Adicionado arquivo handlerUART.s

cMIPS/include/handlers.s

@@ -108,11 +108,11 @@ UARTinterr:
 	#----------------------------------
 	# while you are developing the complete handler,
 	#    uncomment the line below and comment out lines up to UARTret
-	# .include "../tests/handlerUART.s"
+	.include "../tests/handlerUART.s"
 	#----------------------------------
 	
-	andi  $a0, $k1, UART_rx_irq # Is this reception?
-	beq   $a0, $zero, UARTret   #   no, ignore it and return
+	# andi  $a0, $k1, UART_rx_irq # Is this reception?
+	# beq   $a0, $zero, UARTret   #   no, ignore it and return
 	
 	lui   $a0, %hi(HW_uart_addr)
 	ori   $a0, $a0, %lo(HW_uart_addr)

cMIPS/tests/handlerUART.s

+    #--------------------------------------------------------------------------
+    # interrupt handler for UART
+RX:
+    andi  $a0, $k1, UART_rx_irq # Is this reception?
+    beq   $a0, $zero, TX        #   no, test if it's transmission
+    nop
+    # TODO: Read data, store it to buffer and decrement nrx (we're reading a char)
+TX:
+    andi $a0, $k1, UART_tx_irq  # Is this transmission?
+    beq  $a0, $zero, END        #   no, end handler
+    nop
+    # TODO: Increment ntx (we're sending a char)
+
+END:
+