From a2909320348f36b6201894e0bf3ea307dc38a8b3 Mon Sep 17 00:00:00 2001
From: MerryMage <MerryMage@users.noreply.github.com>
Date: Thu, 22 Feb 2018 19:27:22 +0000
Subject: [PATCH] uart: transmit string and hex

---
 exosphere/uart.c | 13 +++++++++++++
 exosphere/uart.h |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/exosphere/uart.c b/exosphere/uart.c
index 265931789..86b10d6e4 100644
--- a/exosphere/uart.c
+++ b/exosphere/uart.c
@@ -30,4 +30,17 @@ void uart_transmit_char(char ch) {
     while (!(UART_LSR_0 & 0x20)) {}
 
     UART_THR_DLAB_0_0 = ch;
+}
+
+void uart_transmit_str(const char *str) {
+    while (*str) {
+        uart_transmit_char(*str++);
+    }
+}
+
+void uart_transmit_hex(uint32_t value) {
+    for (unsigned int i = 0; i < 8; i++) {
+        uint32_t nibble = (value >> (28 - i * 4)) & 0xF;
+        uart_transmit_char("0123456789ABCDEF"[nibble]);
+    }
 }
\ No newline at end of file
diff --git a/exosphere/uart.h b/exosphere/uart.h
index cb7010774..3da1219bf 100644
--- a/exosphere/uart.h
+++ b/exosphere/uart.h
@@ -16,5 +16,7 @@ void *get_uart_address(void); /* This is inlined in uart.c */
 
 void uart_initialize(uint16_t divider);
 void uart_transmit_char(char ch);
+void uart_transmit_str(const char *str);
+void uart_transmit_hex(uint32_t value);
 
 #endif
\ No newline at end of file