Hi
Are there info about boot mode 1b (upload mode ) and 3b (bootprocess) ?
what the bootloader wait for at 1b? most time then exception : epc1=0x400003638, other 0x0.. whats up
just in time i am in 1b if i go to upload mode (GPIO0 low) and 3b if i go to "start SPI flash" (GPIO0 high). have play a little with pins. think we have more tactics to go in boot options
now, if someone know, how i come out from 1b
"i do not remind me to reconstrict the doings to this frame."
but will try in the meantime, like i sayed:
here comes the reconstruct you can do "follow me" by:
normaly connect and start in appliaction mode.
( high or low allways mean pullup or pulldown, i use 10KOhm)
GPIO0 high
U0TXD high
GPIO2 ( --)
GPIO05 high
boot..
Mode (33)
----
normaly connect and start in upload mode
GPIO0 low
U0TXD (--) [my are here pullup]
GPIO02 low
GPIO05 (--) [my are here pullup]
boot..
Mode (13)
----
now Mode 1b
GPIO0 low
U0TXD (--) [my are here pullup]
GPIO02 high
GPIO05 (--) [my are here pullup]
boot..
Mode (1b)
----
now Mode 3b
GPIO0 high
U0TXD high
GPIO2 ( --)---> put it to high
GPIO05 high
boot..
Mode (3b)
----
what options we have in 1b and 3b?
what are 1b and 3b?
sometimes in 1b exception : epc1=0x400003638, other 0x0.
and one info:
the flash tool can not sync in 1b, so i think, perhabs an other medium that is still missed at this time for upload space is expected?
ok.
you can now comprehend 1b and 3b as here was linked in the thread further above.
perhabs you can confirm or contradict.
next steps are listen to certain pins in 1b / 3b
best wishes
rudi
btw:
if we have 1b, have we 1a too, and the same, 3b, have we 3a too?
and what are they mean? i remind me, to saw onetime a "Xa" but do not have a second chance to go in in this.