Add 'Seeed Wio Terminal/projects/m5-gps.ino'

Seeed Wio Terminal/projects/m5-gps.ino

@@ -0,0 +1,116 @@
+#include <TinyGPS++.h>
+#include <wiring_private.h>
+#include "TFT_eSPI.h"
+
+TFT_eSPI tft;
+
+static const uint32_t GPSBaud = 115200;
+
+// The TinyGPS++ object
+TinyGPSPlus gps;
+
+// The serial connection to the GPS device - Left side Grove connector.
+// Left side Grove connector shares pins with I2C1 of 40 pin connector.
+static Uart Serial3(&sercom3, PIN_WIRE_SCL, PIN_WIRE_SDA, SERCOM_RX_PAD_1, UART_TX_PAD_0);
+
+void setup()
+{
+  Serial.begin(115200);
+  tft.begin();
+  tft.setRotation(3);
+  tft.fillScreen(TFT_BLACK);
+  tft.setFreeFont(&FreeSans9pt7b);
+  tft.setTextColor(TFT_WHITE);
+
+  Serial3.begin(GPSBaud);
+  pinPeripheral(PIN_WIRE_SCL, PIO_SERCOM_ALT);
+  pinPeripheral(PIN_WIRE_SCL, PIO_SERCOM_ALT);
+}
+ 
+void loop()
+{
+  // This sketch displays information every time a new sentence is correctly encoded.
+  while (Serial3.available() > 0)
+    if (gps.encode(Serial3.read()))
+      displayInfo();
+      delay(3000);
+ 
+  if (millis() > 5000 && gps.charsProcessed() < 10)
+  {
+    Serial.println(F("No GPS detected: check wiring."));
+    tft.drawString("No GPS detected: check wiring.", 10, 10);
+    while(true);
+  }
+}
+
+void displayInfo()
+{
+  Serial.print(F("Location: ")); 
+  if (gps.location.isValid())
+  {
+    Serial.print(gps.location.lat(), 6);
+    Serial.print(F(","));
+    Serial.print(gps.location.lng(), 6);
+
+    String text = String(gps.location.lat(), 6) + ", " + String(gps.location.lng(), 6);
+    tft.fillRect(10, 30, 190, 30, TFT_BLACK);
+    tft.drawString(text, 10, 30);
+  }
+  else
+  {
+    Serial.print(F("INVALID"));
+  }
+
+  Serial.print(F("  Date/Time: "));
+  if (gps.date.isValid())
+  {
+    Serial.print(gps.date.month());
+    Serial.print(F("/"));
+    Serial.print(gps.date.day());
+    Serial.print(F("/"));
+    Serial.print(gps.date.year());
+  }
+  else
+  {
+    Serial.print(F("INVALID"));
+  }
+
+  Serial.print(F(" "));
+  if (gps.time.isValid())
+  {
+    if (gps.time.hour() < 10) Serial.print(F("0"));
+    Serial.print(gps.time.hour());
+    Serial.print(F(":"));
+    if (gps.time.minute() < 10) Serial.print(F("0"));
+    Serial.print(gps.time.minute());
+    Serial.print(F(":"));
+    if (gps.time.second() < 10) Serial.print(F("0"));
+    Serial.print(gps.time.second());
+    Serial.print(F("."));
+    if (gps.time.centisecond() < 10) Serial.print(F("0"));
+    Serial.print(gps.time.centisecond());
+  }
+  else
+  {
+    Serial.print(F("INVALID"));
+  }
+
+  Serial.println();
+}
+
+void SERCOM3_0_Handler()
+{
+  Serial3.IrqHandler();
+}
+void SERCOM3_1_Handler()
+{
+  Serial3.IrqHandler();
+}
+void SERCOM3_2_Handler()
+{
+  Serial3.IrqHandler();
+}
+void SERCOM3_3_Handler()
+{
+  Serial3.IrqHandler();
+}