From b0c3ed4f1dbab51a15c420a71c750b2552aedea8 Mon Sep 17 00:00:00 2001
From: Eric Brombaugh <ebrombaugh1@cox.net>
Date: Tue, 11 Apr 2023 21:27:47 -0700
Subject: [PATCH] Added putchar() to fix linker errors when using printf on
single char strings.
---
ch32v003fun/ch32v003fun.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/ch32v003fun/ch32v003fun.c b/ch32v003fun/ch32v003fun.c
index 1a77cbc..aec6ade 100644
--- a/ch32v003fun/ch32v003fun.c
+++ b/ch32v003fun/ch32v003fun.c
@@ -32,7 +32,11 @@ int printf(const char* format, ...)
return ret_status;
}
-
+int putchar(int c)
+{
+ return _write( 0, (const char *)(&c), 1 );
+}
+
/* Some stuff from MUSL
--
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