protocol/bluefruit/main.c

   1 /*
   2 Bluefruit Protocol for TMK firmware
   3 Author: Benjamin Gould, 2013
   4 Based on code Copyright 2011 Jun Wako <wakojun@gmail.com>
   5
   6 This program is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include <stdint.h>
  21 #include <avr/interrupt.h>
  22 #include <avr/wdt.h>
  23 #include <avr/sleep.h>
  24 #include <util/delay.h>
  25 #include "serial.h"
  26 #include "keyboard.h"
  27 #include "usb.h"
  28 #include "host.h"
  29 #include "timer.h"
  30 #include "print.h"
  31 #include "debug.h"
  32 #include "sendchar.h"
  33 #include "suspend.h"
  34 #include "bluefruit.h"
  35 #include "pjrc.h"
  36
  37 #define CPU_PRESCALE(n)    (CLKPR = 0x80, CLKPR = (n))
  38
  39 #define HOST_DRIVER_NOT_SET     0
  40 #define BLUEFRUIT_HOST_DRIVER   1
  41 #define PJRC_HOST_DRIVER        2
  42
  43 int main(void)
  44 {
  45
  46     CPU_PRESCALE(0);
  47
  48     DDRD  = _BV(PD5);
  49     DDRB  = _BV(PB0);
  50
  51     PORTD = _BV(PD5);
  52     PORTB = _BV(PB0);
  53
  54     print_set_sendchar(sendchar);
  55
  56     usb_init();
  57     _delay_ms(2000);
  58     // while (!usb_configured()) /* wait */
  59
  60     dprintf("Initializing keyboard...\n");
  61     keyboard_init();
  62
  63     // This implementation is pretty simplistic... if the USB connection
  64     // is not configured, choose the Bluefruit, otherwise use USB
  65     // Definitely would prefer to have this driven by an input pin and make
  66     // it switch dynamically - BCG
  67     if (!usb_configured()) {
  68
  69         // Send power to Bluefruit... Adafruit says it takes 27 mA, I think
  70         // the pins should provide 40 mA, but just in case I switch the
  71         // Bluefruit using a transistor - BCG
  72         DDRB   = _BV(PB6);
  73         PORTB |= _BV(PB6);
  74
  75         dprintf("Setting host driver to bluefruit...\n");
  76         host_set_driver(bluefruit_driver());
  77
  78         dprintf("Initializing serial...\n");
  79         serial_init();
  80
  81         // wait an extra second for the PC's operating system
  82         // to load drivers and do whatever it does to actually
  83         // be ready for input
  84         _delay_ms(1000);
  85         PORTD = ~_BV(PD5);
  86         dprintf("Starting main loop");
  87         while (1) {
  88             keyboard_task();
  89         }
  90
  91     } else {
  92
  93         // I'm not smart enough to get this done with LUFA - BCG
  94         dprintf("Setting host driver to PJRC...\n");
  95         host_set_driver(pjrc_driver());
  96 #ifdef SLEEP_LED_ENABLE
  97     sleep_led_init();
  98 #endif
  99         // wait an extra second for the PC's operating system
 100         // to load drivers and do whatever it does to actually
 101         // be ready for input
 102         _delay_ms(1000);
 103         PORTB = ~_BV(PB0);
 104         dprintf("Starting main loop");
 105         while (1) {
 106             while (suspend) {
 107                 suspend_power_down();
 108                 if (remote_wakeup && suspend_wakeup_condition()) {
 109                     usb_remote_wakeup();
 110                 }
 111             }
 112             keyboard_task();
 113         }
 114     }
 115
 116 }