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https://github.com/RIOT-OS/RIOT.git
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7caf2066d8
This makes sure that newlib's printf is correctly overridden by: 1. Adding wrappers for some more obscure printf() variants 2. Forcing a compilation failure when newlib's stdio is still linked in while mpaland-printf is used 3. Not adding `-u _printf_float` to the linker flags when mpaland-printf is used.
51 lines
1.2 KiB
Diff
51 lines
1.2 KiB
Diff
From ca5d3c2e0488b1888299ed7eb81c4dc16b7ac8c6 Mon Sep 17 00:00:00 2001
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From: Marian Buschsieweke <marian.buschsieweke@posteo.net>
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Date: Sat, 11 May 2024 17:51:01 +0200
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Subject: [PATCH 2/4] RIOT integration
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Use stdio_write() from stdio_base.h for output
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---
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printf.c | 8 ++++++++
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printf.h | 2 +-
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2 files changed, 9 insertions(+), 1 deletion(-)
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diff --git a/printf.c b/printf.c
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index e6e18fa..d560d2b 100644
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--- a/printf.c
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+++ b/printf.c
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@@ -34,6 +34,7 @@
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#include <stdint.h>
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#include "printf.h"
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+#include "stdio_base.h"
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// define this globally (e.g. gcc -DPRINTF_INCLUDE_CONFIG_H ...) to include the
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@@ -912,3 +913,10 @@ int fctprintf(void (*out)(char character, void* arg), void* arg, const char* for
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va_end(va);
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return ret;
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}
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+
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+
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+/* RIOT integration: Use stdio_write for output */
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+static void _putchar(char character)
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+{
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+ stdio_write(&character, sizeof(character));
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+}
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diff --git a/printf.h b/printf.h
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index 6075bc2..154930a 100644
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--- a/printf.h
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+++ b/printf.h
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@@ -46,7 +46,7 @@ extern "C" {
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* This function is declared here only. You have to write your custom implementation somewhere
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* \param character Character to output
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*/
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-void _putchar(char character);
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+static void _putchar(char character);
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/**
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--
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2.43.0
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