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ch55xduino/ch55x/libraries/Generic_Examples/examples/06.EEPROM/EEPROM_cycle_write/EEPROM_cycle_write.ino

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+/*
+  EEPROM_cycle_write
+
+  A simple example write eeprom content one by one.
+  It will continue after power cycle.
+
+  created 2020
+  by Deqing Sun for use with CH55xduino
+
+  This example code is in the public domain.
+
+*/
+
+uint8_t writePtr = 0;
+uint8_t writeData = 0;
+
+void dumpEEPROM() {
+  USBSerial_println("DataFalsh Dump:");
+  for (uint8_t i = 0; i < 128; i++) {
+    uint8_t eepromData = eeprom_read_byte(i);
+    if (eepromData < 0x10) USBSerial_print((char)'0');
+    USBSerial_print(eepromData, HEX);
+    USBSerial_print((char)',');
+    if ((i & 15) == 15) USBSerial_println();
+  }
+  USBSerial_flush();
+}
+
+void setup() {
+  for (writePtr = 0; writePtr < 128; writePtr++) {
+    uint8_t eepromData = eeprom_read_byte(writePtr);
+    if (writePtr != eepromData) break;
+  }
+  writeData = writePtr;
+  if (writePtr >= 128) writePtr = 0;
+}
+
+void loop() {
+  delay(5000);
+  USBSerial_print("Write ");
+  USBSerial_print(writeData, HEX);
+  USBSerial_print(" to addr: ");
+  USBSerial_println(writePtr, HEX);
+  eeprom_write_byte(writePtr, writeData);
+  writeData++;
+  writePtr++;
+  if (writePtr >= 128) writePtr = 0;
+  dumpEEPROM();
+}