Bugfixes:
-remove ftdi_usb_purge_buffers(), since it does not flush, but clear buffers
-fix bad polling in avrftdi_flash_write() where it was possible to poll a 0xff
value.
Maintenance:
-use #defines from libftdi for MPSSE commands where applicable
-reformat E() and E_VOID() macros
-remove TYPE_* macros
-clean up private structure (remove pin_inversion, type and ftype)
-adds ftdi_pin_name() to turn a (FTDI) pin number to a human readable string
-adds avrftdi_print to encapsulate "if(verbose > c) fprintf()"-idiom
-nicer / better understandable (I hope) output
-removes pin_limit() and adds a member in the private data structure.
TYPE_* macros can be removed; decision is made from (struct ftdi_context).type
-add_pin(s)() functions reworked. parameters are validated first, if everything
is alright, pin_value is modified. pin_inversion mask is not needed; use
PIN_INVERTED instead
-change set_pin(s)(), so that it gets the pin value used by avrdude (and not a
bit mask). This way, PIN_INVERTED is usable and pin_inversion is not needed.
Plus, the interface is consistent with the add_pin() signature. Also move
parameter validation to the start of the function. I also commented out the
warning, that a pin is not defined, because it is annoying.
-clean up avrftdi_open(): first parameter validation, then USB lookup, interface
initialization then pin setup
-avrftdi_eeprom_read/write() and avrftdi_flash_read/write(): convert to new
calling scheme, where every paged_* function is called once for every page
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@1098 81a1dc3b-b13d-400b-aceb-764788c761c2
5aaecc6ae7