From 031eda1d7e36c3ae231104028b652eb35d7ce44c Mon Sep 17 00:00:00 2001
From: Silvano Seva <silseva@fastwebnet.it>
Date: Wed, 17 Jul 2024 19:07:10 +0200
Subject: [PATCH] STM32F4xx: fixed bug in gpio driver

Fixed bug causing gpios set in alternate function mode to have the internal
pull-up resistor enabled, even if not requested.
---
 platform/mcu/STM32F4xx/drivers/gpio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform/mcu/STM32F4xx/drivers/gpio.c b/platform/mcu/STM32F4xx/drivers/gpio.c
index d6763c25..f5cc2935 100644
--- a/platform/mcu/STM32F4xx/drivers/gpio.c
+++ b/platform/mcu/STM32F4xx/drivers/gpio.c
@@ -98,7 +98,7 @@ void gpio_setMode(const void *port, const uint8_t pin, const uint16_t mode)
             // (MODE=10 TYPE=0 PUP=00)
             p->MODER  |= 0x02 << (pin*2);
             p->OTYPER |= 0x00 << pin;
-            p->PUPDR  |= 0x01 << (pin*2);
+            p->PUPDR  |= 0x00 << (pin*2);
             setGpioAf(p, pin, af);
             break;