Hallo Fred,
in cam.c folgenden Code verwenden.
//Empfang eines Zeichens
ISR (CAM_USART_RX)
{
cli();
unsigned char tmp = CAM_UDR;
if(cmd_buffercounter < CMD_BUFFER_SIZE) cam_cmd_buffer[cmd_buffercounter] = tmp;
if(cmd_buffercounter >= cam_dat_start && cmd_buffercounter < cam_dat_stop) cam_dat ...