5.beep¶

功能：蜂鸣器哔哔三声

编译¶

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  west build -p always -b art_pi -d build 5.beep -- \
  -DCONFIG_BOOTLOADER_MCUBOOT=y \
  -DCONFIG_MCUBOOT_SIGNATURE_KEY_FILE="\"$HOME/zephyrproject/bootloader/mcuboot/root-rsa-2048.pem\""