device in the SPI
+ * flash memory. It can be overridden by \ref esp32_app_spec_conf
+ * "application-specific board configuration"
+ *
+ * If the MTD start address is not defined or is 0, the first possible
+ * multiple of 0x100000 (1 MByte) is used in free SPI flash memory,
+ * which was determined from the partition table.
+ */
+#ifndef SPI_FLASH_DRIVE_START
+#define SPI_FLASH_DRIVE_START  0
+#endif
+
+/** Default MTD drive definition */
+#define MTD_0 mtd0
+
+/** Pointer to the default MTD drive structure */
+extern mtd_dev_t *mtd0;
+
+/** @} */
+#endif /* MODULE_MTD || DOXYGEN */
+
+
+#if MODULE_SPIFFS || DOXYGEN
+/**
+ * @name    SPIFFS configuration for the system MTD device
+ *
+ * Configuration of the SPIFFS that can be used on the system MTD device.
+ * @{
+ */
+#define SPIFFS_ALIGNED_OBJECT_INDEX_TABLES 1
+#define SPIFFS_READ_ONLY 0
+#define SPIFFS_SINGLETON 0
+#define SPIFFS_HAL_CALLBACK_EXTRA 1
+#define SPIFFS_CACHE 1
+/** @} */
+#endif /* MODULE_SPIFFS || DOXYGEN */
+
+
+/**
+ * @brief Initialize board specific hardware
+ *
+ * Since all features of ESP32 boards are provided by the SOC, almost all
+ * initializations are done during the CPU initialization that is called from
+ * boot loader.
+ */
+void board_init (void);
+
+/**
+  * @brief Print the board configuration in a human readable format
+  */
+void print_board_config (void);
+
+#ifdef __cplusplus
+} /* end extern "C" */
+#endif
+
+#endif /* BOARD_COMMON_H */
+/** @} */