ota_backend_arduino_libretiny.cpp

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#ifdef USE_LIBRETINY
#include "ota_backend_arduino_libretiny.h"
#include "ota_backend.h"
 
#include "esphome/core/defines.h"
#include "esphome/core/log.h"
 
#include <Update.h>
 
namespace esphome::ota {
 
ESPHOME_LOG_TAG(TAG, "ota");
 
std::unique_ptr<ArduinoLibreTinyOTABackend> make_ota_backend() { return make_unique<ArduinoLibreTinyOTABackend>(); }
 
OTAResponseTypes ArduinoLibreTinyOTABackend::begin(size_t image_size, OTAType ota_type) {
  if (!this->lock_.try_acquire())
    return OTA_RESPONSE_ERROR_UPDATE_BUSY;
  if (ota_type != OTA_TYPE_UPDATE_APP) {
    return OTA_RESPONSE_ERROR_UNSUPPORTED_OTA_TYPE;
  }
  // Handle UPDATE_SIZE_UNKNOWN (0) which is used by web server OTA
  // where the exact firmware size is unknown due to multipart encoding
  if (image_size == 0) {
    image_size = UPDATE_SIZE_UNKNOWN;
  }
  bool ret = Update.begin(image_size, U_FLASH);
  if (ret) {
    return OTA_RESPONSE_OK;
  }
 
  uint8_t error = Update.getError();
  if (error == UPDATE_ERROR_SIZE)
    return OTA_RESPONSE_ERROR_ESP32_NOT_ENOUGH_SPACE;
 
  ESP_LOGE(TAG, "Begin error: %d", error);
 
  return OTA_RESPONSE_ERROR_UNKNOWN;
}
 
void ArduinoLibreTinyOTABackend::set_update_md5(const char *md5) {
  Update.setMD5(md5);
  this->md5_set_ = true;
}
 
OTAResponseTypes ArduinoLibreTinyOTABackend::write(uint8_t *data, size_t len) {
  size_t written = Update.write(data, len);
  if (written == len) {
    return OTA_RESPONSE_OK;
  }
 
  uint8_t error = Update.getError();
  ESP_LOGE(TAG, "Write error: %d", error);
 
  return OTA_RESPONSE_ERROR_WRITING_FLASH;
}
 
OTAResponseTypes ArduinoLibreTinyOTABackend::end() {
  // Use strict validation (false) when MD5 is set, lenient validation (true) when no MD5
  // This matches the behavior of the old web_server OTA implementation
  if (Update.end(!this->md5_set_)) {
    this->lock_.hold_until_reboot();
    return OTA_RESPONSE_OK;
  }
 
  uint8_t error = Update.getError();
  ESP_LOGE(TAG, "End error: %d", error);
 
  return OTA_RESPONSE_ERROR_UPDATE_END;
}
 
void ArduinoLibreTinyOTABackend::abort() {
  if (!this->lock_.is_held())  // refused in begin()
    return;
  Update.abort();
}
 
}  // namespace esphome::ota
#endif  // USE_LIBRETINY