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Resit Target Localisation Ciaran Kane 18689005
Dependencies: mbed
Piezo_Buzzer/piezo_bz.cpp@7:acf82069b794, 23 months ago (annotated)
- Committer:
- ciarankane123
- Date:
- Thu Aug 25 13:50:39 2022 +0000
- Revision:
- 7:acf82069b794
Final Code;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ciarankane123 | 7:acf82069b794 | 1 | /* |
ciarankane123 | 7:acf82069b794 | 2 | * Mbed library program |
ciarankane123 | 7:acf82069b794 | 3 | * Control Piezo Transducer |
ciarankane123 | 7:acf82069b794 | 4 | * |
ciarankane123 | 7:acf82069b794 | 5 | * Copyright (c) 2018 Kenji Arai / JH1PJL |
ciarankane123 | 7:acf82069b794 | 6 | * http://www.page.sannet.ne.jp/kenjia/index.html |
ciarankane123 | 7:acf82069b794 | 7 | * http://mbed.org/users/kenjiArai/ |
ciarankane123 | 7:acf82069b794 | 8 | * Created: Feburary 28th, 2018 |
ciarankane123 | 7:acf82069b794 | 9 | * Revised: March 3rd, 2018 |
ciarankane123 | 7:acf82069b794 | 10 | */ |
ciarankane123 | 7:acf82069b794 | 11 | |
ciarankane123 | 7:acf82069b794 | 12 | #include "mbed.h" |
ciarankane123 | 7:acf82069b794 | 13 | #include "piezo_bz.h" |
ciarankane123 | 7:acf82069b794 | 14 | |
ciarankane123 | 7:acf82069b794 | 15 | PIEZO_BZ::PIEZO_BZ(PinName pin, uint32_t f, uint32_t on_off_time) |
ciarankane123 | 7:acf82069b794 | 16 | : _pin(pin) |
ciarankane123 | 7:acf82069b794 | 17 | { |
ciarankane123 | 7:acf82069b794 | 18 | out = false; |
ciarankane123 | 7:acf82069b794 | 19 | _pin.write(0); |
ciarankane123 | 7:acf82069b794 | 20 | freq = f; |
ciarankane123 | 7:acf82069b794 | 21 | if (freq < 50) { |
ciarankane123 | 7:acf82069b794 | 22 | freq = 50; |
ciarankane123 | 7:acf82069b794 | 23 | } else if (freq > 10000) { |
ciarankane123 | 7:acf82069b794 | 24 | freq = 10000; |
ciarankane123 | 7:acf82069b794 | 25 | } |
ciarankane123 | 7:acf82069b794 | 26 | flag_run = false; |
ciarankane123 | 7:acf82069b794 | 27 | _t0.attach_us(callback(this, &PIEZO_BZ::create_freq_irq), 500000 / freq); |
ciarankane123 | 7:acf82069b794 | 28 | t_onoff = on_off_time; |
ciarankane123 | 7:acf82069b794 | 29 | if (t_onoff == 0) { |
ciarankane123 | 7:acf82069b794 | 30 | flag_continuous = true; |
ciarankane123 | 7:acf82069b794 | 31 | _t1.attach_us( |
ciarankane123 | 7:acf82069b794 | 32 | callback(this, &PIEZO_BZ::create_onoff_irq), |
ciarankane123 | 7:acf82069b794 | 33 | 1000000000 // 1000sec |
ciarankane123 | 7:acf82069b794 | 34 | ); |
ciarankane123 | 7:acf82069b794 | 35 | } else { |
ciarankane123 | 7:acf82069b794 | 36 | flag_continuous = false; |
ciarankane123 | 7:acf82069b794 | 37 | _t1.attach_us( |
ciarankane123 | 7:acf82069b794 | 38 | callback(this, &PIEZO_BZ::create_onoff_irq), |
ciarankane123 | 7:acf82069b794 | 39 | t_onoff * 1000 |
ciarankane123 | 7:acf82069b794 | 40 | ); |
ciarankane123 | 7:acf82069b794 | 41 | } |
ciarankane123 | 7:acf82069b794 | 42 | } |
ciarankane123 | 7:acf82069b794 | 43 | |
ciarankane123 | 7:acf82069b794 | 44 | PIEZO_BZ::~PIEZO_BZ() |
ciarankane123 | 7:acf82069b794 | 45 | { |
ciarankane123 | 7:acf82069b794 | 46 | _t0.detach(); |
ciarankane123 | 7:acf82069b794 | 47 | _t1.detach(); |
ciarankane123 | 7:acf82069b794 | 48 | } |
ciarankane123 | 7:acf82069b794 | 49 | |
ciarankane123 | 7:acf82069b794 | 50 | void PIEZO_BZ::start() |
ciarankane123 | 7:acf82069b794 | 51 | { |
ciarankane123 | 7:acf82069b794 | 52 | flag_run = true; |
ciarankane123 | 7:acf82069b794 | 53 | } |
ciarankane123 | 7:acf82069b794 | 54 | |
ciarankane123 | 7:acf82069b794 | 55 | void PIEZO_BZ::stop() |
ciarankane123 | 7:acf82069b794 | 56 | { |
ciarankane123 | 7:acf82069b794 | 57 | flag_run = false; |
ciarankane123 | 7:acf82069b794 | 58 | } |
ciarankane123 | 7:acf82069b794 | 59 | |
ciarankane123 | 7:acf82069b794 | 60 | void PIEZO_BZ::change_frequency(uint32_t f) |
ciarankane123 | 7:acf82069b794 | 61 | { |
ciarankane123 | 7:acf82069b794 | 62 | _t0.detach(); |
ciarankane123 | 7:acf82069b794 | 63 | freq = f; |
ciarankane123 | 7:acf82069b794 | 64 | if (freq < 300) { |
ciarankane123 | 7:acf82069b794 | 65 | freq = 300; |
ciarankane123 | 7:acf82069b794 | 66 | } else if (freq > 10000) { |
ciarankane123 | 7:acf82069b794 | 67 | freq = 10000; |
ciarankane123 | 7:acf82069b794 | 68 | } |
ciarankane123 | 7:acf82069b794 | 69 | _t0.attach_us(callback(this, &PIEZO_BZ::create_freq_irq), 500000 / freq); |
ciarankane123 | 7:acf82069b794 | 70 | } |
ciarankane123 | 7:acf82069b794 | 71 | |
ciarankane123 | 7:acf82069b794 | 72 | void PIEZO_BZ::change_on_off(uint32_t on_off_time) |
ciarankane123 | 7:acf82069b794 | 73 | { |
ciarankane123 | 7:acf82069b794 | 74 | _t1.detach(); |
ciarankane123 | 7:acf82069b794 | 75 | t_onoff = on_off_time; |
ciarankane123 | 7:acf82069b794 | 76 | if (t_onoff == 0) { |
ciarankane123 | 7:acf82069b794 | 77 | flag_continuous = true; |
ciarankane123 | 7:acf82069b794 | 78 | _t1.attach_us( |
ciarankane123 | 7:acf82069b794 | 79 | callback(this, &PIEZO_BZ::create_onoff_irq), |
ciarankane123 | 7:acf82069b794 | 80 | 1000000000U // 1000sec |
ciarankane123 | 7:acf82069b794 | 81 | ); |
ciarankane123 | 7:acf82069b794 | 82 | } else { |
ciarankane123 | 7:acf82069b794 | 83 | flag_continuous = false; |
ciarankane123 | 7:acf82069b794 | 84 | _t1.attach_us( |
ciarankane123 | 7:acf82069b794 | 85 | callback(this, &PIEZO_BZ::create_onoff_irq), |
ciarankane123 | 7:acf82069b794 | 86 | t_onoff * 1000U |
ciarankane123 | 7:acf82069b794 | 87 | ); |
ciarankane123 | 7:acf82069b794 | 88 | } |
ciarankane123 | 7:acf82069b794 | 89 | } |
ciarankane123 | 7:acf82069b794 | 90 | |
ciarankane123 | 7:acf82069b794 | 91 | void PIEZO_BZ::create_freq_irq(void) |
ciarankane123 | 7:acf82069b794 | 92 | { |
ciarankane123 | 7:acf82069b794 | 93 | // <point A> |
ciarankane123 | 7:acf82069b794 | 94 | if (!flag_run) { |
ciarankane123 | 7:acf82069b794 | 95 | _pin.write(0); |
ciarankane123 | 7:acf82069b794 | 96 | return; |
ciarankane123 | 7:acf82069b794 | 97 | } |
ciarankane123 | 7:acf82069b794 | 98 | if (!flag_continuous) { |
ciarankane123 | 7:acf82069b794 | 99 | if (!flag_onoff) { |
ciarankane123 | 7:acf82069b794 | 100 | _pin.write(0); |
ciarankane123 | 7:acf82069b794 | 101 | return; |
ciarankane123 | 7:acf82069b794 | 102 | } |
ciarankane123 | 7:acf82069b794 | 103 | } |
ciarankane123 | 7:acf82069b794 | 104 | _pin.write(out); |
ciarankane123 | 7:acf82069b794 | 105 | out = !out; |
ciarankane123 | 7:acf82069b794 | 106 | // <point B> |
ciarankane123 | 7:acf82069b794 | 107 | // Processing time from <point A> to <point B> is 200 to 230ns |
ciarankane123 | 7:acf82069b794 | 108 | // measured on Nucleo-F446RE board (System clock 180MHz) |
ciarankane123 | 7:acf82069b794 | 109 | } |
ciarankane123 | 7:acf82069b794 | 110 | |
ciarankane123 | 7:acf82069b794 | 111 | void PIEZO_BZ::create_onoff_irq(void) |
ciarankane123 | 7:acf82069b794 | 112 | { |
ciarankane123 | 7:acf82069b794 | 113 | // <point C> |
ciarankane123 | 7:acf82069b794 | 114 | if (flag_continuous) { |
ciarankane123 | 7:acf82069b794 | 115 | flag_onoff = true; |
ciarankane123 | 7:acf82069b794 | 116 | } else { |
ciarankane123 | 7:acf82069b794 | 117 | flag_onoff = !flag_onoff; |
ciarankane123 | 7:acf82069b794 | 118 | } |
ciarankane123 | 7:acf82069b794 | 119 | // <point D> |
ciarankane123 | 7:acf82069b794 | 120 | // Processing time from <point C> to <point D> is 120 to 140ns |
ciarankane123 | 7:acf82069b794 | 121 | // measured on Nucleo-F446RE board (System clock 180MHz) |
ciarankane123 | 7:acf82069b794 | 122 | } |