From 99c602fde6bdd45fa10f4f17059ff44619789cd0 Mon Sep 17 00:00:00 2001
From: Peter Harper <peter.harper@raspberrypi.com>
Date: Wed, 23 Oct 2024 14:00:28 +0100
Subject: [PATCH] Fix build issues when RTT is enabled

Fixes https://github.com/raspberrypi/pico-examples/issues/565
---
 src/rp2_common/pico_stdio_rtt/SEGGER/RTT/SEGGER_RTT.c | 5 +++++
 src/rp2_common/pico_stdio_rtt/stdio_rtt.c             | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/rp2_common/pico_stdio_rtt/SEGGER/RTT/SEGGER_RTT.c b/src/rp2_common/pico_stdio_rtt/SEGGER/RTT/SEGGER_RTT.c
index f35540417..c69fca7d0 100644
--- a/src/rp2_common/pico_stdio_rtt/SEGGER/RTT/SEGGER_RTT.c
+++ b/src/rp2_common/pico_stdio_rtt/SEGGER/RTT/SEGGER_RTT.c
@@ -78,6 +78,11 @@ Additional information:
 
 #include <string.h>                 // for memcpy
 
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#pragma GCC diagnostic ignored "-Wcast-align"
+#endif
+
 /*********************************************************************
 *
 *       Configuration, default values
diff --git a/src/rp2_common/pico_stdio_rtt/stdio_rtt.c b/src/rp2_common/pico_stdio_rtt/stdio_rtt.c
index 2dc75579a..2af1f7028 100644
--- a/src/rp2_common/pico_stdio_rtt/stdio_rtt.c
+++ b/src/rp2_common/pico_stdio_rtt/stdio_rtt.c
@@ -26,11 +26,11 @@ void stdio_rtt_deinit(void) {
 }
 
 static void stdio_rtt_out_chars(const char *buf, int length) {
-    SEGGER_RTT_Write(0, buf, length);
+    SEGGER_RTT_Write(0, buf, (unsigned)length);
 }
 
 static int stdio_rtt_in_chars(char *buf, int length) {
-    return SEGGER_RTT_Read(0, buf, length);
+    return (int)SEGGER_RTT_Read(0, buf, (unsigned)length);
 }
 
 stdio_driver_t stdio_rtt = {