Problem getting A&D memory data

qtarant · January 25, 2007, 12:34pm

Hi Everybody.

I am developing an application that make these steps:

Gets a file from a web server (170 Kb)
Stores it in the A&D memory
Gets this data from A&D memory to send it though UART1.

I have a problem in step 3, because I have got to store the file in the A&D memory (I always got OK as a result to adWrite function), but when I try to retrieve the stored info through adInfo function and info.data pointer, I didn’t get the information I wrote, or at least, I don’t know how to get that information. If I print the info.remaining and info.size parameters from adInfo function I get the correct answer.

This is my relevant code:

void Handler_wipHTTP_Status (wip_event_t *ev, void * ctx)
{
	wip_channel_t http_channel;
	u32 ret;
	s32 result;
	s32 i;
	ascii url_dest [70];
	u8 firmwareGPS [10240];
	u8 * GPS_data_Flash;
	u8 data_show [100];
	adl_adState_t State;
	adl_adInfo_t * info;
	
	http_channel = ev -> channel;
	switch (ev->kind)
	{
		case WIP_CEV_OPEN:
			wm_sprintf(url_dest,"GET /gps/phx_1_5_2_bE1.ski HTTP/1.1\r\n");
			wip_write(http_ch,url_dest,37);
   			wip_write(http_ch,"Host: 194.224.225.162\r\n\r\n",25);
   			// Reserved space in the A&D memory
	   		firmgps_adCellHandle = adl_adSubscribe (FLH_ID_FIRMGPS, 204800);
	   		// Reserved space in the RAM memory (100Kb)
	   		firmwareGPS_Write = adl_memGet (102400);
	   		if (firmwareGPS_Write == NULL)
	   			adl_atSendResponse ( ADL_AT_UNS, "\r\nTHERE IS NO MORE RAM MEMORY\r\n");
	   		for (i=0;i<102400;i++)
	   			firmwareGPS_Write [i] = '\0';
   			cont = 0;
			break;
		case WIP_CEV_READ:
			// Reading from web server socket
			while ((ret = wip_read (http_channel,&firmwareGPS,10240)) > 0)
			{
				// Add to total bytes received
				cont = cont + ret;
			}
			wm_sprintf(RspStr,"Received %d bytes\r\n",cont);
			adl_atSendResponse ( ADL_AT_UNS, RspStr);
			if (cont_old == 0)
			{
				// If it is the first block of bytes from the socket
				// we show 100 first bytes that we have received
				for (i = 0; i < 100; i++)
    					data_show [i] = firmwareGPS[i];
				adl_atSendResponse ( ADL_AT_UNS, data_show);
			}
			cont_old = cont;
			if (cont > 102400)
			{
				// If we have reached the RAM space limit, we write our buffer
				// in the A&D memory, release RAM memory and reserved another RAM memory block (100 Kb)
				if ( firmgps_adCellHandle >= OK )
				{
					// We check our buffer before writing to A&D memory
					for (i = 0; i < 100; i++)
    						data_show [i] = (u8) firmwareGPS_Write [i];
					adl_atSendResponse ( ADL_AT_UNS, "\r\nDATA TO WRITE: ");
					adl_atSendResponse ( ADL_AT_UNS, data_show);
					result = adl_adWrite (firmgps_adCellHandle,cont,firmwareGPS_Write);
					wm_sprintf(RspStr,"STORED %d bytes %d\r\n",cont, result);
					adl_atSendResponse ( ADL_AT_UNS, RspStr);
					switch (result)
					{
						case OK:
							adl_atSendResponse ( ADL_AT_UNS, "WRITE OK\r\n");
							break;
						case ADL_RET_ERR_UNKNOWN_HDL:
							adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_UNKNOWN_HDL\r\n");
							break;
						case ADL_RET_ERR_PARAM:
							adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_PARAM\r\n");
							break;
						case ADL_RET_ERR_BAD_STATE:
							adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_BAD_STATE\r\n");
							break;
						case ADL_AD_RET_ERR_OVERFLOW:
							adl_atSendResponse ( ADL_AT_UNS, "ADL_AD_RET_ERR_OVERFLOW\r\n");
							break;
						case ADL_RET_ERR_SERVICE_LOCKED:
							adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_SERVICE_LOCKED\r\n");
							break;
					}
					// Release RAM buffer
					adl_memRelease (firmwareGPS_Write);
					// Get of a new 100Kb RAM memory block
					firmwareGPS_Write = adl_memGet (128000);
	   				if (firmwareGPS_Write == NULL)
	   					adl_atSendResponse ( ADL_AT_UNS, "\r\nTHERE IS NO MORE RAM MEMORY\r\n");
	   				cont = ret;
				}
			}
			// We add received bytes from web server to our RAM memory buffer
			wm_strcat (firmwareGPS_Write,firmwareGPS);
			break;
		case WIP_CEV_PEER_CLOSE:
			wm_sprintf( RspStr, "\r\n+WIPHTTP_GPS: CLOSING WEB SERVER CONNECTION");
    			adl_atSendResponse ( ADL_AT_UNS, RspStr);
    			// We have received the whole file, close our HTTP connection
			wip_close (http_channel);
			// Storing the 2nd block of 100kb into A&D memory
			// First, we check if we are subscribed to the A&D memory cell
			if ( firmgps_adCellHandle >= OK )
			{
				// Writing data
				result = adl_adWrite (firmgps_adCellHandle,cont, firmwareGPS_Write);
				wm_sprintf(RspStr,"STORED %d bytes %d\r\n",cont, result);
				adl_atSendResponse ( ADL_AT_UNS, RspStr);
				switch (result)
				{
					case OK:
						adl_atSendResponse ( ADL_AT_UNS, "WRITE OK\r\n");
						break;
					case ADL_RET_ERR_UNKNOWN_HDL:
						adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_UNKNOWN_HDL\r\n");
						break;
					case ADL_RET_ERR_PARAM:
						adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_PARAM\r\n");
						break;
					case ADL_RET_ERR_BAD_STATE:
						adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_BAD_STATE\r\n");
						break;
					case ADL_AD_RET_ERR_OVERFLOW:
						adl_atSendResponse ( ADL_AT_UNS, "ADL_AD_RET_ERR_OVERFLOW\r\n");
						break;
					case ADL_RET_ERR_SERVICE_LOCKED:
						adl_atSendResponse ( ADL_AT_UNS, "ADL_RET_ERR_SERVICE_LOCKED\r\n");
						break;
				}
			}
			adl_adFinalise (firmgps_adCellHandle);
			adl_memRelease (firmwareGPS_Write);
			adl_adUnsubscribe (firmgps_adCellHandle);
			// Subscription to get info from A&D
			firmgps_adCellHandle = adl_adSubscribe (FLH_ID_FIRMGPS, 204800);
			adl_adGetState (&State);
			wm_sprintf( RspStr, "\r\n+ADSTATE: %d,%d,%d,%d,%d\r\n",State.deletedmem,State.freemem,State.numdeleted,State.numobjects,State.totalmem);
    		adl_atSendResponse ( ADL_AT_UNS, RspStr);
    		adl_adInfo (firmgps_adCellHandle,info);
			wm_sprintf( RspStr, "\r\n+ADINFO: %d,%d\r\n",info -> size,info -> remaining);
    		adl_atSendResponse ( ADL_AT_UNS, RspStr);
    		adl_atSendResponse ( ADL_AT_UNS, "\r\nTRYING TO GET DATA\r\n");
    		GPS_data_Flash = (u8 * )info -> data;
    		for (i = 0; i < 100; i++)
			{
				wm_sprintf( RspStr, "+INFO_DATA[%d] = %s\r\n",i,(u8) GPS_data_Flash [i]);
				adl_atSendResponse ( ADL_AT_UNS, RspStr);
				//GPS_data_Flash++; 
			}
			adl_adUnsubscribe (firmgps_adCellHandle);
			break;
		case WIP_CEV_ERROR:
			// There was a socket error, closing connection
			wm_sprintf( RspStr, "\r\n+WIPHTTP: ERROR EN SOCKET");
    			adl_atSendResponse ( ADL_AT_UNS, RspStr);
			wip_close (http_channel);
			break;
	}
}

Can someone help me and tell me what I am making wrong?

Thanks a lot.

Raul Serrano

awneil · January 25, 2007, 2:07pm

It’s hard to read your code, as it’s lost its layout, and some has been misinterpreted as “smileys”

You need to use the ‘Code’ button to format the text as code & prevent “smileys” - and use the ‘Preview’ to check it.

See the forum User’s guide:
wavecom.com/modules/movie/sc … m.php?f=24

open_at_newby · January 25, 2007, 4:56pm

the first thing i noticed was :

firmwareGPS_Write = adl_memGet (102400);

to my knowledge the adl_memGet() api takes an ‘unsigned short’ (u16),
which can have a maximum value of 65535

Goodluck !

qtarant · January 25, 2007, 6:14pm

awneil, thanks for your recomendations. It was the first time I post some question.

I have edited my first post and I hope that my code would be more readable now.

openat_newby, I think that there is no problem in the memGet function, because I have read the ADL_User_Guide documentation and I got the definition for that function and it was:

void * adl_memGet (u32 size)

So I can request more that 65536 bytes, if I don’t reach the total available RAM memory. In fact, I requested more than 128Kb in one my first tests and my module reseted at that point everytime.

By the way, I didn’t mentioned that I am using a Q2686H module, firmware 6.61 and OpenAT 4.10

Thanks anyway.

Raul Serrano

qtarant · January 26, 2007, 5:54pm

Hi, everybody.

After some research and a lot of tests, I have solve my own problem.

The problem was the way I used the info->data pointer. You can not access its content through info->data[i] or *info->data, because that pointer points a place in the flash memory, not in RAM memory, so the solution is to copy the content to RAM memory, using wm_memcpy.

So, changing this code:

for (i = 0; i < 100; i++)
         {
            wm_sprintf( RspStr, "+INFO_DATA[%d] = %s\r\n",i,(u8) GPS_data_Flash [i]);
            adl_atSendResponse ( ADL_AT_UNS, RspStr);
            //GPS_data_Flash++;
         }

to

GPS_data_flash = adl_memGet (129);
GPS_data_flash2 = (u8 *)info -> data;
// We copy 128 bytes from flash memory to RAM.
wm_memcpy (GPS_data_flash,GPS_data_flash2,128);
GPS_data_flash [129] = '\0';
wm_sprintf( RspStr, "+INFO_DATA = %s\r\n",GPS_data_flash);
adl_atSendResponse ( ADL_AT_UNS, RspStr);

And you can move your copy of the info->data pointer (GPS_data_flash2) wherever you want. Don’t move the info->data pointer directly (for example doing info->data++) because the module resets.

I hope this solution helps somebody in the same or similar situation.

Raul Serrano.

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