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Add ST7735 driver to Quantum Painter (#17848)

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David Hoelscher 2022-07-31 21:58:25 -05:00 • committed by GitHub
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@ -27,6 +27,7 @@ Hardware supported:
| ILI9488 | RGB LCD | 320x480 | SPI + D/C + RST | `QUANTUM_PAINTER_DRIVERS = ili9488_spi` |
| SSD1351 | RGB OLED | 128x128 | SPI + D/C + RST | `QUANTUM_PAINTER_DRIVERS = ssd1351_spi` |
| ST7789 | RGB LCD | 240x320, 240x240 | SPI + D/C + RST | `QUANTUM_PAINTER_DRIVERS = st7789_spi` |
| ST7735 | RGB LCD | 132x162, 80x160 | SPI + D/C + RST | `QUANTUM_PAINTER_DRIVERS = st7735_spi` |
## Quantum Painter Configuration :id=quantum-painter-config
@ -727,4 +728,30 @@ The maximum number of displays can be configured by changing the following in yo
#define ST7789_NUM_DEVICES 3
```
!> Some ST7789 devices are known to have different drawing offsets -- despite being a 240x320 pixel display controller internally, some display panels are only 240x240, or smaller. These may require an offset to be applied; see `qp_set_viewport_offsets` above for information on how to override the offsets if they aren't correctly rendered.
!> Some ST7789 devices are known to have different drawing offsets -- despite being a 240x320 pixel display controller internally, some display panels are only 240x240, or smaller. These may require an offset to be applied; see `qp_set_viewport_offsets` above for information on how to override the offsets if they aren't correctly rendered.
### ST7735 :id=qp-driver-st7735
Enabling support for the ST7735 in Quantum Painter is done by adding the following to `rules.mk`:
```make
QUANTUM_PAINTER_ENABLE = yes
QUANTUM_PAINTER_DRIVERS = st7735_spi
```
Creating a ST7735 device in firmware can then be done with the following API:
```c
painter_device_t qp_st7735_make_spi_device(uint16_t panel_width, uint16_t panel_height, pin_t chip_select_pin, pin_t dc_pin, pin_t reset_pin, uint16_t spi_divisor, int spi_mode);
```
The device handle returned from the `qp_st7735_make_spi_device` function can be used to perform all other drawing operations.
The maximum number of displays can be configured by changing the following in your `config.h` (default is 1):
```c
// 3 displays:
#define ST7735_NUM_DEVICES 3
```
!> Some ST7735 devices are known to have different drawing offsets -- despite being a 132x162 pixel display controller internally, some display panels are only 80x160, or smaller. These may require an offset to be applied; see `qp_set_viewport_offsets` above for information on how to override the offsets if they aren't correctly rendered.