First Commit

libraries/SdFat/extras/attic/SysCallBareUno.cpp

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+/**
+ * Copyright (c) 2011-2020 Bill Greiman
+ * This file is part of the SdFat library for SD memory cards.
+ *
+ * MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#include "SysCall.h"
+#if 0  // defined(__AVR_ATmega328P__) && !ENABLE_ARDUINO_FEATURES
+#include <avr/interrupt.h>
+
+// ISR for timer 2 Compare A interrupt
+volatile uint16_t timer2 = 0;
+ISR(TIMER2_COMPA_vect) {
+  timer2++;
+}
+SdMillis_t SysCall::curTimeMS() {
+  if (TIMSK2 != (1 << OCIE2A)) {
+    // use system clock (clkI/O).
+    ASSR &= ~(1 << AS2);
+    // Clear Timer on Compare Match (CTC) mode
+    TCCR2A = (1 << WGM21);
+    // Only need 64x prescale bits in TCCR2B
+    TCCR2B = (1 << CS22);
+    // set TOP so timer period is 1 ms.
+    #if F_CPU/64000 > 250
+    #error F_CPU too large.
+    #endif  // F_CPU/64000 > 250
+    OCR2A = F_CPU/64000UL - 1;
+    // Enable interrupt.
+    TIMSK2 = (1 << OCIE2A);
+  }
+  cli();
+  uint16_t rtn = timer2;
+  sei();
+  return rtn;
+}
+#endif  // defined(__AVR_ATmega328P__) && !ENABLE_ARDUINO_FEATURES