hello guys, need make display work. tried still nothing.
this display model
http://www.ebay.com/itm/2-2-inch-2-2-spi-tft-lcd-display-module-240x320-ili9341-51-avr-stm32-arm-pic-/200939222521
i'm using arduino uno r3, library tftv2 (ili9341).
this configuration:
miso -not connected
led -20 ohms direct 3.3v
ls sck -pin 13
ls mosi -pin 11
ls d/c -pin 6
ls reset -pin 4
ls cs -pin 5
gnd -gnd
vcc -3.3v
(ls: level shift 560, 1k ohms)
if it's white screen, if closer side can see senseless colored lines, colors used in example i'm testing (drawcircle).
what's reason of behavior?
i used cd4050be same result
here's video i've uploaded
https://www.youtube.com/watch?v=_psfidxopns
this display model
http://www.ebay.com/itm/2-2-inch-2-2-spi-tft-lcd-display-module-240x320-ili9341-51-avr-stm32-arm-pic-/200939222521
i'm using arduino uno r3, library tftv2 (ili9341).
this configuration:
miso -not connected
led -20 ohms direct 3.3v
ls sck -pin 13
ls mosi -pin 11
ls d/c -pin 6
ls reset -pin 4
ls cs -pin 5
gnd -gnd
vcc -3.3v
(ls: level shift 560, 1k ohms)
if it's white screen, if closer side can see senseless colored lines, colors used in example i'm testing (drawcircle).
what's reason of behavior?
i used cd4050be same result
here's video i've uploaded
https://www.youtube.com/watch?v=_psfidxopns
you should have like
if don't, there number of examples use or similar. op, run 1 of sketches identify chip , make sure describes 1 supposed there. 1 in 4 displays bought broken , wouldn't return right value no matter did. others, have trouble finding the identifier if there secondary problem pins defined functions.
there's lot of different manufacturers produce chips similar capabilities different commands , memory layouts. seems ebay sellers pretty loose in how describe , support devices. wouldn't believe had ili9341 chip until saw identified such above code snippet.
code: [select]
void setup(void) {
serial.begin(9600);
serial.println(f("tft lcd test"));
tft.reset();
uint16_t identifier = tft.readid();
serial.print(f("lcd driver chip: "));
serial.println(identifier, hex);
if don't, there number of examples use or similar. op, run 1 of sketches identify chip , make sure describes 1 supposed there. 1 in 4 displays bought broken , wouldn't return right value no matter did. others, have trouble finding the identifier if there secondary problem pins defined functions.
there's lot of different manufacturers produce chips similar capabilities different commands , memory layouts. seems ebay sellers pretty loose in how describe , support devices. wouldn't believe had ili9341 chip until saw identified such above code snippet.
Arduino Forum > Using Arduino > Displays > 2.2 TFT SPI 240x320 white screen
arduino
Comments
Post a Comment