Improve printf() support

PaulStoffregen · Jan 14, 2023 · 0bdfd22 · 0bdfd22
1 parent 78f6193
commit 0bdfd22
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diff --git a/teensy3/Print.cpp b/teensy3/Print.cpp
@@ -86,6 +86,7 @@ extern "C" {
 __attribute__((weak))
 int _write(int file, char *ptr, int len)
 {
+	if (file >= 0 && file <= 2) file = (int)&Serial;
 	((class Print *)file)->write((uint8_t *)ptr, len);
 	return len;
 }

diff --git a/teensy4/Print.cpp b/teensy4/Print.cpp
@@ -92,6 +92,7 @@ extern "C" {
 __attribute__((weak))
 int _write(int file, char *ptr, int len)
 {
+	if (file >= 0 && file <= 2) file = (int)&Serial;
 	((class Print *)file)->write((uint8_t *)ptr, len);
 	return len;
 }