From 4186e389764aa47d7d387bf9c60dc4ebc8e4a22b Mon Sep 17 00:00:00 2001
From: DipSwitch <dipswitch@ownage4u.nl>
Date: Fri, 6 Nov 2015 16:57:10 +0100
Subject: [PATCH] stm32f1/gpio: pin direction readout of gpio_read was invalid
---
cpu/stm32f1/periph/gpio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cpu/stm32f1/periph/gpio.c b/cpu/stm32f1/periph/gpio.c
index 58e8c57044..b4a916e905 100644
--- a/cpu/stm32f1/periph/gpio.c
+++ b/cpu/stm32f1/periph/gpio.c
@@ -170,7 +170,7 @@ int gpio_read(gpio_t pin)
GPIO_TypeDef *port = _port(pin);
int pin_num = _pin_num(pin);
- if (port->CR[pin_num >> 3] & (0x3 << (pin_num & 0x7))) {
+ if (port->CR[pin_num >> 3] & (0x3 << ((pin_num & 0x7) << 2))) {
/* pin is output */
return (port->ODR & (1 << pin_num));
}
--
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