1: ISP also download serial download, you need to set the port BOOT0 = 1, BOOT1 = 0, and download time to reset it
2: JLINK needed to download set BOOT0 = 0, BOOT1 = 0, with the appropriate software to download
1: ISP also download serial download, you need to set the port BOOT0 = 1, BOOT1 = 0, and download time to reset it
2: JLINK needed to download set BOOT0 = 0, BOOT1 = 0, with the appropriate software to download