Re: [beagleboard] DTS for keyboard Keys question

2015-05-20 Thread Bremenpl 
I have just tested the dts again. My configruation is a tact switch 
connecting the line to ground. The line is internally pulled up. When i 
used:

gpios = gpio3 9 0x0;
The letters apperead when i released the button, not when i pressed it. 
When i changed to:

gpios = gpio3 9 0x1;
The letters apperad on a button press. It seems like is the way around. 
1 means falling edge and 0 is rising edge. Is this correct?


W dniu 2015-05-19 o 16:12, Robert Nelson pisze:

On Tue, May 19, 2015 at 9:08 AM, Bremenpl breme...@gmail.com wrote:

This is 3.8+.
So is gpio2 = gpio3? Then in my case, if my button lines are internally
pulled up and the keys short them to gnd, should i use:
gpios = gpio3 9 0x0; ?

Correct

Regards,



--
Bremenpl

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[beagleboard] DTS for keyboard Keys question

2015-05-19 Thread bremenpl 
Hello there,
I am trying to create a dts file for an 8 buttons keyboard. The pins I am 
using are:
P8_35,
P8_36,
P8_39,
P8_40,
P8_41,
P8_42,
P8_43,
P8_44

HDMI is turned off. Using Dereks molloy book, I have found an example dts 
file for P9_15 key: https://pastebin.com/kKp3ji7s

There are 2 main parts for me:
pinctrl-single,pins = 
0x040 0x37 // P9_15 pull-up mode 7 GPIO1_16

This first one is quite straight forward for me, I have chnaged it to my 
needs:
pinctrl-single,pins = 
0x0d0 0x37 // P8_35 pull-up mode 7
0x0c8 0x37 // P8_36 pull-up mode 7
0x0b8 0x37 // P8_39 pull-up mode 7
0x0bc 0x37 // P8_40 pull-up mode 7
0x0b0 0x37 // P8_41 pull-up mode 7
0x0b4 0x37 // P8_42 pull-up mode 7
0x0a8 0x37 // P8_43 pull-up mode 7
0x0ac 0x37 // P8_44 pull-up mode 7

The problem is I dont know how to config this part:
 button_P9_15 {
debounce_interval = 50;
linux,code = 28;
label = button9_15;
gpios = gpio2 16 0x1;
gpio-key,wakeup;
autorepeat;

I dont know how to interpret gpios = gpio2 16 0x1;. I Think that 16 
0x1 stands for Gpio1[16], but I dont know what does gpio2 stands for. 
Please correct me if I am wrong. What would be the configuration for the 
P8_44 button? I tried gpios = gpio2 9 0x2; but that did not work. The 
overlay loaded but the button doesnt work. It is wired correctly though. I 
Would aprichiate all help. 

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Re: [beagleboard] DTS for keyboard Keys question

2015-05-19 Thread Robert Nelson 
On Tue, May 19, 2015 at 9:08 AM, Bremenpl breme...@gmail.com wrote:
 This is 3.8+.
 So is gpio2 = gpio3? Then in my case, if my button lines are internally
 pulled up and the keys short them to gnd, should i use:
 gpios = gpio3 9 0x0; ?

Correct

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] DTS for keyboard Keys question

2015-05-19 Thread Bremenpl 

Thank you, gonna test it asap.


On May 19, 2015 4:12:37 PM Robert Nelson robertcnel...@gmail.com wrote:


On Tue, May 19, 2015 at 9:08 AM, Bremenpl breme...@gmail.com wrote:
 This is 3.8+.
 So is gpio2 = gpio3? Then in my case, if my button lines are internally
 pulled up and the keys short them to gnd, should i use:
 gpios = gpio3 9 0x0; ?

Correct

Regards,

--
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] DTS for keyboard Keys question

2015-05-19 Thread Robert Nelson 
On Tue, May 19, 2015 at 8:51 AM, bremenpl breme...@gmail.com wrote:
 Hello there,
 I am trying to create a dts file for an 8 buttons keyboard. The pins I am
 using are:
 P8_35,
 P8_36,
 P8_39,
 P8_40,
 P8_41,
 P8_42,
 P8_43,
 P8_44

 HDMI is turned off. Using Dereks molloy book, I have found an example dts
 file for P9_15 key: https://pastebin.com/kKp3ji7s

 There are 2 main parts for me:
 pinctrl-single,pins = 
 0x040 0x37 // P9_15 pull-up mode 7 GPIO1_16

 This first one is quite straight forward for me, I have chnaged it to my
 needs:
 pinctrl-single,pins = 
 0x0d0 0x37 // P8_35 pull-up mode 7
 0x0c8 0x37 // P8_36 pull-up mode 7
 0x0b8 0x37 // P8_39 pull-up mode 7
 0x0bc 0x37 // P8_40 pull-up mode 7
 0x0b0 0x37 // P8_41 pull-up mode 7
 0x0b4 0x37 // P8_42 pull-up mode 7
 0x0a8 0x37 // P8_43 pull-up mode 7
 0x0ac 0x37 // P8_44 pull-up mode 7

 The problem is I dont know how to config this part:
  button_P9_15 {
 debounce_interval = 50;
 linux,code = 28;
 label = button9_15;
 gpios = gpio2 16 0x1;
 gpio-key,wakeup;
 autorepeat;

 I dont know how to interpret gpios = gpio2 16 0x1;. I Think that 16 0x1
 stands for Gpio1[16], but I dont know what does gpio2 stands for. Please
 correct me if I am wrong. What would be the configuration for the P8_44
 button? I tried gpios = gpio2 9 0x2; but that did not work. The overlay
 loaded but the button doesnt work. It is wired correctly though. I Would
 aprichiate all help.

Well, first is this v3.8.x or anything later?

In 3.8.x: Gpio1[16] = gpio2
while, in 3.14.x: Gpio1[16] = gpio1 ;)

So for 3.8.x: GPIO1[16]

gpios = gpio2 16 0x1;

gpio2 = GPIO1
16 = 16
0x1: GPIO_ACTIVE_HIGH (0x0 = GPIO_ACTIVE_LOW)

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] DTS for keyboard Keys question

2015-05-19 Thread Bremenpl 

This is 3.8+.
So is gpio2 = gpio3? Then in my case, if my button lines are internally 
pulled up and the keys short them to gnd, should i use:

gpios = gpio3 9 0x0; ?




On May 19, 2015 4:04:30 PM Robert Nelson robertcnel...@gmail.com wrote:


On Tue, May 19, 2015 at 8:51 AM, bremenpl breme...@gmail.com wrote:
 Hello there,
 I am trying to create a dts file for an 8 buttons keyboard. The pins I am
 using are:
 P8_35,
 P8_36,
 P8_39,
 P8_40,
 P8_41,
 P8_42,
 P8_43,
 P8_44

 HDMI is turned off. Using Dereks molloy book, I have found an example dts
 file for P9_15 key: https://pastebin.com/kKp3ji7s

 There are 2 main parts for me:
 pinctrl-single,pins = 
 0x040 0x37 // P9_15 pull-up mode 7 GPIO1_16

 This first one is quite straight forward for me, I have chnaged it to my
 needs:
 pinctrl-single,pins = 
 0x0d0 0x37 // P8_35 pull-up mode 7
 0x0c8 0x37 // P8_36 pull-up mode 7
 0x0b8 0x37 // P8_39 pull-up mode 7
 0x0bc 0x37 // P8_40 pull-up mode 7
 0x0b0 0x37 // P8_41 pull-up mode 7
 0x0b4 0x37 // P8_42 pull-up mode 7
 0x0a8 0x37 // P8_43 pull-up mode 7
 0x0ac 0x37 // P8_44 pull-up mode 7

 The problem is I dont know how to config this part:
  button_P9_15 {
 debounce_interval = 50;
 linux,code = 28;
 label = button9_15;
 gpios = gpio2 16 0x1;
 gpio-key,wakeup;
 autorepeat;

 I dont know how to interpret gpios = gpio2 16 0x1;. I Think that 16 0x1
 stands for Gpio1[16], but I dont know what does gpio2 stands for. Please
 correct me if I am wrong. What would be the configuration for the P8_44
 button? I tried gpios = gpio2 9 0x2; but that did not work. The overlay
 loaded but the button doesnt work. It is wired correctly though. I Would
 aprichiate all help.

Well, first is this v3.8.x or anything later?

In 3.8.x: Gpio1[16] = gpio2
while, in 3.14.x: Gpio1[16] = gpio1 ;)

So for 3.8.x: GPIO1[16]

gpios = gpio2 16 0x1;

gpio2 = GPIO1
16 = 16
0x1: GPIO_ACTIVE_HIGH (0x0 = GPIO_ACTIVE_LOW)

Regards,

--
Robert Nelson
https://rcn-ee.com/

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