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Code Issues Releases Wiki Activity

Fix ESP8266 preferences not set up (#2362)

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This commit is contained in:
Otto Winter
2021-09-21 21:59:11 +02:00
committed by GitHub
parent 637b55bfbf
commit bbac1534a3
2 changed files with 27 additions and 2 deletions
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22
esphome/components/esp8266/core.cpp
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@@ -32,6 +32,28 @@ uint32_t arch_get_cpu_cycle_count() {
}
uint32_t arch_get_cpu_freq_hz() { return F_CPU; }
void force_link_symbols() {
// Tasmota uses magic bytes in the binary to check if an OTA firmware is compatible
// with their settings - ESPHome uses a different settings system (that can also survive
// erases). So set magic bytes indicating all tasmota versions are supported.
// This only adds 12 bytes of binary size, which is an acceptable price to pay for easier support
// for Tasmota.
// https://github.com/arendst/Tasmota/blob/b05301b1497942167a015a6113b7f424e42942cd/tasmota/settings.ino#L346-L380
// https://github.com/arendst/Tasmota/blob/b05301b1497942167a015a6113b7f424e42942cd/tasmota/i18n.h#L652-L654
const static uint32_t TASMOTA_MAGIC_BYTES[] PROGMEM = {0x5AA55AA5, 0xFFFFFFFF, 0xA55AA55A};
// Force link symbol by using a volatile integer (GCC attribute used does not work because of LTO)
volatile int x = 0;
x = TASMOTA_MAGIC_BYTES[x];
}
extern "C" void resetPins() { // NOLINT
// Added in framework 2.7.0
// usually this sets up all pins to be in INPUT mode
// however, not strictly needed as we set up the pins properly
// ourselves and this causes pins to toggle during reboot.
force_link_symbols();
}
} // namespace esphome
#endif // USE_ESP8266