Josh Davy
/
Flip
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Music/Music.cpp@11:db27d3838514, 2019-05-06 (annotated)
- Committer:
- joshdavy
- Date:
- Mon May 06 14:43:01 2019 +0000
- Revision:
- 11:db27d3838514
- Parent:
- 8:21b6d4dbce44
- Child:
- 14:1e6f74233e8e
test
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| joshdavy | 5:b9cf407bcc63 | 1 | |
| joshdavy | 5:b9cf407bcc63 | 2 | #include "Music.h" |
| joshdavy | 5:b9cf407bcc63 | 3 | PwmOut speaker(PTC10); |
| joshdavy | 5:b9cf407bcc63 | 4 | |
| joshdavy | 4:afbf3dd71403 | 5 | Music::Music() |
| joshdavy | 4:afbf3dd71403 | 6 | { |
| joshdavy | 4:afbf3dd71403 | 7 | |
| joshdavy | 4:afbf3dd71403 | 8 | } |
| joshdavy | 4:afbf3dd71403 | 9 | Music::~Music() |
| joshdavy | 4:afbf3dd71403 | 10 | { |
| joshdavy | 4:afbf3dd71403 | 11 | |
| joshdavy | 4:afbf3dd71403 | 12 | |
| joshdavy | 4:afbf3dd71403 | 13 | |
| joshdavy | 4:afbf3dd71403 | 14 | } |
| joshdavy | 11:db27d3838514 | 15 | |
| joshdavy | 11:db27d3838514 | 16 | |
| joshdavy | 5:b9cf407bcc63 | 17 | void Music::init(const int* data,int length) |
| joshdavy | 4:afbf3dd71403 | 18 | { |
| joshdavy | 5:b9cf407bcc63 | 19 | |
| joshdavy | 4:afbf3dd71403 | 20 | _data = data; |
| joshdavy | 5:b9cf407bcc63 | 21 | _length = length; |
| joshdavy | 6:2ca1516ec1e2 | 22 | speaker.period(0.00003); // Has to << then 1/sample rate |
| joshdavy | 4:afbf3dd71403 | 23 | speaker.write(0); // until music played stay silent |
| joshdavy | 5:b9cf407bcc63 | 24 | _index = 0; |
| joshdavy | 4:afbf3dd71403 | 25 | } |
| joshdavy | 4:afbf3dd71403 | 26 | |
| joshdavy | 5:b9cf407bcc63 | 27 | void Music::play_next() |
| joshdavy | 4:afbf3dd71403 | 28 | { |
| joshdavy | 5:b9cf407bcc63 | 29 | double duty_cycle; |
| joshdavy | 5:b9cf407bcc63 | 30 | duty_cycle = ((128-_data[_index]*1.7)+128)/256.0; |
| joshdavy | 5:b9cf407bcc63 | 31 | //printf("%i = %f\n",_index,duty_cycle); |
| joshdavy | 5:b9cf407bcc63 | 32 | |
| joshdavy | 5:b9cf407bcc63 | 33 | if (_index < _length) { |
| joshdavy | 5:b9cf407bcc63 | 34 | speaker.write(duty_cycle); |
| joshdavy | 4:afbf3dd71403 | 35 | |
| joshdavy | 5:b9cf407bcc63 | 36 | _index++; |
| joshdavy | 5:b9cf407bcc63 | 37 | } else { |
| joshdavy | 6:2ca1516ec1e2 | 38 | _index = 0; |
| joshdavy | 5:b9cf407bcc63 | 39 | } |
| joshdavy | 4:afbf3dd71403 | 40 | |
| joshdavy | 8:21b6d4dbce44 | 41 | } |
| joshdavy | 8:21b6d4dbce44 | 42 | |
| joshdavy | 8:21b6d4dbce44 | 43 |