2013-03-20 11:17 AM
hi
now I
am trying to
achieve
a
basic
equipment
card
STM31
-P103Olimex
of
(
STM32F103RB
microcontroller
),I used
the
Flash
loader
demonstrator
program
for
the card (
boot0=1boot1
= 0) and i chose COM3, baude=115200, parity=None, Echo=Disable, Time out=10
but it always
displays the
following error
:''no response from the target the boot loader can not be startedthank you for
your help''
thank you for
your help.
2013-03-25 04:53 PM
Here is a
that
represents
my problem
this
configuration it is
possible
???
________________ Attachments : Doc1.pdf : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HtVe&d=%2Fa%2F0X0000000aR3%2F7.kZebevE9Q3YD_2PjtScJ8x7no..U1uLyRB8rL2yVA&asPdf=false2013-03-26 01:33 AM
''Here is a PDF that represents my problem. this configuration it is possible?''
Already answered in your other thread on the same question:
/99ba287d
2013-03-26 01:43 AM
Trying to work without JTAG is sheer folly!
You are clearly struggling, so don't make life any harder for yourself than it needs to be - get a ready-to-use JTAG adaptor!
I would strongly recommend that you follow clive1's suggestion to get a Discovery board - they come complete with a built-in program/debug adaptor. Once you have built up your basic skills on the Discovery board, you can then progress to the Olimex board, if that is still appropriate
2013-03-26 01:57 AM
Rather than mess with RS232 transceivers (which seems to be somewhat out of your comfort zone?) I would suggest that you use something like this:
It just plugs into a USB port on your PC, and appears to PC apps as a perfectly standard COM: port. The other end provideslogic-level signals for direct connection to a microcontroller's UART pins (be sure to get the correct voltage version; 3V3 or 5V). There's also this version, which provides just Rx, Tx, and GND as individual pins - so you don't have to worry about matching the multi-way connector pinout: (they call it ''Raspberry Pi Cable'' - but it really has nothing specific to the RPi).2013-03-27 10:36 AM
I can
solve
the problem, thank you for your help
just I have other questionI have
just
one
question:
I would like
to use the
real-time clock
(RTC)
in the
STM32
-P103Olimex
board
, I usedMikroC
pro
software
for ARM
programming
.I
selected
frequency
as
70MHz
and I test
a simple program (
LEDblink)
and
the program
works, but
when I
configure
the
real-time clock
(RTC)
I see that the
program
does
not work and
the LED does
not
blinking
.
I think
the problem
at the level of
the clock
that is
to say
:STM32F103RB
the microcontroller
uses
the internal clock
??
?
and thank you2013-03-27 11:22 AM
Sounds like a coding error, using code I can't see, on a platform I'm not using.
2013-03-28 11:27 AM
thank you very much
I
have another question
regarding the
RS232
communication
between my
PC
and the board
STM32-
P103.in
the first
time I
test the communication
by:
-
Shorted
TX with
RX
ofmy card
I see that
my program
it works but
when
I do
communicate with
my PC
using
software
Tera Term
VT
I don't receive any
data in
window
of
Tera Term
VT?
???and thank you.
2013-03-29 10:22 AM
I have a question regarding the RS232 communication (USART2), in a firsttime I tested the RS232 PORT of my STM32-P103 board by shortcircuited TX with RX I noticed that the communication it works well as Itest the PORT of my PC I see that the communication it works well butwhen I connected the RS232 PORT of STM32-P103 card with PORT RS232 ofmy PC and I used Hyperterminal to test it, I don't received anycharacter I think the problem is at logic level between the PC and thecard but I do not know????
and thank you for your helpI have a question regarding the RS232 communication (USART2), in a firsttime I tested the RS232 PORT of my STM32-P103 board by shortcircuited TX with RX I noticed that the communication it works well as Itest the PORT of my PC I see that the communication it works well butwhen I connected the RS232 PORT of STM32-P103 card with PORT RS232 ofmy PC and I used Hyperterminal to test it, I don't received anycharacter I think the problem is at logic level between the PC and thecard but I do not know????and thank you for your help2013-03-29 11:45 AM
Or the sense of the cable is wrong. There are a couple of ways to wire RS232 connectors, and male-female orientations.
Do you need a straight through connection (Extention, M-to-F), or a cross-over (NULL Modem) type cable? The transmitting signal at one end needs to connect to the receiving end at the other, the designation may not be coherent, you need to go with the electron flow and not how something might be labelled. Use a scope if you have to. The USART TX on the STM32 is the outbound signal, always.2013-03-29 11:57 AM
clive1
thank you
but I do not
understand
.I also
did not understand ''
The USART TX on the STM32 is the outbound signal, always''.