Blank Display with Beaglebone, LCD7 Cape and TI_Android_ICS_4_0_3_DevKit_3_0_1

Hello,

I have the same problem, using a BeagleBone (Rev. A5), a LCD7 Cape (Rev. A1) and TI_Android_ICS_4_0_3_DevKit_3_0_1

I think the problem is the detection of the LCD7 Cape:

[ 1.181945] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
[ 1.188476] at24 3-0054: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 1.195861] IN : bone_setup_daughter_board
[ 1.208679] Detected a daughter card on BeagleBone..
[ 1.213714] IN : dvi_init
[ 1.217224] da8xx_lcdc.0: alias fck already exists
[ 1.222656] da8xx_lcdc da8xx_lcdc.0: GLCD: Found 1024x768@60 panel
[ 1.242462] Setup DVI display
[ 1.246917] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.253967] omap2-nand driver initializing
[ 1.258331] OneNAND driver initializing

I have found this article:

https://groups.google.com/forum/#!topic/rowboat/9UC0za1flwk

But i dont know how to solve this problem!

Thanks,

Trunes

Hi,

Could you try out below patch ? ( from matthias)

https://groups.google.com/forum/?fromgroups#!topic/rowboat/9mXkAN-uNJ0

There was a changes in LCD configuration after revision A2.

BR,

satish

Thank you very much!

The LCD is now working, but the touchscreen is inverted (left = right, right = left) and the buttons don't work (home, return etc.).

Only the button to shut down is working...

BR

Trunes

The touchscreen is now working:

i changed following in the ti_tscadc.c file:

old:

if (cur_diff_x < prev_diff_x) {

  prev_diff_x = cur_diff_x;

}

new:

if (cur_diff_x < prev_diff_x) {
  prev_diff_x = cur_diff_x;
  val_x = AM335X_TS_XMAX - readx1; 
}

Now im looking to get the buttons to work...

BR, Trunes

Trunes,

Any luck with the buttons?

Cheers, Georgi

Hello Georgi!

Yes, the buttons are working now :)

I changed the GPIO-Pin numbers in the "board-am335evm.c" to following numbers:

/* Configure GPIOs for Volume Keys */
static struct gpio_keys_button lcd_cape_gpio_buttons[] = {
 {
 .code = KEY_MENU,
 .gpio = GPIO_TO_PIN(1, 17),
 .active_low = true,
 .desc = "menu",
 .type = EV_KEY,
 .wakeup = 1,
 },
 {
 .code = KEY_POWER,
 .gpio = GPIO_TO_PIN(1, 19),
 .active_low = true,
 .desc = "power",
 .type = EV_KEY,
 .wakeup = 1,
 },
 {
 .code = KEY_BACK,
 .gpio = GPIO_TO_PIN(1, 16),
 .active_low = true,
 .desc = "back",
 .type = EV_KEY,
 .wakeup = 1,
 },
};

Now the LCD 7 Cape works perfect with Android 4.0.3 ;-)

BR Trunes