![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Dependencies: keypad SDHCFileSystem TextLCD mbed FPointer wave_player
main.cpp
- Committer:
- daryl2110
- Date:
- 2012-02-20
- Revision:
- 0:57ece500234e
File content as of revision 0:57ece500234e:
/* Final Year Project for Ngee Ann Polytechnic Electrical Engineering Year 3 Project Title: Bus Assistance for the Visually Impaired */ #include "mbed.h" #include "scmRTOS.h" #include "wave_player.h" #include "SDHCFileSystem.h" #include "keypad.h" #include "TextLCD.h" Serial xbee(p9, p10); DigitalOut rst1(p11); SDFileSystem sd(p5, p6, p7, p8, "sd"); AnalogOut AudioOut(p18); wave_player waver(&AudioOut); //Keypad keypad( p24, p23, p22, p21, p28, p27, p26, p25); TextLCD lcd(p15, p16, p17, p18, p19, p20); DigitalOut myled(LED1);//Create variable for Led 1 on the mbed DigitalOut myled1(LED2);//Create variable for Led 2 on the mbed //BusOut seven(p27, p26, p25, p24, p23, p22, p21); //BusOut leds(p28, p29, p30); DigitalOut led(LED1); DigitalOut led1(LED2); //OS Timer/interrupt OS::TEventFlag XBee; // process types //typedef OS::process<OS::pr1, 5000> TProc1; //7 Segment LED typedef OS::process<OS::pr0, 4000> TProc2; // XBee Communication //typedef OS::process<OS::pr0, 8000> TProc3; // Playing of Audio //typedef OS::process<OS::pr0 1000> TProc4; // Interrupt of Keypad // process objects //TProc1 Proc1; TProc2 Proc2; //TProc3 Proc3; //TProc4 Proc4 #define MAXBUS 10 #define MAXLEN 4 #define ENDKEY 14 int req; char Bus[MAXBUS][MAXLEN]; char NumIx = 0; // Point to current index of Bus number char BusIx = 0; // Point to current bus bool BusFull = false; // Bus number buffer is full char KeyCh; char Keytable[] = { '1', '2', '3', 'A', '4', '5', '6', 'B', '7', '8', '9', 'C', '*', '0', '#', 'D' }; uint32_t cbAfterInput(uint32_t key) { KeyCh = Keytable[key]; if (BusFull) { printf("Bus number is already full\n"); return 2; } if (NumIx < MAXLEN - 1) { if (key != ENDKEY) { // Terminating key lcd.putc(KeyCh); printf("%c", KeyCh); } else { // Terminating key is entered printf("\nBus(%d,%d)=%c\n", BusIx, NumIx, KeyCh); BusIx++; NumIx = 0; } } return 0; } //--------------------------------------------------------------------------- long long count = 0; int main() { printf("\nInitialising ...\n"); rst1 = 0; //Set reset pin to 0 myled = 0;//Set LED1 to 0 myled1 = 0;//Set LED2 to 0 wait_ms(1);//Wait at least one millisecond rst1 = 1;//Set reset pin to 1 wait_ms(1);//Wait another millisecond OS::Run(); memset(&Bus, 0, MAXBUS * MAXLEN); //seven = Bus[BusIx][NumIx]; } //--------------------------------------------------------------------------- template<> OS_PROCESS void TProc1::Exec() { int i; int n = 1; for (;;) { // toggling between 7 seg led for (int i=0; i<3; i++) { leds = 0x01 << n; n = (++n) % 3; seven = Bus[BusIx][NumIx]; } } } //--------------------------------------------------------------------------- template<> OS_PROCESS void TProc2::Exec() { for (;;) { if (xbee.readable()) { req = xbee.getc(); printf("req = %c\n", req); //XBee.SignalISR(); Sleep(2000); } } } //--------------------------------------------------------------------------- template<> OS_PROCESS void TProc3::Exec() { for (;;) { if (req == 'r') { printf("Came here 2 \n"); FILE *fp = fopen("/sd/wf/Bus.wav","r"); waver.play(fp); printf("playing"); fseek(fp, 0, SEEK_SET); fclose(fp); } } //--------------------------------------------------------------------------- template<> OS_PROCESS void TProc4::Exec() { keypad.CallAfterInput(&cbAfterInput); keypad.Start(); while (1) { wait_ms(100); } } //--------------------------------------------------------------------------- void OS::SystemTimerUserHook() { ++count; if (count % 2000 == 0) { printf("\n%lld\n", count); } } } //--------------------------------------------------------------------------- void OS::IdleProcessUserHook() { __WFI(); }