[avrdude-dev] [bug #29296] warning "can't read memory for cycle count" uploading to xmega

[Joerg Wunsch]

Follow-up Comment #1, bug #29296 (project avrdude):

Your logfile in bug #29019 shows that there is no attempt at
all to read the cycle count data from EEPROM.  This means
that single-byte reading EEPROM data appears to be unsupported
(which would be more serious than just the cycle-count
feature, IMHO).  Can you verify this in terminal mode?

Ah, yes, I see why this happens. avr_get_cycle_count() uses
the programmer's read_byte() method which defaults to
avr_read_byte_default() in stk500.c.  avr_read_byte_default()
wants to issue generic ISP commands (through the cmd() method).
This won't work on the Xmega.

Sorry, I don't have the resources to still maintain the legacy
STK500v1 code.  Patches are welcome.

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