... > You're perhaps confusing that with debugWIRE. As debugWIRE is a > one-wire protocol, it has to live with delays, caused by RC time > constants of the circuitry. ... > ISP is basically the SPI engine of the controller, running in slave > mode. As the entire SPI engine is a synchronous system clocked by the > IO clock of the AVR, the IO clock must be quite a bit faster than the > ISP clock (the ISP clock line itself is sampled within the SPI engine, > and ISP clock edges are detected during that sampling).
I have a question related to debugWIRE vs SPI internal to a Tiny88. A colleague of mine, new to AVRs, tried to use debugWIRE to step through some code that I gave him. In my code I turned off the SPI port through the Power Reduction Register. Once he hit that point, the part died. Anyway to recover them? I did not expect to see any interaction of the SPI and debugWIRE myself? -- http://www.wearablesmartsensors.com/ http://www.softwaresafety.net/ http://www.designer-iii.com/ http://www.unusualresearch.com/ _______________________________________________ AVR-chat mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/avr-chat
