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Prevent Watchdog reset writing Creality 4.x EEPROM (#20328)

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Jason Smith 2020-11-30 22:25:44 -08:00 committed by GitHub
parent db8fb9a03a
commit 6f4381df53
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 1 deletions
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7
Marlin/src/HAL/STM32F1/eeprom_bl24cxx.cpp
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@ -48,6 +48,8 @@ bool PersistentStore::access_start() { eeprom_init(); return true; }
bool PersistentStore::access_finish() { return true; }
bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
size_t written = 0;
while (size--) {
uint8_t v = *value;
uint8_t * const p = (uint8_t * const)pos;
@ -55,7 +57,10 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
// so only write bytes that have changed!
if (v != eeprom_read_byte(p)) {
eeprom_write_byte(p, v);
delay(2);
if (++written % 128 == 0)
safe_delay(2); // Avoid triggering watchdog during long EEPROM writes
else
delay(2);
if (eeprom_read_byte(p) != v) {
SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
return true;