some hardware testing code

Factory_Tests/Feather_ESP32S3_ReverseTFT_FactoryTest/Feather_ESP32S3_ReverseTFT_FactoryTest.ino

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+// SPDX-FileCopyrightText: 2022 Limor Fried for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include <Arduino.h>
+#include "Adafruit_MAX1704X.h"
+#include <Adafruit_NeoPixel.h>
+#include "Adafruit_TestBed.h"
+#include <Adafruit_BME280.h>
+#include <Adafruit_ST7789.h> 
+#include <Fonts/FreeSans12pt7b.h>
+
+Adafruit_BME280 bme; // I2C
+bool bmefound = false;
+extern Adafruit_TestBed TB;
+
+Adafruit_MAX17048 lipo;
+Adafruit_ST7789 display = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
+
+GFXcanvas16 canvas(240, 135);
+
+void setup() {
+  Serial.begin(115200);
+  //while (! Serial) delay(10);
+  delay(100);
+  
+  TB.neopixelPin = PIN_NEOPIXEL;
+  TB.neopixelNum = 1; 
+  TB.begin();
+  TB.setColor(WHITE);
+
+  display.init(135, 240);           // Init ST7789 240x135
+  display.setRotation(3);
+  canvas.setFont(&FreeSans12pt7b);
+  canvas.setTextColor(ST77XX_WHITE); 
+
+  if (!lipo.begin()) {
+    Serial.println(F("Couldnt find Adafruit MAX17048?\nMake sure a battery is plugged in!"));
+    while (1) delay(10);
+  }
+    
+  Serial.print(F("Found MAX17048"));
+  Serial.print(F(" with Chip ID: 0x")); 
+  Serial.println(lipo.getChipID(), HEX);
+
+  if (TB.scanI2CBus(0x77)) {
+    Serial.println("BME280 address");
+
+    unsigned status = bme.begin();  
+    if (!status) {
+      Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
+      Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID(),16);
+      Serial.print("        ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
+      Serial.print("   ID of 0x56-0x58 represents a BMP 280,\n");
+      Serial.print("        ID of 0x60 represents a BME 280.\n");
+      Serial.print("        ID of 0x61 represents a BME 680.\n");
+      return;
+    }
+    Serial.println("BME280 found OK");
+    bmefound = true;
+  }
+
+  pinMode(0, INPUT_PULLUP);
+  pinMode(1, INPUT_PULLDOWN);
+  pinMode(2, INPUT_PULLDOWN);
+}
+
+uint8_t j = 0;
+
+void loop() {
+  bool valid_i2c[128];
+  Serial.println("**********************");
+
+  if (j == 0) {
+    Serial.print("I2C scan: ");
+    for (int i=0; i< 128; i++) {
+      if (TB.scanI2CBus(i, 0)) {
+        Serial.print("0x");
+        Serial.print(i, HEX);
+        Serial.print(", ");
+        valid_i2c[i] = true;
+      } else {
+        valid_i2c[i] = false;
+      }
+    }
+  }
+
+  if (j % 2 == 0) {
+    canvas.fillScreen(ST77XX_BLACK);
+    canvas.setCursor(0, 17);
+    canvas.setTextColor(ST77XX_RED);
+    canvas.println("Adafruit Feather");
+    canvas.setTextColor(ST77XX_YELLOW);
+    canvas.println("ESP32-S3 TFT Demo");
+    canvas.setTextColor(ST77XX_GREEN); 
+    canvas.print("Battery: ");
+    canvas.setTextColor(ST77XX_WHITE);
+    canvas.print(lipo.cellVoltage(), 1);
+    canvas.print(" V  /  ");
+    canvas.print(lipo.cellPercent(), 0);
+    canvas.println("%");
+    canvas.setTextColor(ST77XX_BLUE); 
+    canvas.print("I2C: ");
+    canvas.setTextColor(ST77XX_WHITE);
+    for (uint8_t a=0x01; a<=0x7F; a++) {
+      if (valid_i2c[a])  {
+        canvas.print("0x");
+        canvas.print(a, HEX);
+        canvas.print(", ");
+      }
+    }
+    canvas.println("");
+    canvas.print("Buttons: ");
+    Serial.println(digitalRead(0));
+    Serial.println(digitalRead(1));
+    Serial.println(digitalRead(2));
+    if (!digitalRead(0)) {
+      canvas.print("D0, ");
+    }
+    if (digitalRead(1)) {
+      canvas.print("D1, ");
+    }
+    if (digitalRead(2)) {
+      canvas.print("D2, ");
+    }
+    display.drawRGBBitmap(0, 0, canvas.getBuffer(), 240, 135);
+    pinMode(TFT_BACKLITE, OUTPUT);
+    digitalWrite(TFT_BACKLITE, HIGH);
+  }
+  
+  TB.setColor(TB.Wheel(j++));
+  delay(10);
+  return;
+}