Tsev > Xov xwm > Ntsiab lus

CMD_CSKETCH - Caj Cuam Kaub Tawm Skis

Apr 27, 2019

Qhov kev hais no muaj qhov kev ua haujlwm tib yam nkaus li CMD_SKETCH tsuas yog nws ua tiav

optimization rau lub vaj huam sib luag ntawm daim npav capacitive. Vim hais tias daim phiajcim capacitive panels tau qis dua

sampling frequencies (ze 100Hz) los tshaj tawm txog cov hauj lwm, qhov kev ua haujlwm kos duab

hloov tshiab nquag piv rau kev kov tsis taus. CMD_CSKETCH qhia txog ib txoj kab

interpolation algorithm los muab ib txoj kev nyuab siab thaum kos cov kab tawm tso tawm.

Thov nco ntsoov cov lus qhia no tsis muaj feem xyuam rau FT800 silicon.

C daim ntawv prototype

tsis muaj dabtsis cmd_csketch (int16_t x,

int16_t y,

uint16_t w,

uint16_t h,

uint32_t ptr,

uint16_t hom ntawv,

uint16_t freq);

image

Cov lus qhia

x

x-coordinate ntawm kos duab sab saum toj-sab laug, hauv pixels

y

y-coordinate ntawm kos duab sab saum toj-sab laug, hauv pixels

w

Dav ntawm thaj chaw sketch, hauv pixels

h

Qhov siab tshaj plaws ntawm kev kos duab, hauv pixels

ptr

Luag qhov chaw nyob ntawm kev kos duab

hom ntawv

Cov qauv ntawm kev kos duab bitmap, L1 lossis L8

freq

Lub sij hawm oversampling. Qhov raug ntaus nqi yog 1500 kom paub meej

kab txuas nrog smoothly. Tus nqi xoom txhais tau hais tias tsis muaj kev ntsuam xyuas

kev lag luam.

Kev piav qhia

Qhov kev hais no tsuas yog siv tau rau FT801 silicon. FT801 co-processor yuav oversample

cov hauj lwm sib tham los ntawm lub vaj huam sib luag kov tau hauv feem ntau ntawm 'freq' thiab

tsim cov kab nrog cov nyhuv nyhav.

Piv txwv

Xyuas cov piv txwv CMD_SKETCH