Added and tested GPIO class

code/main/CMakeLists.txt

@@ -2,9 +2,13 @@
 # for more information about component CMakeLists.txt files.
 
 idf_component_register(
-    SRCS main.c         # list the source files of this component
+    SRCS 				# list the source files of this component
+    "main.cpp"         
+    "src/gpio.cpp"
     INCLUDE_DIRS        # optional, add here public include directories
+    "inc"
     PRIV_INCLUDE_DIRS   # optional, add here private include directories
     REQUIRES            # optional, list the public requirements (component names)
     PRIV_REQUIRES       # optional, list the private requirements
 )
+

code/main/inc/gpio.h

@@ -60,11 +60,12 @@ class GPIO
 {
    public:
 
-      bool GPIO(int number, GPIO_Direction_t direction);
+      GPIO(int number, GPIO_Direction_t direction);
 
-      bool GPIO_setOutput(GPIO_Value_t value);
+      bool SetOutput(GPIO_Value_t value);
+
+      GPIO_Value_t GetInput(void);
 
-      GPIO_Value_t GPIO_getInput(void);
 
    private:
 
@@ -72,10 +73,11 @@ class GPIO
 
       GPIO_Direction_t direction;
 
-      GPIO_Value_t value;
+      GPIO_Value_t value = GPIO_VALUE_LOW;
 };
 
 
+
 /** @} */
 
 #endif /* MAIN_INC_GPIO_H_ */

code/main/main.c

@@ -1,11 +0,0 @@
-#include <stdio.h>
-#include <stdbool.h>
-#include <unistd.h>
-
-void app_main(void)
-{
-    while (true) {
-        printf("Hello from app_main!\n");
-        sleep(1);
-    }
-}

code/main/main.cpp

@@ -0,0 +1,43 @@
+#include <cstdlib>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#include "driver/gpio.h"
+#include "inc/gpio.h"
+
+static TaskHandle_t devTaskHandle = NULL;
+static void devTask(void* parameters);
+static GPIO gpio0(0, GPIO_DIRECTION_OUTPUT);
+static GPIO gpio1(1, GPIO_DIRECTION_OUTPUT);
+
+extern "C" void app_main(void)
+{
+
+   // Create the development task
+   if(xTaskCreate(devTask, "DevTask", 2048, NULL, 3, &devTaskHandle) != pdPASS)
+   {
+      printf("Task not created");
+   }
+
+    while (true)
+    {
+        vTaskDelay(1000);
+    }
+}
+
+
+
+static void devTask(void* parameters)
+{
+   uint32_t counter = 0;
+
+   printf("DevTask created");
+   while (true)
+   {
+      (void)gpio0.SetOutput((GPIO_Value_t)(counter % 2));
+      (void)gpio1.SetOutput((GPIO_Value_t)(counter % 7));
+      counter++;
+      vTaskDelay(100);
+   }
+}

code/main/src/gpio.cpp

@@ -17,9 +17,9 @@
 // Include files
 // --------------------------------------------------------------------------------------------------------------------
 
+#include <gpio.h>
 #include "driver/gpio.h"
 
-#include "gpio.h"
 
 
 // --------------------------------------------------------------------------------------------------------------------
@@ -50,14 +50,68 @@
 // --------------------------------------------------------------------------------------------------------------------
 
 
-bool GPIO::GPIO(int number, GPIO_Direction_t direction)
+
+GPIO::GPIO(int number, GPIO_Direction_t direction)
 {
    this->number = number;
    this->direction = direction;
 
-   return true;
+
+   //zero-initialize the config structure.
+   gpio_config_t io_conf = {};
+   //disable interrupt
+   io_conf.intr_type = GPIO_INTR_DISABLE;
+   //set as output mode
+   io_conf.mode = (this->direction == GPIO_DIRECTION_OUTPUT) ? GPIO_MODE_OUTPUT : GPIO_MODE_INPUT;
+   //bit mask of the pins that you want to set
+   io_conf.pin_bit_mask = (1ULL << this->number);
+   //disable pull-down mode
+   io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
+   //disable pull-up mode
+   io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
+   //configure GPIO with the given settings
+   ESP_ERROR_CHECK(gpio_config(&io_conf));
+
+}
+
+
+bool GPIO::SetOutput(GPIO_Value_t value)
+{
+   bool returnValue = false;
+
+   if (this->direction == GPIO_DIRECTION_OUTPUT)
+   {
+      ESP_ERROR_CHECK(gpio_set_level((gpio_num_t)this->number, (uint32_t)value));
+      this->value = value;
+      returnValue = true;
+   }
+   else
+   {
+      returnValue = false;
+   }
+
+   return returnValue;
+}
+
+GPIO_Value_t GPIO::GetInput(void)
+{
+   if (gpio_get_level((gpio_num_t)this->number))
+   {
+      this->value = GPIO_VALUE_HIGH;
+   }
+   else
+   {
+      this->value = GPIO_VALUE_LOW;
+   }
+
+   return this->value;
 }
 
 
 
 
+
+
+
+
+