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authorNico <NicoHood@users.noreply.github.com>2015-09-20 11:07:19 +0200
committerNico <NicoHood@users.noreply.github.com>2015-09-20 11:07:19 +0200
commitedcfdba42da5a02b8af9152591999323260b4425 (patch)
treef9da63a7bada71c1f3242c60b2fe68a60b56bfae
parente4f0bb22dac44b727ec6dd148f57ad4ef63b45cf (diff)
Fix HW Serial buffer size determination
-rw-r--r--cores/arduino/HardwareSerial.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h
index 1beafc5..8a5bf95 100644
--- a/cores/arduino/HardwareSerial.h
+++ b/cores/arduino/HardwareSerial.h
@@ -40,14 +40,14 @@
// often work, but occasionally a race condition can occur that makes
// Serial behave erratically. See https://github.com/arduino/Arduino/issues/2405
#if !defined(SERIAL_TX_BUFFER_SIZE)
-#if (RAMEND < 1000)
+#if ((RAMEND - RAMSTART) < 1023)
#define SERIAL_TX_BUFFER_SIZE 16
#else
#define SERIAL_TX_BUFFER_SIZE 64
#endif
#endif
#if !defined(SERIAL_RX_BUFFER_SIZE)
-#if (RAMEND < 1000)
+#if ((RAMEND - RAMSTART) < 1023)
#define SERIAL_RX_BUFFER_SIZE 16
#else
#define SERIAL_RX_BUFFER_SIZE 64