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fix rp2040

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J. Nick Koston 2025-07-01 13:23:24 -05:00
parent 2d0c109dc1
commit efafabed97
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1 changed files with 9 additions and 3 deletions
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12
esphome/components/ota_base/ota_backend_arduino_rp2040.cpp
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@ -17,10 +17,16 @@ static const char *const TAG = "ota.arduino_rp2040";
std::unique_ptr<OTABackend> make_ota_backend() { return make_unique<ArduinoRP2040OTABackend>(); }
OTAResponseTypes ArduinoRP2040OTABackend::begin(size_t image_size) {
// Handle UPDATE_SIZE_UNKNOWN (0) which is used by web server OTA
// where the exact firmware size is unknown due to multipart encoding
// Handle UPDATE_SIZE_UNKNOWN (0) by calculating available space
if (image_size == 0) {
image_size = UPDATE_SIZE_UNKNOWN;
// Similar to ESP8266, calculate available space from flash layout
extern uint8_t _FS_start;
extern uint8_t _FS_end;
// Calculate the size of the filesystem area which will be used for OTA
size_t fs_size = &_FS_end - &_FS_start;
// Reserve some space for filesystem overhead
image_size = (fs_size - 0x1000) & 0xFFFFF000;
ESP_LOGD(TAG, "OTA size unknown, using filesystem size: %u bytes", image_size);
}
bool ret = Update.begin(image_size, U_FLASH);
if (ret) {