cores/psoc: GPIO Deinit added.

Signed-off-by: IFX-Anusha <Anusha.TR@infineon.com>

Author: IFX-Anusha

cores/psoc6/Arduino.h

@@ -39,6 +39,7 @@ extern "C" {
 // ****************************************************************************
 extern const cyhal_gpio_t mapping_gpio_pin[];
 extern const uint8_t GPIO_PIN_COUNT;
+extern bool gpio_initialized[];
 
 #define GPIO_INTERRUPT_PRIORITY 3 // GPIO interrupt priority
 #define digitalPinToInterrupt(p) ((p) < GPIO_PIN_COUNT ? (p) : -1)

cores/psoc6/digital_io.c

@@ -23,10 +23,18 @@ extern "C" {
 #endif
 
 void pinMode(pin_size_t pinNumber, PinMode pinMode) {
+
+
     if (pinNumber > GPIO_PIN_COUNT) {
         return; // Invalid pin number
     }
 
+    // check if pinNumber is initialized before
+    if (gpio_initialized[pinNumber]) {
+        cyhal_gpio_free(mapping_gpio_pin[pinNumber]);
+        gpio_initialized[pinNumber] = false;
+    }
+
     cyhal_gpio_direction_t direction;
     cyhal_gpio_drive_mode_t drive_mode;
     bool initPinValue = false;
@@ -65,6 +73,8 @@ void pinMode(pin_size_t pinNumber, PinMode pinMode) {
 
     // Initialize the GPIO pin with the specified direction, drive mode and set initial value
     (void)cyhal_gpio_init(mapping_gpio_pin[pinNumber], direction, drive_mode, initPinValue);
+
+    gpio_initialized[pinNumber] = true;
 }
 
 PinStatus digitalRead(pin_size_t pinNumber) {