- Fri Dec 05, 2014 5:48 am
#4040
if you can use the gpio as sink driver for led, then you can take away the caps.
- Fri Dec 05, 2014 9:23 am
#4054
Yes, it works right in my config. Just connect led to '+' bus and any GPIO.
Output value=0 to that pin will light the led.
villTech wrote:if you can use the gpio as sink driver for led, then you can take away the caps.
Yes, it works right in my config. Just connect led to '+' bus and any GPIO.
Output value=0 to that pin will light the led.
- Fri Dec 05, 2014 2:46 pm
#4068
Well, its not so simple:
Port can be describbed as input or output.
Setting high level on pin configured as input means pull-up.
Setting high level on pin configured sa output means high level and can drive LED.
On the boot GPIO's are configured as inputs.
To drive LED's GPIO's are configured as outputs.
So, if You prepare schematic straight for drive LED's You can have problems to proper reboot chip.
If You play with GPIO good option with capacitors is to set GPIO2 as input an pullup before (expecting) reset chip
if you can use the gpio as sink driver for led, then you can take away the caps.
Well, its not so simple:
Port can be describbed as input or output.
Setting high level on pin configured as input means pull-up.
Setting high level on pin configured sa output means high level and can drive LED.
On the boot GPIO's are configured as inputs.
To drive LED's GPIO's are configured as outputs.
So, if You prepare schematic straight for drive LED's You can have problems to proper reboot chip.
If You play with GPIO good option with capacitors is to set GPIO2 as input an pullup before (expecting) reset chip
- Fri Dec 05, 2014 3:43 pm
#4076
i think you should !rst instead of +3v3. then reset (if long enough) would work too.
