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gdeh0154d67 200x200
Martin F edited this page Mar 18, 2023
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1 revision
- Size: 200 * 200, 1.54 inches
- Controller: SSD1681
- Status: Working
- Partial update: Working - Needs more testing
- Requested in Issue 31
- Similar model to gped015OC1 (OC1 is older and with IL3829 controller)
- Red/Black version: gdeh0154z90
Full update - non SPI optimized
STATS (ms)
190 _wakeUp settings+send Buffer
2671 update
2862 total time in millis
Partial update box width:180 height:60
231 _wakeUp settings+send Buffer
645 update
clean_buffer:88
965 total time in millis
Same partial update after optimizing SPI data transmission
211 _wakeUp settings+send Buffer
645 update
clean_buffer:13
871 total time in millis
It was hard to get working correctly the partial update. We noticed that a bug triggers on the second partial update unless you do a full buffer update. That we execute with the following code:
// Clean buffer: 0x01 is essential
_setRamDataEntryMode(0x01);
IO.cmd(0x24);
for (int16_t x1 = xs_d8; x1 <= GDEH0154D67_BUFFER_SIZE; x1++)
{
IO.data(0xFF);
}
Without doing that the second partial update black color comes as Black with small white dots (Kind of reads of the raw RAM or has a non-clean buffer)
Revision v.1.3 | Firmware for ESP-IDF >= v. 4.3 Documentation written by Fasani Corp.
If you need test images or want to download with ESP32 a WiFi image to your Epaper I recommend testing our project CALE Screen manager to deliver fresh BMP/JPG to your WiFi displays