this is the thread on the ESPHone Server
There is nothing that can be done in YAML itās all in the low level st7701s driver code. I probably need to work out who maintains the driver source and contact them to co-ordinate changes I guess?
I just get a āyou do not have permissionā¦ā error on that discord channel - no idea I donāt really use discord much.
Sent you an invite to the Discord server
That would be me.
The SPI conflict might be helped by using software SPI, which can be specified in YAML. It is also possible that the st7701s driver code needs tweaking so that the RGB setup is done after the SPI stuff is finished. Iāll have a look when I get a moment.
I have another potential change for the driver upcoming - thereās another related driver (rpi_dpi_rgb) that I have just modified so that the display is shutdown during OTA, without which the PSRAM runs out of bandwidth. The symptom was an network failure during OTA updates.
The same tweak might be needed for the st7701s. It does need ESP-IDF 5.x.
Since i almost threw this garbage away, I havenāt commented. But updated github, so it at least 
builds for S3 and S2. Donāt know if it runs thoā¦
GitHub - velijv/nesp: Nest Thermostat clone on a rotary display running @esphome
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Thanks to @col135 and the recent new delay feature PR#7373 by @clydebarrow Iāve managed to get the test pattern working on the ZX2D10GE01R-V4848. Thereās been discussion on Discord, but I thought Iād outline all the steps here for the record.
The delay feature for ST7701s is currently in ESPHome 2024.9.0beta1 as of writing, but you still need to manually modify st7701s.cpp per the posts above to moving the init sequence earlier and destroying the SPI because of how the SPI pins are shared with the display on this device.
st7701s.cpp:
I donāt know how well these changes will impact any other ST7701s devices and I donāt have any other ones to test, so Iām probably not the best person to raise a PR.
The yaml file:
display:
- platform: st7701s
id: ${device_name}_display
spi_mode: MODE0
data_rate: 10MHz
color_order: RGB
# XXX DEBUG
show_test_card: true
# XXX
dimensions:
width: 480
height: 480
cs_pin: 21
de_pin: 39
vsync_pin: 48
hsync_pin: 40
pclk_pin:
number: 45
ignore_strapping_warning: true
pclk_frequency: 15MHz
pclk_inverted: false
hsync_pulse_width: 10
hsync_back_porch: 10
hsync_front_porch: 10
vsync_pulse_width: 2
vsync_back_porch: 12
vsync_front_porch: 14
data_pins:
blue:
- number: 47 # LCD_D0 = b0
allow_other_uses: true
- number: 41 # LCD_D1 = b1
allow_other_uses: true
- 0 # LCD_D2 = b2
- 42 # LCD_D3 = b3
- 14 # LCD_D4 = b4
green:
- 8 # LCD_D5 = g0
- 13 # LCD_D6 = g1
- 18 # LCD_D7 = g2
- 12 # LCD_D8 = g3
- 11 # LCD_D9 = g4
- 17 # LCD_D10 = g5
red:
- 10 # LCD_D11 = r0
- 16 # LCD_D12 = r1
- 9 # LCD_D13 = r2
- 15 # LCD_D14 = r3
- 46 # LCD_D15 = r4
init_sequence:
# Reference: wireless-tag sample code:
# https://github.com/wireless-tag-com/ZX2D10GE01R-V4848/blob/ad21b3659527618fdd752cc0801b0a36f6c5e52c/main/screen.c
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x13]
- [0xEF, 0x08]
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x10] # CMD2_BKSEL (already in esphome ST7701S::write_init_sequence_)
- [0xC0, 0x3B, 0x00] # Scan line
- [0xC1, 0x0B, 0x02] # VBP
- [0xC2, 0x07, 0x02]
- [0xCC, 0x10]
- [0xCD, 0x08] # RGB format | ?565??? 666??
- [0xB0, 0x00, 0x11, 0x16, 0x0e, 0x11, 0x06, 0x05, 0x09, 0x08, 0x21, 0x06, 0x13, 0x10, 0x29, 0x31, 0x18] # IPS | 255 | 251 | 247 down | 239 | 231 | 203 | 175 | 147 | 108 | 80 | 52 | 24 | 16 | 8 down | 4 | 0
- [0xB1, 0x00, 0x11, 0x16, 0x0e, 0x11, 0x07, 0x05, 0x09, 0x09, 0x21, 0x05, 0x13, 0x11, 0x2a, 0x31, 0x18] # IPS | 255 | 251 | 247 down | 239 | 231 | 203 | 175 | 147 | 108 | 80 | 52 | 24 | 16 | 8 down | 4 | 0
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x11]
- [0xB0, 0x6d] # VOP 3.5375+ *x 0.0125 | 5D
- [0xB1, 0x37] # VCOM amplitude setting
- [0xB2, 0x81] # VGH Voltage setting | 12V
- [0xB3, 0x80]
- [0xB5, 0x43] # VGL Voltage setting | -8.3V
- [0xB7, 0x85]
- [0xB8, 0x20]
- [0xC1, 0x78]
- [0xC2, 0x78]
- [0xD0, 0x88]
- [0xE0, 0x00, 0x00, 0x02]
- [0xE1, 0x03, 0xA0, 0x00, 0x00, 0x04, 0xA0, 0x00, 0x00, 0x00, 0x20, 0x20]
- [0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
- [0xE3, 0x00, 0x00, 0x11, 0x00]
- [0xE4, 0x22, 0x00]
- [0xE5, 0x05, 0xEC, 0xA0, 0xA0, 0x07, 0xEE, 0xA0, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
- [0xE6, 0x00, 0x00, 0x11, 0x00]
- [0xE7, 0x22, 0x00]
- [0xE8, 0x06, 0xED, 0xA0, 0xA0, 0x08, 0xEF, 0xA0, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
- [0xEB, 0x00, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00]
- [0xED, 0xFF, 0xFF, 0xFF, 0xBA, 0x0A, 0xBF, 0x45, 0xFF, 0xFF, 0x54, 0xFB, 0xA0, 0xAB, 0xFF, 0xFF, 0xFF]
- [0xEF, 0x10, 0x0D, 0x04, 0x08, 0x3F, 0x1F]
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x13]
- [0xEF, 0x08]
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x00]
- [0x36, 0x00] # MADCTL_CMD (already in esphome ST7701S::write_init_sequence_)
- [0x3A, 0x66] # COLMOD 55/50=16bit(RGB565); 66=18bit(RGB666); 77?????3AH?=24bit(RGB888)
- [0x11] # SLEEP_OUT (already in esphome)
- delay 120ms
- [0x29] # DISPLAY_ON (already in esphome)
- delay 20ms
2 Likes
Hello everybody,
my name is Nicola and Iām the founder of seedlabs.it. We are building open source devices that helps optimize the energy consumption of your home.
We recently commercialised a dev kit based on the haptic smart knob that Scott developed, and we are now building a consumer grade version.
I really like the work being done here, and fwiw, our main use case for the consumer version is to do a thermostat that is easy to use and open to any system, so hopefully you get to play with it soon (in case you didnāt get a SmartKnob Dev Kit already)
Did that mean it will be open source?
The dev kit is already open source (both hardware and software), and the consumer product will also be open source (hardware and software).
Depending on the architecture weāll use for the prediction part of the software (forecasting and energy optimization) we might not opensource that, but thatās the only part it is still TBD.
Could you please direct us to your hardware and software repositories?
Iām getting this error when compiling and clearing the build files, is this because I havenāt uopdated the cpp file?
Expected integer, but cannot parse delay 120ms as an integer.
- delay 120ms
- - 41
Expected integer, but cannot parse delay 20ms as an integer.
- delay 20ms
Are you using the ESPHome beta version? The delay feature is not in the current release. The other changes (to the CPP file) are now in a PR you can use as an external component.
1 Like
Ah, yeah no Beta, iāll sort out the beta i think soni can have a play, cheers
On ESPHome Dev now and it compiled 
but screen isnt working yet. I see i still need to update the .cpp file? Where do I find that and where do I put it? Sorry if this is a simple question
If youāre using the Dev branch then the CPP file changes are already there.
OK so uninstalling everything and reinstalling ESPHome Beta is working! 
2 Likes
Soo, what is everyones project with this device
