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AVR109: Self Programming
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From Atmel Corporation
This application note describes how an AVR with the Store Program Memory (SPM) instruction can be configured for Self-programming. The sample application communicates via the UART with a PC running the AVR Open Source Programmer (AVROSP) from Application note AVR911. This enables Flash and EEPROM programming without the need for an external programmer. The code is also compatible with AVRProg (only for devices supported by AVRProg). A Boot Loader program is placed inside the Boot Section of the Flash memory. This program handles communication with the host PC, and facilitates programming of both Flash and EEPROM. Once programmed, different levels of protection can be individually applied to both the boot and application portion of the Flash memory. The AVR thus offers a unique flexibility, allowing the user extensive degrees of memory protection. Products & Services
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