//
// Gertboard test suite
//
// main header file
//
// Copyright (C) Gert Jan van Loo & Myra VanInwegen 2012
// No rights reserved
// You may treat this program as if it was in the public domain
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 OR CONTRIBUTORS 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.
//
// Try to strike a balance between keep code simple for
// novice programmers but still have reasonable quality code
// (e.g. do not use #ifndef big_demo_h....)
//


#include <stdio.h>

// I/O access
extern volatile unsigned *gpio;
extern volatile unsigned *pwm;
extern volatile unsigned *clk;
extern volatile unsigned *spi0;
extern volatile unsigned *uart;

void short_wait();
void long_wait(int v);

void setup_io();
void restore_io();
void make_binary_string(int, int, char *);

// GPIO setup macros. 
// Always use INP_GPIO(x) before using OUT_GPIO(x) or SET_GPIO_ALT(x,y)
#define INP_GPIO(g) *(gpio+((g)/10)) &= ~(7<<(((g)%10)*3))
#define OUT_GPIO(g) *(gpio+((g)/10)) |=  (1<<(((g)%10)*3))
#define SET_GPIO_ALT(g,a) *(gpio+(((g)/10))) |= (((a)<=3?(a)+4:(a)==4?3:2)<<(((g)%10)*3))

#define GPIO_SET0   *(gpio+7)  // Set GPIO high bits 0-31
#define GPIO_CLR0   *(gpio+10) // Set GPIO low bits 0-31

#define GPIO_IN0   *(gpio+13)  // Reads GPIO input bits 0-31

#define GPIO_PULL   *(gpio+37) // Pull up/pull down
#define GPIO_PULLCLK0 *(gpio+38) // Pull up/pull down clock


//
//  UART 0
//

#define UART0_BAUD_HI *(uart+9)
#define UART0_BAUD_LO *(uart+10)