Schematic + Code Updates

- ESP32-S3 Komplett
- MC4728 Komplett + Test Skript

dev/digital/DAC_MCP4728_Test/src/main.cpp

@@ -0,0 +1,57 @@
+#include <Wire.h>
+#include <Adafruit_MCP4728.h>
+
+#define BAUDRATE  115200
+
+#define I2C_SDA   15
+#define I2C_SCL   16
+#define I2C_FREQ  400000
+
+#define DAC_MAX   4095
+#define DAC_MIN   0
+#define VREF_mV   5000
+
+Adafruit_MCP4728 mcp;
+
+static uint16_t value_mV = VREF_mV;
+
+uint16_t voltage(uint16_t mV)
+{
+  return map(mV, 0, VREF_mV, DAC_MIN, DAC_MAX);
+}
+
+void setup() 
+{
+  Serial.begin(BAUDRATE);
+  delay(1000);
+  Serial.print("\n\r--- ESP32-S3 + MCP4728 DAC Test ---");
+
+  Wire.begin(I2C_SDA, I2C_SCL);
+  Wire.setClock(I2C_FREQ);
+
+  Serial.print("\n\rInitialisiere MCP4728...");
+  uint8_t attempts = 0;
+  while (!mcp.begin()) 
+  {
+    Serial.print(".");
+    delay(100);
+  }
+  Serial.print("\n\rErfolgreich verbunden!");
+
+  mcp.setChannelValue(MCP4728_CHANNEL_A, 0, MCP4728_VREF_INTERNAL, MCP4728_GAIN_2X);
+  Serial.print("\n\rDAC-Kanal A auf 0 gesetzt");
+  delay(1000);
+}
+
+
+void loop() 
+{
+  value_mV = 200;
+  bool success = mcp.setChannelValue(MCP4728_CHANNEL_A, voltage(value_mV));
+
+  if (success) Serial.printf("DAC A = %u -> mV: %u\r\n", voltage(value_mV), value_mV);
+  else Serial.println("Schreibfehler am MCP4728!");
+  delay(200);
+
+  //value_mV = value_mV > 0 ? value_mV/2 : VREF_mV;
+}