Difference between revisions of "Chiu"

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(carica batteria)
(CHX)
Line 66: Line 66:
 
** 1 - sensore movimento
 
** 1 - sensore movimento
 
** 2 - leds
 
** 2 - leds
 +
* LDO [LD2985 https://www.st.com/en/power-management/ld2985.html]
  
 
==== carica batteria ====
 
==== carica batteria ====

Revision as of 18:35, 13 February 2020

un elaboratore tascabile

Hardware

Cpu

OPiPinout.jpg
Orange-Pi-Zero-Pinout.jpg

altre board

Display

  • Risoluzione: 320x240 ILI9341 (40x30)
  • Risoluzione: 480x320 ILI9486
  • Bus: SPI
ili9341 OPi Note GPIO
SCK 23 SCLK 14
MOSI 19 15
CS 24 CS0 13
RST 5 11
DC 3 12
LED 18 need check 18
VCC 1 3.3v
GND 6 GND

CHX

Scheda che implementa: caricabatteria, stepup, tastiera, led

uC supervisore

carica batteria

step-up

Software

Seriale (via usb gadget)

una volta flashato e acceso, il device esporra' una seriale via usb gadget, ES:

/dev/ttyACM0

per collegarsi:

screen /dev/ttyACM0 115200 8n1

Display

fbtft_device (kernel <5.4)

in /boot/armbianEnv.txt:

overlays=usbhost2 usbhost3 spi-spidev
param_spidev_spi_bus=1

in /etc/modprobe.d/fbtft.conf:

options fbtft_device custom name=fb_ili9341 gpios=dc:12,reset:11,led:18 speed=1600000 fps=5 busnum=1 bgr=1 rotate=90

X

FRAMEBUFFER=/dev/fb0 startx

trovare il proprio device /dev/fbX

verificare che device ci sono sotto /dev/fb*:

root@orangepizeroplus2:~# ll /dev/fb*
crw-rw---- 1 root video     29, 0 Feb  8 01:15 /dev/fb0
crw-rw---- 1 root video     29, 1 Feb  8 01:15 /dev/fb1

quindi lanciare il modprobe:

modprobe fbtft_device custom name=fb_ili9341 gpios=dc:12,reset:11,led:18 speed=1600000 fps=5 busnum=1 bgr=1 rotate=90

e verificare il nuovo device:

root@orangepizeroplus2:~# ll /dev/fb*
crw-rw---- 1 root video     29, 0 Feb  8 01:15 /dev/fb0
crw-rw---- 1 root video     29, 1 Feb  8 01:15 /dev/fb1
-rw-r--r-- 1 root root  101056512 Feb  8 01:50 /dev/fb2

nel nostro caso e' il

/dev/fb2

cambiare font e dimensione del display

source: https://learn.watterott.com/hats/rpi-display/faq/

eseguire con permessi di super-user:

dpkg-reconfigure console-setup

quindi seguire i passaggi:

  • Encoding to use on the console: <UTF-8>
  • Character set to support: <Guess optimal character set>
  • Font for the console: Terminus (default is VGA)
  • Font size: 6x12 (framebuffer only)

e riavviare

test del display

una volta che a mano viene lanciato

modprobe fbtft_device custom name=fb_ili9341 gpios=dc:12,reset:11,led:18 speed=1600000 fps=5 busnum=1 bgr=1 rotate=90

il display dovrebbe diventare bianco e poi per righe di pixel, nero. quindi e' possibile lanciare:

cat /dev/urandom > /dev/fb2

che creera' una schermata con pixel di diversi colori (random)

console output su lcd dal boot

source: https://kaspars.net/blog/spi-display-orange-pi-zero

in /etc/modules-load.d/fbtft.conf:

fbtft_device

in /etc/modprobe.d/fbtft.conf:

options fbtft_device custom name=fb_ili9341 gpios=dc:12,reset:11,led:18 speed=1600000 fps=5 busnum=1 bgr=1 rotate=90

in /boot/armbianEnv.txt add:

extraargs="fbcon=map:2"

dove "2" e' il tuo /dev/fbX (vedi "trovare il proprio device..")

tinydrm

https://github.com/torvalds/linux/tree/master/drivers/gpu/drm/tiny

aptitude install linux-headers-next-sunxi

in myili9341.dts:

/dts-v1/;
/plugin/;
 
/ {
    compatible = "allwinner,sun8i-h3";
 
    fragment@0 {
        target-path = "/aliases";
        __overlay__ {
            spi1 = "/soc/spi@01c69000";
        };
    };
 
    fragment@1 {
        target = <&spi1>;
        __overlay__ {
            status = "okay";
 
            spidev {
                compatible = "spidev";
                reg = <0>;
                spi-max-frequency = <50000000>;
            };
        };
    };

    fragment@2 {
	target = <&spi1>;
	__overlay__ {
		#address-cells = <1>;
		#size-cells = <0>;
		status = "okay";
		pinctrl-names = "default";
			pinctrl-0 = <&bb_spi1_pins>;

			display@0{
			status = "okay";
			compatible = "ilitek,ili9341";
			reg = <0>;
			spi-max-frequency = <32000000>;
			dc-gpios    = <&gpio 12 0>;   // lcd dc
			reset-gpios = <&gpio 11 0>;   // lcd reset
			// backlight = <&backlight_gpio>; // lcd lite
			// backlight = <&backlight_pwm>;    // lcd lite
			// rotation = <180>;
			};
		};
	};
};

armbian-add-overlay myili9431.dts

GUI

Applicazioni

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Risparmio energetico

Idle

ARISC on board

Sleep