| ??? 03/31/09 01:35 Modified: 03/31/09 01:38 Read: times |
#164033 - Well done! Responding to: ???'s previous message |
Chico said:
Kai, there arent close enough value... its just the perfect value... luckly! Well done! Chico said:
Some web pages says DMX have 2 start bits (or a start bit with 8mS) other says just one start bit (4 mS)
Two stop bits, would be really good if just waiting 4 mS after sending a byte solves. I know only of one startbit (4µsec) and two stop bits (each 4µsec). The Mark between RESET and START BYTE can be different, though: 8µsec (DMX-512 standard of 1986) and 4µsec (DMX-512 standard of 1990). All DMX devices must be able to detect the 8µsec Mark. Devices which can also detect the 4µsec Mark may be labelled "DMX-512/1990". Chico said:
Also, please, if someone could answer this, would be very instructive for me:
I never worked with dual baud rates, and duplex mode, how should I make the ISR routine? When should I clear TI and RI? In example, will have an interruption for TI while a RI interruption is running? Have a look at these code examples. They are very instructive and can answer some of your questions. http://www.8052.com/forum/read/163808 Good luck! Kai |
