direction for stm32 ARM cortex-M0 building. Also adding more explicit
error message if VID/PID of device found, but unable to open due to
drivers not being installed.
Got quite a bit done since last commit, and never committed all the
changes. Most should be fine but need to review a little more before
I'm ready to commit those. Mostly was in a rush to get SF2 working and
then took a break before cleaning up and committing progress.
Once old SF2/SNES STM8 updates committed, need to move on to supporting
NES mappers. Also in a bit of a rush to verify new STM8S001 can be
programmed via CIC CLK on inl6 devices. Also need to get JTAG up and
running to make progress on SNES v2 board design.
Figured out problem with STM32F070 bootloader, basically broken for
16Mhz crystals because ST doesn't do adequate testing on their
bootloader code to verify datasheet and AN specs of allows xtal
frequencies. 4, 8, 12, & 24Mhz tested and working, also STM32F072
works. Have dumped bootloader and started analysis. STmicro isn't
offering any help to fix issue, bunch of jackasses! Oh well, plan is to
establish my own bootloader means which has benefit of allowing me to
define however I'd like. Planning on LED pin held high triggering
bootloader which would require smallest erase/write protected sector to
be devoted to my bootloader similar to how things were done for AVR.
After detecting bootloader, initialize HSE and jump to ST's bootloader
code so don't have to write my own USB drivers for the bootloader alone.
-Updated STM devices to always run @ 48MHz
Doesn't seem to cause any problems with SNES flashing couple thousand SF2
boards have been flashed with this build without issues
-Added note to usb_operations.c as manf/prod ID can't be read if drivers
aren't installed. Caused issues for Todd as he hadn't installed drivers
for new hardware.
-STM swim operations are working pretty well for SNES v2 and v3 boards
Haven't even touched SWIM on AVR core yet...
SWIM is pretty pin independent but only implemented on EXP0 so far
Reads "ROTF" aren't bullet proof but they're pretty good. Biggest
room for improvement aside from adding a legit pullup would be to have
an interrupt trigger the device header bit falling edge instead of the
current polling method which has decent amount of jitter.
Implementing interrupts would also probably allow for more easily
supporing reads longer than a single byte...
Able to read PRG-ROM flash chip's manf and device ID from commandline.
New dictionaries io and nes along with firmware files to support.
now have io_reset, nes_init, and snes_init io.c functions
nes.c functions including discrete_exp0_prgrom_wr and emulate_nes_cpu_rd.
New dictionary.c/.h for host to make dictionary calls easier including
setting proper return data lengths based on opcode.
adding nop command to pinport.h
AVR Memory Usage
----------------
Device: atmega164a
Program: 2960 bytes (18.1% Full)
(.text + .data + .bootloader)
Data: 53 bytes (5.2% Full)
(.data + .bss + .noinit)
Paul blue asus