| ??? 05/21/04 12:20 Read: times |
#70817 - use pointers Responding to: ???'s previous message |
Hi
There pointers in C and pointers point to some memory location. Usually ports also occupy 1 byte or two byte memory location. you can point a pointer in C to the memory location and get access the data. Have a look on Keil and its .h header file which contains constants to memory locations of Ports. So in C when i need to read the port 2 of 8051 then i just execute the statement int z; z = P1; where P1 points to the port 2 of 8051 Shahzad Aslam |
| Topic | Author | Date |
| How can I do MOVX in C? | 01/01/70 00:00 | |
| RE: How can I do MOVX in C? | 01/01/70 00:00 | |
| RE: How can I do MOVX in C? | 01/01/70 00:00 | |
| use pointers | 01/01/70 00:00 | |
| RE: use pointers - VERY CAREFULLY! | 01/01/70 00:00 | |
| RE: use pointers | 01/01/70 00:00 | |
| RE: use pointers | 01/01/70 00:00 | |
| It all depends on the compiler... | 01/01/70 00:00 | |
| RE: How can I do MOVX in C? | 01/01/70 00:00 | |
| RE: How can I do MOVX in C? | 01/01/70 00:00 | |
| What C? | 01/01/70 00:00 | |
| RE: How can I do MOVX in C? | 01/01/70 00:00 | |
| RE: How can I do MOVX in C? | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| RE: Keil | 01/01/70 00:00 | |
RE: How can I do MOVX in C? | 01/01/70 00:00 |