feat(hwcdc): Refactor HWCDC constructor for bus deinitialization

Refactor HWCDC constructor to conditionally set bus deinitialization for USB DM and DP.

Author: SuGlider

cores/esp32/HWCDC.cpp

@@ -253,8 +253,6 @@ static void ARDUINO_ISR_ATTR cdc0_write_char(char c) {
 }
 
 HWCDC::HWCDC() {
-  perimanSetBusDeinit(ESP32_BUS_TYPE_USB_DM, HWCDC::deinit);
-  perimanSetBusDeinit(ESP32_BUS_TYPE_USB_DP, HWCDC::deinit);
   // SOF in ISR causes problems for uploading firmware
   //  lastSOF_ms = 0;
   //  SOF_TIMEOUT = 5;
@@ -323,15 +321,19 @@ void HWCDC::begin(unsigned long baud) {
   // delay(10);  // USB Host has to enumerate it again
 
   // Peripheral Manager setting for USB D+ D- pins
-  uint8_t pin = USB_INT_PHY0_DM_GPIO_NUM;
-  if (!perimanSetPinBus(pin, ESP32_BUS_TYPE_USB_DM, (void *)this, -1, -1)) {
+  // Peripheral Manager setting for USB D+ D- pins
+  if (perimanGetBusDeinit(ESP32_BUS_TYPE_USB_DM) == NULL) {
+    perimanSetBusDeinit(ESP32_BUS_TYPE_USB_DM, HWCDC::deinit);
+  } 
+  if (!perimanSetPinBus(USB_INT_PHY0_DM_GPIO_NUM, ESP32_BUS_TYPE_USB_DM, (void *)this, -1, -1)) {
     goto err;
   }
-  pin = USB_INT_PHY0_DP_GPIO_NUM;
-  if (!perimanSetPinBus(pin, ESP32_BUS_TYPE_USB_DP, (void *)this, -1, -1)) {
+  if (perimanGetBusDeinit(ESP32_BUS_TYPE_USB_DP) == NULL) {
+    perimanSetBusDeinit(ESP32_BUS_TYPE_USB_DP, HWCDC::deinit);
+  } 
+  if (!perimanSetPinBus(USB_INT_PHY0_DP_GPIO_NUM, ESP32_BUS_TYPE_USB_DP, (void *)this, -1, -1)) {
     goto err;
   }
-
   // Configure PHY
   // USB_Serial_JTAG use internal PHY
   USB_SERIAL_JTAG.conf0.phy_sel = 0;