| ??? 04/22/07 15:39 Read: times |
#137764 - search found Responding to: ???'s previous message |
Dear all,
I found by goooooogle about circuit for reading floating probe for my project. here is my circuit:  and here is my program: ;----------------------------- LED_H BIT P1.7 LED_L BIT P1.6 FLOAT BIT P3.5 PROBE BIT P3.4 FLOAT_B BIT 00H INIT: SETB PROBE SETB FLOAT SETB LED_H SETB LED_L CLR FLOAT_B LOOP: LCALL FLOAT_CHK JB FLOAT_B,LOOP JNB PROBE,LOGIC_1 CLR LED_L SETB LED_H LJMP LOOP LOGIC_1: CLR LED_H SETB LED_L LJMP LOOP FLOAT_CHK: SETB FLOAT LCALL DELAY JB PROBE,NOT_FLOAT CLR FLOAT LCALL DELAY JNB PROBE,NOT_FLOAT SETB FLOAT_B SETB LED_H SETB LED_L RET NOT_FLOAT: CLR FLOAT_B CLR FLOAT RET DELAY: MOV R1,#2 LD1: MOV R2,#10 LD2: MOV R3,#10 DJNZ R3,$ DJNZ R2,LD2 DJNZ R1,LD1 RET ;----------------------------- please give correction if any. thank and regard hendry |
| Topic | Author | Date |
| tri state input reading | 01/01/70 00:00 | |
| tri-state | 01/01/70 00:00 | |
| Reading TriState | 01/01/70 00:00 | |
| Hi-Z reading | 01/01/70 00:00 | |
| Logic Probe Concept | 01/01/70 00:00 | |
| Window Comparator | 01/01/70 00:00 | |
| Build Or Buy | 01/01/70 00:00 | |
| Using Analogue Methods to test for Hi-Z | 01/01/70 00:00 | |
| Spare ADC and DAC on your micro? | 01/01/70 00:00 | |
| search found | 01/01/70 00:00 | |
| Some mistake | 01/01/70 00:00 | |
| 100k resistor | 01/01/70 00:00 | |
| An idea... | 01/01/70 00:00 | |
| Fundamental Logic and Hi-Z impedance | 01/01/70 00:00 | |
| Some thoughts on the tristate detection | 01/01/70 00:00 | |
| not 'the first', but THE problem | 01/01/70 00:00 | |
| Heisenberg | 01/01/70 00:00 | |
agreed | 01/01/70 00:00 | |
| thank you | 01/01/70 00:00 |