xt disable and enable functions

Author: Makuna

cores/esp8266/core_esp8266_wiring_digital.c

@@ -139,6 +139,21 @@ extern void __detachInterrupt(uint8_t pin) {
   }
 }
 
+static uint32_t interruptState = 0;
+
+void xt_disable_interrupts()
+{
+    __asm__ __volatile__("rsil %0,15":"=a" (interruptState));
+    __asm__("esync");
+    __asm__("isync");
+    __asm__("dsync");
+}
+void xt_enable_interrupts()
+{
+    __asm__ __volatile__("wsr %0,ps"::"a" (interruptState) : "memory");
+    __asm__("esync");
+}
+
 void initPins() {
   //Disable UART interrupts
   system_set_os_print(0);