GuzuntyPi testing 16o8i core

GuzuntyPi testing 16o8i core


/*
 * gz_16o8i.c
 * 
 * Copyright 2013  guzunty
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 * 
 * This program demonstrates and tests the capabilities of the
 * gz_16o8i core. 16 outputs, 8 inputs.
 *
 */
#include <unistd.h>
#include <time.h>
#include <ncurses.h>
#include <gz_spi.h>

void exercise_outputs(unsigned int a, unsigned int b) {
  unsigned char output[2];
  output[1] = (a & 0xff00) >> 8;
  output[0] = (a & 0x00ff);
  gz_spi_write(output);          // pass output bytes to SPI
  usleep(100000);
  output[1] = (b & 0xff00) >> 8;
  output[0] = (b & 0x00ff);
  gz_spi_write(output);          // pass output bytes to SPI
  usleep(100000);
}

void display_inputs() {
  int row, col;
  unsigned char inputs[2];
  getmaxyx(stdscr, row, col); /* get the screen boundaries */
  int center_x = col / 2;
  int center_y = row / 2;
  int start_y = center_y - 2;
  int start_x = center_x - 16;
  mvprintw(start_y, center_x - 8, "Input bit status");
  start_y++;
  mvprintw(start_y, start_x, "F E D C B A 9 8 7 6 5 4 3 2 1 0");
  gz_spi_read(inputs);
  unsigned char mask = 0x01;
  int i = 0;
  for (; i < 8; i++) {
 int cur_byte = 0;
 if (i > 7) {
 cur_byte = 1;
 }
 if (inputs[cur_byte] & mask) {
 mvprintw(center_y, start_x + 30 - (2 * i), "1");
 }
 else {
 mvprintw(center_y, start_x + 30 - (2 * i), "0");
 }
 mask = mask << 1;
  }
}

int main(int argc, char* argv[])
{
    initscr();                        // initialize ncurses display
    nodelay(stdscr, 1);               // don't wait for key presses
    noecho();                         // don't echo key presses
    gz_spi_set_width(2);              // Pass blocks of 2 bytes on SPI
    erase();
    printw("Toggling all outputs.\n");
printw("Press 'n' for next test, any other key to stop.\n");
int key = 0;
    while(1) {
 exercise_outputs(0xffff, 0x0000);
      key = getch();
      if (key != -1) {
 break;
 }
}
if (key == 'n') {
 erase();
      printw("Toggling alternate outputs.\n");
 printw("Press 'n' for next test, any other key to stop.\n");
      while(1) {
exercise_outputs(0xaaaa, 0x5555);
        key = getch();
        if (key != -1) {
 break;
   }
 }
}
if (key == 'n') {
 erase();
      printw("Walking outputs.\n");
 printw("Press 'n' for next test, any other key to stop.\n");
 unsigned int current = 0xfffe;
      while(1) {
exercise_outputs(current, (current << 1) | 0x0001);
current = (current << 2) | 0x03;
if ((current & 0xffff) == 0xffff) {
current = 0xfffe;
   }
        key = getch();
        if (key != -1) {
 break;
   }
 }
}
if (key == 'n') {
 erase();
 curs_set(0);                     // Hide the cursor
      printw("Reading inputs.\n");
 printw("Press any key to stop.\n");
      while(1) {
display_inputs();
        key = getch();
        if (key != -1) {
 break;
   }
 }
 move(getcury(stdscr) + 1 ,0);
 curs_set(1);
 refresh();
}
    gz_spi_close();                   // close SPI channel
    reset_shell_mode();               // turn off ncurses
    return 0;
}

.END