A S
Advanced Operating Systems - Final Project A @ Tokyo Tech ////////////// Author: Chu Van Thiem and Sidik Soleman ////////////// A WAVE file player on the MBED Application Board with an interface to a software on PC via a TCP connection. ////////////// Main functions: 1. Browse files of an attached USB flash 2. The list of the files of the attached USB are displayed on the LCD 3. Use an joystick to select a WAVE file and give an instruction to play that file 4. Adjust the volume using a potentiometer 5. Output audio to the analog audio out jack ////////////// Software (https://github.com/thiemcv/VS/tree/master/Terminal): 1. Connect with the MBED application board via Ethernet connection 2. Read the list of files stored on the USB flash 3. Write files to the USB flash
Dependencies: C12832_lcd EthernetInterface USBHost mbed-rtos mbed wave_player
Diff: src/main.cpp
- Revision:
- 1:3b567aa3b09e
- Parent:
- 0:6a2537e4188b
- Child:
- 2:5bc47e544b8d
--- a/src/main.cpp Tue Jan 07 04:15:05 2014 +0000
+++ b/src/main.cpp Sun Feb 02 10:49:19 2014 +0000
@@ -1,31 +1,104 @@
#include "mbed.h"
+#include "rtos.h"
#include "EthernetInterface.h"
+#include "USBHostMSD.h"
+#include "usb.h"
+#include "tcp_task.h"
+#include "player.h"
+
+extern Ticker ticker;
+extern Ticker tickervolume;
+extern volatile int joyvalue;
+
+// Ethernet
+EthernetInterface eth;
+
+// Analog Out Jack
+//AnalogOut DACout(p18);
+// On Board Speaker
+//PwmOut PWMout(p26);
+// Wave file player
+//wave_player waver(&DACout,&PWMout);
+
+string songfile;
+char* song;
+
+volatile int cmd_en = 1;
+volatile int play_en = 1;
int main() {
- EthernetInterface eth;
- eth.init(); //Use DHCP
- eth.connect();
- printf("IP Address is %s\n", eth.getIPAddress());
+ int current = 0;
+ // USB
+ usb u("usb");
+ while(!u.connect())
+ {
+ Thread::wait(5);
+ }
+ u.listdir("/");
+ /*u.listdir("/");
- TCPSocketConnection sock;
- sock.connect("mbed.org", 80);
+ for(vector<string>::iterator it = u.filenames.begin(); it < u.filenames.end(); it++)
+ {
+ printf("%s\n", it->c_str());
+ }*/
+ /*
+ FILE *wave_file;
+ //setup PWM hardware for a Class D style audio output
+ PWMout.period(1.0/400000.0);
+ //open wav file and play it
+ string s = "/usb/";
+ s.append((u.filenames.begin())->c_str());
+ wave_file=fopen(s.c_str(),"r");
+ waver.play(wave_file);
+ fclose(wave_file);
+ */
- char http_cmd[] = "GET /media/uploads/mbed_official/hello.txt HTTP/1.0\n\n";
- sock.send_all(http_cmd, sizeof(http_cmd)-1);
+ // Initialize ethernet interface
+ eth.init(IP_ADDR, IP_MASK, GW_ADDR);
+ eth.connect();
+ //printf("Network setup completed!\n");
- char buffer[300];
- int ret;
- while (true) {
- ret = sock.receive(buffer, sizeof(buffer)-1);
- if (ret <= 0)
- break;
- buffer[ret] = '\0';
- printf("Received %d chars from server:\n%s\n", ret, buffer);
+ // LCD
+ welcome();
+ /* print initiate */
+ print(&(u.filenames), 0);
+ /* reading the joystick value */
+ ticker.attach(joystickcontrol, 0.004);
+ /* reading the volume */
+ tickervolume.attach(controlvolume, 0.004);
+
+ // TCPIP thread
+ Thread thread_tcp(tcp_thread, NULL, osPriorityBelowNormal, 512, NULL);
+ Thread thread_cmd(cmd_thread, &u, osPriorityBelowNormal, 2048, NULL);
+
+ while(1)
+ {
+ if (joyvalue == 1){
+ if(u.filenames.size()>0){
+ current = (current-1)%u.filenames.size();
+ print(&(u.filenames),current);
+ }
+ }
+ else if (joyvalue == 2){
+ if(u.filenames.size()>0){
+ current = (current+1)%u.filenames.size();
+ print(&(u.filenames),current);
+ }
+ }
+ else if (joyvalue == 3){
+ if(u.filenames.size()>0){
+ if (play_en)
+ {
+ cmd_en = 0;
+ songfile = "/usb/";
+ songfile = songfile + u.filenames.at(current);
+ song = (char*)songfile.c_str();
+ play(song);
+ cmd_en = 1;
+ }
+ }
+ }
+ joyvalue = 0;
+ Thread::wait(5);
}
-
- sock.close();
-
- eth.disconnect();
-
- while(1) {}
}