summaryrefslogtreecommitdiffstats
path: root/drivers/painter/st77xx/qp_st7735.c
diff options
context:
space:
mode:
authorDavid Hoelscher <infinityis@users.noreply.github.com>2022-07-31 21:58:25 -0500
committerGitHub <noreply@github.com>2022-07-31 19:58:25 -0700
commit2bdd73f80135965c1047b24b78fdf15c1ebbbee7 (patch)
treeaac4992fdf46dac8a2e6c4d43a245ba558f6febb /drivers/painter/st77xx/qp_st7735.c
parent09ea5f6337452fa5f15b225da2873377f46b1bbc (diff)
Add ST7735 driver to Quantum Painter (#17848)
Diffstat (limited to 'drivers/painter/st77xx/qp_st7735.c')
-rw-r--r--drivers/painter/st77xx/qp_st7735.c144
1 files changed, 144 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