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Revert "DRIVERS.md Add notes on Waveshare Pico Res Touch."

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Peter Hinch 2022-05-04 10:04:54 +01:00
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DRIVERS.md
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@ -35,8 +35,7 @@ access via the `Writer` and `CWriter` classes is documented
3.2 [Drivers for ILI9341](./DRIVERS.md#32-drivers-for-ili9341) Large TFTs
3.3 [Drivers for ST7789](./DRIVERS.md#33-drivers-for-st7789) Small high density TFTs
     3.3.1 [TTGO T Display](./DRIVERS.md#331-ttgo-t-display) Low cost ESP32 with integrated display
     3.3.2 [Waveshare Pico ResTouch LCD 2.8](./DRIVERS.md#332-waveshare-Pico-restouch-lcd) 2.8" display for Pico
     3.3.3 [Troubleshooting](./DRIVERS.md#332-troubleshooting)
     3.3.2 [Troubleshooting](./DRIVERS.md#332-troubleshooting)
4. [Drivers for sharp displays](./DRIVERS.md#4-drivers-for-sharp-displays) Large low power monochrome displays
4.1 [Display characteristics](./DRIVERS.md#41-display-characteristics)
     4.1.1 [The VCOM bit](./DRIVERS.md#411-the-vcom-bit)
@ -519,34 +518,7 @@ URL's. More in `st7789_ttgo.py`
[Another MicroPython driver](https://github.com/jikegong/TTGO-Esp32-ST7789-Display-MicroPython/blob/2ed1816c41f25c8993038c35ef40b2efeb225dcc/st7789.py)
[Factory test (C)](https://github.com/Xinyuan-LilyGO/TTGO-T-Display/blob/master/TFT_eSPI/examples/FactoryTest/FactoryTest.ino)
### 3.3.2 Waveshare Pico ResTouch LCD
This 2.8" display for the Raspberry RP2 Pico has been tested by user
[TimWermer](https://github.com/TimWermer), see this
[GitHub thread](https://github.com/peterhinch/micropython-nano-gui/discussions/31).
The display may be found [here](https://www.waveshare.com/Pico-ResTouch-LCD-2.8.htm).
Neither `nanogui` or `microgui` support touch functionality.
Tim Werner used a modified device driver. For the standard driver
`color_setup.py` for `nanogui` should read as follows:
```python
from machine import Pin, SPI
import gc
from drivers.st7789.st7789_4bit import *
SSD = ST7789
pdc = Pin(8, Pin.OUT, value=0)
pcs = Pin(9, Pin.OUT, value=1)
prst = Pin(15, Pin.OUT, value=1)
pbl = Pin(13, Pin.OUT, value=1) # Backlight
gc.collect() # Precaution before instantiating framebuf
# Conservative low baudrate. Can go to 62.5MHz. Depending on wiring.
spi = SPI(1, 30_000_000, sck=Pin(10), mosi=Pin(11), miso=Pin(12))
ssd = SSD(spi, dc=pdc, cs=pcs, rst=prst, height=320, width=240, display=GENERIC)
```
### 3.3.3 Troubleshooting
### 3.3.2 Troubleshooting
If your display shows garbage, check the following (I have seen both):
* SPI baudrate too high for your physical layout.