From 0545586aacc06add477b6df38cd50900698f6d9a Mon Sep 17 00:00:00 2001
From: lonkaars <loek@pipeframe.xyz>
Date: Mon, 3 Apr 2023 16:07:28 +0200
Subject: worky but janky integration done

---
 basys3/basys3.srcs/spi_tb.vhd                      |   1 +
 basys3/basys3.xpr                                  |   4 +-
 src/demo.c                                         | 183 +++++----------------
 src/demo.h                                         |  35 ----
 src/ds.c                                           |   2 +
 src/main.c                                         |  13 +-
 src/makefile                                       |   3 +-
 src/ppu/consts.h                                   |   4 +-
 src/ppu/stm.c                                      |   2 +-
 src/ppusim/mem.c                                   |   2 +-
 src/stm32/main.c                                   |   3 +-
 src/stm32/setup.c                                  |   3 +
 .../test-image-sprites.txt                         | 104 ++++++++++++
 13 files changed, 169 insertions(+), 190 deletions(-)
 create mode 100644 test/ppu-stm-integration-demo/test-image-sprites.txt

diff --git a/basys3/basys3.srcs/spi_tb.vhd b/basys3/basys3.srcs/spi_tb.vhd
index 255f38b..fea96b9 100644
--- a/basys3/basys3.srcs/spi_tb.vhd
+++ b/basys3/basys3.srcs/spi_tb.vhd
@@ -21,6 +21,7 @@ begin
 		RESET => RESET,
 		DO => open,
 		DI => SPI_DATA,
+		SR => '0',
 		DCK => SPI_CLK,
 		WEN => open);
 
diff --git a/basys3/basys3.xpr b/basys3/basys3.xpr
index f90ecdb..852d6c3 100644
--- a/basys3/basys3.xpr
+++ b/basys3/basys3.xpr
@@ -60,7 +60,7 @@
     <Option Name="IPStaticSourceDir" Val="$PIPUSERFILESDIR/ipstatic"/>
     <Option Name="EnableBDX" Val="FALSE"/>
     <Option Name="DSABoardId" Val="basys3"/>
-    <Option Name="WTXSimLaunchSim" Val="118"/>
+    <Option Name="WTXSimLaunchSim" Val="124"/>
     <Option Name="WTModelSimLaunchSim" Val="0"/>
     <Option Name="WTQuestaLaunchSim" Val="0"/>
     <Option Name="WTIesLaunchSim" Val="0"/>
@@ -243,7 +243,7 @@
       </File>
       <Config>
         <Option Name="DesignMode" Val="RTL"/>
-        <Option Name="TopModule" Val="spi_tb"/>
+        <Option Name="TopModule" Val="ppu_tb"/>
         <Option Name="TopLib" Val="xil_defaultlib"/>
         <Option Name="TransportPathDelay" Val="0"/>
         <Option Name="TransportIntDelay" Val="0"/>
diff --git a/src/demo.c b/src/demo.c
index 95347cb..6584719 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -1,154 +1,59 @@
 #include <math.h>
 
 #include "demo.h"
-#include "input.h"
-#include "entity.h"
 #include "ppu/ppu.h"
 
-#include "engine/maths.h"
-#include "engine/camera.h"
-#include "engine/entity.h"
-#include "engine/draw_screen.h"
-#include "engine/player_controller.h"
-#include "engine/sprite_controller.h"
+#include "ppu/internals.h"
 
+#include "../test/ppu-stm-integration-demo/test-image-sprites.h"
 
+#define HH_DEMO_BALL_COUNT 5
+hh_s_ppu_loc_fam_entry g_hh_demo_balls[HH_DEMO_BALL_COUNT];
 
-hh_s_entity_player g_hh_player_1 = {
-	.pos_x		 = 31000, // 0b0000 0001 0011 0110
-	.pos_y		 = 21000,
-	.radius		 = 8,
-	.speed		 = 100,
-	.direction_x = 1,
-	.rotation	 = 8,
-	.in_air		 = false,
-};
-
-void hh_player_movement();
-
-uint16_t g_hh_pos_x; // 0b0000 0001 0011 0110
-uint16_t g_hh_pos_y;
-uint8_t g_hh_left  = 0;
-uint8_t g_hh_right = 0;
-uint8_t g_hh_up	  = 0;
-uint8_t g_hh_down  = 0;
-uint8_t g_hh_pos_x_bit[2];
-uint8_t g_hh_pos_y_bit[2];
-uint8_t g_hh_data_send[3];
-int g_hh_tile_x;
-int g_hh_tile_y;
-
-typedef struct {
-	vec2 pos;
-	uint8_t idx;
-}hh_s_tiles;
-
-
-hh_entity hh_g_player, hh_g_player_new;
 void hh_demo_setup() {
-
-	hh_setup_palettes();
-	hh_setup_screen();
-
-}
-
-void hh_demo_loop(unsigned long frame) {
-
-	// hh_player_movement();
-
-	hh_player_actions();
-
-}
-
-// void sendData(uint8_t address, uint16_t data) {
-// 	uint8_t bitData[3];
-// 	bitData[2] = data & 0xff;
-// 	bitData[1] = (data >> 8);
-// 	bitData[0] = address; // first byte is address
-//
-// 	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
-// 	HAL_SPI_Transmit(&hspi1, bitData, 3, 100); //2*8 bit data
-// 	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
-// }
-
-void hh_player_movement() {
-	int8_t directionX = (-1 * g_hh_controller_p1.dpad_left) + (1 * g_hh_controller_p1.dpad_right); // -1 = L || 1 == R
-	int8_t directionY = (-1 * g_hh_controller_p1.dpad_up) + (1 * g_hh_controller_p1.dpad_down);	   // -1 = D || 1 == U
-
-	uint8_t i, j;
-	uint8_t rotation = 0; // 0-7
-
-	// rotation calc
-	for (i = -1; i < 2; i++) {
-		for (j = -1; j < 2; j++) {
-			if (directionX == i) {
-				if (directionY == j) {
-					if (i != 0 && j != 0) // dont update when player idle
-					{
-						g_hh_player_1.rotation = rotation;
-					}
-				}
-			}
-			rotation++;
-		}
-	}
-	// direction calc
-	if (directionX != 0) // update direction if player is not idle
-	{
-		g_hh_player_1.direction_x = directionX;
+	// load sprites
+	hh_ppu_update_sprite(0, HH_DBG_SPRITE_BALL);
+	hh_ppu_update_sprite(1, HH_DBG_SPRITE_CHECKERBOARD);
+
+	// background pattern
+	hh_ppu_update_color(0, 1, (hh_ppu_rgb_color_t) {0x4, 0x4, 0x4});
+	for (unsigned i = 0; i < HH_PPU_BG_CANVAS_TILES_H * HH_PPU_BG_CANVAS_TILES_V; i++) {
+		hh_ppu_update_background(i, (hh_s_ppu_loc_bam_entry) {
+			.horizontal_flip = false,
+			.vertical_flip = false,
+			.palette_index = 0,
+			.tilemap_index = 1,
+		});
 	}
-	// collision map x-axis
-
-	// tile calc including radius and direction for background coliision
-
-	uint16_t tileColX;
-	uint16_t tileColY = (g_hh_player_1.pos_y / 100) / 16;
-	;
-
-	// remaining space between grid and exact
-	uint8_t modTileX;
-	uint8_t modTileY;
 
-	if (g_hh_player_1.in_air == false && directionX != 0) {
-		if (directionX == 1) {
-			tileColX = ((g_hh_player_1.pos_x / 100) + g_hh_player_1.radius) / 16;
-			modTileX = (g_hh_player_1.pos_x + (100 * g_hh_player_1.radius)) % 1600;
-		} else if (directionX == -1) {
-			tileColX = ((g_hh_player_1.pos_x / 100) - g_hh_player_1.radius) / 16;
-			modTileX = (g_hh_player_1.pos_x - (100 * g_hh_player_1.radius)) % 1600;
-		}
-
-		if (HH_DEMO_HITBOX_TILEMAP[tileColY][tileColX + directionX] != 1) {
-			g_hh_player_1.pos_x = g_hh_player_1.pos_x + (directionX * g_hh_player_1.speed); // NEW x set
-		}
-
-		else if (HH_DEMO_HITBOX_TILEMAP[tileColY][tileColX + directionX] == 1) {
-			if (modTileX < g_hh_player_1.speed) {
-				g_hh_player_1.pos_x = g_hh_player_1.pos_x + (directionX * modTileX); // NEW x set
-			} else {
-				g_hh_player_1.pos_x = g_hh_player_1.pos_x + (directionX * g_hh_player_1.speed); // NEW x set
-			}
-		}
-
-	} else // if in air different all borders have to be checked
-	{
+	// cool colors
+	hh_ppu_update_color(1, 1, (hh_ppu_rgb_color_t) {0xf, 0x0, 0xf});
+	hh_ppu_update_color(2, 1, (hh_ppu_rgb_color_t) {0xf, 0xf, 0xf});
+	hh_ppu_update_color(3, 1, (hh_ppu_rgb_color_t) {0xf, 0x0, 0x0});
+	hh_ppu_update_color(4, 1, (hh_ppu_rgb_color_t) {0x0, 0xf, 0xf});
+	hh_ppu_update_color(5, 1, (hh_ppu_rgb_color_t) {0x0, 0x0, 0xf});
+
+	// balls
+	for (unsigned i = 0; i < HH_DEMO_BALL_COUNT; i++) {
+		g_hh_demo_balls[i].horizontal_flip = false;
+		g_hh_demo_balls[i].vertical_flip = false;
+		g_hh_demo_balls[i].palette_index = i+1;
+		g_hh_demo_balls[i].tilemap_index = 0;
 	}
+}
 
-
-	if(directionY != 0)
-	{
-	//	g_hh_player_1.pos_y = g_hh_player_1.pos_y + (directionY * g_hh_player_1.speed * 2); // NEW x set
-	}
-	// collision map floor (y-axis) (falling)
-	//  if falling no jump press (implement)
-	/*
-	tileColY = (( g_hh_player_1.pos_y / 100) + g_hh_player_1.radius) / 16; //bottom of player box
-	modTileY = 1;
-	if(HH_DEMO_HITBOX_TILEMAP[tileColY+1][tileColX] != 1) //rework after jumping
-	{
-		g_hh_player_1.pos_y = g_hh_player_1.pos_y + 5 ;// NEW y set //makew var gravity
-		//playerStat = falling; //for later use of graphics/sound
+void hh_demo_loop(unsigned long frame) {
+	// set background pattern position
+	hh_ppu_update_aux((hh_s_ppu_loc_aux) {
+		.bg_shift_x = (frame / 2) % HH_PPU_SPRITE_WIDTH,
+		.bg_shift_y = (frame / 8) % HH_PPU_SPRITE_HEIGHT,
+		.fg_fetch = 0,
+		.sysreset = 0,
+	});
+
+	for (unsigned i = 0; i < HH_DEMO_BALL_COUNT; i++) {
+		g_hh_demo_balls[i].position_x = HH_PPU_SCREEN_WIDTH/2  - HH_PPU_SPRITE_WIDTH/2  + (int)(60 * (double)sin((1*(double)frame / 10) + (double)i * 12));
+		g_hh_demo_balls[i].position_y = HH_PPU_SCREEN_HEIGHT/2 - HH_PPU_SPRITE_HEIGHT/2 + (int)(30 * (double)sin((2*(double)frame / 10) + (double)i * 12));
+		hh_ppu_update_foreground(i+16, g_hh_demo_balls[i]);
 	}
-	*/
-	// else if(HH_DEMO_HITBOX_TILEMAP[])
 }
diff --git a/src/demo.h b/src/demo.h
index ddf8403..89436b5 100644
--- a/src/demo.h
+++ b/src/demo.h
@@ -42,38 +42,3 @@ static const hh_s_ppu_loc_sprite HH_DBG_SPRITE_CHECKERBOARD = {
 	0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,
 	0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0
 };
-
-static const uint8_t HH_DEMO_HITBOX_TILEMAP[30][40] =
-  {
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
-		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 }
-  };
-
diff --git a/src/ds.c b/src/ds.c
index 80e947e..570fb61 100644
--- a/src/ds.c
+++ b/src/ds.c
@@ -1,8 +1,10 @@
 #include "main.h"
 #include "ppu/ppu.h"
+#include "demo.h"
 
 void hh_setup() {
 	hh_ppu_init();
+	hh_demo_setup();
 }
 
 void hh_exit() {
diff --git a/src/main.c b/src/main.c
index 658fc94..a3a4351 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,19 +1,16 @@
 #include <stdlib.h>
 
 #include "main.h"
-#include "../test/ppu-stm-integration-demo/data.h"
+#include "demo.h"
+#include "ppu/ppu.h"
 #include "ppu/internals.h"
 
 bool g_hh_run = true;
 
-bool g_hh_test_complete = false;
-
 void hh_ppu_vblank_interrupt() {
-#ifdef HH_TARGET_DESKTOP
-	if (g_hh_test_complete) return;
-#endif
-	hh_ppu_vram_dwrite((uint8_t*) HH_PPUINTDEMO_ARR, HH_PPUINTDEMO_LENGTH);
-	g_hh_test_complete = true;
+	static unsigned long frame = 0;
+	hh_demo_loop(frame++);
+	hh_ppu_vram_flush();
 }
 
 int main() {
diff --git a/src/makefile b/src/makefile
index bbd859e..8ef67b0 100644
--- a/src/makefile
+++ b/src/makefile
@@ -29,7 +29,8 @@ CFLAGS += $(if $(DESKTOP), -DHH_TARGET_DESKTOP, )
 
 LOCAL_SRCS += ppu/internals.c \
 							ppu/ppu.c \
-							main.c
+							main.c \
+							demo.c
 
 CFLAGS += $(SHARED_FLAGS)
 LFLAGS += $(SHARED_FLAGS)
diff --git a/src/ppu/consts.h b/src/ppu/consts.h
index 917510f..4cdd428 100644
--- a/src/ppu/consts.h
+++ b/src/ppu/consts.h
@@ -25,9 +25,9 @@
 
 /** @brief amount of bytes in command (16 + 16 bits) */
 #define HH_PPU_COMMAND_BYTES 4
-/** @brief command buffer size (large enough to update entire screen + all fg sprites + aux + all palettes) */
+/** @brief command buffer size (large enough to update entire screen + all fg sprites + aux + all palettes + 16 for safety) */
 #define HH_PPU_COMMAND_BUFFER_SIZE (HH_PPU_COMMAND_BYTES * \
-		(HH_PPU_VRAM_FAM_SIZE + HH_PPU_VRAM_BAM_SIZE + HH_PPU_VRAM_AUX_SIZE + HH_PPU_VRAM_PAL_SIZE))
+		(HH_PPU_VRAM_FAM_SIZE + HH_PPU_VRAM_BAM_SIZE + HH_PPU_VRAM_AUX_SIZE + HH_PPU_VRAM_PAL_SIZE + 16))
 
 #include "ppu/types.h"
 
diff --git a/src/ppu/stm.c b/src/ppu/stm.c
index 8334090..72e46ae 100644
--- a/src/ppu/stm.c
+++ b/src/ppu/stm.c
@@ -15,7 +15,7 @@ void hh_ppu_vram_dwrite(uint8_t* data, size_t size) {
 		HAL_SPI_Transmit(&hspi1, test, 4, HAL_MAX_DELAY);
 		// HAL_Delay(100);
 	}
-	HAL_SPI_Transmit(&hspi1, (uint8_t[4]){ 0xff }, size, HAL_MAX_DELAY);
+	HAL_SPI_Transmit(&hspi1, (uint8_t[4]){ 0xff }, 4, HAL_MAX_DELAY);
 	// reset SPI
 	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
 	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
diff --git a/src/ppusim/mem.c b/src/ppusim/mem.c
index f536727..06eba4b 100644
--- a/src/ppusim/mem.c
+++ b/src/ppusim/mem.c
@@ -11,7 +11,7 @@ void hh_ppu_vram_dwrite(uint8_t* data, size_t size) {
 		if (i+4 > size) break;
 		hh_ppu_addr_t ppu_addr = (data[i+0] << 8) | (data[i+1] << 0);
 		hh_ppu_data_t ppu_data = (data[i+2] << 8) | (data[i+3] << 0);
-		// printf("%04x: %04x\n", ppu_addr, ppu_data);
+		printf("%04x: %04x\n", ppu_addr, ppu_data);
 		if (!hh_ppu_vram_valid_address(ppu_addr)) continue;
 		g_hh_ppusim_vram[ppu_addr] = ppu_data;
 	}
diff --git a/src/stm32/main.c b/src/stm32/main.c
index d815154..fb548d8 100644
--- a/src/stm32/main.c
+++ b/src/stm32/main.c
@@ -6,8 +6,9 @@
 void hh_ppu_load_tilemap() {}
 
 void hh_loop() {
+	// TODO: call hh_ppu_vblank_interrupt on interrupt instead of manually
 	while (1) {
 		hh_ppu_vblank_interrupt();
-		HAL_Delay(1e3);
+		HAL_Delay(16);
 	}
 }
diff --git a/src/stm32/setup.c b/src/stm32/setup.c
index 4f56535..9de1f48 100644
--- a/src/stm32/setup.c
+++ b/src/stm32/setup.c
@@ -7,6 +7,7 @@
 
 #include "main.h"
 #include "setup.h"
+#include "demo.h"
 #include "ppu/ppu.h"
 
 UART_HandleTypeDef huart2 = {
@@ -73,6 +74,7 @@ void hh_setup() {
 	hh_io_tim_setup();
 
 	hh_ppu_init();
+	hh_demo_setup();
 }
 
 void hh_exit() {
@@ -150,6 +152,7 @@ void hh_io_gpio_setup() {
 void HAL_MspInit() {
   __HAL_RCC_SYSCFG_CLK_ENABLE();
   __HAL_RCC_PWR_CLK_ENABLE();
+	HAL_NVIC_SetPriority(PendSV_IRQn, 3, 0);
 }
 
 void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi) {
diff --git a/test/ppu-stm-integration-demo/test-image-sprites.txt b/test/ppu-stm-integration-demo/test-image-sprites.txt
new file mode 100644
index 0000000..82131e0
--- /dev/null
+++ b/test/ppu-stm-integration-demo/test-image-sprites.txt
@@ -0,0 +1,104 @@
+0000: 0000
+0001: 1249
+0002: 0001
+0003: 1000
+0004: 1249
+0005: 0249
+0006: 1000
+0007: 1249
+0008: 1249
+0009: 1001
+000a: 1249
+000b: 1249
+000c: 0049
+000d: 1249
+000e: 1249
+000f: 0249
+0010: 1249
+0011: 1249
+0012: 1249
+0013: 1249
+0014: 1249
+0015: 1249
+0016: 1249
+0017: 1249
+0018: 1249
+0019: 1249
+001a: 1249
+001b: 1249
+001c: 1249
+001d: 1249
+001e: 0249
+001f: 1249
+0020: 1249
+0021: 1249
+0022: 1241
+0023: 1241
+0024: 0049
+0025: 1000
+0026: 1201
+0027: 1249
+0028: 1049
+0029: 0009
+002a: 1249
+002b: 1049
+002c: 0009
+002d: 1240
+002e: 1249
+002f: 0009
+0030: 0000
+0031: 1249
+0032: 0001
+0033: 0000
+0034: 0001
+0035: 0208
+0036: 1000
+0037: 0000
+0038: 0200
+0039: 0000
+003a: 0048
+003b: 0200
+003c: 0001
+003d: 1008
+003e: 0200
+003f: 0040
+0040: 0008
+0041: 0208
+0042: 1000
+0043: 0008
+0044: 0200
+0045: 0000
+0046: 0008
+0047: 0200
+0048: 0001
+0049: 0208
+004a: 0200
+004b: 0040
+004c: 0008
+004d: 0201
+004e: 1000
+004f: 0008
+0050: 0040
+0051: 0000
+0052: 0008
+0053: 1000
+0054: 0001
+0055: 0208
+0056: 1000
+0057: 0040
+0058: 0008
+0059: 1001
+005a: 1000
+005b: 0008
+005c: 1040
+005d: 0000
+005e: 0008
+005f: 1000
+0060: 0000
+0061: 0208
+0062: 1000
+0063: 0008
+0064: 0008
+0065: 1001
+0066: 0200
+0067: 0000
-- 
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