| ??? 02/07/05 10:59 Read: times |
#86739 - I am sure it is good way for you! Responding to: ???'s previous message |
Kurnia Brahmana said:
Hi for all,
Suppose we arrived at a statement: JNB P1.0,$ And we would like to escape from that situation after a number of time if there is no any trigger. I write this program for ultrasonic range meter and it works properly. see recieve_pulse: mov tmod,#1 mov th0,#0 mov tl0,#0 mov r3,#20 setb p1.0 setb tr0 loop: jnb p1.0,loop1 sjmp exit_loop loop1: jnb tf0,loop clr tf0 djnz r3,loop exit_loop: ret therefore you can load th0,tl0 and r3 for special time delay and maximum time is 16.71 seconds with 12 mhz xtal |
| Topic | Author | Date |
| How to escape from an endless loop ? | 01/01/70 00:00 | |
| what is the problem? | 01/01/70 00:00 | |
| Counter | 01/01/70 00:00 | |
| How about another BIT flag | 01/01/70 00:00 | |
| how would you do that | 01/01/70 00:00 | |
| Problem Solved with a combination. | 01/01/70 00:00 | |
| External interrupt | 01/01/70 00:00 | |
| Additional explanation about the problem | 01/01/70 00:00 | |
| loops | 01/01/70 00:00 | |
| Not in the ISR | 01/01/70 00:00 | |
| Answer t o additional explanation | 01/01/70 00:00 | |
| Messing with stack inside interrupt... | 01/01/70 00:00 | |
| Setup stack inside interrupt | 01/01/70 00:00 | |
| I am sure it is good way for you! | 01/01/70 00:00 | |
Your idea is good. | 01/01/70 00:00 |