SDK: Refactor game loop, add stats.

.flake8

@@ -0,0 +1,213 @@
+[flake8]
+ignore =
+    E501,
+    F405,
+    F403
+builtins =
+    Buffer,
+    Voice,
+    pen,
+    tick,
+    init,
+    reset,
+    play,
+    clip,
+    blend,
+    target,
+    camera,
+    spritesheet,
+    clear,
+    pixel,
+    line,
+    hline,
+    vline,
+    rect,
+    frect,
+    circle,
+    fcircle,
+    ellipse,
+    fellipse,
+    poly,
+    fpoly,
+    blit,
+    sprite,
+    text,
+    text_width,
+    rgb,
+    hsv,
+    intersects,
+    intersection,
+    contains,
+    pressed,
+    button,
+    battery,
+    led,
+    backlight,
+    UP,
+    DOWN,
+    LEFT,
+    RIGHT,
+    A,
+    B,
+    X,
+    Y,
+    COPY,
+    ALPHA,
+    MASK,
+    CHERRY,
+    APPLE,
+    BANANA,
+    ORANGE,
+    AUBERGINE,
+    CARROT,
+    POTATO,
+    LEAF,
+    PARSNIP,
+    MEAT,
+    BEAN,
+    RADISH,
+    STRAWBERRY,
+    PUMPKIN,
+    CUCUMBER,
+    SALT1,
+    SWORD1,
+    SWORD2,
+    SWORD3,
+    AXE1,
+    DAGGER,
+    MACE1,
+    BOW,
+    ARROW1,
+    ARROW2,
+    ARROW3,
+    TRIDENT1,
+    SPEAR,
+    TRIDENT2,
+    MACHINEGUN,
+    PISTOL,
+    SHOTGUN,
+    GEM1,
+    GEM2,
+    GEM3,
+    GEM4,
+    GEM5,
+    GEM6,
+    AMULET,
+    FOLDER,
+    COIN1,
+    IDOL1,
+    IDOL2,
+    IDOL3,
+    IDOL4,
+    SWEETCORN,
+    BROCCOLI,
+    BISCUIT,
+    BERRIES,
+    SCEPTRE,
+    FIRE,
+    LASERGUN1,
+    LASERGUN2,
+    HELMET1,
+    HELMET2,
+    HELMET3,
+    HELMET4,
+    __1,
+    __2,
+    __3,
+    __4,
+    HEART1,
+    SLIME,
+    COIN2,
+    SWORD4,
+    SWORD5,
+    __5,
+    DYNAMITE,
+    MEDPACK,
+    GOGGLES,
+    HELMET5,
+    BOMB,
+    OILCAN,
+    SHIRT1,
+    SHIRT2,
+    SPEECH,
+    DREAM,
+    HEART2,
+    HEART3,
+    HEART4,
+    __6,
+    TORCH,
+    ICE,
+    __7,
+    __8,
+    __9,
+    __10,
+    UPARROW,
+    RING1,
+    RING2,
+    RING3,
+    RING4,
+    __11,
+    TOKEN,
+    VIAL1,
+    VIAL2,
+    RING5,
+    RING6,
+    BLOCK1,
+    BLOCK2,
+    BLOCK3,
+    BLOCK4,
+    BLOCK5,
+    BLOCK6,
+    BLOCK7,
+    BLOCK8,
+    BLOCK9,
+    SHIELD1,
+    SACK,
+    BUTTON,
+    VIAL3,
+    VIAL4,
+    TOOTH,
+    BONE,
+    HALFBLOCK1,
+    HALFBLOCK2,
+    HALFBLOCK3,
+    HALFBLOCK4,
+    HALFBLOCK5,
+    HALFBLOCK6,
+    HALFBLOCK7,
+    HALFBLOCK8,
+    HALFBLOCK9,
+    SHIELD2,
+    SHIELD3,
+    FLOWER1,
+    FLOWER2,
+    FLOWER3,
+    FLOWER4,
+    STAFF1,
+    STAFF2,
+    STAFF3,
+    STICK1,
+    SPIKEBALL,
+    MACE2,
+    AXE2,
+    __12,
+    SWORD6,
+    SWORD7,
+    SWORD8,
+    CROWN1,
+    GOLD,
+    GEM7,
+    GEM8,
+    GEM9,
+    AXE3,
+    MUSHROOM,
+    SALT2,
+    STICK2,
+    VIAL5,
+    VIAL6,
+    DOT,
+    HELMET6,
+    SWORD9,
+    SWORD10,
+    SWORD11,
+    CROWN2,

.github/workflows/python.yml

@@ -32,5 +32,5 @@ jobs:
     - name: Lint
       shell: bash
       run: |
-        python3 -m flake8 --ignore E501,F405,F821,F403 micropython/examples
-        python3 -m flake8 --ignore E501,F405,F821,F403,F401 micropython/modules_py
+        python3 -m flake8 micropython/examples
+        python3 -m flake8 --ignore E501,F405,F403,F401 micropython/modules_py

examples/audio/audio.cpp

@@ -151,7 +151,7 @@ void draw_dial(std::string name, int32_t x, int32_t y) {
 }
 
 // draw the world
-void draw() {
+void draw(uint32_t tick) {
   // draw top row of dials
   pen(10, 12, 4);
   frect(0, 60, 240, 60);

examples/colour/colour.cpp

@@ -108,7 +108,7 @@ void draw_slider(slider_t &slider, int32_t x, int32_t y) {
   frect(x + 2, y + h - sh - 2, w - 4, sh);
 }
 
-void draw() {
+void draw(uint32_t tick) {
   // clear the screen
   pen(1, 1, 1);
   clear();

examples/music/music.cpp

@@ -133,7 +133,7 @@ void update(uint32_t tick) {
 }
 
 // draw the world
-void draw() {
+void draw(uint32_t tick) {
   // reset the camera and clear the framebuffer
   camera();
   pen(1, 2, 3);

examples/shapes/shapes.cpp

@@ -61,7 +61,7 @@ void label(std::string s) {
   text(s + ":", 2, 15);
 }
 
-void draw() {
+void draw(uint32_t tick) {
   pen(0, 0, 0);
   clear();
 
@@ -147,4 +147,14 @@ void draw() {
   frect(0, 0, 120, 11);
   pen(0, 0, 0);
   text("Shapes Test", 2, 2);
+
+  pen(0, 0, 0, 8);
+  frect(0, 60, 120, 60);
+
+  pen(15, 15, 15);
+  text("fps: " + str(stats.fps), 10, 70);
+  text("draw us: " + str(stats.draw_us), 10, 80);
+  text("update us: " + str(stats.update_us), 10, 90);
+  text("tick us: " + str(stats.tick_us), 10, 100);
+  text("idle: " + str(stats.idle) + "%", 10, 110);
 }

examples/snake/snake.cpp

@@ -124,7 +124,7 @@ void update(uint32_t tick) {
 }
 
 // draw the world
-void draw() {
+void draw(uint32_t tick) {
   // clear the screen in noxious 3310 backlight green and draw everything in
   // a faint blended black to get that cheap 90s LCD feel
   pen(10, 12, 0);

examples/sprites/sprites.cpp

@@ -54,7 +54,7 @@ float deg_to_rad(float d) {
 }
 
 // draw the world
-void draw() {
+void draw(uint32_t tick) {
   // clear the background
   pen(2, 3, 4);
   clear();

examples/text/text.cpp

@@ -11,7 +11,7 @@ void update(uint32_t tick) {
   wrap_width = (fsin(time() / 1000.0f) * 40.0f) + 76;
 }
 
-void draw() {
+void draw(uint32_t tick) {
   pen(0, 0, 0);
   clear();
 

libraries/hardware.cpp

@@ -300,7 +300,6 @@ namespace picosystem {
     #ifndef NO_OVERCLOCK
       // overclock the rp2040 to 250mhz
       set_sys_clock_khz(250000, true);
-
     #endif
 
     // configure control io pins
@@ -366,7 +365,7 @@ namespace picosystem {
     _screen_command(VRHS,      1, "\x12");
     _screen_command(VDVS,      1, "\x20");
     _screen_command(PWRCTRL1,  2, "\xA4\xA1");
-    _screen_command(FRCTRL2,   1, "\x0f");
+    _screen_command(FRCTRL2,   1, "\x15");
     _screen_command(GMCTRP1,  14, "\xD0\x04\x0D\x11\x13\x2B\x3F\x54\x4C\x18\x0D\x0B\x1F\x23");
     _screen_command(GMCTRN1,  14, "\xD0\x04\x0C\x11\x13\x2C\x3F\x44\x51\x2F\x1F\x1F\x20\x23");
     _screen_command(INVON);
@@ -399,7 +398,7 @@ namespace picosystem {
 
     // initialise dma channel for transmitting pixel data to screen
     // via the screen updating pio program
-    dma_channel = 0; //dma_claim_unused_channel(true); // avoid MicroPython soft-reset timebomb
+    dma_channel = 0;
     dma_channel_config config = dma_channel_get_default_config(dma_channel);
     channel_config_set_bswap(&config, true);
     channel_config_set_dreq(&config, pio_get_dreq(screen_pio, screen_sm, true));