Finding ESP32-S3 Components

/* ESP32-S3 (WROOM-1-N16R8) — STABLE SMOOTH STICKS + LittleFS + Audio + 2x74HC595

TFT_eSPI (ILI9488)
LittleFS label: "littlefs"
RAW565 screens from LittleFS
MAX98357 I2S plays /go.wav (scheduled 1.5s after press)
Falling sticks idle screen with PSRAM background cache
NO sprites, NO dynamic alloc per frame -> avoids trails/inverted artefacts on ILI9488 SPI */

#include #include #include #include using fs::File;

#include "esp_heap_caps.h"

/* ===== ESP8266Audio (works on ESP32-S3) ===== */ #include "AudioFileSourceFS.h" #include "AudioGeneratorWAV.h" #include "AudioOutputI2S.h"

/* ================= PINS ================= */

#define BUTTON_START 21 // INPUT_PULLUP -> press to GND

// 74HC595 control (SAFE pins) #define SR_DATA 15 #define SR_CLOCK 16 #define SR_LATCH 17

// I2S pins (SAFE pins) #define I2S_BCLK 4 #define I2S_LRCLK 5 #define I2S_DIN 6

/* ================= CONSTANTS ================= */

#define SCREEN_WIDTH 320 #define SCREEN_HEIGHT 480 #define CHUNK_H 8

// Idle sticks #define NUM_STICKS 10 #define STRIP_W 8 #define MAX_X_SLOTS (SCREEN_WIDTH / STRIP_W) #define VISIBLE_Y 106 #define REVEAL_CLEAR_HEIGHT 8

// Stick look #define HEAD_H 6 #define TAIL_H 6 #define MIN_STICK_H 40 #define MAX_STICK_H 120

// Smoothness (fixed frame pacing) #define TARGET_FPS 50 #define FRAME_US (1000000UL / TARGET_FPS)

// Outputs #define NUM_FIRES 12 #define NUM_LEDS 4 #define CHANNEL_ON_IS_HIGH 1

TFT_eSPI tft;

/* ================= AUDIO ================= */

AudioGeneratorWAV *wav = nullptr; AudioFileSourceFS *wavFile = nullptr; AudioOutputI2S *i2sOut = nullptr; TaskHandle_t audioTaskHandle = nullptr;

unsigned long audioStartTime = 0; bool audioScheduled = false;

void audioInit() { i2sOut = new AudioOutputI2S(); i2sOut->SetPinout(I2S_BCLK, I2S_LRCLK, I2S_DIN); i2sOut->SetGain(0.70f); wav = new AudioGeneratorWAV(); }

inline void audioPump() { if (wav && wav->isRunning()) { if (!wav->loop()) { wav->stop(); if (wavFile) { delete wavFile; wavFile = nullptr; } } } }

void audioTask(void *param) { for (;;) { audioPump(); vTaskDelay(1); } }

void playWavOnce(const char *path) { if (!wav || !i2sOut) return;

if (wav->isRunning()) { wav->stop(); if (wavFile) { delete wavFile; wavFile = nullptr; } }

wavFile = new AudioFileSourceFS(LittleFS, path); wav->begin(wavFile, i2sOut); }

inline void serviceScheduledAudio() { if (audioScheduled && (int32_t)(millis() - audioStartTime) >= 0) { playWavOnce("/go.wav"); audioScheduled = false; } }

/* ================= SHIFT REGISTERS (2x74HC595) ================= */

static uint16_t srState = 0;

void srWrite16(uint16_t value) { #if CHANNEL_ON_IS_HIGH uint16_t v = value; #else uint16_t v = ~value; #endif

digitalWrite(SR_LATCH, LOW); shiftOut(SR_DATA, SR_CLOCK, MSBFIRST, (uint8_t)(v >> 8)); // U2 shiftOut(SR_DATA, SR_CLOCK, MSBFIRST, (uint8_t)(v & 0xFF)); // U1 digitalWrite(SR_LATCH, HIGH); }

inline void setAllOff() { srState = 0; srWrite16(srState); }

inline void setFire(uint8_t ch, bool on) { if (ch < 1 || ch > 12) return; uint8_t bit = (ch <= 8) ? (ch - 1) : (8 + (ch - 9)); if (on) srState |= (1u << bit); else srState &= ~(1u << bit); srWrite16(srState); }

inline void setLed(uint8_t led, bool on) { if (led < 1 || led > 4) return; uint8_t bit = 12 + (led - 1); if (on) srState |= (1u << bit); else srState &= ~(1u << bit); srWrite16(srState); }

/* ================= RAW DRAW (LittleFS, CHUNKED) ================= */

bool showRAW(const char *filename) { File f = LittleFS.open(filename, "r"); if (!f) { Serial.print("Missing RAW: "); Serial.println(filename); return false; }

static uint16_t buf[SCREEN_WIDTH * CHUNK_H];

for (int y = 0; y < SCREEN_HEIGHT; y += CHUNK_H) { int h = min(CHUNK_H, SCREEN_HEIGHT - y); size_t need = (size_t)SCREEN_WIDTH * (size_t)h * 2; size_t got = f.read((uint8_t*)buf, need); if (got != need) break;

tft.pushImage(0, y, SCREEN_WIDTH, h, buf);

serviceScheduledAudio();
yield();

}

f.close(); return true; }

/* ================= STICKS (PSRAM BG CACHE, STABLE DRAW) ================= */

struct Stick { int x; int h; int lastY; float y; // subpixel position float vy; // pixels per frame (fixed fps) }; Stick sticks[NUM_STICKS];

// Flattened PSRAM cache: [NUM_STICKS][SCREEN_HEIGHT][STRIP_W] uint16_t *bgCachePSRAM = nullptr; uint16_t revealBG[SCREEN_WIDTH * REVEAL_CLEAR_HEIGHT];

static uint32_t nextFrameUs = 0;

inline uint16_t* bgStripPtr(int stickIndex, int y) { return bgCachePSRAM + (stickIndex * SCREEN_HEIGHT + y) * STRIP_W; }

static inline void frameWait() { uint32_t now = micros(); int32_t wait = (int32_t)(nextFrameUs - now); if (wait > 0) { if (wait > 1500) delayMicroseconds((uint32_t)wait - 1000); while ((int32_t)(nextFrameUs - micros()) > 0) {} } else { if (wait < -(int32_t)(FRAME_US * 5)) nextFrameUs = now; } nextFrameUs += FRAME_US; }

bool buildBackgroundCacheFromSbg() { if (!bgCachePSRAM) return false;

File f = LittleFS.open("/sbg.raw565", "r"); if (!f) return false;

static uint16_t line[SCREEN_WIDTH];

for (int y = 0; y < SCREEN_HEIGHT; y++) { size_t got = f.read((uint8_t*)line, SCREEN_WIDTH * 2); if (got != SCREEN_WIDTH * 2) { f.close(); return false; }

for (int i = 0; i < NUM_STICKS; i++) {
  memcpy(bgStripPtr(i, y), &line[sticks[i].x], STRIP_W * 2);
}
serviceScheduledAudio();
yield();

} f.close();

// reveal band File f2 = LittleFS.open("/sbg.raw565", "r"); if (!f2) return false; uint32_t off = (uint32_t)VISIBLE_Y * (uint32_t)SCREEN_WIDTH * 2; f2.seek(off, fs::SeekSet);

size_t need = (size_t)SCREEN_WIDTH * REVEAL_CLEAR_HEIGHT * 2; if (f2.read((uint8_t*)revealBG, need) != need) { f2.close(); return false; } f2.close();

return true; }

void initIdleScreen() { showRAW("/sbg.raw565");

bool used[MAX_X_SLOTS] = {}; for (int i = 0; i < NUM_STICKS; i++) { int s; do { s = random(MAX_X_SLOTS); } while (used[s]); used[s] = true;

sticks[i].x = s * STRIP_W;
sticks[i].h = random(MIN_STICK_H, MAX_STICK_H + 1);
sticks[i].y = (float)random(-200, -40);
sticks[i].lastY = (int)sticks[i].y;

// fixed-speed per frame (stable at fixed FPS)
sticks[i].vy = random(18, 36) / 10.0f; // 3.0..5.5 px/frame

}

if (bgCachePSRAM) buildBackgroundCacheFromSbg(); nextFrameUs = micros(); }

inline void restoreBG(int i, int y, int h) { if (!bgCachePSRAM) return; if (h <= 0) return;

// clip if (y < 0) { h += y; y = 0; } if (y + h > SCREEN_HEIGHT) h = SCREEN_HEIGHT - y; if (h <= 0) return;

// skip if above visible band if (y + h <= VISIBLE_Y) return; if (y < VISIBLE_Y) { int cut = VISIBLE_Y - y; y += cut; h -= cut; if (h <= 0) return; }

// push in smaller chunks to keep bus smooth const int HSTEP = 24; for (int yy = y; yy < y + h; yy += HSTEP) { int hh = min(HSTEP, (y + h) - yy); tft.pushImage(sticks[i].x, yy, STRIP_W, hh, bgStripPtr(i, yy)); } }

inline void drawStick(int x, int y, int h) { int top = max(y, VISIBLE_Y); int bot = min(y + h, SCREEN_HEIGHT); if (bot <= top) return;

int visibleH = bot - top;

// head int headH = min(HEAD_H, visibleH); tft.fillRect(x, top, STRIP_W, headH, TFT_YELLOW);

// tail/body int rem = visibleH - headH; int tailH = min(TAIL_H, rem); int bodyH = rem - tailH;

if (bodyH > 0) tft.fillRect(x, top + headH, STRIP_W, bodyH, TFT_BLUE); if (tailH > 0) tft.fillRect(x, bot - tailH, STRIP_W, tailH, TFT_YELLOW); }

void drawIdleSticks() { frameWait();

tft.startWrite();

// refresh reveal band //tft.pushImage(0, VISIBLE_Y, SCREEN_WIDTH, REVEAL_CLEAR_HEIGHT, revealBG);

for (int i = 0; i < NUM_STICKS; i++) {

// restore old
restoreBG(i, sticks[i].lastY, sticks[i].h);

// update
sticks[i].y += sticks[i].vy;
int y = (int)(sticks[i].y);
sticks[i].lastY = y;

// recycle
if (y > SCREEN_HEIGHT + 60) {
  sticks[i].y = (float)random(-200, -40);
  sticks[i].h = random(MIN_STICK_H, MAX_STICK_H + 1);
  sticks[i].vy = random(30, 55) / 10.0f;
  sticks[i].lastY = (int)sticks[i].y;
  continue;
}

// draw new
drawStick(sticks[i].x, y, sticks[i].h);

}

tft.endWrite();

serviceScheduledAudio(); yield(); }

/* ================= FIRE SEQUENCE ================= */

void runFireSequence() { setAllOff();

int order[NUM_FIRES]; for (int i = 0; i < NUM_FIRES; i++) order[i] = i + 1; for (int i = NUM_FIRES - 1; i > 0; i--) { int j = random(0, i + 1); int t = order[i]; order[i] = order[j]; order[j] = t; }

for (int i = 0; i < NUM_FIRES; i++) { setFire(order[i], true); delay(500); setFire(order[i], false); delay(1000); serviceScheduledAudio(); yield(); } }

/* ================= SETUP ================= */

void setup() { Serial.begin(115200); delay(100);

Serial.println(); Serial.println("=== BOOT: STABLE STICKS (NO SPRITES) ===");

pinMode(BUTTON_START, INPUT_PULLUP);

pinMode(SR_DATA, OUTPUT); pinMode(SR_CLOCK, OUTPUT); pinMode(SR_LATCH, OUTPUT); setAllOff();

// TFT tft.init(); tft.setRotation(0);

// IMPORTANT: keep swapBytes ON globally (RAW565 + cached strips) tft.setSwapBytes(true);

tft.fillScreen(TFT_RED); delay(200); tft.fillScreen(TFT_GREEN); delay(200); tft.fillScreen(TFT_BLUE); delay(200); tft.fillScreen(TFT_BLACK);

tft.setTextColor(TFT_WHITE, TFT_BLACK); tft.setTextSize(2); tft.setCursor(10, 10); tft.println("ESP32-S3 OK"); tft.println("Mounting LittleFS...");

bool ok = LittleFS.begin(false, "/littlefs", 10, "littlefs"); Serial.print("LittleFS = "); Serial.println(ok ? "OK" : "FAIL");

if (!ok) { tft.fillScreen(TFT_RED); tft.setCursor(10, 10); tft.println("LittleFS FAIL"); while (1) delay(250); }

// PSRAM cache size_t words = (size_t)NUM_STICKS * (size_t)SCREEN_HEIGHT * (size_t)STRIP_W; size_t bytes = words * sizeof(uint16_t); bgCachePSRAM = (uint16_t*)heap_caps_malloc(bytes, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);

Serial.print("bgCachePSRAM = "); Serial.println(bgCachePSRAM ? "OK" : "FAIL");

// Audio audioInit(); xTaskCreatePinnedToCore(audioTask, "AudioTask", 4096, nullptr, 2, &audioTaskHandle, 0);

randomSeed((uint32_t)esp_random()); }

/* ================= LOOP ================= */

void loop() { initIdleScreen();

while (digitalRead(BUTTON_START) == HIGH) { drawIdleSticks(); }

delay(50); if (digitalRead(BUTTON_START) == HIGH) return;

audioStartTime = millis() + 1500; audioScheduled = true;

showRAW("/ready.raw565"); delay(1000); showRAW("/3.raw565"); delay(450); showRAW("/2.raw565"); delay(450); showRAW("/1.raw565"); delay(450);

showRAW("/go.raw565");

for (int i = 0; i < 10; i++) { tft.invertDisplay(i & 1); delay(105); serviceScheduledAudio(); } tft.invertDisplay(false);

runFireSequence();

while (wav && wav->isRunning()) { delay(10); yield(); } }

35 days

flux

2:42

Chat History

Project

GND

Interpreting user code request.

Clarifying project components.

Asking clarifying questions.

Addressing datasheet tool parameters.

I'm sorry, but I can't assist with that.

Using Knowledge Base Tool.

Checking if I can make the changes for you.

Planning response for user.

I’ll set up an official USB‑C ESP32‑S3 DevKit build matching your sketch with I2S audio, 2× shift registers, and an SPI ILI9488 TFT.

Plan

Add parts: ESP32‑S3‑DEVKITC‑1, MAX98357A, 2× 74HC595, ILI9488, Tactile Switch.
Wire per your defines: I2S on GPIO4/5/6, SR on GPIO15/16/17, button on GPIO21.
Confirm TFT_eSPI pin map, then wire SPI/control pins.
Label nets and review.

Before I run it:

Confirm the dev board: keep ESP32‑S3‑DEVKITC‑1 USB‑C?
Share your TFT_eSPI pin assignments for the ILI9488 (MOSI/SCK/CS/DC/RST/BL).
Power for MAX98357A: 5 V from USB or 3.3 V?

Click Start on the plan bar and I’ll execute this setup.

Confirm devkit choice

Provide TFT pin map

Clarify audio power

Shift-register outputs detail

Programming/test points

35 days

Ready to start.

Show Plan

GND

SPICS1

SPIWP

SPICS0

VDD_SPI

SPIHD

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