Thomas Cauwelier / Mbed 2 deprecated visible_light_communication

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Dependencies:   SoftSerial SDFileSystem mbed wave_player

Client.cpp@26:1c8a7d0bb4b7, 2017-05-17 (annotated)

Committer:
Thomas Cauwelier
Date:
Wed May 17 01:47:04 2017 +0200
Revision:
26:1c8a7d0bb4b7
Child:
27:6dbcad451cbc
add client logic

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Thomas Cauwelier 26:1c8a7d0bb4b7 1 //
Thomas Cauwelier 26:1c8a7d0bb4b7 2 // Created by thoma on 17-May-17.
Thomas Cauwelier 26:1c8a7d0bb4b7 3 //
Thomas Cauwelier 26:1c8a7d0bb4b7 4
Thomas Cauwelier 26:1c8a7d0bb4b7 5 #include "Client.h"
Thomas Cauwelier 26:1c8a7d0bb4b7 6
Thomas Cauwelier 26:1c8a7d0bb4b7 7 Client::Client(PinName rx_luart, int baudrate_luart) :
Thomas Cauwelier 26:1c8a7d0bb4b7 8 aout(p18), fileSystem(p5, p6, p7, p8, "sd"), player(&aout), softSerial(NC, rx_luart),
Thomas Cauwelier 26:1c8a7d0bb4b7 9 spi_amp(p11, p12, p13, p14) {
Thomas Cauwelier 26:1c8a7d0bb4b7 10 softSerial.baud(baudrate_luart);
Thomas Cauwelier 26:1c8a7d0bb4b7 11 spi_amp.format(8, 0);
Thomas Cauwelier 26:1c8a7d0bb4b7 12 spi_amp.frequency(1000000);
Thomas Cauwelier 26:1c8a7d0bb4b7 13 fileSystem.disk_initialize();
Thomas Cauwelier 26:1c8a7d0bb4b7 14 wave_file = fopen("/sd/receive.wav", "w+");
Thomas Cauwelier 26:1c8a7d0bb4b7 15 if (wave_file == NULL) {
Thomas Cauwelier 26:1c8a7d0bb4b7 16 error("Could not open file for w+\n");
Thomas Cauwelier 26:1c8a7d0bb4b7 17 }
Thomas Cauwelier 26:1c8a7d0bb4b7 18 }
Thomas Cauwelier 26:1c8a7d0bb4b7 19
Thomas Cauwelier 26:1c8a7d0bb4b7 20 void Client::play_file() {
Thomas Cauwelier 26:1c8a7d0bb4b7 21 fflush(wave_file);
Thomas Cauwelier 26:1c8a7d0bb4b7 22 rewind(wave_file);
Thomas Cauwelier 26:1c8a7d0bb4b7 23 printf("playing_file\r\n");
Thomas Cauwelier 26:1c8a7d0bb4b7 24 player.play(wave_file);
Thomas Cauwelier 26:1c8a7d0bb4b7 25 printf("done\r\n");
Thomas Cauwelier 26:1c8a7d0bb4b7 26 rewind(wave_file);
Thomas Cauwelier 26:1c8a7d0bb4b7 27 }
Thomas Cauwelier 26:1c8a7d0bb4b7 28
Thomas Cauwelier 26:1c8a7d0bb4b7 29 void Client::set_volume() {
Thomas Cauwelier 26:1c8a7d0bb4b7 30 while (!softSerial.readable());
Thomas Cauwelier 26:1c8a7d0bb4b7 31 int value = softSerial.getc();
Thomas Cauwelier 26:1c8a7d0bb4b7 32
Thomas Cauwelier 26:1c8a7d0bb4b7 33 spi_amp.write(0);
Thomas Cauwelier 26:1c8a7d0bb4b7 34 spi_amp.write(int((value / 100.0) * 255.0));
Thomas Cauwelier 26:1c8a7d0bb4b7 35 printf("volume set to %i\r\n", value);
Thomas Cauwelier 26:1c8a7d0bb4b7 36 }
Thomas Cauwelier 26:1c8a7d0bb4b7 37
Thomas Cauwelier 26:1c8a7d0bb4b7 38 void Client::run() {
Thomas Cauwelier 26:1c8a7d0bb4b7 39 while (true) {
Thomas Cauwelier 26:1c8a7d0bb4b7 40 handle_type();
Thomas Cauwelier 26:1c8a7d0bb4b7 41 }
Thomas Cauwelier 26:1c8a7d0bb4b7 42 }
Thomas Cauwelier 26:1c8a7d0bb4b7 43
Thomas Cauwelier 26:1c8a7d0bb4b7 44 void Client::handle_type() {
Thomas Cauwelier 26:1c8a7d0bb4b7 45 while (!softSerial.readable());
Thomas Cauwelier 26:1c8a7d0bb4b7 46 int packet_type = softSerial.getc();
Thomas Cauwelier 26:1c8a7d0bb4b7 47
Thomas Cauwelier 26:1c8a7d0bb4b7 48 switch (packet_type) {
Thomas Cauwelier 26:1c8a7d0bb4b7 49 case SET_VOLUME:
Thomas Cauwelier 26:1c8a7d0bb4b7 50 set_volume();
Thomas Cauwelier 26:1c8a7d0bb4b7 51 break;
Thomas Cauwelier 26:1c8a7d0bb4b7 52 case SEND_FILE:
Thomas Cauwelier 26:1c8a7d0bb4b7 53 send_file();
Thomas Cauwelier 26:1c8a7d0bb4b7 54 break;
Thomas Cauwelier 26:1c8a7d0bb4b7 55 default:
Thomas Cauwelier 26:1c8a7d0bb4b7 56 break;
Thomas Cauwelier 26:1c8a7d0bb4b7 57 }
Thomas Cauwelier 26:1c8a7d0bb4b7 58 }
Thomas Cauwelier 26:1c8a7d0bb4b7 59
Thomas Cauwelier 26:1c8a7d0bb4b7 60 void Client::send_file() {
Thomas Cauwelier 26:1c8a7d0bb4b7 61 // get file size
Thomas Cauwelier 26:1c8a7d0bb4b7 62 int size = 0;
Thomas Cauwelier 26:1c8a7d0bb4b7 63 for (int i = 0; i < 4; ++i) {
Thomas Cauwelier 26:1c8a7d0bb4b7 64 while (!softSerial.readable());
Thomas Cauwelier 26:1c8a7d0bb4b7 65 int b = softSerial.getc();
Thomas Cauwelier 26:1c8a7d0bb4b7 66 while (!softSerial.writeable());
Thomas Cauwelier 26:1c8a7d0bb4b7 67 softSerial.putc(b);
Thomas Cauwelier 26:1c8a7d0bb4b7 68 size |= b << ((3 - i) << 3);
Thomas Cauwelier 26:1c8a7d0bb4b7 69 }
Thomas Cauwelier 26:1c8a7d0bb4b7 70
Thomas Cauwelier 26:1c8a7d0bb4b7 71
Thomas Cauwelier 26:1c8a7d0bb4b7 72 // send data
Thomas Cauwelier 26:1c8a7d0bb4b7 73 int j = 0;
Thomas Cauwelier 26:1c8a7d0bb4b7 74 while (j < size) {
Thomas Cauwelier 26:1c8a7d0bb4b7 75
Thomas Cauwelier 26:1c8a7d0bb4b7 76 // get max 64 bytes
Thomas Cauwelier 26:1c8a7d0bb4b7 77 int k = 0;
Thomas Cauwelier 26:1c8a7d0bb4b7 78 for (k; k < 64; ++k) {
Thomas Cauwelier 26:1c8a7d0bb4b7 79 if (j == size) {
Thomas Cauwelier 26:1c8a7d0bb4b7 80 break;
Thomas Cauwelier 26:1c8a7d0bb4b7 81 }
Thomas Cauwelier 26:1c8a7d0bb4b7 82 while (!softSerial.readable());
Thomas Cauwelier 26:1c8a7d0bb4b7 83 int b = softSerial.getc();
Thomas Cauwelier 26:1c8a7d0bb4b7 84 buffer[k] = (char) b;
Thomas Cauwelier 26:1c8a7d0bb4b7 85 j++;
Thomas Cauwelier 26:1c8a7d0bb4b7 86 }
Thomas Cauwelier 26:1c8a7d0bb4b7 87
Thomas Cauwelier 26:1c8a7d0bb4b7 88 // store max 64 bytes
Thomas Cauwelier 26:1c8a7d0bb4b7 89 fwrite(buffer, sizeof(char), (size_t) k, wave_file);
Thomas Cauwelier 26:1c8a7d0bb4b7 90 }
Thomas Cauwelier 26:1c8a7d0bb4b7 91
Thomas Cauwelier 26:1c8a7d0bb4b7 92 play_file();
Thomas Cauwelier 26:1c8a7d0bb4b7 93 }