From 3bef8767f966eaa960a3dfc5609a3952f4b00627 Mon Sep 17 00:00:00 2001
From: Uwe Hermann <uwe@hermann-uwe.de>
Date: Sat, 18 Jul 2009 17:41:31 +0200
Subject: [PATCH] Add gpio_get() API function.

---
 include/libopenstm32/gpio.h | 1 +
 lib/gpio.c                  | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/libopenstm32/gpio.h b/include/libopenstm32/gpio.h
index 89018b9a..f808c93b 100644
--- a/include/libopenstm32/gpio.h
+++ b/include/libopenstm32/gpio.h
@@ -140,6 +140,7 @@
 void gpio_set_mode(u32 gpioport, u8 mode, u8 cnf, u16 gpios);
 void gpio_set(u32 gpioport, u16 gpios);
 void gpio_clear(u32 gpioport, u16 gpios);
+u16 gpio_get(u32 gpioport, u16 gpios);
 void gpio_toggle(u32 gpioport, u16 gpios);
 u16 gpio_port_read(u32 gpioport);
 void gpio_port_write(u32 gpioport, u16 data);
diff --git a/lib/gpio.c b/lib/gpio.c
index e9f90ca5..2ade8424 100644
--- a/lib/gpio.c
+++ b/lib/gpio.c
@@ -25,6 +25,7 @@
  *                GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
  *  gpio_set(GPIOB, GPIO4);
  *  gpio_clear(GPIOG, GPIO2 | GPIO9);
+ *  gpio_get(GPIOC, GPIO1);
  *  gpio_toggle(GPIOA, GPIO7);
  *  reg16 = gpio_port_read(GPIOD);
  *  gpio_port_write(GPIOF, 0xc8fe);
@@ -66,6 +67,11 @@ void gpio_clear(u32 gpioport, u16 gpios)
 	GPIO_BRR(gpioport) = gpios;
 }
 
+u16 gpio_get(u32 gpioport, u16 gpios)
+{
+	return gpio_port_read(gpioport) & gpios;
+}
+
 /* TODO: Should work for multiple GPIOs? */
 void gpio_toggle(u32 gpioport, u16 gpio)
 {