Stream and Play music using UART of VS1010

[eswaran]

Hi,

We are having VS1010 evaluation board. We want to stream one music file (mp3 or any other format) through UART of VS1010 and want to play the same.

Please suggest me the possibility of doing the same in the evaluation board.

Please share me if any sample codes are available

thanks & regards,
Kotteeswaran.E

[Panu]

Hi!

Yeah... we've written some code for that, but I think it should be modified a little... Hmm, which VS1010 chip you have? VS1010B? VS1010C?

-Panu

[eswaran]

Hi Sir,

VS1010C is used in our board.

thanks & regards,
Kotteeswaran.E

[eswaran]

Hi Banu,

Is it possible to get some updates today.

thanks & regards,
Kotteeswaran.E

[eswaran]

Even through SPI is also ok instead of UART.

thanks & regards,
Kotteeswaran.E

[Panu]

There is some UART stream receiver code hidden in the ROM but you need to first run some software on the chip to activate it.

Is it possible to get some updates today.

Please don't rush... I'll see what I can do.

-Panu

[Panu]

Hi!

Sorry, the UART streaming requires some more work. I'll get back to you on early January.

-Panu

[eswaran]

Hi Sir,

Any updates on this.

thanks & regards,
Kotteeswaran.E

[Panu]

Hi!

I'm working on it. Can you tell a little more about your application?

-Panu

[Panu]

Dear Eswaran,
here is the source code of a Win32 application which streams an MP3 file to the VS1010 using the stream protocol. It's very prone to bit errors, but It usually works at least once after resetting the VS1010.

-Panu


Code for VS1010C:

Code: Select all

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>

#define COM_PORT "COM7"
#define COM_SPEED 460800

static HANDLE port=0;
static COMMTIMEOUTS originalTimeouts;

	unsigned char outbuf[16384];
	unsigned char inbuf[16384];
	unsigned long bytesWritten;
	unsigned long bytesReceived;
	unsigned long transaction = 0;

static bool ComSetParams(HANDLE port,int baud) {
	DCB dcb;
	memset(&dcb,0,sizeof(dcb));
	dcb.DCBlength=sizeof(dcb);
	dcb.BaudRate=baud;
	dcb.fBinary=1;
	dcb.Parity=NOPARITY;
	dcb.StopBits=ONESTOPBIT;
	dcb.ByteSize=8;
	return SetCommState(port,&dcb)!=0;
}

static bool OpenComPort(char* p,int targetSpeed) {
	char portname[16];
	sprintf(portname,"\\\\.\\%s",p);
	port=CreateFile(portname,GENERIC_READ|GENERIC_WRITE,0,0,OPEN_EXISTING,0,0);
	if(!port) {
		printf("COM port is not valid: %s\n",portname);
		return false;
	}
	if(!GetCommTimeouts(port,&originalTimeouts)) {
		printf("Cannot get comm timeouts\n");
		return false;
	}
	COMMTIMEOUTS newTimeouts={200,10,100,10,100};
	SetCommTimeouts(port,&newTimeouts);
	if(!ComSetParams(port,targetSpeed)) {
		SetCommTimeouts(port,&originalTimeouts);
		CloseHandle(port);
		printf("Failed to set COM parameters\n");
		return false;
	}
	printf("Successfully set COM parameters\n");
	return true;
}


// Send a BREAK token by switching to a low bitrate for sending a long zero.
void SendBreak() {
	char outbuf[1];
	unsigned long bytesWritten;
	ComSetParams(port,9600);
	outbuf[0] = 0;
	WriteFile(port,outbuf,1,&bytesWritten,NULL);
	ComSetParams(port,COM_SPEED);
	PurgeComm(port, PURGE_RXABORT | PURGE_RXCLEAR);
	Sleep(10);
}



// Poke cs.cancel to VS1010 memory
void fSendCancel() {
	outbuf[0] = 0x30;
	outbuf[1] = '~';
	outbuf[2] = 0x30;
	outbuf[3] = 'b';
	outbuf[4] = 0x30;
	outbuf[5] = 'e';
	outbuf[6] = 0x30;
	outbuf[7] = 'x';
	outbuf[8] = 0x30;
	outbuf[9] = '1';
	outbuf[10] = 0x30;
	outbuf[11] = 'w';
	WriteFile(port,outbuf,12,&bytesWritten,NULL);
}


void SendUnCancel() {
	outbuf[0] = 0x30;
	outbuf[1] = '~';
	outbuf[2] = 0x30;
	outbuf[3] = 'b';
	outbuf[4] = 0x30;
	outbuf[5] = 'e';
	outbuf[6] = 0x30;
	outbuf[7] = 'x';
	outbuf[8] = 0x30;
	outbuf[9] = '0';
	outbuf[10] = 0x30;
	outbuf[11] = 'w';
	WriteFile(port,outbuf,12,&bytesWritten,NULL);
}

void SendUnCancel() {
	outbuf[0] = 0x30;
	outbuf[1] = '~';
	outbuf[2] = 0x30;
	outbuf[3] = 'b';
	outbuf[4] = 0x30;
	outbuf[5] = 'e';
	outbuf[6] = 0x30;
	outbuf[7] = 'x';
	outbuf[8] = 0x30;
	outbuf[9] = '0';
	outbuf[10] = 0x30;
	outbuf[11] = 'w';
	WriteFile(port,outbuf,12,&bytesWritten,NULL);
}




void main(int argc, char **argv) {
	int i;

	int vs1010dataBufferFree = 0; //If no other guess, send this many bytes (may happen during startup..)
	FILE *f;

	printf ("ArgC: %d. ArgV[1]:%d\n",argc,argv[1]);
	if(!OpenComPort(COM_PORT,COM_SPEED)) {

		Sleep(500);
		return;
	}	

	int zeros = 2000;

	f = fopen(argv[1],"rb");
	if (!f) {
		printf("no mp3 file");
		Sleep(1000);
		exit(2);
	}

	ReadFile(port,inbuf,10,&bytesReceived,NULL); printf("#1 %d bytes:%02x %02x %02x \n",bytesReceived,inbuf[0],inbuf[1],inbuf[2]);


	outbuf[0] = 0x53; //Send PREPARE opcode - VS1010 will start listening to stream
	WriteFile(port,outbuf,1,&bytesWritten,NULL);
	Sleep(10);

	ReadFile(port,inbuf,10,&bytesReceived,NULL); printf("#2 %d bytes:%02x %02x %02x \n",bytesReceived,inbuf[0],inbuf[1],inbuf[2]);
	



#if 1


	SendBreak();
	Sleep(1000);
	vs1010dataBufferFree = 0;

	ReadFile(port,inbuf,100,&bytesReceived,NULL);
	printf("Received %d bytes:%02x ",bytesReceived,inbuf[0]);


	restart:

	outbuf[0] = 0x51; //Send PREPARE opcode - VS1010 will start listening to stream
	WriteFile(port,outbuf,1,&bytesWritten,NULL);
	Sleep(100);
	SendUnCancel();

	//outbuf[0] = 0x40; //Send RESET opcode
	//WriteFile(port,outbuf,1,&bytesWritten,NULL);
	
	i=1;

	while (i++) {
	    Sleep(1);	
		ReadFile(port,inbuf,1,&bytesReceived,NULL);
		printf("Received %d bytes:%02x ",bytesReceived,inbuf[0]);
		if ((bytesReceived == 1) && (inbuf[0]>0xf0) && (inbuf[0]<0xfc)) {
			i=0;
		}
		outbuf[0] = 0x51; // Query for stream buffer available
		WriteFile(port,outbuf,1,&bytesWritten,NULL);

	}

	vs1010dataBufferFree = 0;

	while(1) {

		printf("\n Transaction %d: ",++transaction);
		if (vs1010dataBufferFree==0) {
			bytesReceived = 10;
			while (bytesReceived == 10) {
				ReadFile(port,inbuf,10,&bytesReceived,NULL);
				printf("%d:%02x%02x%02x ",bytesReceived,inbuf[0],inbuf[1],inbuf[2]);
			}

			outbuf[0] = 0x10;
			WriteFile(port,outbuf,1,&bytesWritten,NULL);
			printf("vFree:");
			inbuf[0] = 0;
			Sleep(1);
			ReadFile(port,inbuf,10,&bytesReceived,NULL);
			printf("%d:%02x%02x%02x ",bytesReceived,inbuf[0],inbuf[1],inbuf[2]);

			if (bytesReceived) {
				vs1010dataBufferFree = inbuf[bytesReceived-1];
				if (vs1010dataBufferFree > 0x11) {
					printf("NotFreeReply(0x%02x)!",vs1010dataBufferFree);
					SendUnCancel();
					Sleep(100);
					vs1010dataBufferFree = 0;
				}
				vs1010dataBufferFree *= 32; //Convert to bytes
				printf("fr1:%d ",vs1010dataBufferFree);
			}
		}
		SendUnCancel();
		printf("fr2:%d ",vs1010dataBufferFree);
		if (vs1010dataBufferFree) {
			int fr = 0;
			if (fr=fread(&outbuf[3],1,vs1010dataBufferFree,f)) {
				unsigned char tmpbuf[3];
				outbuf[0]=0x20;
				outbuf[1]=fr>>8;
				outbuf[2]=fr&0xff;

				printf("free=%d read=%d ",vs1010dataBufferFree,fr);

				WriteFile(port,outbuf,1,&bytesWritten,NULL);
				ReadFile(port,inbuf,1,&bytesReceived,NULL);
				printf("'%d:%02x=fc ",bytesReceived,inbuf[0]);
				if (inbuf[0]==0xf0) {	
					printf("\nVS1010 says reset\n");
					goto restart;
				}
				SendUnCancel();
				WriteFile(port,&outbuf[1],fr+2,&bytesWritten,NULL);
				printf("wrot %4d bytes ",bytesWritten-3); //-3 for the protocol overhead
				ReadFile(port,inbuf,1,&bytesReceived,NULL);
				printf("Final %d:%02x ",bytesReceived,inbuf[0]);
				if (!bytesReceived) {
					printf("ERROR: No reply to packet\n");
					Sleep(10000);
					break;
				}
				SendUnCancel();
				if (inbuf[0] <= 0x11) {
					vs1010dataBufferFree = (inbuf[0]) * 32; //Convert to bytes
				} else {
					vs1010dataBufferFree = 0;
				}

			} else {
				vs1010dataBufferFree=0;
				break;
			}
		}
	} 	


#endif

	printf("End of File.\n");
	Sleep(2000);

}

Code for VS1010B:

Code: Select all

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>

#define COM_PORT "COM7"
#define COM_SPEED 460800

static HANDLE port=0;
static COMMTIMEOUTS originalTimeouts;

	unsigned char outbuf[16384];
	unsigned char inbuf[16384];
	unsigned long bytesWritten;
	unsigned long bytesReceived;
	unsigned long transaction = 0;

static bool ComSetParams(HANDLE port,int baud) {
	DCB dcb;
	memset(&dcb,0,sizeof(dcb));
	dcb.DCBlength=sizeof(dcb);
	dcb.BaudRate=baud;
	dcb.fBinary=1;
	dcb.Parity=NOPARITY;
	dcb.StopBits=ONESTOPBIT;
	dcb.ByteSize=8;
	return SetCommState(port,&dcb)!=0;
}

static bool OpenComPort(char* p,int targetSpeed) {
	char portname[16];
	sprintf(portname,"\\\\.\\%s",p);
	port=CreateFile(portname,GENERIC_READ|GENERIC_WRITE,0,0,OPEN_EXISTING,0,0);
	if(!port) {
		printf("COM port is not valid: %s\n",p);
		return false;
	}
	if(!GetCommTimeouts(port,&originalTimeouts)) {
		printf("Cannot get comm timeouts\n");
		return false;
	}
	COMMTIMEOUTS newTimeouts={200,10,100,10,100};
	SetCommTimeouts(port,&newTimeouts);
	if(!ComSetParams(port,targetSpeed)) {
		SetCommTimeouts(port,&originalTimeouts);
		CloseHandle(port);
		printf("Failed to set COM parameters\n");
		return false;
	}
	printf("grande success\n");
	return true;
}

void SendBreak() {
	char outbuf[1];
	unsigned long bytesWritten;
	ComSetParams(port,9600);
	outbuf[0] = 0;
	WriteFile(port,outbuf,1,&bytesWritten,NULL);
	ComSetParams(port,COM_SPEED);
	PurgeComm(port, PURGE_RXABORT | PURGE_RXCLEAR);
	Sleep(10);
}

void SendCancel() {
	outbuf[0] = 0x30;
	outbuf[1] = '~';
	outbuf[2] = 0x30;
	outbuf[3] = 'b';
	outbuf[4] = 0x30;
	outbuf[5] = 'e';
	outbuf[6] = 0x30;
	outbuf[7] = 'x';
	outbuf[8] = 0x30;
	outbuf[9] = '1';
	outbuf[10] = 0x30;
	outbuf[11] = 'w';
	WriteFile(port,outbuf,12,&bytesWritten,NULL);
}


void main(int argc, char **argv) {

	int dreq = 0; //If no other guess, send this many bytes (may happen during startup..)
	FILE *f;
	if(!OpenComPort(COM_PORT,COM_SPEED)) {
		Sleep(500);
		return;
	}

	int zeros = 2000;
	f = fopen(argv[1],"rb");
	if (!f) {
		printf("no mp3 file");
		Sleep(1000);
		exit(2);
	}

	SendBreak();
	Sleep(100);

	Sleep(1000);

	dreq = 0;
	Sleep(100);

	while(1) {

		if ((transaction == 100) && ftell(f)<3000) { //100 transactions and file not proceeding, cancel...
			SendCancel();
		}

		printf("\n Transaction %d: ",++transaction);
		if (dreq==0) {
			outbuf[0] = 0x10;
			WriteFile(port,outbuf,1,&bytesWritten,NULL);
			printf("DREQ:");
			ReadFile(port,inbuf,1,&bytesReceived,NULL);
			printf("%d:%02x ",bytesReceived,inbuf[0]);

			if (bytesReceived) {
				dreq = inbuf[bytesReceived-1]*32;
			}
		}
		if (dreq) {
			int fr = 0;
			if (fr=fread(&outbuf[3],1,dreq,f)) {
				unsigned char tmpbuf[3];
				dreq=0;
				outbuf[0]=0x20;
				outbuf[1]=fr>>8;
				outbuf[2]=fr&0xff;
				WriteFile(port,outbuf,fr+3,&bytesWritten,NULL);
				printf("wrote %4d bytes ",bytesWritten-3); //-3 for the protocol overhead
				ReadFile(port,inbuf,1,&bytesReceived,NULL);
				printf("Finally %d:%02x ",bytesReceived,inbuf[0]);
				if (!bytesReceived) {
					printf("ERROR: No reply to packet\n");
					Sleep(10000);
					break;
				}
				if ((inbuf[0]&0x80) == 0) {
					printf("ERROR: Reply to packet does not have bit 7 set\n");
					Sleep(10000);
					break;
				}
				dreq = (inbuf[0] & 0x7f) * 16;
			} else {
				dreq=0;
				break;
			}
		}
	} 
	printf("EOF");
	Sleep(5000);
}