Setting up TFTP client using MQX 4.1

andrell24 · ‎03-20-2015

Hello everyone,

I am working on setting up my embedded program as a TFTP client using MQX 4.1 to download a file from a TFTP server

but have not succeeded yet. Below is my code snippet:

#define ENET_DEVICE BSP_DEFAULT_ENET_DEVICE

#define ENET_IPADDR IPADDR(192,168,55,128)

#define MAX_HOSTNAMESIZE 64

void setupTFTPclientAndDownloadFileFromServer()

{

_ip_address hostaddr;

char hostname[MAX_HOSTNAMESIZE];

uint_32 tftp_handle, buffer_size;

uchar_ptr buffer_ptr;

TFTP_DATA_STRUCT tftp_data;

boolean error = FALSE, error2;

int_32 return_code = 0;

int_32 i=0,address;

boolean next_trans = TRUE;

_enet_address enet_address;

error2 = RTCS_create();

if (error2 != RTCS_OK){

printf("\nRTCS failed to initialize, error2 = %X", error2);

_task_block();

}

//Enable IP forwarding

_IP_forward = TRUE;

ENET_get_mac_address(ENET_DEVICE, ENET_IPADDR, enet_address);

RTCS_resolve_ip_address("192.168.55.134", &hostaddr, hostname, MAX_HOSTNAMESIZE);

if (!hostaddr) {

printf("Unable to resolve host.\n");

return;

}

tftp_data.SERVER = hostaddr;

tftp_data.FILENAME = "C:\\sampleFile.bin";

tftp_data.FILEMODE = "octet";

printf("\nDownloading file %s from TFTP server: %s [%ld.%ld.%ld.%ld]\n",

tftp_data.FILENAME, hostname, IPBYTES(hostaddr));

tftp_handle = (*FT_TFTP->OPEN)((pointer) &tftp_data);

if (tftp_handle != RTCS_OK) {

printf("\nError opening file %s\n", tftp_data.FILENAME); //******THIS IS WHERE THE COMPILER ENDS UP

}

else {

printf("\Success opening file %s\n", tftp_data.FILENAME);

while (!(*FT_TFTP->EOFT)()) {

next_trans = TRUE;

while(1) {

//Read TFTP

buffer_ptr = (*FT_TFTP->READ)( &buffer_size );

if((NULL == buffer_ptr)||(TFTP_DATA_SIZE != buffer_size)) {

next_trans = FALSE;

}

switch (buffer_size) {

case (RTCSERR_TFTP_TIMEOUT):

printf("\nTFTP timeout\n");

error = TRUE;

break;

case (RTCSERR_TFTP_ERROR + 1):

printf("\nFile %s not found\n", tftp_data.FILENAME);

error = TRUE;

break;

case (RTCSERR_TFTP_ERROR + 2):

printf("\nAccess violation\n");

error = TRUE;

break;

case (RTCSERR_TFTP_ERROR + 3):

printf("\nDisk full or allocation exceeded\n");

error = TRUE;

break;

case (RTCSERR_TFTP_ERROR + 4):

printf("\nIllegal TFTP operation\n");

error = TRUE;

break;

case (RTCSERR_TFTP_ERROR + 5):

printf("\nUnknown transfer ID\n");

error = TRUE;

break;

case (RTCSERR_TFTP_ERROR + 6):

printf("\nFile already exists\n");

error = TRUE;

break;

case (RTCSERR_TFTP_ERROR + 7):

printf("\nNo such user\n");

error = TRUE;

break;

default:

break;

} //Endswitch

//Transaction finished

if((NULL == buffer_ptr)||(TFTP_DATA_SIZE != buffer_size)) {

return_code = (*FT_TFTP->CLOSE)();

fclose(flash_hdl);

}

} //End Read TFTP

break;

}

return_code = (*FT_TFTP->CLOSE)();

}

I am not being able to get an RTCS_OK return value after calling this method (*FT_TFTP->OPEN)((pointer) &tftp_data) so it does not go to

the downloading process.

Please have a look at my code and advice what should be corrected. Thank you very much.

Best Regards,

Darrell

RadekS · ‎03-26-2015

Hi Darrell,

currently I do not see anything really wrong in your code. But I am just not sure with source file name tftp_data.FILENAME = "C:\\sampleFile.bin"; Shouldn't be there just one back slash? "C:\sampleFile.bin".

Of course, it depends on your ftp server, but it rather looks like typo from my point of view.

I hope it helps you.

Have a great day,
RadekS

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