[esp32] example

Author: mean

example/esp32/CMakeLists.txt

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+######################################
+#
+# Hello world for ESP32/Cmake
+#
+######################################
+cmake_minimum_required(VERSION 3.0)
+#--------------------------------------------------------------------------------------
+# Select platform 
+SET(PLATFORM_ARCHITECTURE "ESP32")
+# and installation for extra arduino files AND toolchain (compiler...)
+# Path to the toolchain, must contain arm-none-eabi-gcc,-g++ and friends
+SET(PLATFORM_TOOLCHAIN_PATH "/home/fx/Arduino/hardware/espressif/esp32/tools/xtensa-esp32-elf/bin/")
+#  Path to the platform folder
+# You can download it from https://github.com/rogerclarkmelbourne/Arduino_STM32.git 
+# ***** The last folder ** MUST BE *** arduino *****
+SET(PLATFORM_PATH "/home/fx/Arduino/hardware/espressif/esp32")
+# and here we go
+SET(CMAKE_TOOLCHAIN_FILE cmake/ArduinoToolchain.cmake)
+MESSAGE(STATUS "Starting hello-esp32")
+#
+#
+#
+Project("Hello_esp32" C CXX ASM) # ASM must be present !
+MESSAGE(STATUS "Dumping board")
+print_board_list()
+#
+# that changes the way the binary is linked, better to use DFU in all cases !
+SET(ARDUINO_UPLOAD_METHOD DFUUpload)
+
+#
+set(ARDUINO_DEFAULT_BOARD esp32) # Default Board ID, when not specified
+#set(ARDUINO_DEFAULT_PORT  ttyACM0) # Default Port, when not specified
+#set(ARDUINO_CPU           STM32F103C8)
+#
+generate_arduino_firmware(GetChipID 
+                SKETCH GetChipID.ino              # Folder to get the .ino from, must follow DIR_NAME/DIR_NAME.ino patten !
+                PORT ${ARDUINO_DEFAULT_PORT}
+                )
+#--------------------------------------------------------------------------------------

example/esp32/GetChipID.ino

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+#include "stdint.h"
+uint64_t chipid;  
+
+void setup() {
+	Serial.begin(115200);
+}
+
+void loop() {
+	chipid=ESP.getEfuseMac();//The chip ID is essentially its MAC address(length: 6 bytes).
+	Serial.printf("ESP32 Chip ID = %04X",(uint16_t)(chipid>>32));//print High 2 bytes
+	Serial.printf("%08X\n",(uint32_t)chipid);//print Low 4bytes.
+
+	delay(3000);
+
+}

example/esp32/cmake

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+/home/fx/Arduino_esp32/GetId/cmake/example/esp32/../..