Firmware for Open Programmer project,
an USB programmer for PIC and ATMEL micros, I2C memories, and other I2C/SPI devices.
This firmware is based on the USB firmware released by Alexander Enzmann.
All functions are in OPcontrol.c, which is released under GPL2 license.
V 0.3.0 july 2008: first public release, supports PIC ICSP protocol (PIC10,12,16,18).
V 0.4.0 august 2008: added I2C protocol.
V 0.5.0 november 2008: added SPI protocol and some ATMEL specific instructions.
V 0.6.0 june 2009: switched to GPL USB framework, added instructions for PIC24 and microwire.
V 0.6.1 august 2009: switched to software SPI due to some bugs in the hardware peripheral.
V 0.7.0 january 2010: added some PIC24 instructions, hardware ID.
V 0.7.6 july 2010: modified TX16 and RX16 with variable clock period; fix for 12 bit ADC.
V 0.8.0 june 2012: added one-wire and UNIO protocols; tx buffer sent automatically when rx is
elaborated; fixed PROG_C.
V 0.9.0 january 2014: added instructions SET_PORT_DIR, AT_HV_RTX, SIX_LONG5; improved DCDC control algorithm.