| ??? 08/10/05 14:56 Read: times |
#99122 - wahts about the direction ? Responding to: ???'s previous message |
James Raymond said:
I am trying to get the counter on the 8051 to count external input signal pulses from two shaft ENCODERS. Please can you give more informations ? E.g. maximum pulse count per second. On most applications encoders can change the direction and thus a simple counter can not be used. Also typical encoders give two outputs with Gray code to determine the direction of movement. Then you can use T0 as a timer interrupt which scan all 4 inputs and count up or down registers in software depending from the direction of movement. With usig T0 at highest priority sampling rates of several 10kHz possible which was sufficient in most cases. Peter |
| Topic | Author | Date |
| using the COUNTER with the SERIAL | 01/01/70 00:00 | |
| I think your problem is that you are usi | 01/01/70 00:00 | |
| chip being used | 01/01/70 00:00 | |
| give a link | 01/01/70 00:00 | |
| wahts about the direction ? | 01/01/70 00:00 | |
| To Peter | 01/01/70 00:00 | |
| Change chip. | 01/01/70 00:00 | |
| Nope! I can't do that | 01/01/70 00:00 | |
| I do not know if micro can, but it would | 01/01/70 00:00 | |
| sorry | 01/01/70 00:00 | |
| How do you propose to (re)program this c | 01/01/70 00:00 | |
| use external interrupts | 01/01/70 00:00 | |
| DEEPEST APOLOGIES!!! | 01/01/70 00:00 | |
| Re DS5000 | 01/01/70 00:00 | |
| ds5000 | 01/01/70 00:00 | |
| Created a program! | 01/01/70 00:00 | |
| read up on UART modes in "the bible" | 01/01/70 00:00 | |
| A new idea! maybe the right one | 01/01/70 00:00 | |
| you are running out of timers | 01/01/70 00:00 | |
| using the COUNTER with the SERIAL port | 01/01/70 00:00 | |
| timer2 | 01/01/70 00:00 | |
| No timer 2 | 01/01/70 00:00 | |
| Your problem is that you need 3 counter/ | 01/01/70 00:00 | |
| erik | 01/01/70 00:00 | |
I think you have run into a mental block | 01/01/70 00:00 |