[KPal]

Hello.

I have a problem with corrupted data, readed from /dev/hssdriver (hssdriver.ko).

I don't find any information or sample code with read function from HSS driver.

Please, help me.

[KPal]

I have a board (like IXDP425) with IXP425 and Linux.
I need to use HSS interface to read (and write) a data from it and then send throw Ethernet (UDP).
I use ixp400AccessLibrary-2_4, IPL_IDS_FoundationLibrary_V1_1 and BSD_IDS_HSS_Drv_V1_1.
Driver allows me to read/write in channilized mode from/to “/dev/hssdriver”.

I open and init (as showed in codelets) hssdev with 32 IX_DSP_TS_V64K timeslots
#define IX_DSP_CODELET_NUM_TIMESLOT 32
IX_HSSACC_CLK_SPEED_2048KHZ
TX: IX_HSSACC_SYNC_CLK_DIR_OUTPUT
RX: IX_HSSACC_SYNC_CLK_DIR_INPUT

fdDev = open("/dev/hssdriver", O_RDWR);
if(!fdDev)
{
perror("open:");
return 1;
}
//Initialize HSS port
res = ioctl(fdDev, IX_DSR_HSS_INIT, &hss_port_config);
if (res != 0)
{
printf("HssPortInit: Init HSS failed .. \n");
return 1;
}
printf("HssPortInit: Init HSS Ok!\n");


Then i read from HSS dev, sorted data (because circular buffer is PCM buff * 2) and send it to socket.

BYTE pcHssReadBuffRaw[32*80*2];

BYTE pcHssReadBuff[32*80*2];

btCurCycleBuf = 0;

while(1)

{

res = read(fdDev, pcHssReadBuffRaw, sizeof(pcHssReadBuffRaw));

for(int n=0; n<32; n++)

pcHssReadBuff[n*80] = pcHssReadBuffRaw[n*80*2 + btCurCycleBuf*80];

if(btCurCycleBuf==0) btCurCycleBuf=1; else btCurCycleBuf=0;

sendto(...);
}

And i find, that data readed from hssdev is not right.
I find, that when i insert in while(1) cycle printf("\n"), the situation is more better.
Also i find, that there are different situation, when i run this read programm from terminal console or from telnet 127.0.0.1.


P.S.
And also one moment: on default, the parametr in HssDriverFunc.c is #define NO_RACE_CONDITION 1

But in this case, the read function is not blocked while data from HSS are not received.

I change NO_RACE_CONDITION to 0.

Is this corrected?

[KPal]

This problem was beacuse i used a channilized driver for my task.
I need a channel on 32 timeslots, but channalized mode has not supported this mode.
Now i writing a HSS packetized driver.