From 71c0c6f8a6f3eb5ed9f604f42cde9f9c107475f6 Mon Sep 17 00:00:00 2001
From: Neil McKechnie <neilmck999@gmail.com>
Date: Mon, 20 Mar 2023 17:40:19 +0000
Subject: [PATCH] Update IO_CMRI.h

Remove compiler warnings on STM32 compiler.
---
 IO_CMRI.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/IO_CMRI.h b/IO_CMRI.h
index ce8afea..2e379f5 100644
--- a/IO_CMRI.h
+++ b/IO_CMRI.h
@@ -291,9 +291,9 @@ protected:
     _serial->write(node->getAddress() + 65);
     _serial->write('I'); // I for initialise message
     _serial->write(node->getType());  // NDP
-    _serial->write(0);  // dH
-    _serial->write(0);  // dL
-    _serial->write(0);  // NS
+    _serial->write((uint8_t)0);  // dH
+    _serial->write((uint8_t)0);  // dL
+    _serial->write((uint8_t)0);  // NS
     _serial->write(ETX);
     return true;
   }