Tactility/Drivers/ST7796-i8080/Source/St7796i8080Display.cpp
Ken Van Hoeylandt f620255c41
New logging and more (#446)
- `TT_LOG_*` macros are replaced by `Logger` via `#include<Tactility/Logger.h>`
- Changed default timezone to Europe/Amsterdam
- Fix for logic bug in unPhone hardware
- Fix for init/deinit in DRV2605 driver
- Other fixes
- Removed optimization that broke unPhone (disabled the moving of heap-related functions to flash)
2026-01-06 22:35:39 +01:00

275 lines
8.1 KiB
C++

#include "St7796i8080Display.h"
#include <Tactility/Logger.h>
#include <driver/gpio.h>
#include <esp_lcd_panel_io.h>
#include <esp_lcd_panel_ops.h>
#include <esp_lvgl_port.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <lvgl.h>
static const auto LOGGER = tt::Logger("St7796i8080Display");
static St7796i8080Display* g_display_instance = nullptr;
St7796i8080Display::St7796i8080Display(const Configuration& config)
: configuration(config), lock(std::make_shared<std::mutex>()) {
// Validate configuration
if (!configuration.isValid()) {
LOGGER.error("Invalid configuration: resolution must be set");
return;
}
}
bool St7796i8080Display::createI80Bus() {
LOGGER.info("Creating I80 bus");
// Create I80 bus configuration
esp_lcd_i80_bus_config_t bus_cfg = {
.dc_gpio_num = configuration.dcPin,
.wr_gpio_num = configuration.wrPin,
.clk_src = LCD_CLK_SRC_PLL160M,
.data_gpio_nums = {
configuration.dataPins[0], configuration.dataPins[1],
configuration.dataPins[2], configuration.dataPins[3],
configuration.dataPins[4], configuration.dataPins[5],
configuration.dataPins[6], configuration.dataPins[7],
},
.bus_width = configuration.busWidth,
.max_transfer_bytes = configuration.bufferSize * sizeof(uint16_t),
.psram_trans_align = 64,
.sram_trans_align = 4
};
if (esp_lcd_new_i80_bus(&bus_cfg, &i80BusHandle) != ESP_OK) {
LOGGER.error("Failed to create I80 bus");
return false;
}
return true;
}
bool St7796i8080Display::createPanelIO() {
LOGGER.info("Creating panel IO");
// Create panel IO
esp_lcd_panel_io_i80_config_t io_cfg = {
.cs_gpio_num = configuration.csPin,
.pclk_hz = configuration.pixelClockFrequency,
.trans_queue_depth = configuration.transactionQueueDepth,
.on_color_trans_done = nullptr,
.user_ctx = nullptr,
.lcd_cmd_bits = configuration.lcdCmdBits,
.lcd_param_bits = configuration.lcdParamBits,
.dc_levels = {
.dc_idle_level = configuration.dcLevels.dcIdleLevel,
.dc_cmd_level = configuration.dcLevels.dcCmdLevel,
.dc_dummy_level = configuration.dcLevels.dcDummyLevel,
.dc_data_level = configuration.dcLevels.dcDataLevel,
},
.flags = {
.cs_active_high = configuration.flags.csActiveHigh,
.reverse_color_bits = configuration.flags.reverseColorBits,
.swap_color_bytes = configuration.flags.swapColorBytes,
.pclk_active_neg = configuration.flags.pclkActiveNeg,
.pclk_idle_low = configuration.flags.pclkIdleLow
}
};
if (esp_lcd_new_panel_io_i80(i80BusHandle, &io_cfg, &ioHandle) != ESP_OK) {
LOGGER.error("Failed to create panel");
return false;
}
return true;
}
bool St7796i8080Display::createPanel() {
LOGGER.info("Configuring panel");
// Create ST7796 panel
esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = configuration.resetPin,
.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_BGR,
.data_endian = LCD_RGB_DATA_ENDIAN_LITTLE,
.bits_per_pixel = 16,
.flags = {
.reset_active_high = false
},
.vendor_config = nullptr
};
if (esp_lcd_new_panel_st7796(ioHandle, &panel_config, &panelHandle) != ESP_OK) {
LOGGER.error("Failed to create panel");
return false;
}
// Reset panel
if (esp_lcd_panel_reset(panelHandle) != ESP_OK) {
LOGGER.error("Failed to reset panel");
return false;
}
// Initialize panel
if (esp_lcd_panel_init(panelHandle) != ESP_OK) {
LOGGER.error("Failed to init panel");
return false;
}
// Set swap XY
if (esp_lcd_panel_swap_xy(panelHandle, configuration.swapXY) != ESP_OK) {
LOGGER.error("Failed to swap XY ");
return false;
}
// Set mirror
if (esp_lcd_panel_mirror(panelHandle, configuration.mirrorX, configuration.mirrorY) != ESP_OK) {
LOGGER.error("Failed to set panel to mirror");
return false;
}
// Set inversion
if (esp_lcd_panel_invert_color(panelHandle, configuration.invertColor) != ESP_OK) {
LOGGER.error("Failed to set panel to invert");
return false;
}
// Turn on display
if (esp_lcd_panel_disp_on_off(panelHandle, true) != ESP_OK) {
LOGGER.error("Failed to turn display on");
return false;
}
return true;
}
bool St7796i8080Display::start() {
LOGGER.info("Initializing I8080 ST7796 Display hardware...");
// Calculate buffer size if needed
configuration.calculateBufferSize();
// Allocate buffer
size_t buffer_size = configuration.bufferSize * LV_COLOR_FORMAT_GET_SIZE(LV_COLOR_FORMAT_RGB565);
displayBuffer = (uint8_t*)heap_caps_malloc(buffer_size, MALLOC_CAP_DMA);
if (!displayBuffer) {
LOGGER.error("Failed to allocate display buffer");
return false;
}
// Create I80 bus
if (!createI80Bus()) {
stop();
return false;
}
// Create panel IO
if (!createPanelIO()) {
stop();
return false;
}
// Create panel
if (!createPanel()) {
stop();
return false;
}
LOGGER.info("Display hardware initialized");
return true;
}
bool St7796i8080Display::stop() {
// Turn off display
if (panelHandle) {
esp_lcd_panel_disp_on_off(panelHandle, false);
}
// Destroy in reverse order: panel, IO, bus
if (panelHandle) {
esp_lcd_panel_del(panelHandle);
panelHandle = nullptr;
}
if (ioHandle) {
esp_lcd_panel_io_del(ioHandle);
ioHandle = nullptr;
}
if (i80BusHandle) {
esp_lcd_del_i80_bus(i80BusHandle);
i80BusHandle = nullptr;
}
// Free buffer 1
if (displayBuffer) {
heap_caps_free(displayBuffer);
displayBuffer = nullptr;
}
// Turn off backlight
if (configuration.backlightDutyFunction) {
configuration.backlightDutyFunction(0);
}
return true;
}
bool St7796i8080Display::startLvgl() {
LOGGER.info("Initializing LVGL for ST7796 display");
// Don't reinitialize hardware if it's already done
if (!ioHandle) {
LOGGER.info("Hardware not initialized, calling start()");
if (!start()) {
LOGGER.error("Hardware initialization failed");
return false;
}
} else {
LOGGER.info("Hardware already initialized, skipping");
}
// Create LVGL display using lvgl_port
lvgl_port_display_cfg_t display_cfg = {
.io_handle = ioHandle,
.panel_handle = panelHandle,
.control_handle = nullptr,
.buffer_size = configuration.bufferSize,
.double_buffer = false,
.trans_size = 0,
.hres = configuration.horizontalResolution,
.vres = configuration.verticalResolution,
.monochrome = false,
.rotation = {
.swap_xy = configuration.swapXY,
.mirror_x = configuration.mirrorX,
.mirror_y = configuration.mirrorY,
},
.color_format = LV_COLOR_FORMAT_RGB565,
.flags = {
.buff_dma = true,
.buff_spiram = false,
.sw_rotate = false,
.swap_bytes = false,
.full_refresh = false,
.direct_mode = false
}
};
// Create the LVGL display
lvglDisplay = lvgl_port_add_disp(&display_cfg);
if (!lvglDisplay) {
LOGGER.error("Failed to create LVGL display");
return false;
}
g_display_instance = this;
LOGGER.info("LVGL display created successfully");
return true;
}
bool St7796i8080Display::stopLvgl() {
if (lvglDisplay) {
lvgl_port_remove_disp(lvglDisplay);
lvglDisplay = nullptr;
}
return true;
}