Implemented LilyGO T-Lora Pager (#295)
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flip
@@ -0,0 +1,5 @@
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idf_component_register(
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SRC_DIRS "Source"
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INCLUDE_DIRS "Source"
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REQUIRES Tactility esp_lvgl_port esp_lcd_st7796 driver
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)
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# ST7796
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A basic ESP32 LVGL driver for ST7796 displays.
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#include "St7796Display.h"
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#include <Tactility/Log.h>
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#include <esp_lcd_panel_commands.h>
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#include <esp_lcd_panel_dev.h>
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#include <esp_lcd_st7796.h>
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#include <esp_lvgl_port.h>
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#define TAG "st7796"
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bool St7796Display::start() {
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TT_LOG_I(TAG, "Starting");
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const esp_lcd_panel_io_spi_config_t panel_io_config = {
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.cs_gpio_num = configuration->csPin,
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.dc_gpio_num = configuration->dcPin,
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.spi_mode = 0,
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.pclk_hz = configuration->pixelClockFrequency,
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.trans_queue_depth = configuration->transactionQueueDepth,
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.on_color_trans_done = nullptr,
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.user_ctx = nullptr,
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.lcd_cmd_bits = 8,
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.lcd_param_bits = 8,
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.cs_ena_pretrans = 0,
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.cs_ena_posttrans = 0,
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.flags = {
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.dc_high_on_cmd = 0,
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.dc_low_on_data = 0,
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.dc_low_on_param = 0,
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.octal_mode = 0,
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.quad_mode = 0,
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.sio_mode = 0,
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.lsb_first = 0,
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.cs_high_active = 0
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}
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};
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if (esp_lcd_new_panel_io_spi(configuration->spiBusHandle, &panel_io_config, &ioHandle) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to create panel");
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return false;
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}
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static const st7796_lcd_init_cmd_t lcd_init_cmds[] = {
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{0x01, (uint8_t[]) {0x00}, 0, 120},
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{0x11, (uint8_t[]) {0x00}, 0, 120},
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{0xF0, (uint8_t[]) {0xC3}, 1, 0},
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{0xF0, (uint8_t[]) {0xC3}, 1, 0},
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{0xF0, (uint8_t[]) {0x96}, 1, 0},
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{0x36, (uint8_t[]) {0x58}, 1, 0},
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{0x3A, (uint8_t[]) {0x55}, 1, 0},
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{0xB4, (uint8_t[]) {0x01}, 1, 0},
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{0xB6, (uint8_t[]) {0x80, 0x02, 0x3B}, 3, 0},
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{0xE8, (uint8_t[]) {0x40, 0x8A, 0x00, 0x00, 0x29, 0x19, 0xA5, 0x33}, 8, 0},
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{0xC1, (uint8_t[]) {0x06}, 1, 0},
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{0xC2, (uint8_t[]) {0xA7}, 1, 0},
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{0xC5, (uint8_t[]) {0x18}, 1, 0},
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{0xE0, (uint8_t[]) {0xF0, 0x09, 0x0b, 0x06, 0x04, 0x15, 0x2F, 0x54, 0x42, 0x3C, 0x17, 0x14, 0x18, 0x1B}, 15, 0},
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{0xE1, (uint8_t[]) {0xE0, 0x09, 0x0b, 0x06, 0x04, 0x03, 0x2B, 0x43, 0x42, 0x3B, 0x16, 0x14, 0x17, 0x1B}, 15, 120},
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{0xF0, (uint8_t[]) {0x3C}, 1, 0},
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{0xF0, (uint8_t[]) {0x69}, 1, 0},
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{0x21, (uint8_t[]) {0x00}, 1, 0},
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{0x29, (uint8_t[]) {0x00}, 1, 0},
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};
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st7796_vendor_config_t vendor_config = {
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// Uncomment these lines if use custom initialization commands
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.init_cmds = lcd_init_cmds,
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.init_cmds_size = sizeof(lcd_init_cmds) / sizeof(st7796_lcd_init_cmd_t),
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};
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const esp_lcd_panel_dev_config_t panel_config = {
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.reset_gpio_num = configuration->resetPin, // Set to -1 if not use
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#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
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.color_space = ESP_LCD_COLOR_SPACE_RGB,
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#else
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.color_space = LCD_RGB_ELEMENT_ORDER_RGB,
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.data_endian = LCD_RGB_DATA_ENDIAN_LITTLE,
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#endif
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.bits_per_pixel = 16,
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.vendor_config = &vendor_config
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};
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/*
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const esp_lcd_panel_dev_config_t panel_config = {
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.reset_gpio_num = configuration->resetPin,
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.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
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.data_endian = LCD_RGB_DATA_ENDIAN_LITTLE,
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.bits_per_pixel = 16,
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.flags = {
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.reset_active_high = false
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},
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.vendor_config = nullptr
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};
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*/
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if (esp_lcd_new_panel_st7796(ioHandle, &panel_config, &panelHandle) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to create panel");
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return false;
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}
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if (esp_lcd_panel_reset(panelHandle) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to reset panel");
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return false;
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}
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if (esp_lcd_panel_init(panelHandle) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to init panel");
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return false;
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}
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if (esp_lcd_panel_invert_color(panelHandle, configuration->invertColor) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to set panel to invert");
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return false;
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}
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if (esp_lcd_panel_swap_xy(panelHandle, configuration->swapXY) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to swap XY ");
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return false;
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}
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if (esp_lcd_panel_mirror(panelHandle, configuration->mirrorX, configuration->mirrorY) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to set panel to mirror");
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return false;
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}
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if (esp_lcd_panel_set_gap(panelHandle, configuration->gapX, configuration->gapY) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to set panel gap");
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return false;
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}
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if (esp_lcd_panel_disp_on_off(panelHandle, true) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to turn display on");
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return false;
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}
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uint32_t buffer_size;
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if (configuration->bufferSize == 0) {
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buffer_size = configuration->horizontalResolution * configuration->verticalResolution / 10;
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} else {
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buffer_size = configuration->bufferSize;
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}
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const lvgl_port_display_cfg_t disp_cfg = {
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.io_handle = ioHandle,
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.panel_handle = panelHandle,
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.control_handle = nullptr,
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.buffer_size = buffer_size,
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.double_buffer = false,
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.trans_size = 0,
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.hres = configuration->horizontalResolution,
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.vres = configuration->verticalResolution,
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.monochrome = false,
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.rotation = {
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.swap_xy = configuration->swapXY,
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.mirror_x = configuration->mirrorX,
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.mirror_y = configuration->mirrorY,
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},
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.color_format = LV_COLOR_FORMAT_NATIVE,
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.flags = {.buff_dma = true, .buff_spiram = false, .sw_rotate = false, .swap_bytes = true, .full_refresh = false, .direct_mode = false}
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};
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displayHandle = lvgl_port_add_disp(&disp_cfg);
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TT_LOG_I(TAG, "Finished");
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return displayHandle != nullptr;
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}
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bool St7796Display::stop() {
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assert(displayHandle != nullptr);
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lvgl_port_remove_disp(displayHandle);
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if (esp_lcd_panel_del(panelHandle) != ESP_OK) {
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return false;
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}
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if (esp_lcd_panel_io_del(ioHandle) != ESP_OK) {
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return false;
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}
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displayHandle = nullptr;
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return true;
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}
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void St7796Display::setGammaCurve(uint8_t index) {
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uint8_t gamma_curve;
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switch (index) {
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case 0:
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gamma_curve = 0x01;
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break;
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case 1:
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gamma_curve = 0x04;
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break;
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case 2:
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gamma_curve = 0x02;
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break;
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case 3:
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gamma_curve = 0x08;
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break;
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default:
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return;
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}
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const uint8_t param[] = {
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gamma_curve
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};
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/*if (esp_lcd_panel_io_tx_param(ioHandle , LCD_CMD_GAMSET, param, 1) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to set gamma");
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}*/
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}
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@@ -0,0 +1,103 @@
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#pragma once
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#include "Tactility/hal/display/DisplayDevice.h"
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#include <driver/gpio.h>
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#include <driver/spi_common.h>
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#include <esp_lcd_panel_io.h>
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#include <esp_lcd_types.h>
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#include <functional>
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#include <lvgl.h>
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class St7796Display final : public tt::hal::display::DisplayDevice {
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public:
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class Configuration {
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public:
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Configuration(
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esp_lcd_spi_bus_handle_t spi_bus_handle,
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gpio_num_t csPin,
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gpio_num_t dcPin,
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unsigned int horizontalResolution,
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unsigned int verticalResolution,
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std::shared_ptr<tt::hal::touch::TouchDevice> touch,
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bool swapXY = false,
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bool mirrorX = false,
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bool mirrorY = false,
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bool invertColor = false,
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unsigned int gapX = 0,
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unsigned int gapY = 0,
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uint32_t bufferSize = 0 // Size in pixel count. 0 means default, which is 1/10 of the screen size
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) : spiBusHandle(spi_bus_handle),
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csPin(csPin),
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dcPin(dcPin),
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horizontalResolution(horizontalResolution),
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verticalResolution(verticalResolution),
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swapXY(swapXY),
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mirrorX(mirrorX),
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mirrorY(mirrorY),
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invertColor(invertColor),
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gapX(gapX),
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gapY(gapY),
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bufferSize(bufferSize),
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touch(std::move(touch)) {}
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esp_lcd_spi_bus_handle_t spiBusHandle;
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gpio_num_t csPin;
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gpio_num_t dcPin;
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gpio_num_t resetPin = GPIO_NUM_NC;
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unsigned int pixelClockFrequency = 80'000'000; // Hertz
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size_t transactionQueueDepth = 2;
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unsigned int horizontalResolution;
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unsigned int verticalResolution;
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bool swapXY = false;
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bool mirrorX = false;
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bool mirrorY = false;
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bool invertColor = false;
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unsigned int gapX = 0;
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unsigned int gapY = 0;
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uint32_t bufferSize = 0; // Size in pixel count. 0 means default, which is 1/10 of the screen size
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std::shared_ptr<tt::hal::touch::TouchDevice> touch;
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std::function<void(uint8_t)> _Nullable backlightDutyFunction = nullptr;
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};
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private:
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std::unique_ptr<Configuration> configuration;
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esp_lcd_panel_io_handle_t ioHandle = nullptr;
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esp_lcd_panel_handle_t panelHandle = nullptr;
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lv_display_t* displayHandle = nullptr;
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public:
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explicit St7796Display(std::unique_ptr<Configuration> inConfiguration) : configuration(std::move(inConfiguration)) {
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assert(configuration != nullptr);
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}
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std::string getName() const final { return "ST7796"; }
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std::string getDescription() const final { return "ST7796 display"; }
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bool start() final;
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bool stop() final;
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std::shared_ptr<tt::hal::touch::TouchDevice> _Nullable createTouch() final { return configuration->touch; }
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void setBacklightDuty(uint8_t backlightDuty) final {
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if (configuration->backlightDutyFunction != nullptr) {
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configuration->backlightDutyFunction(backlightDuty);
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}
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}
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void setGammaCurve(uint8_t index) final;
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uint8_t getGammaCurveCount() const final { return 4; };
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bool supportsBacklightDuty() const final { return configuration->backlightDutyFunction != nullptr; }
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lv_display_t* _Nullable getLvglDisplay() const final { return displayHandle; }
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};
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std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay();
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