--- /dev/null
+/**************************************************************************/
+/*!
+ @file main.c
+ @author K. Townsend (microBuilder.eu)
+
+ @section LICENSE
+
+ Software License Agreement (BSD License)
+
+ Copyright (c) 2011, microBuilder SARL
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the copyright holders nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+ EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/**************************************************************************/
+#include "projectconfig.h"
+
+#include "core/gpio/gpio.h"
+
+/**************************************************************************/
+/*!
+ As soon as the chip comes out of reset and the startup code has
+ finished executing, sets up GPIO pin 2.1 as an ouput and high.
+
+ This can be used to determine the startup delay, by measuring the
+ time between reset be deasserted and the GPIO pin going high, minus
+ the GPIO overhead of a few clock cycles.
+
+ HW Setup: Set channel one of the oscilliscope to the reset pin, and
+ channel two of the oscilliscope to GPIO pin 2.1.
+
+ Set a trigger on the rising edge of the reset pin, and
+ measure the delay between the rising edge of reset and the
+ rising edge of GPIO 2.1.
+*/
+/**************************************************************************/
+int main(void)
+{
+ /* Enable AHB clock to the GPIO domain. */
+ SCB_SYSAHBCLKCTRL |= (SCB_SYSAHBCLKCTRL_GPIO);
+
+ /* Set 2.1 to output and high */
+ GPIO_GPIO2DIR |= (1 << 1); // pin 1 = Output
+ GPIO_GPIO2DATA |= (1 << 1); // pin 1 = High
+
+ while(1)
+ {
+ }
+
+ return 0;
+}