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// Copyright 2023 Nick Brassel (@tzarc)
// SPDX-License-Identifier: GPL-2.0-or-later
#include "qp_internal.h"
#include "qp_comms.h"
#include "qp_oled_panel.h"
#include "qp_sh1106.h"
#include "qp_sh1106_opcodes.h"
#include "qp_surface.h"
#include "qp_surface_internal.h"
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Driver storage
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
typedef struct sh1106_device_t {
oled_panel_painter_device_t oled;
uint8_t framebuffer[SURFACE_REQUIRED_BUFFER_BYTE_SIZE(128, 64, 1)];
} sh1106_device_t;
static sh1106_device_t sh1106_drivers[SH1106_NUM_DEVICES] = {0};
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter API implementations
// Initialisation
__attribute__((weak)) bool qp_sh1106_init(painter_device_t device, painter_rotation_t rotation) {
sh1106_device_t *driver = (sh1106_device_t *)device;
// Change the surface geometry based on the panel rotation
if (rotation == QP_ROTATION_90 || rotation == QP_ROTATION_270) {
driver->oled.surface.base.panel_width = driver->oled.base.panel_height;
driver->oled.surface.base.panel_height = driver->oled.base.panel_width;
} else {
driver->oled.surface.base.panel_width = driver->oled.base.panel_width;
driver->oled.surface.base.panel_height = driver->oled.base.panel_height;
}
// Init the internal surface
if (!qp_init(&driver->oled.surface.base, QP_ROTATION_0)) {
qp_dprintf("Failed to init internal surface in qp_sh1106_init\n");
return false;
}
// clang-format off
uint8_t sh1106_init_sequence[] = {
// Command, Delay, N, Data[N]
SH1106_SET_MUX_RATIO, 0, 1, 0x3F,
SH1106_DISPLAY_OFFSET, 0, 1, 0x00,
SH1106_DISPLAY_START_LINE, 0, 0,
SH1106_SET_SEGMENT_REMAP_INV, 0, 0,
SH1106_COM_SCAN_DIR_DEC, 0, 0,
SH1106_COM_PADS_HW_CFG, 0, 1, 0x12,
SH1106_SET_CONTRAST, 0, 1, 0x7F,
SH1106_ALL_ON_RESUME, 0, 0,
SH1106_NON_INVERTING_DISPLAY, 0, 0,
SH1106_SET_OSC_DIVFREQ, 0, 1, 0x80,
SH1106_SET_CHARGE_PUMP, 0, 1, 0x14,
SH1106_DISPLAY_ON, 0, 0,
};
// clang-format on
// If the display height is anything other than the default 64 pixels, change SH1106_SET_MUX_RATIO data byte to the correct value
if (driver->oled.base.panel_height != 64) {
sh1106_init_sequence[3] = driver->oled.base.panel_height - 1;
}
// For 128x32 or 96x16 displays, change SH1106_COM_PADS_HW_CFG data byte from alternative (0x12) to sequential (0x02) configuration
if (driver->oled.base.panel_height <= 32) {
sh1106_init_sequence[20] = 0x02;
}
qp_comms_bulk_command_sequence(device, sh1106_init_sequence, sizeof(sh1106_init_sequence));
return true;
}
// Screen flush
bool qp_sh1106_flush(painter_device_t device) {
sh1106_device_t *driver = (sh1106_device_t *)device;
if (!driver->oled.surface.dirty.is_dirty) {
return true;
}
switch (driver->oled.base.rotation) {
default:
case QP_ROTATION_0:
qp_oled_panel_page_column_flush_rot0(device, &driver->oled.surface.dirty, driver->framebuffer);
break;
case QP_ROTATION_90:
qp_oled_panel_page_column_flush_rot90(device, &driver->oled.surface.dirty, driver->framebuffer);
break;
case QP_ROTATION_180:
qp_oled_panel_page_column_flush_rot180(device, &driver->oled.surface.dirty, driver->framebuffer);
break;
case QP_ROTATION_270:
qp_oled_panel_page_column_flush_rot270(device, &driver->oled.surface.dirty, driver->framebuffer);
break;
}
// Clear the dirty area
qp_flush(&driver->oled.surface);
return true;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Driver vtable
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
const oled_panel_painter_driver_vtable_t sh1106_driver_vtable = {
.base =
{
.init = qp_sh1106_init,
.power = qp_oled_panel_power,
.clear = qp_oled_panel_clear,
.flush = qp_sh1106_flush,
.pixdata = qp_oled_panel_passthru_pixdata,
.viewport = qp_oled_panel_passthru_viewport,
.palette_convert = qp_oled_panel_passthru_palette_convert,
.append_pixels = qp_oled_panel_passthru_append_pixels,
.append_pixdata = qp_oled_panel_passthru_append_pixdata,
},
.opcodes =
{
.display_on = SH1106_DISPLAY_ON,
.display_off = SH1106_DISPLAY_OFF,
.set_page = SH1106_PAGE_ADDR,
.set_column_lsb = SH1106_SETCOLUMN_LSB,
.set_column_msb = SH1106_SETCOLUMN_MSB,
},
};
#ifdef QUANTUM_PAINTER_SH1106_SPI_ENABLE
// Factory function for creating a handle to the SH1106 device
painter_device_t qp_sh1106_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 < SH1106_NUM_DEVICES; ++i) {
sh1106_device_t *driver = &sh1106_drivers[i];
if (!driver->oled.base.driver_vtable) {
painter_device_t surface = qp_make_mono1bpp_surface_advanced(&driver->oled.surface, 1, panel_width, panel_height, driver->framebuffer);
if (!surface) {
return NULL;
}
// Setup the OLED device
driver->oled.base.driver_vtable = (const painter_driver_vtable_t *)&sh1106_driver_vtable;
driver->oled.base.comms_vtable = (const painter_comms_vtable_t *)&spi_comms_with_dc_vtable;
driver->oled.base.native_bits_per_pixel = 1; // 1bpp mono
driver->oled.base.panel_width = panel_width;
driver->oled.base.panel_height = panel_height;
driver->oled.base.rotation = QP_ROTATION_0;
driver->oled.base.offset_x = 0;
driver->oled.base.offset_y = 0;
// SPI and other pin configuration
driver->oled.base.comms_config = &driver->oled.spi_dc_reset_config;
driver->oled.spi_dc_reset_config.spi_config.chip_select_pin = chip_select_pin;
driver->oled.spi_dc_reset_config.spi_config.divisor = spi_divisor;
driver->oled.spi_dc_reset_config.spi_config.lsb_first = false;
driver->oled.spi_dc_reset_config.spi_config.mode = spi_mode;
driver->oled.spi_dc_reset_config.dc_pin = dc_pin;
driver->oled.spi_dc_reset_config.reset_pin = reset_pin;
driver->oled.spi_dc_reset_config.command_params_uses_command_pin = true;
if (!qp_internal_register_device((painter_device_t)driver)) {
memset(driver, 0, sizeof(sh1106_device_t));
return NULL;
}
return (painter_device_t)driver;
}
}
return NULL;
}
#endif // QUANTUM_PAINTER_SH1106_SPI_ENABLE
#ifdef QUANTUM_PAINTER_SH1106_I2C_ENABLE
// Factory function for creating a handle to the SH1106 device
painter_device_t qp_sh1106_make_i2c_device(uint16_t panel_width, uint16_t panel_height, uint8_t i2c_address) {
for (uint32_t i = 0; i < SH1106_NUM_DEVICES; ++i) {
sh1106_device_t *driver = &sh1106_drivers[i];
if (!driver->oled.base.driver_vtable) {
// Instantiate the surface, intentional swap of width/high due to transpose
painter_device_t surface = qp_make_mono1bpp_surface_advanced(&driver->oled.surface, 1, panel_width, panel_height, driver->framebuffer);
if (!surface) {
return NULL;
}
// Setup the OLED device
driver->oled.base.driver_vtable = (const painter_driver_vtable_t *)&sh1106_driver_vtable;
driver->oled.base.comms_vtable = (const painter_comms_vtable_t *)&i2c_comms_cmddata_vtable;
driver->oled.base.native_bits_per_pixel = 1; // 1bpp mono
driver->oled.base.panel_width = panel_width;
driver->oled.base.panel_height = panel_height;
driver->oled.base.rotation = QP_ROTATION_0;
driver->oled.base.offset_x = 0;
driver->oled.base.offset_y = 0;
// I2C configuration
driver->oled.base.comms_config = &driver->oled.i2c_config;
driver->oled.i2c_config.chip_address = i2c_address;
if (!qp_internal_register_device((painter_device_t)driver)) {
memset(driver, 0, sizeof(sh1106_device_t));
return NULL;
}
return (painter_device_t)driver;
}
}
return NULL;
}
#endif // QUANTUM_PAINTER_SH1106_I2C_ENABLE
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