Hi all,
I got the following question: how to program a 328P through ISCP while having SPI device connected to it ? (a screen for example..). I m currently designing a PCB sheet and I do not plan to have a USB plug. On my prototype I m using a Minipro that I can program using RX TX (Trough an UNO as ISP...) to do the updates .. but that's because the bootloader is already inside: To what I understood it will not work for a "blank" 328P.
I m thinking using jumpers to disconnect the screen during the programming, but I m afraid of bad connections du to those jumpers ... any other suggestions?
Thx for your help,
lenoyl