FWIW, I'm still bewildered with regards to the many configu
options during build and deployment, so I thought I'd "cheat" and perhaps
this is the issue (or leading to issues..)
- Given libopencm3-examples, I just navigated down to
stm32/f2/jobygps/miniblink and editted miniblink.c
- my build script just goes to top level of -examples and runs
"make V=1", which effects a built
- my deploy script is hacked up a bit so that it has the 'proper'
(guessing) board/target type information
This implies that the ld-script uses is appropriate, for example;
I'm not really 'with it' regarding this yet; I imagine its using this one:
/* Linker script for Olimex STM32-H103 (STM32F103RBT6, 128K flash, 20K
RAM). */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 256K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f2.ld
I'm obviously not using an Olimex board.. just a STM32 F205RE
right on a breadboard, by itself. I think the addresses are right, but the
rom-size and ram-size are likely incorrect.. I'll fix them.
The deploy script is:
openocd -f interface/stlink-v2.cfg \
-f target/stm32f2x_stlink.cfg \
-c "init" -c "reset init" \
-c "stm32f2x mass_erase 0" \
-c "flash write_image miniblink.hex" \
-c "reset" \
-c "shutdown" $(NULL)
This is cribbed from existing openocd step, but I modified to use
the stlink target and interface. I'm not sure if I set the right ones, but
it seems right. At least, it works..
.. where works means I can blink a LED using a polling timer, but
not an isr one ;)
Is it possible I'm not including appropriate ISR tables into the
binary, or other subtlties?
jeff
On Mon, 13 Jan 2014, skeezix wrote:
#
# Here is the code in question:
#
# http://pastebin.com/xTxn5829
#
# To summarize -- just polling the timer works fine; but my attempt
# at enabling the ISR isn't working, so I'm probably missing a register
# setting somewhere :)
#
# If you fine people come up with anything, let me know ;) (theres
# about a 90% chance I'll figure it out as soon as I hit 'Send', of course.
# I'm good at foot-in-mouth-mailing-list.)
#
# libopencm3 seems good at supplying wrappers for the CMSIS level -
# so its a good HAL library - but perhaps it could use another layer of
# convenience functions (though finding the right granularity that doesn't
# hide the flexiblity, may be impossible. So maybe as-is, with examples, is
# the way to go, and I need to figure it out and supply an example for this
# topic :)
#
# jeff
#
# On Mon, 13 Jan 2014, Jeff Mitchell wrote:
#
# #
# # I've got 3 or 4 different attempts all fragmented together, but I can
appreciate not being given the whole picture :) Many ways to achieve similar
goals :)
# #
# # I'll fiddle some more after kids go to bed and see if I can come up with
something; otherwise I'll split them apart and post the whole attempt in a
cohesive fashion.
# #
# # Will also check F4 .. F2 has limited examples :)
# #
# # Thanks guys,
# #
# # Jeff
# #
# # --
# # Have you played Atari today?
# #
# # > On Jan 13, 2014, at 5:53 PM, Chuck McManis <[email protected]>
wrote:
# # >
# # > Hi Jeff,
# # >
# # > I'm having a really hard time reading your source code as fragments.
# # > For example in your timer2_setup there is a "#endif" in the middle of
# # > it, where is the preceding #if? Did the timer code get compiled in?
# # >
# # > It looks like you've got the basic concepts there but it is hard to tell.
# # >
# # > I only see the 'jobygps' systems as an F2 example system in the
# # > libopencm3-examples repo but if you look at some of the other examples
# # > they might show you something you missed?
# # >
# # > Consider setting up a free github account and pushing a copy of your
# # > source there so that it can be read in its entirety, then it will be
# # > easier to talk about things that might help.
# #
# #
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