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Insist on writing stream data in buffer-sized blocks.
Maintaining alignment improves SD card write performance significantly.
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@ -121,8 +121,8 @@ private:
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const auto bytes_to_write = stream.read(write_buffer->data(), write_buffer->size());
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if( bytes_to_write ) {
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if( !file.write(write_buffer->data(), bytes_to_write) ) {
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if( bytes_to_write == write_buffer->size() ) {
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if( !file.write(write_buffer->data(), write_buffer->size()) ) {
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led_tx.on();
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break;
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}
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