diff options
Diffstat (limited to 'drivers/painter/st77xx')
| -rw-r--r-- | drivers/painter/st77xx/qp_st7735.c | 144 | ||||
| -rw-r--r-- | drivers/painter/st77xx/qp_st7735.h | 45 | ||||
| -rw-r--r-- | drivers/painter/st77xx/qp_st7735_opcodes.h | 31 |
3 files changed, 220 insertions, 0 deletions
diff --git a/drivers/painter/st77xx/qp_st7735.c b/drivers/painter/st77xx/qp_st7735.c new file mode 100644 index 0000000000..e434e31b92 --- /dev/null +++ b/drivers/painter/st77xx/qp_st7735.c @@ -0,0 +1,144 @@ +// Copyright 2021 Paul Cotter (@gr1mr3aver) +// Copyright 2021 Nick Brassel (@tzarc) +// Copyright 2022 David Hoelscher (@customMK) +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "qp_internal.h" +#include "qp_comms.h" +#include "qp_st7735.h" +#include "qp_st77xx_opcodes.h" +#include "qp_st7735_opcodes.h" +#include "qp_tft_panel.h" + +#ifdef QUANTUM_PAINTER_ST7735_SPI_ENABLE +# include "qp_comms_spi.h" +#endif // QUANTUM_PAINTER_ST7735_SPI_ENABLE + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Common + +// Driver storage +tft_panel_dc_reset_painter_device_t st7735_drivers[ST7735_NUM_DEVICES] = {0}; + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Automatic viewport offsets + +#ifndef ST7735_NO_AUTOMATIC_OFFSETS +static inline void st7735_automatic_viewport_offsets(painter_device_t device, painter_rotation_t rotation) { + struct painter_driver_t *driver = (struct painter_driver_t *)device; + + // clang-format off + const struct { + uint16_t offset_x; + uint16_t offset_y; + } rotation_offsets_80x160[] = { + [QP_ROTATION_0] = { .offset_x = 24, .offset_y = 0 }, + [QP_ROTATION_90] = { .offset_x = 0, .offset_y = 24 }, + [QP_ROTATION_180] = { .offset_x = 24, .offset_y = 0 }, + [QP_ROTATION_270] = { .offset_x = 0, .offset_y = 24 }, + }; + // clang-format on + + if (driver->panel_width == 80 && driver->panel_height == 160) { + driver->offset_x = rotation_offsets_80x160[rotation].offset_x; + driver->offset_y = rotation_offsets_80x160[rotation].offset_y; + } +} +#endif // ST7735_NO_AUTOMATIC_OFFSETS + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Initialization + +bool qp_st7735_init(painter_device_t device, painter_rotation_t rotation) { + // clang-format off + const uint8_t st7735_init_sequence[] = { + // Command, Delay, N, Data[N] + ST77XX_CMD_RESET, 120, 0, + ST77XX_CMD_SLEEP_OFF, 5, 0, + ST77XX_SET_PIX_FMT, 0, 1, 0x55, + ST77XX_CMD_INVERT_OFF, 0, 0, + ST77XX_CMD_NORMAL_ON, 0, 0, + ST77XX_CMD_DISPLAY_ON, 20, 0 + }; + // clang-format on + qp_comms_bulk_command_sequence(device, st7735_init_sequence, sizeof(st7735_init_sequence)); + + // Configure the rotation (i.e. the ordering and direction of memory writes in GRAM) + const uint8_t madctl[] = { + [QP_ROTATION_0] = ST77XX_MADCTL_BGR, + [QP_ROTATION_90] = ST77XX_MADCTL_BGR | ST77XX_MADCTL_MX | ST77XX_MADCTL_MV, + [QP_ROTATION_180] = ST77XX_MADCTL_BGR | ST77XX_MADCTL_MX | ST77XX_MADCTL_MY, + [QP_ROTATION_270] = ST77XX_MADCTL_BGR | ST77XX_MADCTL_MV | ST77XX_MADCTL_MY, + }; + qp_comms_command_databyte(device, ST77XX_SET_MADCTL, madctl[rotation]); + +#ifndef ST7735_NO_AUTOMATIC_VIEWPORT_OFFSETS + st7735_automatic_viewport_offsets(device, rotation); +#endif // ST7735_NO_AUTOMATIC_VIEWPORT_OFFSETS + + return true; +} + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Driver vtable + +const struct tft_panel_dc_reset_painter_driver_vtable_t st7735_driver_vtable = { + .base = + { + .init = qp_st7735_init, + .power = qp_tft_panel_power, + .clear = qp_tft_panel_clear, + .flush = qp_tft_panel_flush, + .pixdata = qp_tft_panel_pixdata, + .viewport = qp_tft_panel_viewport, + .palette_convert = qp_tft_panel_palette_convert_rgb565_swapped, + .append_pixels = qp_tft_panel_append_pixels_rgb565, + }, + .num_window_bytes = 2, + .swap_window_coords = false, + .opcodes = + { + .display_on = ST77XX_CMD_DISPLAY_ON, + .display_off = ST77XX_CMD_DISPLAY_OFF, + .set_column_address = ST77XX_SET_COL_ADDR, + .set_row_address = ST77XX_SET_ROW_ADDR, + .enable_writes = ST77XX_SET_MEM, + }, +}; + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// SPI + +#ifdef QUANTUM_PAINTER_ST7735_SPI_ENABLE + +// Factory function for creating a handle to the ST7735 device +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) { + for (uint32_t i = 0; i < ST7735_NUM_DEVICES; ++i) { + tft_panel_dc_reset_painter_device_t *driver = &st7735_drivers[i]; + if (!driver->base.driver_vtable) { + driver->base.driver_vtable = (const struct painter_driver_vtable_t *)&st7735_driver_vtable; + driver->base.comms_vtable = (const struct painter_comms_vtable_t *)&spi_comms_with_dc_vtable; + driver->base.panel_width = panel_width; + driver->base.panel_height = panel_height; + driver->base.rotation = QP_ROTATION_0; + driver->base.offset_x = 0; + driver->base.offset_y = 0; + driver->base.native_bits_per_pixel = 16; // RGB565 + + // SPI and other pin configuration + driver->base.comms_config = &driver->spi_dc_reset_config; + driver->spi_dc_reset_config.spi_config.chip_select_pin = chip_select_pin; + driver->spi_dc_reset_config.spi_config.divisor = spi_divisor; + driver->spi_dc_reset_config.spi_config.lsb_first = false; + driver->spi_dc_reset_config.spi_config.mode = spi_mode; + driver->spi_dc_reset_config.dc_pin = dc_pin; + driver->spi_dc_reset_config.reset_pin = reset_pin; + return (painter_device_t)driver; + } + } + return NULL; +} + +#endif // QUANTUM_PAINTER_ST7735_SPI_ENABLE + +////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
\ No newline at end of file diff --git a/drivers/painter/st77xx/qp_st7735.h b/drivers/painter/st77xx/qp_st7735.h new file mode 100644 index 0000000000..a9ce16bef1 --- /dev/null +++ b/drivers/painter/st77xx/qp_st7735.h @@ -0,0 +1,45 @@ +// Copyright 2021 Paul Cotter (@gr1mr3aver) +// Copyright 2021 Nick Brassel (@tzarc) +// Copyright 2022 David Hoelscher (@customMK) +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +#include "gpio.h" +#include "qp_internal.h" + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Quantum Painter ST7735 configurables (add to your keyboard's config.h) + +#ifndef ST7735_NUM_DEVICES +/** + * @def This controls the maximum number of ST7735 devices that Quantum Painter can communicate with at any one time. + * Increasing this number allows for multiple displays to be used. + */ +# define ST7735_NUM_DEVICES 1 +#endif + +// Additional configuration options to be copied to your keyboard's config.h (don't change here): + +// If you know exactly which offsets should be used on your panel with respect to selected rotation, then this config +// option allows you to save some flash space -- you'll need to invoke qp_set_viewport_offsets() instead from your keyboard. +// #define ST7735_NO_AUTOMATIC_VIEWPORT_OFFSETS + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Quantum Painter ST7735 device factories + +#ifdef QUANTUM_PAINTER_ST7735_SPI_ENABLE +/** + * Factory method for an ST7735 SPI LCD device. + * + * @param panel_width[in] the width of the display panel + * @param panel_height[in] the height of the display panel + * @param chip_select_pin[in] the GPIO pin used for SPI chip select + * @param dc_pin[in] the GPIO pin used for D/C control + * @param reset_pin[in] the GPIO pin used for RST + * @param spi_divisor[in] the SPI divisor to use when communicating with the display + * @param spi_mode[in] the SPI mode to use when communicating with the display + * @return the device handle used with all drawing routines in Quantum Painter + */ +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); +#endif // QUANTUM_PAINTER_ST7735_SPI_ENABLE
\ No newline at end of file diff --git a/drivers/painter/st77xx/qp_st7735_opcodes.h b/drivers/painter/st77xx/qp_st7735_opcodes.h new file mode 100644 index 0000000000..3cbef78537 --- /dev/null +++ b/drivers/painter/st77xx/qp_st7735_opcodes.h @@ -0,0 +1,31 @@ +// Copyright 2022 David Hoelscher (@customMK) +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Quantum Painter ST7735 additional command opcodes + +// Panel Function Commands +#define ST7735_SET_FRAME_RATE_CTL_1 0xB1 // Set frame rate control 1 +#define ST7735_SET_FRAME_RATE_CTL_2 0xB2 // Set frame rate control 2 +#define ST7735_SET_FRAME_RATE_CTL_3 0xB3 // Set frame rate control 3 +#define ST7735_SET_INVERSION_CTL 0xB4 // Set inversion mode control +#define ST7735_SET_DISPLAY_CTL 0xB6 // Set display control 5 +#define ST7735_SET_POWER_CTL_1 0xC0 // Set GVDD +#define ST7735_SET_POWER_CTL_2 0xC1 // Set VGH and VGL +#define ST7735_SET_POWER_CTL_3 0xC2 // Set normal mode op amp current +#define ST7735_SET_POWER_CTL_4 0xC3 // Set idle mode op amp current +#define ST7735_SET_POWER_CTL_5 0xC4 // Set partial mode op amp current +#define ST7735_SET_VCOM_CTL 0xC5 // Set VCOM voltages +#define ST7735_SET_VCOM_OFFSET_CTL 0xC7 // Set VCOM offset ctl +#define ST7735_SET_LCD_ID 0xD1 // Set LCD module version +#define ST7735_SET_PROJECT_ID 0xD2 // Set product project ID +#define ST7735_SET_POWER_CTL_6 0xFC // Set partial+idle op amp current +#define ST7735_SET_NVMEM_CTL_STATUS 0xD9 // EEPROM Control Status +#define ST7735_SET_NVMEM_READ_CMD 0xCC // EEPROM Read Command +#define ST7735_SET_NVMEM_WRITE_CMD 0xDF // EEPROM Write Command +#define ST7735_SET_PGAMMA 0xE0 // Set positive gamma +#define ST7735_SET_NGAMMA 0xE1 // Set negative gamma +#define ST7735_SET_EXTENSION_ENABLE 0xF0 // Enable extension command +#define ST7735_SET_VCOM_DELAY 0xFF // Set VCOM delay time |