Arduino:1.8.13 (Mac OS X), 開發板:“Arduino Leonardo”
/var/folders/ww/_mt2rwvd5dqcywwsyfxx19vw0000gn/T//ccTyHLPw.ltrans0.ltrans.o: In function oled_flush': sketch/oled.c:108: undefined reference to
spi_transfer_nr’
sketch/oled.c:109: undefined reference to spi_transfer_nr' sketch/oled.c:110: undefined reference to
spi_transfer_nr’
sketch/oled.c:112: undefined reference to spi_transfer_nr' sketch/oled.c:113: undefined reference to
spi_transfer_nr’
/var/folders/ww/_mt2rwvd5dqcywwsyfxx19vw0000gn/T//ccTyHLPw.ltrans0.ltrans.o:sketch/oled.c:114: more undefined references to `spi_transfer_nr’ follow
collect2: error: ld returned 1 exit status
exit status 1
開發板 Arduino Leonardo 編譯錯誤。
This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.
how to fix watchx.ino