From 63bc413da806888039262f9e4db0863b2950bc88 Mon Sep 17 00:00:00 2001
From: Red Echidna UK <64329845+RedEchidnaUK@users.noreply.github.com>
Date: Thu, 9 Jan 2025 04:30:53 +0000
Subject: [PATCH] =?UTF-8?q?=F0=9F=A7=91=E2=80=8D=F0=9F=92=BB=20Add=20STM32?=
 =?UTF-8?q?/STM32F1=20Open=20Drain=20(OD)=20pin=20mode=20(#27616)?=
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---
 Marlin/src/HAL/STM32/fastio.h   | 1 +
 Marlin/src/HAL/STM32F1/fastio.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/Marlin/src/HAL/STM32/fastio.h b/Marlin/src/HAL/STM32/fastio.h
index af2941c49c..a92bbc492e 100644
--- a/Marlin/src/HAL/STM32/fastio.h
+++ b/Marlin/src/HAL/STM32/fastio.h
@@ -77,6 +77,7 @@ void FastIO_init(); // Must be called before using fast io macros
 #define SET_INPUT_PULLUP(IO)    _SET_MODE(IO, INPUT_PULLUP)                       //!< Input with Pull-up activation
 #define SET_INPUT_PULLDOWN(IO)  _SET_MODE(IO, INPUT_PULLDOWN)                     //!< Input with Pull-down activation
 #define SET_OUTPUT(IO)          OUT_WRITE(IO, LOW)
+#define SET_OUTPUT_OD(IO)       OUT_WRITE_OD(IO, LOW)
 #define SET_PWM(IO)             _SET_MODE(IO, PWM)
 
 #define IS_INPUT(IO)
diff --git a/Marlin/src/HAL/STM32F1/fastio.h b/Marlin/src/HAL/STM32F1/fastio.h
index 5b3ebaa52c..8bb986b466 100644
--- a/Marlin/src/HAL/STM32F1/fastio.h
+++ b/Marlin/src/HAL/STM32F1/fastio.h
@@ -44,6 +44,7 @@
 #define SET_INPUT_PULLUP(IO)    _SET_MODE(IO, GPIO_INPUT_PU)
 #define SET_INPUT_PULLDOWN(IO)  _SET_MODE(IO, GPIO_INPUT_PD)
 #define SET_OUTPUT(IO)          OUT_WRITE(IO, LOW)
+#define SET_OUTPUT_OD(IO)       OUT_WRITE_OD(IO, LOW)
 #define SET_PWM(IO)             pinMode(IO, PWM)    // do{ gpio_set_mode(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit, GPIO_AF_OUTPUT_PP); timer_set_mode(PIN_MAP[pin].timer_device, PIN_MAP[pin].timer_channel, TIMER_PWM); }while(0)
 #define SET_PWM_OD(IO)          pinMode(IO, PWM_OPEN_DRAIN)