Wim Huiskamp
Libraries and Example of mbed parallel bus using I2C port expanders
Dependencies: HDSP253X mbed PCF8574_Bus
MBED_ControlBus.cpp@2:1dab1089c332, 2011-08-20 (annotated)
- Committer:
- wim
- Date:
- Sat Aug 20 12:49:44 2011 +0000
- Revision:
- 2:1dab1089c332
- Child:
- 6:aaefa04f06be
First commit, testloop
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| wim |
2:1dab1089c332 | 1 | /* MBED_ControlBus - Use MBED Port Pins for controlling the external Bus |
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2:1dab1089c332 | 2 | * Copyright (c) 2011 Wim Huiskamp |
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2:1dab1089c332 | 3 | * |
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2:1dab1089c332 | 4 | * Released under the MIT License: http://mbed.org/license/mit |
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2:1dab1089c332 | 5 | * |
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2:1dab1089c332 | 6 | * version 0.2 Initial Release |
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2:1dab1089c332 | 7 | */ |
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2:1dab1089c332 | 8 | #include "mbed.h" |
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2:1dab1089c332 | 9 | #include "MBED_ControlBus.h" |
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2:1dab1089c332 | 10 | |
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2:1dab1089c332 | 11 | //Debounce and Edge detecting stuff |
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2:1dab1089c332 | 12 | #include "PinDetect.h" |
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2:1dab1089c332 | 13 | //#define __DIGITAL_IN |
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2:1dab1089c332 | 14 | //#define __INTERRUPT_IN |
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2:1dab1089c332 | 15 | #define __PINDETECT_IN |
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2:1dab1089c332 | 16 | |
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2:1dab1089c332 | 17 | |
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2:1dab1089c332 | 18 | |
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2:1dab1089c332 | 19 | |
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2:1dab1089c332 | 20 | /** Create an MBED_ControlBus object connected to the specified Pins |
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2:1dab1089c332 | 21 | * |
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2:1dab1089c332 | 22 | * @param PinName WR the Write pin |
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2:1dab1089c332 | 23 | * @param PinName RD the Read pin |
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2:1dab1089c332 | 24 | * @param PinName DTR the databuffer Transmit/Receive direction pin |
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2:1dab1089c332 | 25 | * @param PinName CDBUF the databuffer enable pin |
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2:1dab1089c332 | 26 | * @param PinName CDINT the Keyboard interrupt pin |
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2:1dab1089c332 | 27 | * @param PinName FIRE the Manual Fire Unit pin |
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2:1dab1089c332 | 28 | */ |
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2:1dab1089c332 | 29 | MBED_ControlBus::MBED_ControlBus(PinName WR, PinName RD, PinName DTR, PinName CDBUF, PinName CDINT, PinName FIRE) : |
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2:1dab1089c332 | 30 | _WR(WR), // WR pin |
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2:1dab1089c332 | 31 | _RD(RD), // RD pin |
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2:1dab1089c332 | 32 | _DTR(DTR), // DTR pin |
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2:1dab1089c332 | 33 | _CDBUF(CDBUF), // CDBUF pin |
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2:1dab1089c332 | 34 | _CDINT(CDINT), // CDINT pin |
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2:1dab1089c332 | 35 | _FIRE(FIRE) { // FIRE pin |
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2:1dab1089c332 | 36 | _init(); |
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2:1dab1089c332 | 37 | } |
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2:1dab1089c332 | 38 | |
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2:1dab1089c332 | 39 | |
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2:1dab1089c332 | 40 | /** Set or Clear the WR pin on Control Bus |
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2:1dab1089c332 | 41 | * |
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2:1dab1089c332 | 42 | * @param Bit_Level wr_level |
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2:1dab1089c332 | 43 | */ |
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2:1dab1089c332 | 44 | void MBED_ControlBus::WR (Bit_Level wr_level) { |
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2:1dab1089c332 | 45 | |
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2:1dab1089c332 | 46 | if (wr_level == LOW) { |
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2:1dab1089c332 | 47 | // Make sure that databus buffer is enabled for Write |
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2:1dab1089c332 | 48 | //busctrl(ENABLE, WRITE); |
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2:1dab1089c332 | 49 | |
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2:1dab1089c332 | 50 | _RD = 1; // RD Pin High, make sure there is no collision |
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2:1dab1089c332 | 51 | _WR = 0; // WR Pin Low |
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2:1dab1089c332 | 52 | } |
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2:1dab1089c332 | 53 | else { |
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2:1dab1089c332 | 54 | _WR = 1; // WR Pin High |
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2:1dab1089c332 | 55 | } |
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2:1dab1089c332 | 56 | } |
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2:1dab1089c332 | 57 | |
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2:1dab1089c332 | 58 | |
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2:1dab1089c332 | 59 | /** Set or Clear the RD pin on Control Bus |
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2:1dab1089c332 | 60 | * |
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2:1dab1089c332 | 61 | * @param Bit_Level rd_level |
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2:1dab1089c332 | 62 | */ |
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2:1dab1089c332 | 63 | void MBED_ControlBus::RD (Bit_Level rd_level) { |
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2:1dab1089c332 | 64 | |
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2:1dab1089c332 | 65 | if (rd_level == LOW) { |
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2:1dab1089c332 | 66 | // Make sure that databus buffer is enabled for Read |
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2:1dab1089c332 | 67 | //busctrl(ENABLE, READ); |
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2:1dab1089c332 | 68 | |
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2:1dab1089c332 | 69 | _WR = 1; // WR Pin High, make sure there is no collision |
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2:1dab1089c332 | 70 | _RD = 0; // RD Pin Low |
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2:1dab1089c332 | 71 | } |
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2:1dab1089c332 | 72 | else { |
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2:1dab1089c332 | 73 | _RD = 1; // RD Pin High |
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2:1dab1089c332 | 74 | } |
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2:1dab1089c332 | 75 | } |
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2:1dab1089c332 | 76 | |
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2:1dab1089c332 | 77 | |
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2:1dab1089c332 | 78 | /** Enable databus buffer for Write or Read |
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2:1dab1089c332 | 79 | * |
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2:1dab1089c332 | 80 | * @param Bus_Dir buf_dir |
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2:1dab1089c332 | 81 | */ |
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2:1dab1089c332 | 82 | void MBED_ControlBus::busdir (Bus_Dir buf_dir) { |
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2:1dab1089c332 | 83 | |
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2:1dab1089c332 | 84 | if (buf_dir == READ) { |
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2:1dab1089c332 | 85 | // Make sure that databus buffer is enabled for READ |
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2:1dab1089c332 | 86 | _DTR = 0; // DTR Pin Low, Read Direction |
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2:1dab1089c332 | 87 | _CDBUF = 0; // CDBUF Pin Low, Enable Buffer |
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2:1dab1089c332 | 88 | } |
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2:1dab1089c332 | 89 | else { |
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2:1dab1089c332 | 90 | // Make sure that databus buffer is enabled for Write |
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2:1dab1089c332 | 91 | _DTR = 1; // DTR Pin High, Write Direction |
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2:1dab1089c332 | 92 | _CDBUF = 0; // CDBUF Pin Low, Enable Buffer |
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2:1dab1089c332 | 93 | } |
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2:1dab1089c332 | 94 | } |
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2:1dab1089c332 | 95 | |
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2:1dab1089c332 | 96 | |
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2:1dab1089c332 | 97 | /** Enable/Disable databus buffer and control Write or Read Direction |
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2:1dab1089c332 | 98 | * |
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2:1dab1089c332 | 99 | * @param Bus_Ena buf_ena |
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2:1dab1089c332 | 100 | * @param Bus_Dir buf_dir |
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2:1dab1089c332 | 101 | */ |
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2:1dab1089c332 | 102 | void MBED_ControlBus::busctrl (Bus_Ena buf_ena, Bus_Dir buf_dir) { |
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2:1dab1089c332 | 103 | |
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2:1dab1089c332 | 104 | if (buf_ena == ENABLE) { |
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2:1dab1089c332 | 105 | _CDBUF = 0; // CDBUF Pin Low, Enable Buffer |
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2:1dab1089c332 | 106 | } |
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2:1dab1089c332 | 107 | else { |
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2:1dab1089c332 | 108 | _CDBUF = 1; // CDBUF Pin High, Disable Buffer |
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2:1dab1089c332 | 109 | } |
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2:1dab1089c332 | 110 | |
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2:1dab1089c332 | 111 | if (buf_dir == READ) { |
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2:1dab1089c332 | 112 | _DTR = 0; // DTR Pin Low, Read Direction |
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2:1dab1089c332 | 113 | } |
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2:1dab1089c332 | 114 | else { |
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2:1dab1089c332 | 115 | _DTR = 1; // DTR Pin High, Write Direction |
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2:1dab1089c332 | 116 | } |
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2:1dab1089c332 | 117 | } |
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2:1dab1089c332 | 118 | |
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2:1dab1089c332 | 119 | |
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2:1dab1089c332 | 120 | #ifdef __DIGITAL_IN |
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2:1dab1089c332 | 121 | /** Get the CDINT pin value from Control Bus |
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2:1dab1089c332 | 122 | * |
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2:1dab1089c332 | 123 | * @returns Bit_Level CDINT_level |
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2:1dab1089c332 | 124 | */ |
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2:1dab1089c332 | 125 | Bit_Level MBED_ControlBus::CDINT () { |
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2:1dab1089c332 | 126 | |
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2:1dab1089c332 | 127 | // CDINT Pin value, used as regular Pin rather than as interrupt |
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2:1dab1089c332 | 128 | if (_CDINT == 0) |
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2:1dab1089c332 | 129 | return LOW; |
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2:1dab1089c332 | 130 | else |
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2:1dab1089c332 | 131 | return HIGH; |
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2:1dab1089c332 | 132 | } |
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2:1dab1089c332 | 133 | |
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2:1dab1089c332 | 134 | /** Get the FIRE pin value from Control Bus |
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2:1dab1089c332 | 135 | * |
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2:1dab1089c332 | 136 | * @returns Bit_Level FIRE_level |
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2:1dab1089c332 | 137 | */ |
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2:1dab1089c332 | 138 | Bit_Level MBED_ControlBus::FIRE() { |
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2:1dab1089c332 | 139 | |
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2:1dab1089c332 | 140 | // FIRE Pin value, used as regular Pin rather than as interrupt |
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2:1dab1089c332 | 141 | if (_FIRE == 0) |
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2:1dab1089c332 | 142 | return LOW; |
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2:1dab1089c332 | 143 | else |
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2:1dab1089c332 | 144 | return HIGH; |
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2:1dab1089c332 | 145 | } |
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2:1dab1089c332 | 146 | |
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2:1dab1089c332 | 147 | /** Setup debouncing and edge detection on the CDINT pin |
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2:1dab1089c332 | 148 | * |
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2:1dab1089c332 | 149 | * @returns |
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2:1dab1089c332 | 150 | */ |
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2:1dab1089c332 | 151 | void MBED_ControlBus::_CDINT_init() { |
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2:1dab1089c332 | 152 | } |
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2:1dab1089c332 | 153 | |
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2:1dab1089c332 | 154 | /** Setup debouncing and edge detection on the FIRE pin |
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2:1dab1089c332 | 155 | * |
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2:1dab1089c332 | 156 | * @returns |
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2:1dab1089c332 | 157 | */ |
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2:1dab1089c332 | 158 | void MBED_ControlBus::_FIRE_init() { |
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2:1dab1089c332 | 159 | } |
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2:1dab1089c332 | 160 | #endif //__DIGITAL_IN |
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2:1dab1089c332 | 161 | |
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2:1dab1089c332 | 162 | |
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2:1dab1089c332 | 163 | |
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2:1dab1089c332 | 164 | #ifdef __INTERRUPT_IN |
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2:1dab1089c332 | 165 | /** Get the CDINT pin value from Control Bus |
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2:1dab1089c332 | 166 | * |
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2:1dab1089c332 | 167 | * @returns Bit_Level CDINT_detected |
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2:1dab1089c332 | 168 | */ |
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2:1dab1089c332 | 169 | Bit_Level MBED_ControlBus::CDINT () { |
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2:1dab1089c332 | 170 | |
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2:1dab1089c332 | 171 | // CDINT pin has been Debounced and Edge detected |
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2:1dab1089c332 | 172 | // Respond only once for every keypress |
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2:1dab1089c332 | 173 | if (_CDINT_detected) { |
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2:1dab1089c332 | 174 | _CDINT_detected = false; |
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2:1dab1089c332 | 175 | return HIGH; |
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2:1dab1089c332 | 176 | } |
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2:1dab1089c332 | 177 | else { |
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2:1dab1089c332 | 178 | return LOW; |
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2:1dab1089c332 | 179 | } |
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2:1dab1089c332 | 180 | } |
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2:1dab1089c332 | 181 | |
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2:1dab1089c332 | 182 | /** Get the FIRE pin value from Control Bus |
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2:1dab1089c332 | 183 | * |
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2:1dab1089c332 | 184 | * @returns Bit_Level FIRE_detected |
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2:1dab1089c332 | 185 | */ |
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2:1dab1089c332 | 186 | Bit_Level MBED_ControlBus::FIRE() { |
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2:1dab1089c332 | 187 | |
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2:1dab1089c332 | 188 | // FIRE pin has been Debounced and Edge detected |
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2:1dab1089c332 | 189 | // Respond only once for every keypress |
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2:1dab1089c332 | 190 | if (_FIRE_detected) { |
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2:1dab1089c332 | 191 | _FIRE_detected = false; |
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2:1dab1089c332 | 192 | return HIGH; |
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2:1dab1089c332 | 193 | } |
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2:1dab1089c332 | 194 | else { |
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2:1dab1089c332 | 195 | return LOW; |
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2:1dab1089c332 | 196 | } |
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2:1dab1089c332 | 197 | } |
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2:1dab1089c332 | 198 | |
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2:1dab1089c332 | 199 | |
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2:1dab1089c332 | 200 | /** Called on detection of a rising edge at the CDINT pin |
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2:1dab1089c332 | 201 | * |
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2:1dab1089c332 | 202 | * @returns |
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2:1dab1089c332 | 203 | */ |
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2:1dab1089c332 | 204 | void MBED_ControlBus::_CDINT_activated(void) { |
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2:1dab1089c332 | 205 | _CDINT_detected = true; |
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2:1dab1089c332 | 206 | } |
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2:1dab1089c332 | 207 | |
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2:1dab1089c332 | 208 | |
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2:1dab1089c332 | 209 | /** Called on detection of a rising edge at the FIRE pin |
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2:1dab1089c332 | 210 | * |
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2:1dab1089c332 | 211 | * @returns |
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2:1dab1089c332 | 212 | */ |
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2:1dab1089c332 | 213 | void MBED_ControlBus::_FIRE_activated(void) { |
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2:1dab1089c332 | 214 | _FIRE_detected = true; |
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2:1dab1089c332 | 215 | } |
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2:1dab1089c332 | 216 | |
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2:1dab1089c332 | 217 | |
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2:1dab1089c332 | 218 | /** Setup simple edge detection on the CDINT pin |
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2:1dab1089c332 | 219 | * |
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2:1dab1089c332 | 220 | * @returns |
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2:1dab1089c332 | 221 | */ |
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2:1dab1089c332 | 222 | void MBED_ControlBus::_CDINT_init() { |
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2:1dab1089c332 | 223 | // Setup the callback function |
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2:1dab1089c332 | 224 | _CDINT.mode(PullDown); |
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2:1dab1089c332 | 225 | _CDINT.rise(this, &MBED_ControlBus::_CDINT_activated); |
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2:1dab1089c332 | 226 | |
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2:1dab1089c332 | 227 | // Init the edge detection boolean |
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2:1dab1089c332 | 228 | _CDINT_detected = false; |
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2:1dab1089c332 | 229 | } |
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2:1dab1089c332 | 230 | |
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2:1dab1089c332 | 231 | /** Setup simple edge detection on the FIRE pin |
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2:1dab1089c332 | 232 | * |
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2:1dab1089c332 | 233 | * @returns |
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2:1dab1089c332 | 234 | */ |
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2:1dab1089c332 | 235 | void MBED_ControlBus::_FIRE_init() { |
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2:1dab1089c332 | 236 | // Setup the callback function |
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2:1dab1089c332 | 237 | _FIRE.mode(PullDown); |
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2:1dab1089c332 | 238 | _FIRE.rise(this, &MBED_ControlBus::_FIRE_activated); |
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2:1dab1089c332 | 239 | |
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2:1dab1089c332 | 240 | // Init the edge detection boolean |
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2:1dab1089c332 | 241 | _FIRE_detected = false; |
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2:1dab1089c332 | 242 | } |
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2:1dab1089c332 | 243 | |
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2:1dab1089c332 | 244 | /** Setup debouncing and edge detection on the CDINT pin |
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2:1dab1089c332 | 245 | * |
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2:1dab1089c332 | 246 | * @returns |
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2:1dab1089c332 | 247 | */ |
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2:1dab1089c332 | 248 | void MBED_ControlBus::_CDINT_init() { |
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2:1dab1089c332 | 249 | } |
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2:1dab1089c332 | 250 | |
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2:1dab1089c332 | 251 | /** Setup debouncing and edge detection on the FIRE pin |
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2:1dab1089c332 | 252 | * |
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2:1dab1089c332 | 253 | * @returns |
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2:1dab1089c332 | 254 | */ |
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2:1dab1089c332 | 255 | void MBED_ControlBus::_FIRE_init() { |
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2:1dab1089c332 | 256 | } |
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2:1dab1089c332 | 257 | #endif //__INTERRUPT_IN |
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2:1dab1089c332 | 258 | |
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2:1dab1089c332 | 259 | |
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2:1dab1089c332 | 260 | |
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2:1dab1089c332 | 261 | #ifdef __PINDETECT_IN |
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2:1dab1089c332 | 262 | /** Get the CDINT pin value from Control Bus |
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2:1dab1089c332 | 263 | * |
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2:1dab1089c332 | 264 | * @returns Bit_Level CDINT_detected |
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2:1dab1089c332 | 265 | */ |
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2:1dab1089c332 | 266 | Bit_Level MBED_ControlBus::CDINT () { |
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2:1dab1089c332 | 267 | |
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2:1dab1089c332 | 268 | // CDINT pin has been Debounced and Edge detected |
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2:1dab1089c332 | 269 | // Respond only once for every keypress |
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2:1dab1089c332 | 270 | if (_CDINT_detected) { |
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2:1dab1089c332 | 271 | _CDINT_detected = false; |
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2:1dab1089c332 | 272 | return HIGH; |
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2:1dab1089c332 | 273 | } |
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2:1dab1089c332 | 274 | else { |
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2:1dab1089c332 | 275 | return LOW; |
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2:1dab1089c332 | 276 | } |
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2:1dab1089c332 | 277 | } |
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2:1dab1089c332 | 278 | |
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2:1dab1089c332 | 279 | /** Get the FIRE pin value from Control Bus |
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2:1dab1089c332 | 280 | * |
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2:1dab1089c332 | 281 | * @returns Bit_Level FIRE_detected |
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2:1dab1089c332 | 282 | */ |
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2:1dab1089c332 | 283 | Bit_Level MBED_ControlBus::FIRE() { |
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2:1dab1089c332 | 284 | |
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2:1dab1089c332 | 285 | // FIRE pin has been Debounced and Edge detected |
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2:1dab1089c332 | 286 | // Respond only once for every keypress |
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2:1dab1089c332 | 287 | if (_FIRE_detected) { |
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2:1dab1089c332 | 288 | _FIRE_detected = false; |
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2:1dab1089c332 | 289 | return HIGH; |
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2:1dab1089c332 | 290 | } |
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2:1dab1089c332 | 291 | else { |
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2:1dab1089c332 | 292 | return LOW; |
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2:1dab1089c332 | 293 | } |
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2:1dab1089c332 | 294 | } |
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2:1dab1089c332 | 295 | |
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2:1dab1089c332 | 296 | /** Called on detection of a rising edge at the CDINT pin |
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2:1dab1089c332 | 297 | * |
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2:1dab1089c332 | 298 | * @returns |
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2:1dab1089c332 | 299 | */ |
| wim |
2:1dab1089c332 | 300 | void MBED_ControlBus::_CDINT_activated(void) { |
| wim |
2:1dab1089c332 | 301 | _CDINT_detected = true; |
| wim |
2:1dab1089c332 | 302 | } |
| wim |
2:1dab1089c332 | 303 | |
| wim |
2:1dab1089c332 | 304 | /** Called on detection of a falling edge at the CDINT pin |
| wim |
2:1dab1089c332 | 305 | * |
| wim |
2:1dab1089c332 | 306 | * @returns |
| wim |
2:1dab1089c332 | 307 | */ |
| wim |
2:1dab1089c332 | 308 | void MBED_ControlBus::_CDINT_deactivated(void) { |
| wim |
2:1dab1089c332 | 309 | _CDINT_detected = false; |
| wim |
2:1dab1089c332 | 310 | } |
| wim |
2:1dab1089c332 | 311 | |
| wim |
2:1dab1089c332 | 312 | /** Called on detection of a rising edge at the FIRE pin |
| wim |
2:1dab1089c332 | 313 | * |
| wim |
2:1dab1089c332 | 314 | * @returns |
| wim |
2:1dab1089c332 | 315 | */ |
| wim |
2:1dab1089c332 | 316 | void MBED_ControlBus::_FIRE_activated(void) { |
| wim |
2:1dab1089c332 | 317 | _FIRE_detected = true; |
| wim |
2:1dab1089c332 | 318 | } |
| wim |
2:1dab1089c332 | 319 | |
| wim |
2:1dab1089c332 | 320 | /** Called on detection of a falling edge at the FIRE pin |
| wim |
2:1dab1089c332 | 321 | * |
| wim |
2:1dab1089c332 | 322 | * @returns |
| wim |
2:1dab1089c332 | 323 | */ |
| wim |
2:1dab1089c332 | 324 | void MBED_ControlBus::_FIRE_deactivated(void) { |
| wim |
2:1dab1089c332 | 325 | _FIRE_detected = false; |
| wim |
2:1dab1089c332 | 326 | } |
| wim |
2:1dab1089c332 | 327 | |
| wim |
2:1dab1089c332 | 328 | /** Setup debouncing and edge detection on the CDINT pin |
| wim |
2:1dab1089c332 | 329 | * |
| wim |
2:1dab1089c332 | 330 | * @returns |
| wim |
2:1dab1089c332 | 331 | */ |
| wim |
2:1dab1089c332 | 332 | void MBED_ControlBus::_CDINT_init() { |
| wim |
2:1dab1089c332 | 333 | |
| wim |
2:1dab1089c332 | 334 | // Setup the callback functions |
| wim |
2:1dab1089c332 | 335 | _CDINT.mode(PullDown); |
| wim |
2:1dab1089c332 | 336 | _CDINT.attach_asserted(this, &MBED_ControlBus::_CDINT_activated); |
| wim |
2:1dab1089c332 | 337 | _CDINT.attach_deasserted(this, &MBED_ControlBus::_CDINT_deactivated); |
| wim |
2:1dab1089c332 | 338 | // _CDINT.attach_asserted_held( &keyPressedHeld ); |
| wim |
2:1dab1089c332 | 339 | // _CDINT.attach_deasserted_held( &keyReleasedHeld ); |
| wim |
2:1dab1089c332 | 340 | |
| wim |
2:1dab1089c332 | 341 | // Init the edge detection boolean |
| wim |
2:1dab1089c332 | 342 | _CDINT_detected = false; |
| wim |
2:1dab1089c332 | 343 | |
| wim |
2:1dab1089c332 | 344 | // Sampling does not begin until you set a frequency. |
| wim |
2:1dab1089c332 | 345 | // The default is 20ms. If you want a different frequency |
| wim |
2:1dab1089c332 | 346 | // then pass the period in microseconds for example, for 10ms :- |
| wim |
2:1dab1089c332 | 347 | // _CDINT.setSampleFrequency(10000); |
| wim |
2:1dab1089c332 | 348 | // |
| wim |
2:1dab1089c332 | 349 | _CDINT.setSampleFrequency(); // Defaults to 20ms. |
| wim |
2:1dab1089c332 | 350 | } |
| wim |
2:1dab1089c332 | 351 | |
| wim |
2:1dab1089c332 | 352 | /** Setup debouncing and edge detection on the FIRE pin |
| wim |
2:1dab1089c332 | 353 | * |
| wim |
2:1dab1089c332 | 354 | * @returns |
| wim |
2:1dab1089c332 | 355 | */ |
| wim |
2:1dab1089c332 | 356 | void MBED_ControlBus::_FIRE_init() { |
| wim |
2:1dab1089c332 | 357 | |
| wim |
2:1dab1089c332 | 358 | // Setup the callback functions |
| wim |
2:1dab1089c332 | 359 | _FIRE.mode(PullDown); |
| wim |
2:1dab1089c332 | 360 | _FIRE.attach_asserted(this, &MBED_ControlBus::_FIRE_activated); |
| wim |
2:1dab1089c332 | 361 | _FIRE.attach_deasserted(this, &MBED_ControlBus::_FIRE_deactivated); |
| wim |
2:1dab1089c332 | 362 | // _FIRE.attach_asserted_held( &keyPressedHeld ); |
| wim |
2:1dab1089c332 | 363 | // _FIRE.attach_deasserted_held( &keyReleasedHeld ); |
| wim |
2:1dab1089c332 | 364 | |
| wim |
2:1dab1089c332 | 365 | // Init the edge detection boolean |
| wim |
2:1dab1089c332 | 366 | _FIRE_detected = false; |
| wim |
2:1dab1089c332 | 367 | |
| wim |
2:1dab1089c332 | 368 | // Sampling does not begin until you set a frequency. |
| wim |
2:1dab1089c332 | 369 | // The default is 20ms. If you want a different frequency |
| wim |
2:1dab1089c332 | 370 | // then pass the period in microseconds for example, for 10ms :- |
| wim |
2:1dab1089c332 | 371 | // _FIRE.setSampleFrequency(10000); |
| wim |
2:1dab1089c332 | 372 | // |
| wim |
2:1dab1089c332 | 373 | _FIRE.setSampleFrequency(); // Defaults to 20ms. |
| wim |
2:1dab1089c332 | 374 | } |
| wim |
2:1dab1089c332 | 375 | #endif // __PINDETECT_IN |
| wim |
2:1dab1089c332 | 376 | |
| wim |
2:1dab1089c332 | 377 | |
| wim |
2:1dab1089c332 | 378 | /** Init MBED_ControlBus |
| wim |
2:1dab1089c332 | 379 | * @param |
| wim |
2:1dab1089c332 | 380 | * @returns |
| wim |
2:1dab1089c332 | 381 | */ |
| wim |
2:1dab1089c332 | 382 | void MBED_ControlBus::_init() { |
| wim |
2:1dab1089c332 | 383 | // Make sure that all Control pins are disabled |
| wim |
2:1dab1089c332 | 384 | _RD = 1; // RD Pin High |
| wim |
2:1dab1089c332 | 385 | _WR = 1; // WR Pin High |
| wim |
2:1dab1089c332 | 386 | |
| wim |
2:1dab1089c332 | 387 | // Make sure that databus buffer is enabled for Write |
| wim |
2:1dab1089c332 | 388 | busctrl(ENABLE, WRITE); |
| wim |
2:1dab1089c332 | 389 | |
| wim |
2:1dab1089c332 | 390 | // Setup debouncing and edge detection for CDINT |
| wim |
2:1dab1089c332 | 391 | _CDINT_init(); |
| wim |
2:1dab1089c332 | 392 | |
| wim |
2:1dab1089c332 | 393 | // Setup debouncing and edge detection for FIRE |
| wim |
2:1dab1089c332 | 394 | _FIRE_init(); |
| wim |
2:1dab1089c332 | 395 | } |
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Repository details
| Type: | Program |
|---|---|
| Mbed OS support: | Mbed 2 deprecated |
| Created: | 31 Aug 2011 |
| Imports: | 48 |
| Forks: | 0 |
| Commits: | 8 |
| Dependents: | 0 |
| Dependencies: | 3 |
| Followers: | 2 |
| Issues: | 0 |
The code in this repository is Apache licensed.
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