Category: Miscellaneous

I found a bug in Waspmote API v0.15 when I was trying to set XBee link keys. The API failed to set the key as specified in the code. The bug lies in function gen_data()” in lines 4355-4403. Details below. However, it was corrected in v0.18.

/*
 Function: Generates the API frame to send to the XBee module
 Parameters:
 	data : The string that contains part ofthe API frame
 	param : The param to set
 Returns: Nothing
 Values: Stores in 'command' variable the API frame to send to the XBee module
*/
void WaspXBeeCore::gen_data(const char* data, uint8_t* param)
{
	uint8_t inc=0;
	uint8_t inc2=0;
		
	clearCommand();
	it=0;
	while(data[it] != '\0') {
		inc++;
		it++;
	}
	inc/=2;
	
	while(inc211) 
	{
		for(it=0;it<8;it++)
		{
			command[inc-9+it]=param[it];
		}
	}
	else if(inc==11)
	{
		for(it=0;it<3;it++)
		{
			command[inc-4+it]=param[it];
		}
	}
	else if(inc==10)
	{
		for(it=0;it<2;it++)
		{
			command[inc-3+it]=param[it];
		}
	}
	else command[inc-2]=param[0];
}

The function in v0.18 is as follows:

/*
 Function: Generates the API frame to send to the XBee module
 Parameters:
 	data : The string that contains part of the API frame
 	param : The param to set
 Returns: Nothing
 Values: Stores in 'command' variable the API frame to send to the XBee module
*/
void WaspXBeeCore::gen_data(const char* data, uint8_t* param)
{
    uint8_t    inc=0;
    uint8_t inc2=0;
		
    clearCommand();
    it=0;
    while(data[it] != '\0') {
        inc++;
        it++;
    }
    inc/=2;
	
    while(inc2

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