projects / sigrok-firmware-fx2lafw.git / blame
| Commit | Line | Data |
|---|---|---|
| 3608c106 UH |
1 | /** |
| 2 | * Copyright (C) 2009 Ubixum, Inc. | |
| 3 | * | |
| 4 | * This library is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU Lesser General Public | |
| 6 | * License as published by the Free Software Foundation; either | |
| 7 | * version 2.1 of the License, or (at your option) any later version. | |
| 8 | * | |
| 9 | * This library is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | * Lesser General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU Lesser General Public | |
| 15 | * License along with this library; if not, write to the Free Software | |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 17 | **/ | |
| 18 | ||
| 19 | ||
| 20 | ||
| 21 | #include <fx2regs.h> | |
| 22 | ||
| 23 | #include <i2c.h> | |
| 24 | ||
| 25 | #define LED_ADDR 0x21 | |
| 26 | #define BTN_ADDR 0x20 | |
| 27 | ||
| 28 | #define KEY_F1 0 | |
| 29 | #define KEY_F2 1 | |
| 30 | #define KEY_F3 2 | |
| 31 | #define KEY_F4 3 | |
| 32 | ||
| 33 | ||
| 34 | BYTE digits[] = { 0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x98, 0x88, 0x83, 0xc6, 0xa1, 0x86, 0x8e }; | |
| 35 | ||
| 36 | ||
| 37 | /** | |
| 38 | * This is pretty much the same function that is provided as the dev_io example from Cypress | |
| 39 | * Except is uses i2c read and write functions not from their library | |
| 40 | **/ | |
| 41 | void main(void) { | |
| 42 | ||
| 43 | BYTE num = 0; | |
| 44 | //BYTE xdata buttons; | |
| 45 | BYTE buttons; | |
| 46 | BYTE kstates = 0xff; | |
| 47 | BYTE kdeltas; | |
| 48 | BYTE key; | |
| 49 | BYTE display = 1; | |
| 50 | ||
| 51 | while(1) | |
| 52 | { | |
| 53 | i2c_read ( BTN_ADDR, 1, &buttons ); | |
| 54 | ||
| 55 | kdeltas = kstates ^ buttons; // | |
| 56 | kstates = buttons; | |
| 57 | key = 0; | |
| 58 | ||
| 59 | while(kdeltas) | |
| 60 | { | |
| 61 | if(kdeltas & 0x01) | |
| 62 | { | |
| 63 | if(!((kstates >> key) & 0x01)) | |
| 64 | switch(key) | |
| 65 | { | |
| 66 | case KEY_F1: // wakeup? | |
| 67 | num = 0; | |
| 68 | break; | |
| 69 | case KEY_F2: | |
| 70 | if(--num > 0x0f) | |
| 71 | num = 0x0f; | |
| 72 | break; | |
| 73 | case KEY_F3: | |
| 74 | if(++num > 0x0f) | |
| 75 | num = 0; | |
| 76 | break; | |
| 77 | case KEY_F4: | |
| 78 | num = 0x0f; | |
| 79 | } | |
| 80 | display = 1; | |
| 81 | } | |
| 82 | kdeltas = kdeltas >> 1; | |
| 83 | ++key; | |
| 84 | } | |
| 85 | if(display) | |
| 86 | { | |
| 87 | i2c_write ( LED_ADDR, 1, &digits[num], 0, NULL ); | |
| 88 | display = 0; | |
| 89 | } | |
| 90 | } | |
| 91 | ||
| 92 | } |