Guru
Joined: 06/08/2020
Location: United KingdomPosts: 449
| Posted: 04:36pm 12 May 2025 |
Mmmmm curious behaviour (most likely something I am doing)
Version 6.0001 -- plain old Mite via serial terminal. Fresh flash.
Testing with x4 leds, GP2-GP5
PORT(gp2,4) = &B1111 indeed turns on all 4 LEDS
PORT(gp2,4) = &B0000 does not turn the leds off
Reissuing PORT(gp2,4) = &B1111 turns off the LEDs.
It looks like setting a bit to "0" is not turning off, but setting to "1" toggles the state between 0 and 1 back to 0.
Print "Starting..."
Print "ALL on"
Port(gp2,4) = &B1111
Pause 1000
Print "All off"
Port(gp2,4) = &B0000 'Looks like it does nothing - ie LEDS still lit
Pause 1000
Print "Trying &B1111"
Port(gp2,4)=&B1111 'indeed turns off LEDS
Pause 1000
Therefore once the bit pattern is not all 1111's or all 0000's issuing PORT(GP2,4) = 1 << Rnd * 3 as per this thread only turns off leds once they recive a "1" ie turn off when already on.
This is most likely something I am doing...... any pointers...
Cheers
Edited 2025-05-13 02:42 by Nimue