| ??? 05/18/06 18:51 Read: times |
#116551 - Hmmm... Responding to: ???'s previous message |
Right, only byte addresses ending in 0 or 8 are bit addressable. It just seemed a little confusing to me. Adding to my confusion was why the following wouldn't output to the correct LEDs:
... sbit P1_0 = 0x90 ^ 0; sbit P1_1 = 0x90 ^ 1; sbit P1_2 = 0x90 ^ 2; sbit P1_3 = 0x90 ^ 3; sbit P1_4 = 0x90 ^ 4; sbit P1_5 = 0x90 ^ 5; sbit P1_6 = 0x90 ^ 6; sbit P1_7 = 0x90 ^ 7; ... P1_1 = 1; P1_3 = 1; All eight of my LEDs continued to stay on and I figured it my be a problem with my understanding the SFR addresses. Then I realized that on reset the ports are set to 1. Doh. |
| Topic | Author | Date |
| SFR has thoroughly confused me... | 01/01/70 00:00 | |
| bits and bytes | 01/01/70 00:00 | |
| Hmmm... | 01/01/70 00:00 | |
| Always | 01/01/70 00:00 | |
| does thyis make sense | 01/01/70 00:00 | |
| Why? | 01/01/70 00:00 | |
| Yup. | 01/01/70 00:00 | |
of course it is | 01/01/70 00:00 | |
| sharpen them first | 01/01/70 00:00 | |
| Ah ha! | 01/01/70 00:00 | |
| paper and file | 01/01/70 00:00 | |
| The best of both | 01/01/70 00:00 |