From 0cae187f5b87cda5ae85672171af3bbdde1fea61 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Sat, 4 Dec 2021 17:28:51 -0700
Subject: Added special cases for recieved newline and backspace

Toggle timer output
---
 src/cpu/irq.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/cpu/irq.c b/src/cpu/irq.c
index 26883a2..ea13e84 100644
--- a/src/cpu/irq.c
+++ b/src/cpu/irq.c
@@ -1,6 +1,8 @@
 #include "../cpu/irq.h"
 #include "../sys/core.h"
+#include "../sys/timer.h"
 #include "../drivers/uart.a.h"
+#include "../drivers/uart.h"
 #include "../util/time.h"
 
 extern void disable_irq(void);
@@ -13,19 +15,33 @@ void c_irq_handler(void) {
 		if(load32(IRQ_PENDING2) & (1 << 25)) {
 			if(load32(UART0_MIS) & (1<<4)) {
 				unsigned long data = load32(UART0_DR);
-				if(data == 0x74) {
+				// Tab to toggle timer
+				if(data == 0x14) {
 					unsigned long timer_status;
 					asm volatile("mrc p15, 0, %0, c14, c3, 1" : "=r"(timer_status));
 					if(timer_status == 0) {
 						cntfrq = read_cntfrq();
 						write_cntv_tval(cntfrq);
 						enable_cntv();
+						uart_string((char*)" Timer \033[92menabled\033[0m\n");
 					} else {
 						disable_cntv();
+						uart_string((char*)" Timer \033[91mdisabled\033[0m\n");
+					}
+				} else {
+					if (data == 0x0D) {
+						uart_char(0x0a);
+					} else if (data == 0x08) {
+						uart_char((unsigned char)data);
+						uart_char(0x20);
+						uart_char((unsigned char)data);
+					} else {
+						uart_char((unsigned char)data);
+						//uart_char(0x20);
+						//uart_hexn(data);
+						//uart_string((char*)" c_irq_handler\n");
 					}
 				}
-				uart_char((unsigned char)data);
-				//uart_string((char*)" c_irq_handler\n");
 				enable_irq();
 				return;
 			}
-- 
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