Lluis Nadal
Very simple test for SOMO-14D Embedded Audio-Sound Module
main.cpp@0:78e5168d3809, 2010-10-10 (annotated)
- Committer:
- lnadal
- Date:
- Sun Oct 10 07:40:59 2010 +0000
- Revision:
- 0:78e5168d3809
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| lnadal | 0:78e5168d3809 | 1 | #include "mbed.h" |
| lnadal | 0:78e5168d3809 | 2 | |
| lnadal | 0:78e5168d3809 | 3 | /* Simple test for SOMO-14D module. |
| lnadal | 0:78e5168d3809 | 4 | Plays a selected file. See www.4dsystems .com.au for details. |
| lnadal | 0:78e5168d3809 | 5 | |
| lnadal | 0:78e5168d3809 | 6 | Author: Lluis Nadal. |
| lnadal | 0:78e5168d3809 | 7 | Date: October 10th 2010. |
| lnadal | 0:78e5168d3809 | 8 | |
| lnadal | 0:78e5168d3809 | 9 | File names must match file number in decimal: 0000.ad4 ... to 0511.ad4 |
| lnadal | 0:78e5168d3809 | 10 | Commands: |
| lnadal | 0:78e5168d3809 | 11 | File addres (fileNumber): 0x0000 - 0x01FF |
| lnadal | 0:78e5168d3809 | 12 | Play/Pause: 0xFFFE |
| lnadal | 0:78e5168d3809 | 13 | Volume (8 levels): 0xFFF0 - 0xFFF7 |
| lnadal | 0:78e5168d3809 | 14 | Stop: 0xFFFF |
| lnadal | 0:78e5168d3809 | 15 | |
| lnadal | 0:78e5168d3809 | 16 | */ |
| lnadal | 0:78e5168d3809 | 17 | |
| lnadal | 0:78e5168d3809 | 18 | DigitalOut reset(p16); // connected to SOMO p10 |
| lnadal | 0:78e5168d3809 | 19 | DigitalIn busy(p15); // connected to SOMO p5 |
| lnadal | 0:78e5168d3809 | 20 | |
| lnadal | 0:78e5168d3809 | 21 | // SOMO p9 connected to ground |
| lnadal | 0:78e5168d3809 | 22 | // SOMO p8 connected to Vcc = +3.3V |
| lnadal | 0:78e5168d3809 | 23 | // SOMO p11, p12 connected to speaker |
| lnadal | 0:78e5168d3809 | 24 | DigitalOut data(p5); // connected to SOMO p4 |
| lnadal | 0:78e5168d3809 | 25 | DigitalOut clk(p7); // connected to SOMO p3 |
| lnadal | 0:78e5168d3809 | 26 | unsigned short fileNumber; |
| lnadal | 0:78e5168d3809 | 27 | unsigned short command; |
| lnadal | 0:78e5168d3809 | 28 | |
| lnadal | 0:78e5168d3809 | 29 | |
| lnadal | 0:78e5168d3809 | 30 | void init() { |
| lnadal | 0:78e5168d3809 | 31 | |
| lnadal | 0:78e5168d3809 | 32 | clk = 1; |
| lnadal | 0:78e5168d3809 | 33 | reset = 1; |
| lnadal | 0:78e5168d3809 | 34 | reset = 0; |
| lnadal | 0:78e5168d3809 | 35 | wait(0.005); |
| lnadal | 0:78e5168d3809 | 36 | reset = 1; |
| lnadal | 0:78e5168d3809 | 37 | wait(0.3); |
| lnadal | 0:78e5168d3809 | 38 | } |
| lnadal | 0:78e5168d3809 | 39 | |
| lnadal | 0:78e5168d3809 | 40 | |
| lnadal | 0:78e5168d3809 | 41 | |
| lnadal | 0:78e5168d3809 | 42 | void writeData(unsigned short value) { |
| lnadal | 0:78e5168d3809 | 43 | |
| lnadal | 0:78e5168d3809 | 44 | clk = 0; |
| lnadal | 0:78e5168d3809 | 45 | wait(0.002); |
| lnadal | 0:78e5168d3809 | 46 | for (int i = 0; i<16; i++) { |
| lnadal | 0:78e5168d3809 | 47 | wait(0.000100f); |
| lnadal | 0:78e5168d3809 | 48 | data = value & 0x8000; // selects most significant bit |
| lnadal | 0:78e5168d3809 | 49 | wait(0.000001f); |
| lnadal | 0:78e5168d3809 | 50 | clk = 1; |
| lnadal | 0:78e5168d3809 | 51 | wait(0.000050f); |
| lnadal | 0:78e5168d3809 | 52 | clk=0; |
| lnadal | 0:78e5168d3809 | 53 | value = value <<1; // shifts one bit left |
| lnadal | 0:78e5168d3809 | 54 | } |
| lnadal | 0:78e5168d3809 | 55 | clk =1; |
| lnadal | 0:78e5168d3809 | 56 | wait(0.002); |
| lnadal | 0:78e5168d3809 | 57 | } |
| lnadal | 0:78e5168d3809 | 58 | |
| lnadal | 0:78e5168d3809 | 59 | |
| lnadal | 0:78e5168d3809 | 60 | int main() { |
| lnadal | 0:78e5168d3809 | 61 | wait(0.5); |
| lnadal | 0:78e5168d3809 | 62 | while (busy == 1); // checks if SOMO is busy |
| lnadal | 0:78e5168d3809 | 63 | |
| lnadal | 0:78e5168d3809 | 64 | fileNumber = 0x0001; //selects 2nd file |
| lnadal | 0:78e5168d3809 | 65 | command = 0xFFFE; // play file command |
| lnadal | 0:78e5168d3809 | 66 | |
| lnadal | 0:78e5168d3809 | 67 | init(); |
| lnadal | 0:78e5168d3809 | 68 | |
| lnadal | 0:78e5168d3809 | 69 | writeData(fileNumber); |
| lnadal | 0:78e5168d3809 | 70 | writeData(command); |
| lnadal | 0:78e5168d3809 | 71 | |
| lnadal | 0:78e5168d3809 | 72 | } |