I'm currently using Eclipse to build and transfer software to an nxtOSEK robot. When trying to build a sample program, I get a few warnings and errors. Code: sample.c:90: warning: pointer targets in passing argument 1 of [ecrobot_set_bt_device_name] differ in signedness sample.c:225: error: implicit declaration of function [ecrobot_read_bt] sample.c:233: error: implicit declaration of function [ecrobot_send_bt] make: *** [build/sample.o] Error 1 My knowledge of programming is still very limited so I'm not really sure what to look for or add when I get these prompts. Anyways, the lines specified are as follows: Code: ecrobot_set_bt_device_name(DEVICE_NAME); and Code: char rx_buf[BT_MAX_RX_BUF_SIZE]; Also, what does the 90, 255 and 233 mean? I'm sure it's not the line number in the source code, because the char rx_buf part comes way before the other part. Any and all help appreciated. Also, if you need me to post more information, I'll do my best there.