Add stepper library for esp-idf

components/DendoStepper/example/.gitignore

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+build/
+sdkconfig
+sdkconfig.old

components/DendoStepper/example/CMakeLists.txt

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+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+set(EXTRA_COMPONENT_DIRS "../")
+project(example)

components/DendoStepper/example/README.md

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+# _Sample project_
+
+(See the README.md file in the upper level 'examples' directory for more information about examples.)
+
+This is the simplest buildable example. The example is used by command `idf.py create-project`
+that copies the project to user specified path and set it's name. For more information follow the [docs page](https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html#start-a-new-project)
+
+
+
+## How to use example
+We encourage the users to use the example as a template for the new projects.
+A recommended way is to follow the instructions on a [docs page](https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html#start-a-new-project).
+
+## Example folder contents
+
+The project **sample_project** contains one source file in C language [main.c](main/main.c). The file is located in folder [main](main).
+
+ESP-IDF projects are built using CMake. The project build configuration is contained in `CMakeLists.txt`
+files that provide set of directives and instructions describing the project's source files and targets
+(executable, library, or both). 
+
+Below is short explanation of remaining files in the project folder.
+
+```
+├── CMakeLists.txt
+├── main
+│   ├── CMakeLists.txt
+│   └── main.c
+└── README.md                  This is the file you are currently reading
+```
+Additionally, the sample project contains Makefile and component.mk files, used for the legacy Make based build system. 
+They are not used or needed when building with CMake and idf.py.

components/DendoStepper/example/main/CMakeLists.txt

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+idf_component_register(SRCS "main.cpp"
+                    INCLUDE_DIRS "."
+                    REQUIRES DendoStepper freertos)

components/DendoStepper/example/main/main.cpp

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+#include <stdio.h>
+#include "DendoStepper.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_log.h"
+
+DendoStepper step;
+DendoStepper step1;
+
+extern "C" void app_main(void)
+{
+    DendoStepper_config_t step_cfg = {
+        .stepPin = 16,
+        .dirPin = 17,
+        .enPin = 15,
+        .timer_group = TIMER_GROUP_0,
+        .timer_idx = TIMER_0,
+        .miStep = MICROSTEP_32,
+        .stepAngle = 1.8};
+
+    DendoStepper_config_t step1_cfg = {
+        .stepPin = 18,
+        .dirPin = 19,
+        .enPin = 20,
+        .timer_group = TIMER_GROUP_0,
+        .timer_idx = TIMER_1,
+        .miStep = MICROSTEP_32,
+        .stepAngle = 1.8};
+
+    step.config(&step_cfg);
+    step1.config(&step1_cfg);
+
+    step.init();
+    step1.init();
+
+    step.setSpeed(10000, 1000, 1000);
+    step1.setSpeed(20000, 1000, 1000);
+
+    // step.runInf(true);
+    step.setStepsPerMm(10);
+
+    while (1)
+    {
+        step.runPosMm(500);
+        step1.runPos(10000);
+        vTaskDelay(1000);
+        // step.runAbs(5000);
+    }
+}