stepper.lst

Embedded stepper motor programming itnerfacing code

                                              */                                                                            C:\MCC18\src\traditional\startup\c018i.c
                                             static short long prom;                                                        C:\MCC18\src\traditional\startup\c018i.c
                                             static unsigned short curr_byte;                                               C:\MCC18\src\traditional\startup\c018i.c
                                             static unsigned short curr_entry;                                              C:\MCC18\src\traditional\startup\c018i.c
                                             static short long data_ptr;                                                    C:\MCC18\src\traditional\startup\c018i.c
                                                                                                                            C:\MCC18\src\traditional\startup\c018i.c
000180   0e2a     MOVLW     0x2a             // Initialized data...                                                         C:\MCC18\src\traditional\startup\c018i.c
000182   6ef6     MOVWF     0xf6,0x0                                                                                        
000184   0e00     MOVLW     0x0                                                                                             
000186   6ef7     MOVWF     0xf7,0x0                                                                                        
000188   0e00     MOVLW     0x0                                                                                             
00018a   6ef8     MOVWF     0xf8,0x0                                                                                        
                                             TBLPTR = (short long)&_cinit;                                                  C:\MCC18\src\traditional\startup\c018i.c
00018c   0100     MOVLB     0x0              _asm                                                                           C:\MCC18\src\traditional\startup\c018i.c
00018e   0009     TBLRDPOSTINC                 movlb data_ptr                                                               C:\MCC18\src\traditional\startup\c018i.c
000190   50f5     MOVF      0xf5,0x0,0x0       tblrdpostinc                                                                 C:\MCC18\src\traditional\startup\c018i.c
000192   6f85     MOVWF     0x85,0x1           movf TABLAT, 0, 0                                                            C:\MCC18\src\traditional\startup\c018i.c
000194   0009     TBLRDPOSTINC                 movwf curr_entry, 1                                                          C:\MCC18\src\traditional\startup\c018i.c
000196   50f5     MOVF      0xf5,0x0,0x0       tblrdpostinc                                                                 C:\MCC18\src\traditional\startup\c018i.c
000198   6f86     MOVWF     0x86,0x1           movf TABLAT, 0, 0                                                            C:\MCC18\src\traditional\startup\c018i.c
                                               movwf curr_entry+1, 1                                                        C:\MCC18\src\traditional\startup\c018i.c
                                             _endasm                                                                        C:\MCC18\src\traditional\startup\c018i.c
                                               //while (curr_entry)                                                         C:\MCC18\src\traditional\startup\c018i.c
                                               //{                                                                          C:\MCC18\src\traditional\startup\c018i.c
                                               test:                                                                        C:\MCC18\src\traditional\startup\c018i.c
00019a   e103     BNZ       0x1a2              _asm                                                                         C:\MCC18\src\traditional\startup\c018i.c
00019c   6785     TSTFSZ    0x85,0x1            bnz 3                                                                       C:\MCC18\src\traditional\startup\c018i.c
00019e   d001     BRA       0x1a2              tstfsz curr_entry, 1                                                         C:\MCC18\src\traditional\startup\c018i.c
                                               bra 1                                                                        C:\MCC18\src\traditional\startup\c018i.c
0001a0   d03d     BRA       0x21c              _endasm                                                                      C:\MCC18\src\traditional\startup\c018i.c
                                               goto done;                                                                   C:\MCC18\src\traditional\startup\c018i.c
                                                 /* Count down so we only have to look up the data in _cinit                C:\MCC18\src\traditional\startup\c018i.c
                                                  * once.                                                                   C:\MCC18\src\traditional\startup\c018i.c
                                                  *                                                                         C:\MCC18\src\traditional\startup\c018i.c
                                                  * At this point we know that TBLPTR points to the top of the current      C:\MCC18\src\traditional\startup\c018i.c
                                                  * entry in _cinit, so we can just start reading the from, to, and         C:\MCC18\src\traditional\startup\c018i.c
                                                  * size values.                                                            C:\MCC18\src\traditional\startup\c018i.c
                                                  */                                                                        C:\MCC18\src\traditional\startup\c018i.c
                                                 _asm                                                                       C:\MCC18\src\traditional\startup\c018i.c
0001a2   0009     TBLRDPOSTINC             	/* read the source address */                                                   C:\MCC18\src\traditional\startup\c018i.c
0001a4   50f5     MOVF      0xf5,0x0,0x0   	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001a6   6f80     MOVWF     0x80,0x1       	movf TABLAT, 0, 0                                                               C:\MCC18\src\traditional\startup\c018i.c
0001a8   0009     TBLRDPOSTINC             	movwf prom, 1                                                                   C:\MCC18\src\traditional\startup\c018i.c
0001aa   50f5     MOVF      0xf5,0x0,0x0   	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001ac   6f81     MOVWF     0x81,0x1       	movf TABLAT, 0, 0                                                               C:\MCC18\src\traditional\startup\c018i.c
0001ae   0009     TBLRDPOSTINC             	movwf prom+1, 1                                                                 C:\MCC18\src\traditional\startup\c018i.c
0001b0   50f5     MOVF      0xf5,0x0,0x0   	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001b2   6f82     MOVWF     0x82,0x1       	movf TABLAT, 0, 0                                                               C:\MCC18\src\traditional\startup\c018i.c
                                           	movwf prom+2, 1                                                                 C:\MCC18\src\traditional\startup\c018i.c
0001b4   0009     TBLRDPOSTINC             	/* skip a byte since it's stored as a 32bit int */                              C:\MCC18\src\traditional\startup\c018i.c
                                           	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001b6   0009     TBLRDPOSTINC             	/* read the destination address directly into FSR0 */                           C:\MCC18\src\traditional\startup\c018i.c
0001b8   50f5     MOVF      0xf5,0x0,0x0   	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001ba   6ee9     MOVWF     0xe9,0x0       	movf TABLAT, 0, 0                                                               C:\MCC18\src\traditional\startup\c018i.c
0001bc   0009     TBLRDPOSTINC             	movwf FSR0L, 0                                                                  C:\MCC18\src\traditional\startup\c018i.c
0001be   50f5     MOVF      0xf5,0x0,0x0   	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001c0   6eea     MOVWF     0xea,0x0       	movf TABLAT, 0, 0                                                               C:\MCC18\src\traditional\startup\c018i.c
                                           	movwf FSR0H, 0                                                                  C:\MCC18\src\traditional\startup\c018i.c
0001c2   0009     TBLRDPOSTINC             	/* skip two bytes since it's stored as a 32bit int */                           C:\MCC18\src\traditional\startup\c018i.c
0001c4   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
                                           	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001c6   0009     TBLRDPOSTINC             	/* read the destination address directly into FSR0 */                           C:\MCC18\src\traditional\startup\c018i.c
0001c8   50f5     MOVF      0xf5,0x0,0x0   	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001ca   6f83     MOVWF     0x83,0x1       	movf TABLAT, 0, 0                                                               C:\MCC18\src\traditional\startup\c018i.c
0001cc   0009     TBLRDPOSTINC             	movwf curr_byte, 1                                                              C:\MCC18\src\traditional\startup\c018i.c
0001ce   50f5     MOVF      0xf5,0x0,0x0   	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
0001d0   6f84     MOVWF     0x84,0x1       	movf TABLAT, 0, 0                                                               C:\MCC18\src\traditional\startup\c018i.c
                                           	movwf curr_byte+1, 1                                                            C:\MCC18\src\traditional\startup\c018i.c
0001d2   0009     TBLRDPOSTINC             	/* skip two bytes since it's stored as a 32bit int */                           C:\MCC18\src\traditional\startup\c018i.c
0001d4   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
                                           	tblrdpostinc                                                                    C:\MCC18\src\traditional\startup\c018i.c
                                                 _endasm                                                                    C:\MCC18\src\traditional\startup\c018i.c
                                                 //prom = data_ptr->from;                                                   C:\MCC18\src\traditional\startup\c018i.c
                                                 //FSR0 = data_ptr->to;                                                     C:\MCC18\src\traditional\startup\c018i.c
                                                 //curr_byte = (unsigned short) data_ptr->size;                             C:\MCC18\src\traditional\startup\c018i.c
                                                 /* the table pointer now points to the next entry. Save it                 C:\MCC18\src\traditional\startup\c018i.c
                                                  * off since we'll be using the table pointer to do the copying            C:\MCC18\src\traditional\startup\c018i.c
                                                  * for the entry.                                                          C:\MCC18\src\traditional\startup\c018i.c
0001d6   cff6     MOVFF     0xff6,0x87            */                                                                        C:\MCC18\src\traditional\startup\c018i.c
0001d8   f087                                                                                                               
0001da   cff7     MOVFF     0xff7,0x88                                                                                      
0001dc   f088                                                                                                               
0001de   cff8     MOVFF     0xff8,0x89                                                                                      
0001e0   f089                                                                                                               
                                                 data_ptr = TBLPTR;                                                         C:\MCC18\src\traditional\startup\c018i.c
                                                                                                                            C:\MCC18\src\traditional\startup\c018i.c
0001e2   c080     MOVFF     0x80,0xff6           /* now assign the source address to the table pointer */                   C:\MCC18\src\traditional\startup\c018i.c
0001e4   fff6                                                                                                               
0001e6   c081     MOVFF     0x81,0xff7                                                                                      
0001e8   fff7