Create Single_Ended.ino

Author: 7semi-Tech

examples/Single_Ended/Single_Ended.ino

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+/*******************************************************
+ * @file Single_Ended.ino
+ *
+ * @brief Example demonstrating single-ended analog readings
+ *        using the 7Semi ADS7830 8-bit ADC module.
+ *
+ * This sketch reads analog voltages from all 8 input channels
+ * (CH0 to CH7) in single-ended mode over I2C and converts the
+ * values into voltages using the internal 2.5V reference.
+ *
+ * Key features demonstrated:
+ * - Single-ended channel reads
+ * - 8-bit ADC resolution (0–2.5V scale)
+ *
+ * Connections:
+ * - VCC  -> 3.3V or 5V
+ * - GND  -> GND
+ * - SDA  -> A4 (Uno)
+ * - SCL  -> A5 (Uno)
+ *
+ * @section author Author
+ * Written by 7Semi
+ *
+ * @section license License
+ * @license MIT
+ * Copyright (c) 2025 7Semi
+ *******************************************************/
+ 
+ #include <7semi_ADS7830.h>
+
+ADS7830_7semi adc;  // Create ADS7830 object
+
+void setup() {
+  Serial.begin(115200);
+  Wire.begin();
+
+  if (adc.begin()) {
+    Serial.println("ADS7830 initialized");
+  } else {
+    Serial.println("ADS7830 not found!");
+    while (1);
+  }
+
+  // Enable internal 2.5V reference voltage
+  // Use DISABLE to use external voltage via VREF pin
+  adc.intRef(ENABLE);
+}
+
+void loop() {
+  // Array to hold readings from CH0 to CH7
+  uint8_t values[8];
+
+  // Read all 8 channels using loop
+  for (uint8_t i = 0; i < 8; i++) {
+    values[i] = adc.readSingleCh(i);
+  }
+
+  // Convert ADC reading (0–255) to voltage using scale factor
+  float scale = 2.5 / 255.0;
+
+  Serial.println("=== Single-Ended Readings (in Volts) ===");
+  for (uint8_t i = 0; i < 8; i++) {
+    Serial.print("CH");
+    Serial.print(i);
+    Serial.print(": ");
+    Serial.println(values[i] * scale, 3);  // Print 3 decimal places
+  }
+  Serial.println("========================================");
+  Serial.println();
+
+  delay(1000);
+}