Dependencies: keypad SDHCFileSystem TextLCD mbed FPointer wave_player
main.cpp@0:57ece500234e, 2012-02-20 (annotated)
- Committer:
- daryl2110
- Date:
- Mon Feb 20 07:32:56 2012 +0000
- Revision:
- 0:57ece500234e
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
daryl2110 | 0:57ece500234e | 1 | /* |
daryl2110 | 0:57ece500234e | 2 | Final Year Project for Ngee Ann Polytechnic Electrical Engineering Year 3 |
daryl2110 | 0:57ece500234e | 3 | Project Title: Bus Assistance for the Visually Impaired |
daryl2110 | 0:57ece500234e | 4 | */ |
daryl2110 | 0:57ece500234e | 5 | #include "mbed.h" |
daryl2110 | 0:57ece500234e | 6 | #include "scmRTOS.h" |
daryl2110 | 0:57ece500234e | 7 | #include "wave_player.h" |
daryl2110 | 0:57ece500234e | 8 | #include "SDHCFileSystem.h" |
daryl2110 | 0:57ece500234e | 9 | #include "keypad.h" |
daryl2110 | 0:57ece500234e | 10 | #include "TextLCD.h" |
daryl2110 | 0:57ece500234e | 11 | |
daryl2110 | 0:57ece500234e | 12 | Serial xbee(p9, p10); |
daryl2110 | 0:57ece500234e | 13 | DigitalOut rst1(p11); |
daryl2110 | 0:57ece500234e | 14 | SDFileSystem sd(p5, p6, p7, p8, "sd"); |
daryl2110 | 0:57ece500234e | 15 | AnalogOut AudioOut(p18); |
daryl2110 | 0:57ece500234e | 16 | wave_player waver(&AudioOut); |
daryl2110 | 0:57ece500234e | 17 | //Keypad keypad( p24, p23, p22, p21, p28, p27, p26, p25); |
daryl2110 | 0:57ece500234e | 18 | TextLCD lcd(p15, p16, p17, p18, p19, p20); |
daryl2110 | 0:57ece500234e | 19 | DigitalOut myled(LED1);//Create variable for Led 1 on the mbed |
daryl2110 | 0:57ece500234e | 20 | DigitalOut myled1(LED2);//Create variable for Led 2 on the mbed |
daryl2110 | 0:57ece500234e | 21 | //BusOut seven(p27, p26, p25, p24, p23, p22, p21); |
daryl2110 | 0:57ece500234e | 22 | //BusOut leds(p28, p29, p30); |
daryl2110 | 0:57ece500234e | 23 | |
daryl2110 | 0:57ece500234e | 24 | DigitalOut led(LED1); |
daryl2110 | 0:57ece500234e | 25 | DigitalOut led1(LED2); |
daryl2110 | 0:57ece500234e | 26 | |
daryl2110 | 0:57ece500234e | 27 | //OS Timer/interrupt |
daryl2110 | 0:57ece500234e | 28 | OS::TEventFlag XBee; |
daryl2110 | 0:57ece500234e | 29 | |
daryl2110 | 0:57ece500234e | 30 | // process types |
daryl2110 | 0:57ece500234e | 31 | //typedef OS::process<OS::pr1, 5000> TProc1; //7 Segment LED |
daryl2110 | 0:57ece500234e | 32 | typedef OS::process<OS::pr0, 4000> TProc2; // XBee Communication |
daryl2110 | 0:57ece500234e | 33 | //typedef OS::process<OS::pr0, 8000> TProc3; // Playing of Audio |
daryl2110 | 0:57ece500234e | 34 | //typedef OS::process<OS::pr0 1000> TProc4; // Interrupt of Keypad |
daryl2110 | 0:57ece500234e | 35 | |
daryl2110 | 0:57ece500234e | 36 | // process objects |
daryl2110 | 0:57ece500234e | 37 | //TProc1 Proc1; |
daryl2110 | 0:57ece500234e | 38 | TProc2 Proc2; |
daryl2110 | 0:57ece500234e | 39 | //TProc3 Proc3; |
daryl2110 | 0:57ece500234e | 40 | //TProc4 Proc4 |
daryl2110 | 0:57ece500234e | 41 | |
daryl2110 | 0:57ece500234e | 42 | #define MAXBUS 10 |
daryl2110 | 0:57ece500234e | 43 | #define MAXLEN 4 |
daryl2110 | 0:57ece500234e | 44 | #define ENDKEY 14 |
daryl2110 | 0:57ece500234e | 45 | int req; |
daryl2110 | 0:57ece500234e | 46 | char Bus[MAXBUS][MAXLEN]; |
daryl2110 | 0:57ece500234e | 47 | char NumIx = 0; // Point to current index of Bus number |
daryl2110 | 0:57ece500234e | 48 | char BusIx = 0; // Point to current bus |
daryl2110 | 0:57ece500234e | 49 | bool BusFull = false; // Bus number buffer is full |
daryl2110 | 0:57ece500234e | 50 | char KeyCh; |
daryl2110 | 0:57ece500234e | 51 | |
daryl2110 | 0:57ece500234e | 52 | |
daryl2110 | 0:57ece500234e | 53 | char Keytable[] = { '1', '2', '3', 'A', |
daryl2110 | 0:57ece500234e | 54 | '4', '5', '6', 'B', |
daryl2110 | 0:57ece500234e | 55 | '7', '8', '9', 'C', |
daryl2110 | 0:57ece500234e | 56 | '*', '0', '#', 'D' |
daryl2110 | 0:57ece500234e | 57 | }; |
daryl2110 | 0:57ece500234e | 58 | |
daryl2110 | 0:57ece500234e | 59 | uint32_t cbAfterInput(uint32_t key) { |
daryl2110 | 0:57ece500234e | 60 | KeyCh = Keytable[key]; |
daryl2110 | 0:57ece500234e | 61 | |
daryl2110 | 0:57ece500234e | 62 | if (BusFull) { |
daryl2110 | 0:57ece500234e | 63 | printf("Bus number is already full\n"); |
daryl2110 | 0:57ece500234e | 64 | return 2; |
daryl2110 | 0:57ece500234e | 65 | } |
daryl2110 | 0:57ece500234e | 66 | |
daryl2110 | 0:57ece500234e | 67 | |
daryl2110 | 0:57ece500234e | 68 | if (NumIx < MAXLEN - 1) { |
daryl2110 | 0:57ece500234e | 69 | if (key != ENDKEY) { // Terminating key |
daryl2110 | 0:57ece500234e | 70 | lcd.putc(KeyCh); |
daryl2110 | 0:57ece500234e | 71 | printf("%c", KeyCh); |
daryl2110 | 0:57ece500234e | 72 | |
daryl2110 | 0:57ece500234e | 73 | |
daryl2110 | 0:57ece500234e | 74 | } else { // Terminating key is entered |
daryl2110 | 0:57ece500234e | 75 | printf("\nBus(%d,%d)=%c\n", BusIx, NumIx, KeyCh); |
daryl2110 | 0:57ece500234e | 76 | BusIx++; |
daryl2110 | 0:57ece500234e | 77 | NumIx = 0; |
daryl2110 | 0:57ece500234e | 78 | } |
daryl2110 | 0:57ece500234e | 79 | } |
daryl2110 | 0:57ece500234e | 80 | return 0; |
daryl2110 | 0:57ece500234e | 81 | } |
daryl2110 | 0:57ece500234e | 82 | |
daryl2110 | 0:57ece500234e | 83 | //--------------------------------------------------------------------------- |
daryl2110 | 0:57ece500234e | 84 | long long count = 0; |
daryl2110 | 0:57ece500234e | 85 | |
daryl2110 | 0:57ece500234e | 86 | int main() { |
daryl2110 | 0:57ece500234e | 87 | printf("\nInitialising ...\n"); |
daryl2110 | 0:57ece500234e | 88 | rst1 = 0; //Set reset pin to 0 |
daryl2110 | 0:57ece500234e | 89 | myled = 0;//Set LED1 to 0 |
daryl2110 | 0:57ece500234e | 90 | myled1 = 0;//Set LED2 to 0 |
daryl2110 | 0:57ece500234e | 91 | wait_ms(1);//Wait at least one millisecond |
daryl2110 | 0:57ece500234e | 92 | rst1 = 1;//Set reset pin to 1 |
daryl2110 | 0:57ece500234e | 93 | wait_ms(1);//Wait another millisecond |
daryl2110 | 0:57ece500234e | 94 | OS::Run(); |
daryl2110 | 0:57ece500234e | 95 | memset(&Bus, 0, MAXBUS * MAXLEN); |
daryl2110 | 0:57ece500234e | 96 | //seven = Bus[BusIx][NumIx]; |
daryl2110 | 0:57ece500234e | 97 | |
daryl2110 | 0:57ece500234e | 98 | } |
daryl2110 | 0:57ece500234e | 99 | |
daryl2110 | 0:57ece500234e | 100 | //--------------------------------------------------------------------------- |
daryl2110 | 0:57ece500234e | 101 | template<> OS_PROCESS void TProc1::Exec() { |
daryl2110 | 0:57ece500234e | 102 | int i; |
daryl2110 | 0:57ece500234e | 103 | int n = 1; |
daryl2110 | 0:57ece500234e | 104 | for (;;) { // toggling between 7 seg led |
daryl2110 | 0:57ece500234e | 105 | for (int i=0; i<3; i++) { |
daryl2110 | 0:57ece500234e | 106 | leds = 0x01 << n; |
daryl2110 | 0:57ece500234e | 107 | n = (++n) % 3; |
daryl2110 | 0:57ece500234e | 108 | seven = Bus[BusIx][NumIx]; |
daryl2110 | 0:57ece500234e | 109 | |
daryl2110 | 0:57ece500234e | 110 | } |
daryl2110 | 0:57ece500234e | 111 | } |
daryl2110 | 0:57ece500234e | 112 | } |
daryl2110 | 0:57ece500234e | 113 | |
daryl2110 | 0:57ece500234e | 114 | //--------------------------------------------------------------------------- |
daryl2110 | 0:57ece500234e | 115 | template<> OS_PROCESS void TProc2::Exec() { |
daryl2110 | 0:57ece500234e | 116 | |
daryl2110 | 0:57ece500234e | 117 | for (;;) { |
daryl2110 | 0:57ece500234e | 118 | if (xbee.readable()) { |
daryl2110 | 0:57ece500234e | 119 | req = xbee.getc(); |
daryl2110 | 0:57ece500234e | 120 | printf("req = %c\n", req); |
daryl2110 | 0:57ece500234e | 121 | //XBee.SignalISR(); |
daryl2110 | 0:57ece500234e | 122 | Sleep(2000); |
daryl2110 | 0:57ece500234e | 123 | } |
daryl2110 | 0:57ece500234e | 124 | } |
daryl2110 | 0:57ece500234e | 125 | } |
daryl2110 | 0:57ece500234e | 126 | |
daryl2110 | 0:57ece500234e | 127 | |
daryl2110 | 0:57ece500234e | 128 | //--------------------------------------------------------------------------- |
daryl2110 | 0:57ece500234e | 129 | template<> OS_PROCESS void TProc3::Exec() { |
daryl2110 | 0:57ece500234e | 130 | |
daryl2110 | 0:57ece500234e | 131 | for (;;) { |
daryl2110 | 0:57ece500234e | 132 | |
daryl2110 | 0:57ece500234e | 133 | if (req == 'r') { |
daryl2110 | 0:57ece500234e | 134 | printf("Came here 2 \n"); |
daryl2110 | 0:57ece500234e | 135 | FILE *fp = fopen("/sd/wf/Bus.wav","r"); |
daryl2110 | 0:57ece500234e | 136 | waver.play(fp); |
daryl2110 | 0:57ece500234e | 137 | printf("playing"); |
daryl2110 | 0:57ece500234e | 138 | fseek(fp, 0, SEEK_SET); |
daryl2110 | 0:57ece500234e | 139 | fclose(fp); |
daryl2110 | 0:57ece500234e | 140 | |
daryl2110 | 0:57ece500234e | 141 | } |
daryl2110 | 0:57ece500234e | 142 | } |
daryl2110 | 0:57ece500234e | 143 | |
daryl2110 | 0:57ece500234e | 144 | //--------------------------------------------------------------------------- |
daryl2110 | 0:57ece500234e | 145 | template<> OS_PROCESS void TProc4::Exec() { |
daryl2110 | 0:57ece500234e | 146 | |
daryl2110 | 0:57ece500234e | 147 | keypad.CallAfterInput(&cbAfterInput); |
daryl2110 | 0:57ece500234e | 148 | keypad.Start(); |
daryl2110 | 0:57ece500234e | 149 | while (1) { |
daryl2110 | 0:57ece500234e | 150 | wait_ms(100); |
daryl2110 | 0:57ece500234e | 151 | } |
daryl2110 | 0:57ece500234e | 152 | } |
daryl2110 | 0:57ece500234e | 153 | |
daryl2110 | 0:57ece500234e | 154 | //--------------------------------------------------------------------------- |
daryl2110 | 0:57ece500234e | 155 | void OS::SystemTimerUserHook() { |
daryl2110 | 0:57ece500234e | 156 | ++count; |
daryl2110 | 0:57ece500234e | 157 | if (count % 2000 == 0) { |
daryl2110 | 0:57ece500234e | 158 | printf("\n%lld\n", count); |
daryl2110 | 0:57ece500234e | 159 | } |
daryl2110 | 0:57ece500234e | 160 | } |
daryl2110 | 0:57ece500234e | 161 | } |
daryl2110 | 0:57ece500234e | 162 | //--------------------------------------------------------------------------- |
daryl2110 | 0:57ece500234e | 163 | void OS::IdleProcessUserHook() { |
daryl2110 | 0:57ece500234e | 164 | __WFI(); |
daryl2110 | 0:57ece500234e | 165 | } |