Ability to change BGR / RGB method (for some AliExpress INITR_GREENTAB models) #154
Description
Hello,
I bought the following screen on AliExpress (but can be found anywhere nowadays) :
Seems like the RGB coding that this screen expects is ST77XX_MADCTL_RGB instead of ST7735_MADCTL_BGR
Initializing it with BLACKTAB works for color but gets bottom and right edges wrong.
Initializing it with GREENTAB works for edges but not for colors
Seems like people are referring to these screens as YELLOWTAB ... anyway these ones seem to be a little bit annoying to use.
In order to solve out the problem I had to modify the library file "Adafruit_ST7735.cpp" and change these lines :
...
switch (rotation) {
case 0:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST77XX_MADCTL_RGB;
} else {
// madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST7735_MADCTL_BGR;
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST77XX_MADCTL_RGB;
}
...
case 1:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
} else {
// madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR;
madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
}
...
case 2:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_RGB;
} else {
// madctl = ST7735_MADCTL_BGR;
madctl = ST77XX_MADCTL_RGB;
}
...
case 3:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
} else {
// madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR;
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
...