Tommi Laurila
My Billy Bass program, see my notebook for details
Dependencies: EthernetNetIf mbed
Diff: main.cpp
- Revision:
- 0:7613b886e052
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Aug 14 19:00:53 2010 +0000
@@ -0,0 +1,424 @@
+
+
+#include "mbed.h"
+#include "SDHCFileSystem.h"
+#include "HTTPClient.h"
+#include "EthernetNetIf.h"
+
+#define SAMPLE_FREQ 40000
+#define BUF_SIZE (SAMPLE_FREQ/10)
+#define SLICE_BUF_SIZE 1
+
+typedef struct uFMT_STRUCT {
+ short comp_code;
+ short num_channels;
+ unsigned sample_rate;
+ unsigned avg_Bps;
+ short block_align;
+ short sig_bps;
+} FMT_STRUCT;
+
+short DAC_fifo[256];
+short DAC_wptr;
+short DAC_rptr;
+short DAC_on;
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+SDFileSystem sd(p5, p6, p7, p13, "sd");
+
+EthernetNetIf eth;
+HTTPClient http;
+
+void download_bmf(void);
+void load_lipsync(char[]);
+void mouth(void);
+
+void dac_out(void);
+void dingdong(void);
+
+void body_move(int);
+void tail_flap(int);
+
+int dl(char[], char[]);
+void surf(char[]);
+void pollserver(void);
+
+DigitalOut ruu1(p21); //tail
+DigitalOut ruu2(p22); //body
+DigitalOut suu1(p23);
+DigitalOut suu2(p24);
+DigitalOut ena(p25); //enable
+
+Ticker tick;
+Ticker polltick;
+#define POLLINTERVAL 10 //server polling interval in seconds
+bool pollfound = false; //flag goes up if there is something to play
+
+AnalogOut DACout(p18);
+DigitalOut relay1(p29);
+
+InterruptIn doorbell(p30);
+void dummy(void);
+
+void play_wave(char *, bool);
+
+Ticker movetick; //runs the lipsync function
+#define SAYSPEED 0.085 //speed of lipsync in seconds
+char lipmoves[300]; //array for lipmove bits
+int lippos;
+
+bool doorint = false; //doorbell interrupt flag
+
+
+int main() {
+
+//setup ethernet connection
+printf("Setting up ethernet...\n");
+EthernetErr ethErr = eth.setup();
+if(ethErr) {
+ printf("Error %d in ethernet setup.\n", ethErr);
+}//if
+
+printf("Ethernet setup OK\n");
+
+//putting doorbell pin(p30) in pullup mode so it pulls up the voltage
+//between interrupts that pull it down
+doorbell.mode(PullUp);
+
+//run interrupt function when detecting a falling edge on p30
+doorbell.fall(&dummy);
+doorbell.fall(&dingdong);
+
+lippos = 0;
+suu1 = suu2 = ruu1 = ruu2 = 0;
+ena = 1; //enable L293 chip
+
+//starting http server polling ticker (10 second intervals)
+polltick.attach(&pollserver, POLLINTERVAL);
+
+while(1) {
+ //check if polling flag is up
+ if(pollfound==true) {
+ polltick.detach();
+ doorbell.fall(&dummy);
+
+ //TODO: dl an effect description file or an sfx sound file
+
+ //download lipsync file and load it into the array
+ if(dl("http://192.168.1.2/talk/snd.bmf", "/sd/snd.bmf")==0) {
+ load_lipsync("/sd/snd.bmf");
+ }//inner if
+
+ //flap the tail before playing
+ tail_flap(2);
+
+ //play downloaded file (new waveplayer code)
+ play_wave("/sd/snd.wav", true);
+
+ //add event to eventlog (info=type:sender:description)
+ surf("http://192.168.1.2/talk/addevent.php?info=info:Billy:Played%20wavefile%20snd.wav");
+
+ //delete played sound file
+ surf("http://192.168.1.2/talk/dlok.php?delete=yes");
+
+ //add event to eventlog (info=type:sender:description)
+ surf("http://192.168.1.2/talk/addevent.php?info=info:Billy:Deleted%20wavefile%20snd.wav%20from%20server.");
+
+ //reset pollfound flag
+ pollfound = false;
+ polltick.attach(&pollserver, POLLINTERVAL);
+ doorbell.fall(&dingdong);
+ }//if pollfound
+
+ //check if doorbell flag is raised for doorbell press
+ if(doorint==true) {
+ printf("Doorbell press detected..\n");
+
+ polltick.detach();
+
+ play_wave("/sd/ns.wav", false); //doorbell sound, no lipmoves
+
+ load_lipsync("/sd/tulossa.bmf");
+
+ ruu2 = 1;//raise body
+ play_wave("/sd/tulossa.wav", true);
+ ruu2 = 0;//lower body
+
+ //add event to eventlog (info=type:sender:description)
+ surf("http://192.168.1.2/talk/addevent.php?info=info:Billy:Doorbell%20pressed");
+
+ //reattach polling ticker
+ polltick.attach(&pollserver, POLLINTERVAL);
+
+ //reset doorbell interrupt flag
+ doorint = false;
+ }//if doorint
+}//while 1
+
+}///////////// main ends //////////////////
+
+//dummy function for the interruptin 'fix'
+void dummy() {}
+
+
+//this function is attached to polltick, and it polls the server
+//every 10 seconds looking for something to download and play
+void pollserver() {
+ printf("Attempting download..\n");
+ led1 = 1;
+
+ //if download is successful, raise flag
+ if (dl("http://192.168.1.2/talk/snd.wav", "/sd/snd.wav")==0) {
+ pollfound = true;
+ polltick.detach();
+ }//if dl..
+
+ led1 = 0;
+}//pollserver
+
+
+//http download function, takes url (http://mbed.org/example.wav)
+//and target file (/sd/example.wav) as parameters
+//returns 0 on success and 1 on failure
+int dl(char url[], char target[]) {
+ int result;
+ HTTPFile f(target);
+ HTTPResult r = http.get(url, &f);
+
+ if(r==HTTP_OK) {
+ printf(" HTTP Result OK\n");
+ result=0;
+ }
+ else {
+ printf("HTTP Error %d\n", r);
+ result=1;
+ }//else
+
+ return result;
+}//dl
+
+
+//http get function "surfing the web"
+void surf(char url[]) {
+ HTTPText txt;
+
+ HTTPResult r = http.get(url, &txt);
+ if(r==HTTP_OK) {
+ printf("Surfing result :\"%s\"\n", txt.gets());
+ }//if
+ else {
+ printf("Surfing error %d\n", r);
+ }//else
+}//surf
+
+
+//doorbell interrupt code here
+//remember not to put any large operations in the interrupt handler
+void dingdong() {
+ doorint = true;
+}//dingdong
+
+
+//load lipsync data from bmf file to array in RAM
+void load_lipsync(char syncfile[]) {
+ printf("Reading lipsync from sd file\n");
+ FILE * pFile = fopen (syncfile , "r");
+ if (pFile != NULL) {
+ fgets (lipmoves , 300 , pFile);
+ printf("Lipmoves file is: %s\n", lipmoves);
+ fclose (pFile);
+ }//if
+}//lipsync
+
+
+//mouth function is attached to movetick ticker
+//and it moves billys mouth when activated
+void mouth() {
+ if(lippos < 300) {
+ suu1 = 0;
+
+ char tmpmrk;
+ tmpmrk = lipmoves[lippos];
+ int num = atoi(&tmpmrk);
+ //printf("suu on %d ", num);
+ suu2 = num;
+ lippos++;
+ }//if
+}//mouth
+
+
+void body_move(int secs) {
+ printf("making body move %d",secs);
+ ruu2 = 1;
+ wait(secs);
+ ruu2 = 0;
+}
+
+
+//tail flapping function
+void tail_flap(int howmany) {
+ for(int i=0;i<howmany;i++) {
+ ruu1=1;
+ wait(0.2);
+ ruu1=ruu2=0;
+ wait(0.2);
+ }//for
+ wait(0.3);
+}//tailflap
+
+
+void play_wave(char *wavname, bool lipmoves) {
+
+ //enable audio amps via relay 1
+ relay1=1;
+
+ unsigned chunk_id,chunk_size,channel;
+ unsigned data,samp_int,i;
+ short dac_data;
+ char *slice_buf;
+ short *data_sptr;
+ FMT_STRUCT wav_format;
+ FILE *wavfile;
+ long slice,num_slices;
+ DAC_wptr=0;
+ DAC_rptr=0;
+
+ size_t result;
+
+ for (i=0;i<256;i+=2) {
+ DAC_fifo[i]=0;
+ DAC_fifo[i+1]=3000;
+ }
+ DAC_wptr=4;
+ DAC_on=0;
+
+ printf("Playing wave file '%s'\r\n",wavname);
+
+ wavfile=fopen(wavname,"rb");
+ if (!wavfile) {
+ printf("Unable to open wav file '%s'\r\n",wavname);
+ exit(1);
+ }
+
+ fread(&chunk_id,4,1,wavfile);
+ fread(&chunk_size,4,1,wavfile);
+ while (!feof(wavfile)) {
+ printf("Read chunk ID 0x%x, size 0x%x\r\n",chunk_id,chunk_size);
+ switch (chunk_id) {
+ case 0x46464952:
+ fread(&data,4,1,wavfile);
+ printf("RIFF chunk\r\n");
+ printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size);
+ printf(" RIFF type 0x%x\r\n",data);
+ break;
+ case 0x20746d66:
+ fread(&wav_format,sizeof(wav_format),1,wavfile);
+ printf("FORMAT chunk\r\n");
+ printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size);
+ printf(" compression code %d\r\n",wav_format.comp_code);
+ printf(" %d channels\r\n",wav_format.num_channels);
+ printf(" %d samples/sec\r\n",wav_format.sample_rate);
+ printf(" %d bytes/sec\r\n",wav_format.avg_Bps);
+ printf(" block align %d\r\n",wav_format.block_align);
+ printf(" %d bits per sample\r\n",wav_format.sig_bps);
+ if (chunk_size > sizeof(wav_format))
+ fseek(wavfile,chunk_size-sizeof(wav_format),SEEK_CUR);
+// create a slice buffer large enough to hold multiple slices
+ slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE);
+ if (!slice_buf) {
+ printf("Unable to malloc slice buffer");
+ exit(1);
+ }
+ break;
+ case 0x61746164:
+ slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE);
+ if (!slice_buf) {
+ printf("Unable to malloc slice buffer");
+ exit(1);
+ }
+ num_slices=chunk_size/wav_format.block_align;
+ printf("DATA chunk\r\n");
+ printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size);
+ printf(" %d slices\r\n",num_slices);
+ printf(" Ideal sample interval=%d\r\n",(unsigned)(1000000.0/wav_format.sample_rate));
+ samp_int=1000000/(wav_format.sample_rate);
+ printf(" programmed interrupt tick interval=%d\r\n",samp_int);
+
+// starting up ticker to write samples out -- no printfs until tick.detach is called
+ if(lipmoves==true) {
+ lippos = 0; //reset lipmoves position counter
+ movetick.attach(&mouth, SAYSPEED);
+ }
+ tick.attach_us(&dac_out, samp_int);
+
+ DAC_on=1;
+ for (slice=0;slice<num_slices;slice+=SLICE_BUF_SIZE) {
+
+ result = fread(slice_buf,wav_format.block_align*SLICE_BUF_SIZE,1,wavfile);
+ if (feof(wavfile)) {
+ printf("Oops -- not enough slices in the wave file\r\n");
+
+ break;
+ }
+
+ data_sptr=(short *)slice_buf;
+ for (i=0;i<SLICE_BUF_SIZE;i++) {
+ dac_data=0;
+
+// for a stereo wave file average the two channels.
+ for (channel=0;channel<wav_format.num_channels;channel++) {
+ switch (wav_format.sig_bps) {
+ case 16:
+ dac_data+=( ((int)(*data_sptr++)) +32768 );
+ break;
+ case 8:
+ dac_data+=( ((int)(*data_sptr++)) +32768 <<8);
+ break;
+ }
+ }
+ DAC_fifo[DAC_wptr]=dac_data;
+ DAC_wptr=(DAC_wptr+1) & 0xff;
+ while (DAC_wptr==DAC_rptr) {
+ wait_us(10);
+ }
+ }
+ }
+ DAC_on=0;
+ suu1 = suu2 = 0;
+ tick.detach();
+ if(lipmoves==true) {
+ movetick.detach();
+ }
+ printf("Tickers detached\r\n");
+ free(slice_buf);
+ break;
+ case 0x5453494c:
+ printf("INFO chunk, size %d\r\n",chunk_size);
+ fseek(wavfile,chunk_size,SEEK_CUR);
+ break;
+ default:
+ printf("unknown chunk type 0x%x, size %d\r\n",chunk_id,chunk_size);
+ data=fseek(wavfile,chunk_size,SEEK_CUR);
+ break;
+ }
+ fread(&chunk_id,4,1,wavfile);
+ fread(&chunk_size,4,1,wavfile);
+ }
+ printf("++++++++++++ Done with wave file ++++++++++\r\n");
+ fclose(wavfile);
+
+ //disable audio amps via relay 1
+ relay1=0;
+}//play-wave
+
+
+void dac_out() {
+ if (DAC_on) {
+ DACout.write_u16(DAC_fifo[DAC_rptr]);
+ DAC_rptr=(DAC_rptr+1) & 0xff;
+ }//if
+}//dac-out