Feature/40 brightness controls

components/box-emu-hal/include/spi_lcd.h

@@ -36,6 +36,8 @@ uint8_t* get_frame_buffer0();
 uint8_t* get_frame_buffer1();
 void lcd_write_frame(const uint16_t x, const uint16_t y, const uint16_t width, const uint16_t height, const uint8_t *data);
 void lcd_init();
+void set_display_brightness(float brightness);
+float get_display_brightness();
 
 #ifdef __cplusplus
 }

components/box-emu-hal/include/statistics.hpp

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <algorithm>
+#include <atomic>
+
+void update_frame_time(float frame_time);
+void reset_frame_time();
+
+float get_fps();
+float get_frame_time();
+float get_frame_time_max();
+float get_frame_time_min();
+float get_frame_time_avg();

components/box-emu-hal/src/hal_i2c.cpp

@@ -9,17 +9,33 @@ using namespace box_hal;
 
 void i2c_init() {
   if (initialized) return;
-  internal_i2c = std::make_shared<espp::I2c>(espp::I2c::Config{
-      .port = internal_i2c_port,
-      .sda_io_num = internal_i2c_sda,
-      .scl_io_num = internal_i2c_scl,
-      .sda_pullup_en = GPIO_PULLUP_ENABLE,
-      .scl_pullup_en = GPIO_PULLUP_ENABLE});
-  external_i2c = std::make_shared<espp::I2c>(espp::I2c::Config{
-      .port = external_i2c_port,
-      .sda_io_num = external_i2c_sda,
-      .scl_io_num = external_i2c_scl,
-      .sda_pullup_en = GPIO_PULLUP_ENABLE,
-      .scl_pullup_en = GPIO_PULLUP_ENABLE});
+  // make the i2c on core 1 so that the i2c interrupts are handled on core 1
+  std::atomic<bool> i2c_initialized = false;
+  auto i2c_task = espp::Task::make_unique(espp::Task::Config{
+      .name = "i2c",
+        .callback = [&](auto &m, auto&cv) -> bool {
+          internal_i2c = std::make_shared<espp::I2c>(espp::I2c::Config{
+              .port = internal_i2c_port,
+              .sda_io_num = internal_i2c_sda,
+              .scl_io_num = internal_i2c_scl,
+              .sda_pullup_en = GPIO_PULLUP_ENABLE,
+              .scl_pullup_en = GPIO_PULLUP_ENABLE});
+          external_i2c = std::make_shared<espp::I2c>(espp::I2c::Config{
+              .port = external_i2c_port,
+              .sda_io_num = external_i2c_sda,
+              .scl_io_num = external_i2c_scl,
+              .sda_pullup_en = GPIO_PULLUP_ENABLE,
+              .scl_pullup_en = GPIO_PULLUP_ENABLE});
+          i2c_initialized = true;
+        return true; // stop the task
+      },
+      .stack_size_bytes = 2*1024,
+      .core_id = 1
+    });
+  i2c_task->start();
+  while (!i2c_initialized) {
+    std::this_thread::sleep_for(std::chrono::milliseconds(10));
+  }
+
   initialized = true;
 }

components/box-emu-hal/src/i2s_audio.cpp

@@ -189,9 +189,19 @@ static void init_mute_button(void) {
   // restarted without power loss)
   set_muted(!gpio_get_level(mute_pin));
 
-  //install gpio isr service
-  gpio_install_isr_service(0);
-  gpio_isr_handler_add(mute_pin, gpio_isr_handler, (void*) mute_pin);
+  // create a task on core 1 for initializing the gpio interrupt so that the
+  // gpio ISR runs on core 1
+  auto gpio_task = espp::Task::make_unique(espp::Task::Config{
+      .name = "gpio",
+        .callback = [](auto &m, auto&cv) -> bool {
+          gpio_install_isr_service(0);
+          gpio_isr_handler_add(mute_pin, gpio_isr_handler, (void*) mute_pin);
+          return true; // stop the task
+        },
+      .stack_size_bytes = 2*1024,
+      .core_id = 1
+    });
+  gpio_task->start();
 
   // register that we publish the mute button state
   espp::EventManager::get().add_publisher(mute_button_topic, "i2s_audio");

components/box-emu-hal/src/spi_lcd.cpp

@@ -77,12 +77,18 @@ extern "C" void lcd_write(const uint8_t *data, size_t length, uint32_t user_data
     }
     lcd_wait_lines();
     esp_err_t ret;
+    memset(&trans[0], 0, sizeof(spi_transaction_t));
     trans[0].length = length * 8;
     trans[0].user = (void*)user_data;
-    trans[0].tx_buffer = data;
-    trans[0].flags = 0; // maybe look at the length of data (<=32 bits) and see
-                        // if we should use SPI_TRANS_USE_TXDATA and copy the
-                        // data into the tx_data field
+    // look at the length of the data and use tx_data if it is <= 32 bits
+    if (length <= 4) {
+        // copy the data pointer to trans[0].tx_data
+        memcpy(trans[0].tx_data, data, length);
+        trans[0].flags = SPI_TRANS_USE_TXDATA;
+    } else {
+        trans[0].tx_buffer = data;
+        trans[0].flags = 0;
+    }
     ret = spi_device_queue_trans(spi, &trans[0], 10 / portTICK_PERIOD_MS);
     if (ret != ESP_OK) {
         fmt::print("Couldn't queue trans: {} '{}'\n", ret, esp_err_to_name(ret));
@@ -143,7 +149,7 @@ extern "C" void lcd_send_lines(int xs, int ys, int xe, int ye, const uint8_t *da
     //transactions sent. That happens mostly using DMA, so the CPU doesn't have
     //much to do here. We're not going to wait for the transaction to finish
     //because we may as well spend the time calculating the next line. When that
-    //is done, we can call send_line_finish, which will wait for the transfers
+    //is done, we can call lcd_wait_lines, which will wait for the transfers
     //to be done and check their status.
 }
 
@@ -196,7 +202,7 @@ extern "C" void lcd_init() {
     buscfg.sclk_io_num = lcd_sclk;
     buscfg.quadwp_io_num = -1;
     buscfg.quadhd_io_num = -1;
-    buscfg.max_transfer_sz = pixel_buffer_size * sizeof(lv_color_t) + 10;
+    buscfg.max_transfer_sz = frame_buffer_size * sizeof(lv_color_t) + 10;
 
     memset(&devcfg, 0, sizeof(devcfg));
     devcfg.mode = 0;
@@ -220,8 +226,6 @@ extern "C" void lcd_init() {
             .lcd_send_lines = lcd_send_lines,
             .reset_pin = lcd_reset,
             .data_command_pin = lcd_dc,
-            .backlight_pin = backlight,
-            .backlight_on_value = backlight_value,
             .reset_value = reset_value,
             .invert_colors = invert_colors,
             .mirror_x = mirror_x,
@@ -234,6 +238,8 @@ extern "C" void lcd_init() {
             .height = display_height,
             .pixel_buffer_size = pixel_buffer_size,
             .flush_callback = DisplayDriver::flush,
+            .backlight_pin = backlight,
+            .backlight_on_value = backlight_value,
             .update_period = 5ms,
             .double_buffered = true,
             .allocation_flags = MALLOC_CAP_8BIT | MALLOC_CAP_DMA,
@@ -245,3 +251,11 @@ extern "C" void lcd_init() {
     frame_buffer1 = (uint8_t*)heap_caps_malloc(frame_buffer_size, MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM);
     initialized = true;
 }
+
+extern "C" void set_display_brightness(float brightness) {
+    display->set_brightness(brightness);
+}
+
+extern "C" float get_display_brightness() {
+    return display->get_brightness();
+}

components/box-emu-hal/src/statistics.cpp

@@ -0,0 +1,51 @@
+#include "statistics.hpp"
+
+static uint32_t num_frames = 0;
+static float frame_time = 0.0f;
+static float frame_time_total = 0.0f;
+static float frame_time_max = 0.0f;
+static float frame_time_min = 0.0f;
+static float frame_time_avg = 0.0f;
+
+void update_frame_time(float frame_time)
+{
+    num_frames++;
+    ::frame_time = frame_time;
+    frame_time_total = frame_time_total + frame_time;
+    frame_time_max = std::max(frame_time_max, frame_time);
+    frame_time_min = std::min(frame_time_min, frame_time);
+    frame_time_avg = frame_time_total / num_frames;
+}
+
+void reset_frame_time()
+{
+    num_frames = 0;
+    frame_time = 0.0f;
+    frame_time_total = 0.0f;
+    frame_time_max = 0.0f;
+    frame_time_min = 100000.0f; // some large number
+    frame_time_avg = 0.0f;
+}
+
+float get_fps() {
+    if (frame_time_total == 0.0f) {
+        return 0.0f;
+    }
+    return num_frames / frame_time_total;
+}
+
+float get_frame_time() {
+    return frame_time;
+}
+
+float get_frame_time_max() {
+    return frame_time_max;
+}
+
+float get_frame_time_min() {
+    return frame_time_min;
+}
+
+float get_frame_time_avg() {
+    return frame_time_avg;
+}

components/gbc/src/gameboy.cpp

@@ -5,6 +5,7 @@
 #include <memory>
 
 #include "fs_init.hpp"
+#include "statistics.hpp"
 
 #include "format.hpp"
 #include "spi_lcd.h"
@@ -58,7 +59,6 @@ extern "C" void die(char *fmt, ...) {
 static std::shared_ptr<espp::Task> gbc_task;
 static std::shared_ptr<espp::Task> gbc_video_task;
 static QueueHandle_t video_queue;
-static float totalElapsedSeconds = 0;
 static struct InputState state;
 
 static std::atomic<bool> scaled = false;
@@ -182,10 +182,7 @@ bool run_to_vblank(std::mutex &m, std::condition_variable& cv) {
   ++frame;
   auto end = std::chrono::high_resolution_clock::now();
   auto elapsed = std::chrono::duration<float>(end-start).count();
-  totalElapsedSeconds += elapsed;
-  if ((frame % 60) == 0) {
-    fmt::print("gameboy: FPS {}\n", (float) frame / totalElapsedSeconds);
-  }
+  update_frame_time(elapsed);
   // frame rate should be 60 FPS, so 1/60th second is what we want to sleep for
   static constexpr auto delay = std::chrono::duration<float>(1.0f/60.0f);
   std::this_thread::sleep_until(start + delay);
@@ -245,7 +242,6 @@ void init_gameboy(const std::string& rom_filename, uint8_t *romdata, size_t rom_
 
   loader_init(romdata, rom_data_size);
   emu_reset();
-  totalElapsedSeconds = 0;
   frame = 0;
   if (!initialized) {
     gbc_task = std::make_shared<espp::Task>(espp::Task::Config{
@@ -265,6 +261,7 @@ void init_gameboy(const std::string& rom_filename, uint8_t *romdata, size_t rom_
     video_queue = xQueueCreate(1, sizeof(uint16_t*));
   }
   initialized = true;
+  reset_frame_time();
 }
 
 void run_gameboy_rom() {

components/gui/.gitignore

@@ -0,0 +1 @@
+squareline/autosave

components/gui/CMakeLists.txt

@@ -1,5 +1,5 @@
 idf_component_register(
-  SRC_DIRS "src" "generated"
+  SRC_DIRS "src" "generated" "generated/screens" "generated/components"
   INCLUDE_DIRS "include"
   PRIV_INCLUDE_DIRS "generated"
   REQUIRES lvgl task display logger jpeg box-emu-hal)

components/gui/generated/CMakeLists.txt

@@ -0,0 +1,7 @@
+SET(SOURCES screens/ui_romscreen.c
+    screens/ui_settingsscreen.c
+    ui.c
+    components/ui_comp_hook.c
+    ui_helpers.c)
+
+add_library(ui ${SOURCES})

components/gui/generated/components/ui_comp_hook.c

@@ -0,0 +1,5 @@
+// This file was generated by SquareLine Studio
+// SquareLine Studio version: SquareLine Studio 1.3.3
+// LVGL version: 8.3.3
+// Project name: emu
+

components/gui/generated/filelist.txt

@@ -0,0 +1,5 @@
+screens/ui_romscreen.c
+screens/ui_settingsscreen.c
+ui.c
+components/ui_comp_hook.c
+ui_helpers.c

components/gui/generated/screens/ui_romscreen.c

@@ -0,0 +1,74 @@
+// This file was generated by SquareLine Studio
+// SquareLine Studio version: SquareLine Studio 1.3.3
+// LVGL version: 8.3.3
+// Project name: emu
+
+#include "../ui.h"
+
+void ui_romscreen_screen_init(void)
+{
+ui_romscreen = lv_obj_create(NULL);
+lv_obj_clear_flag( ui_romscreen, LV_OBJ_FLAG_SCROLLABLE );    /// Flags
+
+ui_header = lv_obj_create(ui_romscreen);
+lv_obj_set_height( ui_header, 75);
+lv_obj_set_width( ui_header, lv_pct(100));
+lv_obj_set_align( ui_header, LV_ALIGN_TOP_MID );
+lv_obj_clear_flag( ui_header, LV_OBJ_FLAG_SCROLLABLE );    /// Flags
+
+ui_settingsbutton = lv_btn_create(ui_header);
+lv_obj_set_width( ui_settingsbutton, 48);
+lv_obj_set_height( ui_settingsbutton, 48);
+lv_obj_set_align( ui_settingsbutton, LV_ALIGN_LEFT_MID );
+lv_obj_add_flag( ui_settingsbutton, LV_OBJ_FLAG_SCROLL_ON_FOCUS );   /// Flags
+lv_obj_clear_flag( ui_settingsbutton, LV_OBJ_FLAG_SCROLLABLE );    /// Flags
+
+ui_Screen1_Label2 = lv_label_create(ui_settingsbutton);
+lv_obj_set_width( ui_Screen1_Label2, LV_SIZE_CONTENT);  /// 1
+lv_obj_set_height( ui_Screen1_Label2, LV_SIZE_CONTENT);   /// 1
+lv_obj_set_align( ui_Screen1_Label2, LV_ALIGN_CENTER );
+lv_label_set_text(ui_Screen1_Label2,LV_SYMBOL_SETTINGS);
+
+ui_Screen1_Label1 = lv_label_create(ui_header);
+lv_obj_set_width( ui_Screen1_Label1, LV_SIZE_CONTENT);  /// 1
+lv_obj_set_height( ui_Screen1_Label1, LV_SIZE_CONTENT);   /// 1
+lv_obj_set_align( ui_Screen1_Label1, LV_ALIGN_CENTER );
+lv_label_set_text(ui_Screen1_Label1,"Select Rom");
+
+ui_playbutton = lv_btn_create(ui_header);
+lv_obj_set_width( ui_playbutton, 48);
+lv_obj_set_height( ui_playbutton, 48);
+lv_obj_set_align( ui_playbutton, LV_ALIGN_RIGHT_MID );
+lv_obj_add_state( ui_playbutton, LV_STATE_CHECKED );     /// States
+lv_obj_add_flag( ui_playbutton, LV_OBJ_FLAG_SCROLL_ON_FOCUS );   /// Flags
+lv_obj_clear_flag( ui_playbutton, LV_OBJ_FLAG_SCROLLABLE );    /// Flags
+
+ui_Screen1_Label3 = lv_label_create(ui_playbutton);
+lv_obj_set_width( ui_Screen1_Label3, LV_SIZE_CONTENT);  /// 1
+lv_obj_set_height( ui_Screen1_Label3, LV_SIZE_CONTENT);   /// 1
+lv_obj_set_align( ui_Screen1_Label3, LV_ALIGN_CENTER );
+lv_label_set_text(ui_Screen1_Label3,LV_SYMBOL_PLAY);
+
+ui_rompanel = lv_obj_create(ui_romscreen);
+lv_obj_set_width( ui_rompanel, 220);
+lv_obj_set_height( ui_rompanel, 165);
+lv_obj_set_align( ui_rompanel, LV_ALIGN_BOTTOM_LEFT );
+lv_obj_add_flag( ui_rompanel, LV_OBJ_FLAG_SCROLL_ON_FOCUS | LV_OBJ_FLAG_SCROLL_ONE );   /// Flags
+lv_obj_set_scroll_dir(ui_rompanel, LV_DIR_VER);
+
+ui_boxartpanel = lv_obj_create(ui_romscreen);
+lv_obj_set_width( ui_boxartpanel, 100);
+lv_obj_set_height( ui_boxartpanel, 165);
+lv_obj_set_align( ui_boxartpanel, LV_ALIGN_BOTTOM_RIGHT );
+lv_obj_clear_flag( ui_boxartpanel, LV_OBJ_FLAG_SCROLLABLE );    /// Flags
+
+ui_boxart = lv_img_create(ui_boxartpanel);
+lv_obj_set_width( ui_boxart, 100);
+lv_obj_set_height( ui_boxart, LV_SIZE_CONTENT);   /// 1
+lv_obj_set_align( ui_boxart, LV_ALIGN_CENTER );
+lv_obj_add_flag( ui_boxart, LV_OBJ_FLAG_ADV_HITTEST );   /// Flags
+lv_obj_clear_flag( ui_boxart, LV_OBJ_FLAG_SCROLLABLE );    /// Flags
+
+lv_obj_add_event_cb(ui_settingsbutton, ui_event_settingsbutton, LV_EVENT_ALL, NULL);
+
+}