drivers/gpio.c

@@ -15,11 +15,11 @@
 
 //--local definitions-----------------------------------------------------------
 
+//--local variables-------------------------------------------------------------
+
 static volatile struct GPIO* regs = (struct GPIO*)GPIO_BASE_ADDRESS;
 
 
-//--local variables-------------------------------------------------------------
-
 //--public functions------------------------------------------------------------
 
 /**
@@ -83,6 +83,13 @@ bool gpio_read(enum GpioPort port, enum GpioPin pin_mask)
 	return (regs->PORTS[port].IDR.word & pin_mask) == pin_mask;
 }
 
+void gpio_reset_peripheral(void)
+{
+	rcc_disable(RCC_AHB_NONE, RCC_APB1_NONE, RCC_APB2_IOPA | RCC_APB2_IOPB
+			| RCC_APB2_IOPC | RCC_APB2_IOPD | RCC_APB2_IOPE | RCC_APB2_IOPF
+			| RCC_APB2_IOPG);
+}
+
 
 //--local functions-------------------------------------------------------------
 

drivers/gpio.h

@@ -114,6 +114,12 @@ void gpio_write(enum GpioPort port, enum GpioPin pin_mask, bool value);
  */
 bool gpio_read(enum GpioPort port, enum GpioPin pin_mask);
 
+/**
+ * Resets all gpios and disable all ports. The gpio peripherals are returned to
+ * their reset configuration and their respective clocks disabled
+ */
+void gpio_reset_peripheral(void);
 
-#endif //_RCC_H_
+
+#endif //_GPIO_H_