![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
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