MicroPython: Fix macOS bug, _logo for launcher.

.flake8

@@ -9,7 +9,8 @@ builtins =
     pen,
     tick,
     init,
-    reset,
+    _reset,
+    _logo,
     play,
     clip,
     blend,

micropython/examples/picosystem/launcher.py

@@ -1,7 +1,9 @@
-import os
-import math
-import time
-import gc
+backlight(0)
+
+import os    # noqa: E402
+import math  # noqa: E402
+import time  # noqa: E402
+import gc    # noqa: E402
 
 
 last_note = 0
@@ -11,7 +13,7 @@
 
 
 notes = [
-    (None, 100), ("G6", 10), ("E6", 30), ("A6", 10), ("G6", 30), (None, 100), ("B7", 1), ("C7", 1)
+    (None, 100), ("G6", 10), ("E6", 30), ("A6", 10), ("G6", 30), (None, 50), ("B7", 1), ("C7", 1)
 ]
 intro = Voice()
 intro.envelope(attack=50, decay=10, sustain=70, release=2000)
@@ -76,6 +78,9 @@ def update(tick):
     selected %= filecount
     target_angle = -get_item_angle(selected)
 
+    if tick <= 75:
+        backlight(tick)
+
 
 def draw(tick):
     global current_angle, intro_melody
@@ -86,9 +91,10 @@ def draw(tick):
 
     if intro_melody:
         pen(15, 15, 15)
+        _logo()
         label = "".join(["", "Pi", "co", "Sys", "tem"][0:min(note_idx, 5)])
         label_width = text_width(label)
-        text(label, int(60 - (label_width / 2)), 60)
+        text(label, int(60 - (label_width / 2)), 90)
         return
 
     pen(10, 10, 10)
@@ -134,5 +140,5 @@ def draw(tick):
         del locals()[k]
 
 gc.collect()
-reset()
+_reset()
 __import__(__launch_file__)

micropython/modules/picosystem/picosystem.c

@@ -68,6 +68,7 @@ const mp_obj_type_t PicosystemVoice_type = {
 MP_DEFINE_CONST_FUN_OBJ_0(picosystem_init_obj, picosystem_init);
 MP_DEFINE_CONST_FUN_OBJ_0(picosystem_reset_obj, picosystem_reset);
 MP_DEFINE_CONST_FUN_OBJ_0(picosystem_tick_obj, picosystem_tick);
+MP_DEFINE_CONST_FUN_OBJ_0(picosystem_logo_obj, picosystem_logo);
 
 // stats.cpp
 

micropython/modules/picosystem/picosystem.cpp

@@ -33,7 +33,7 @@ uint32_t last_ms = time();
 
 uint32_t tick = 0;
 
-static bool done_splash = false;
+static bool done_audio_init = false;
 
 mp_obj_t update_callback_obj = mp_const_none;
 mp_obj_t draw_callback_obj = mp_const_none;
@@ -62,6 +62,23 @@ mp_obj_t picosystem_reset() {
     return mp_const_none;
 }
 
+mp_obj_t picosystem_logo() {
+    const uint8_t *s = _picosystem_logo;
+
+    for(int y = 35; y < 85; y++) {
+        for(int x = 19; x < 101; x+=8) {
+            for(int bit = 0; bit < 8; bit++) {
+                if(*s & (0b10000000 >> bit)) {
+                    pixel(x + bit, y);
+                }
+            }
+            s++;
+        }
+    }
+
+    return mp_const_none;
+}
+
 mp_obj_t picosystem_init() {
 
     MP_STATE_PORT(picosystem_framebuffer) = m_new(color_t, 120 * 120);
@@ -78,41 +95,27 @@ mp_obj_t picosystem_init() {
         _fsin_lut[i] = sin((_PI * 2.0f) * (float(i) / 256.0f));
     }
 
-    if(!done_splash) { // Squash splash on soft-reset. It's painful!
+    if(!done_audio_init) {
         _start_audio(); // HACK! we really should figure out *what* soft-reset rp2_pio_deinit and machine_pin_deinit is breaking
 
         // Set the LED to green, just for gentle reassurance
-        led(0, 128, 0);
-
-#ifndef NO_STARTUP_LOGO
-        // fade in logo by ramping up backlight
-        pen(0, 0, 0); clear();
-        pen(15, 15, 15); _logo();
-        for(int i = 0; i < 75; i++) {
-            backlight(i);
-            _wait_vsync();
-            _flip();
-        }
-
-        sleep(300); // ...and breathe out...
-
-        // fade out logo in 16 colour steps
-        for(int i = 15; i >= 0; i--) {
-            pen(0, 0, 0); clear();
-            pen(i, i, i); _logo();
-            _wait_vsync();
-            _flip();
-
-            sleep(20);
-        }
-#endif
-        done_splash = true;
+        led(0, 64, 0);
+
+        done_audio_init = true;
     }
-    backlight(75);
 
-    sleep(300);
+    // Keep the screen off...
+    backlight(0);
+    // Screen buffer is initialized clear; just flip it.
+    _flip();
+    // Wait for the DMA transfer to finish
+    while (_is_flipping());
+    // wait for the screen to update
+    _wait_vsync();
+    _wait_vsync();
 
-    pen(0, 0, 0); clear();
+    // Turn the screen on
+    backlight(75);
 
     // call users init() function so they can perform any needed
     // setup for world state etc

micropython/modules/picosystem/picosystem.h

@@ -56,6 +56,7 @@ extern const mp_obj_type_t PicosystemVoice_type;
 extern mp_obj_t picosystem_init();
 extern mp_obj_t picosystem_tick();
 extern mp_obj_t picosystem_reset();
+extern mp_obj_t picosystem_logo();
 
 // stats.cpp
 extern mp_obj_t picosystem_stats();