Chiu: Difference between revisions

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Line 79: Line 79:
X
X
  FRAMEBUFFER=/dev/fb0 startx
  FRAMEBUFFER=/dev/fb0 startx
===== console output su lcd =====
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


==== tinydrm ====
==== tinydrm ====

Revision as of 01:48, 8 February 2020

un elaboratore tascabile

Hardware

Cpu

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

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

Tasti

  • Joystick U/D/L/R + Push
  • Sensore di movimento
  • Sensore di luce

uC supervisore

  • 11 input
  • SPI verso schermo
  • I2C verso scheda CPU

carica batteria

  • candidati: CN3065, STC4054, MCP73811, MCP73831/2

step-up

Software

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
console output su lcd

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

tinydrm

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

GUI

Applicazioni

Risparmio energetico

Idle

ARISC on board

Sleep