@Maximilian-Gerhardt yes you are right, the "fps" is limited with the spi bus speed, and that is at max 100, in the memory it works same speed with the cpu's that one is the 387 for 150Kbytes 16bit embedded bmp. It can't be showing but it is there. In the future if there is much faster spi speed then we can use these rates.
fill screen function, after first line just memcpy()
void
fillScreen ( struct fb_info *fb_info, unsigned int color )
{
//~ for ( int i=0; i <= fb_info -> screensize; i++ )
//~ putPixelDirectToLocation( fb_info, i, color );
for ( int i=0; i < fb_info -> var.xres; i++ )
{
putPixel( fb_info, i, 0, color );
}
for ( int i=1; i < fb_info -> var.yres; i++ )
{
memcpy( fb_info -> ptr + ( fb_info -> fix.line_length * i ),
fb_info -> ptr,
( fb_info -> var.xres * ( fb_info -> var.bits_per_pixel / 8 ) ) );
}
/***********/
//~ for ( int i = 0; i < fb_info -> var.yres; i++)
//~ {
//~ drawHorizontalLine ( fb_info, 0, i, (unsigned int)fb_info -> var.xres, color );
//~ }
}
this is the embedded bmp push code
for (int i=0; i<1000; i++)
{
/* memcpy() bmp show */
memcpy( fb_info.ptr, &logo_bmp[0], logo_bmp_len );
}
and this is the simple test code
date nanoseconds enabled from menuconfig "%N" and bc installed
#!/usr/bin/env sh
count=1000
first=$(date +"%s.%N")
echo -e "started\t"$first
#for i in `seq $count`; do ./fb-test; done;
./fb-test
last=$(date +"%s.%N")
echo -e "ended\t"$last
echo $(echo "$count/($last-$first)" | bc)" fps"
Last one the built in debug, i think it has some kind of bug or it is not an optimized code ( ~3000Kb * ~5 = ~15.000 Kb ) i think this is the equation:
when you use debug=$((1<<5)) it shows, (~ 3000Kb) * ( ~5 )
or
echo -e $((1<<5)) > /sys/class/graphics/fb0/debug
then, for cancle
echo -e 0 > /sys/class/graphics/fb0/debug
Extras
I wrote something similar Adafruit_GFX, it capable of draw lines, draw triangles, draw squares, draw circles, push 16bit bmps ... but the code has a lots of issue, there is a long way to go for stable. When i clean things up I will push the code to gitlab.
if you compile modules builtin, below script activates the display in 10 seconds or so when power up the omega2, i am trying to activate with uboot but no luck for now.
display init script init.d
#!/bin/sh /etc/rc.common
START=01
STOP=99
DEFAULT_ROTATION=3
ROTATE_ANGLE=270
EXTRA_COMMANDS="rotate"
EXTRA_HELP="
rotate Change the display direction to one of the [0 1 2 3] values 0:0, 1:90, 2:180, 3:270
"
start() {
insmod fbtft_device custom name="fb_ili9341" busnum=32766 cs=1 speed=96666000 mode=3 fps=100 txbuflen=3145728 buswidth=8 bgr=1 gpios=reset:2,dc:3 width=240 height=320 verbose=0 rotate=$ROTATE_ANGLE debug=0
}
stop() {
rmmod fbtft_device
}
rotate() {
if [ ! -z $1 ]; then
stop
if [ $1 -eq 0 ]; then
ROTATE_ANGLE=0
echo "$1 0"
elif [ $1 -eq 1 ]; then
ROTATE_ANGLE=90
echo "$1 90"
elif [ $1 -eq 2 ]; then
ROTATE_ANGLE=180
echo "$1 180"
elif [ $1 -eq 3 ]; then
ROTATE_ANGLE=270
echo "$1 270"
else
ROTATE_ANGLE=270
echo "$1 270"
fi
start
fi
}
boot() {
start
}
