From e8701195e66f2d27ffe17fb514eae8173795aaf7 Mon Sep 17 00:00:00 2001
From: Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com>
Date: Thu, 4 Mar 2021 22:54:23 +0500
Subject: Initial commit
---
Marlin/src/HAL/TEENSY35_36/eeprom.cpp | 76 +++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644 Marlin/src/HAL/TEENSY35_36/eeprom.cpp
(limited to 'Marlin/src/HAL/TEENSY35_36/eeprom.cpp')
diff --git a/Marlin/src/HAL/TEENSY35_36/eeprom.cpp b/Marlin/src/HAL/TEENSY35_36/eeprom.cpp
new file mode 100644
index 0000000..8cd6b4f
--- /dev/null
+++ b/Marlin/src/HAL/TEENSY35_36/eeprom.cpp
@@ -0,0 +1,76 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ */
+#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
+
+/**
+ * HAL PersistentStore for Teensy 3.5 (MK64FX512) and Teensy 3.6 (MK66FX1M0)
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if USE_WIRED_EEPROM
+
+#include "../shared/eeprom_api.h"
+#include
+
+#ifndef MARLIN_EEPROM_SIZE
+ #define MARLIN_EEPROM_SIZE size_t(E2END + 1)
+#endif
+size_t PersistentStore::capacity() { return MARLIN_EEPROM_SIZE; }
+
+bool PersistentStore::access_start() { return true; }
+bool PersistentStore::access_finish() { return true; }
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+ while (size--) {
+ uint8_t * const p = (uint8_t * const)pos;
+ uint8_t v = *value;
+ // EEPROM has only ~100,000 write cycles,
+ // so only write bytes that have changed!
+ if (v != eeprom_read_byte(p)) {
+ eeprom_write_byte(p, v);
+ if (eeprom_read_byte(p) != v) {
+ SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
+ return true;
+ }
+ }
+ crc16(crc, &v, 1);
+ pos++;
+ value++;
+ }
+ return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+ do {
+ uint8_t c = eeprom_read_byte((uint8_t*)pos);
+ if (writing) *value = c;
+ crc16(crc, &c, 1);
+ pos++;
+ value++;
+ } while (--size);
+ return false;
+}
+
+#endif // USE_WIRED_EEPROM
+#endif // __MK64FX512__ || __MK66FX1M0__
--
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