Create TRRS_Trinkey_FactoryTest.ino

Factory_Tests/TRRS_Trinkey_FactoryTest/TRRS_Trinkey_FactoryTest.ino

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+// SPDX-FileCopyrightText: 2024 ladyada for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include "SdFat.h"
+#include "Adafruit_TestBed.h"
+#include "Adafruit_TinyUSB.h"
+
+// HID report descriptor using TinyUSB's template
+// Single Report (no ID) descriptor
+uint8_t const desc_hid_report[] = {
+  TUD_HID_REPORT_DESC_KEYBOARD()
+};
+
+Adafruit_USBD_HID usb_hid;
+
+#define TIP_KEYCODE  HID_KEY_SPACE
+#define RING_KEYCODE  HID_KEY_ENTER
+
+
+extern Adafruit_TestBed TB;
+uint8_t allpins[] = {PIN_TIP, PIN_RING1, PIN_RING2, PIN_SLEEVE};
+
+bool cableinserted = false;
+bool last_cablestate = false;
+uint32_t last_i2cscan = 0;
+
+void setup() {
+  Serial.begin(115200);
+  //while (!Serial) { yield(); delay(10); }     // wait till serial port is opened
+
+  usb_hid.setBootProtocol(HID_ITF_PROTOCOL_KEYBOARD);
+  usb_hid.setPollInterval(2);
+  usb_hid.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
+  usb_hid.setStringDescriptor("TinyUSB Keyboard");
+  usb_hid.begin();
+
+
+  TB.neopixelPin = PIN_NEOPIXEL;
+  TB.neopixelNum = NUM_NEOPIXEL;
+  TB.begin();
+}
+
+void loop() {
+  delay(10); // sample every 10 ms
+
+  uint8_t keycode[6] = { 0 };
+  uint8_t count = 0;
+  // used to avoid send multiple consecutive zero report for keyboard
+  static bool keyPressedPreviously = false;
+
+  pinMode(PIN_TIP, OUTPUT);
+  digitalWrite(PIN_TIP, LOW);
+  pinMode(PIN_TIP_SWITCH, INPUT_PULLUP);
+  cableinserted = digitalRead(PIN_TIP_SWITCH);
+
+  if (!cableinserted) {
+    TB.setColor(RED);
+  }
+
+  if (cableinserted && !last_cablestate) {
+    TB.setColor(GREEN);
+    delay(250);  // give em a quarter second to plug completely
+  }
+
+  last_cablestate = cableinserted;
+
+  // Wake up host if we are in suspend mode
+  if ( TinyUSBDevice.suspended() && count ) {
+    TinyUSBDevice.remoteWakeup();
+  }
+  // skip if hid is not ready e.g still transferring previous report
+  if ( !usb_hid.ready() ) return;
+
+  if (!cableinserted) {
+    keyPressedPreviously = false;
+    usb_hid.keyboardRelease(0);
+
+    // do an I2C scan while we're here, if we have pullups on SDA/SCL
+    if ((millis() - last_i2cscan) > 1000) {
+      TB.disableI2C();
+      if (TB.testPullup(SDA) && TB.testPullup(SCL)) {
+        Wire.begin();
+        TB.printI2CBusScan();
+      } else {
+        Serial.println("No pullups on SDA/SCL");
+      }
+      last_i2cscan = millis();
+    }
+    return;
+  }
+  // make two inputs
+  pinMode(PIN_TIP, INPUT_PULLUP);
+  pinMode(PIN_RING1, INPUT_PULLUP);
+
+  // make two 'ground' pins
+  pinMode(PIN_SLEEVE, OUTPUT);
+  digitalWrite(PIN_SLEEVE, LOW);
+  pinMode(PIN_RING2, OUTPUT);
+  digitalWrite(PIN_RING2, LOW);
+
+  delay(1);
+
+  if (!digitalRead(PIN_TIP)) {
+    keycode[0] = TIP_KEYCODE;
+    count++;
+  }
+  if (!digitalRead(PIN_RING1)) {
+    keycode[1] = RING_KEYCODE;
+    count++;
+  }  
+
+  if (count) {   // Send report if there is key pressed
+    uint8_t const report_id = 0;
+    uint8_t const modifier = 0;
+
+    keyPressedPreviously = true;
+    usb_hid.keyboardReport(report_id, modifier, keycode);
+  }
+  else
+  {
+    // Send All-zero report to indicate there is no keys pressed
+    // Most of the time, it is, though we don't need to send zero report
+    // every loop(), only a key is pressed in previous loop()
+    if ( keyPressedPreviously )
+    {
+      keyPressedPreviously = false;
+      usb_hid.keyboardRelease(0);
+    }
+  }
+}