Technical Support Information - Kannad PROV-CARBON Manuel Utilisateur

USER MANUAL / MANUEL UTILISATEUR
The actual message sent from an Iridium modem is in an attachment of the e-mail and the subject line
contains the IMEI number of the unit that sent the SBD message.
Example Formula to Calculate Checksum for SBDWB
Since the calculation of the checksum for SBDWB may be confusing, a C code example is given below.
Please see +SBDWB in the AT Command Reference for additional information.
unsigned int16 checksum = 0; /*Unsigned 16 bit integer*/
int i;
unsigned char c;
char* data = "Test SBD message";
int length = 16; /* Number of characters in data */
for (i=0;i<length;i++) {
c = data[i];
putch(c);
checksum += c;
}
//Print out the 2 byte checksum
putch(checksum/256);
putch(checksum%256);
PROV-CARBON

TECHNICAL SUPPORT INFORMATION

For technical support, please contact us at:
Phone: 703-392-1136 x200 or
E-mail: contact@nalresearch.com
PAGE : 34 / 70
DATE : 20/12/2007
INDEX : A
REF. : DOC07220