Stm32f notes sections 3p1 a 3p4 - Revision history

Ted: formatting, remove empty lines.

2024-02-23T19:12:59Z

formatting, remove empty lines.

Ted: /* ^ NOP function and to implement microsecond delays */

2018-07-27T17:52:27Z

^ NOP function and to implement microsecond delays

Ted at 16:10, 12 June 2018

2018-06-12T16:10:44Z

Ted: 2018-06-13 - Tuesday, Ted moving early STM32F notes from the LPCXpresso article on Neela Nurseries wiki.

2018-06-12T15:58:04Z

2018-06-13 - Tuesday, Ted moving early STM32F notes from the LPCXpresso article on Neela Nurseries wiki.

New page

=== [[#top|^]] STMicro standard peripheral libraries ===

&star; * * NEED TO MOVE THIS STM32F DOC SECTION TO STM32F100 NOTES PAGE ON WIKI * * *

* http://www.st.com/en/embedded-software/stm32-standard-peripheral-library-expansion.html?querycriteria=productId=LN1734

A search at [http://www.st.com/content/st_com/en/search.html#q=stm32f10x.h-t=resources-page=1 st.com] for the header file <code>stm32f10x.h</code> results in two app notes type documents from ST.

* STSW-STM32020 . . . i2c driver demo for stm32F1xxx and other micros,

<i>
Side note: linker files such as ~/Downloads/stm/an3268/stm32vldiscovery_package/Project/Demo/TrueSTUDIO/DISCOVER/STM32F100RB_FLASH.ld describe among other things the memory types, starting addresses and ranges of ST microcontrollers, and probably other manufacturers' microcontrollers too.
</i>



=== [[#top|^]] Crafting makefile for SCD30 demo ===

GNU make define directive:

* https://www.gnu.org/software/make/manual/html_node/Multi_002dLine.html

Also good to know are GNU `make` functions $(error ...) $(warning ...) and $(info ...):

* https://www.gnu.org/software/make/manual/html_node/Make-Control-Functions.html

Detailed logging of compilation, as in `$ make all install 2>&1 | tee make.log` . . . :

* https://gcc.gnu.org/ml/gcc-help/2002-05/msg00029.html



=== [[#top|^]] NOP function and to implement microsecond delays ===

What we're really looking for here is micro-second accurate delay function . . .

* http://patrickleyman.be/blog/stm32f407-delay-with-systick/

* http://dangerousprototypes.com/blog/open-logic-sniffer/

<pre>
/opt/lib/an3268/stm32vldiscovery_package/Project/Examples/SysTick$ ls -l
total 40
drwxr-xr-x 2 veris veris 4096 Oct 18 2010 EWARMv5
drwxr-xr-x 2 veris veris 4096 Oct 18 2010 MDK-ARM
drwxr-xr-x 4 veris veris 4096 Oct 18 2010 TrueSTUDIO
-rw-r--r-- 1 veris veris 3810 Sep 13 2010 main.c
-rw-r--r-- 1 veris veris 1626 Sep 13 2010 main.h
-rw-r--r-- 1 veris veris 2375 Sep 13 2010 readme.txt <-- check this file, refers to implementing one microsecond delay based on 24MHz clock
-rw-r--r-- 1 veris veris 3228 Sep 13 2010 stm32f10x_conf.h
-rw-r--r-- 1 veris veris 4346 Sep 13 2010 stm32f10x_it.c
-rw-r--r-- 1 veris veris 1888 Sep 13 2010 stm32f10x_it.h
</pre>

- 2018-05-01 Tuesday -

ST documentation on STM32F timers:

* http://www.st.com/content/ccc/resource/technical/document/application_note/group0/91/01/84/3f/7c/67/41/3f/DM00236305/files/DM00236305.pdf/jcr:content/translations/en.DM00236305.pdf



=== [[#top|^]] Build and assembly issues ===

Getting errors as though assember <code>arm-none-eabi-as</code> doesn't understand project assembly file comment lines, those which begin with ';':

<pre>
$ make
*** In demo-systick.elf target variable (CC) holds 'arm-none-eabi-gcc',
*** and variable (AS) holds 'arm-none-eabi-as',
arm-none-eabi-gcc -g -O2 -Wall -T/opt/lib/an3268/stm32vldiscovery_package/Project/Examples/SysTick/TrueSTUDIO/stm32_flash.ld -mlittle-endian -mthumb -mcpu=cortex-m4 -mthumb-interwork -mfloat-abi=soft -I. -I/opt/lib/an3268/stm32vldiscovery_package/Utilities/STM32F4-Discovery -I/opt/lib/an3268/stm32vldiscovery_package/Utilities -I/opt/lib/an3268/stm32vldiscovery_package/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x -I/opt/lib/an3268/stm32vldiscovery_package/Libraries/STM32F4xx_StdPeriph_Driver/inc -I/opt/lib/an3268/stm32vldiscovery_package/Libraries/CMSIS/CM3/CoreSupport main.c stm32f10x_it.c startup_stm32f10x_md_vl.s -o demo-systick.elf

startup_stm32f10x_md_vl.s: Assembler messages:
startup_stm32f10x_md_vl.s:1: Error: junk at end of line, first unrecognized character is `*'
startup_stm32f10x_md_vl.s:2: Error: junk at end of line, first unrecognized character is `*'
startup_stm32f10x_md_vl.s:3: Error: junk at end of line, first unrecognized character is `*'
startup_stm32f10x_md_vl.s:4: Error: junk at end of line, first unrecognized character is `*'
.
.
.

</pre>

Reference: https://stackoverflow.com/questions/46106166/assembler-messages-error-junk-when-running-as-on-linux

- 2018-05-02 WED -

Here is an interesting directory in terms of ARM target libraries, and seeming mention of linker scripts:

<pre>
$ pwd

/usr/lib/arm-none-eabi

$ ls

bin include ldscripts lib newlib
</pre>

@@ Line 13: / Line 13: @@
 Side note:  linker files such as ~/Downloads/stm/an3268/stm32vldiscovery_package/Project/Demo/TrueSTUDIO/DISCOVER/STM32F100RB_FLASH.ld describe among other things the memory types, starting addresses and ranges of ST microcontrollers, and probably other manufacturers' microcontrollers too.
 </i>
 <!-- comment -->
@@ Line 30: / Line 29: @@
 *  https://gcc.gnu.org/ml/gcc-help/2002-05/msg00029.html
 <!-- comment -->
@@ Line 62: / Line 60: @@
 *  http://www.st.com/content/ccc/resource/technical/document/application_note/group0/91/01/84/3f/7c/67/41/3f/DM00236305/files/DM00236305.pdf/jcr:content/translations/en.DM00236305.pdf
 <!-- comment -->
@@ Line 103: / Line 100: @@
     bin  include  ldscripts  lib  newlib
 </pre>
 <!-- comment -->
 == [[#top|^]] STM32F register set up and use references ==

@@ Line 45: / Line 45: @@
 /opt/lib/an3268/stm32vldiscovery_package/Project/Examples/SysTick$ ls -l
 total 40
-drwxr-xr-x 2 veris veris 4096 Oct 18  2010 EWARMv5
+drwxr-xr-x 2 user user 4096 Oct 18  2010 EWARMv5
-drwxr-xr-x 2 veris veris 4096 Oct 18  2010 MDK-ARM
+drwxr-xr-x 2 user user 4096 Oct 18  2010 MDK-ARM
-drwxr-xr-x 4 veris veris 4096 Oct 18  2010 TrueSTUDIO
+drwxr-xr-x 4 user user 4096 Oct 18  2010 TrueSTUDIO
--rw-r--r-- 1 veris veris 3810 Sep 13  2010 main.c
+-rw-r--r-- 1 user user 3810 Sep 13  2010 main.c
--rw-r--r-- 1 veris veris 1626 Sep 13  2010 main.h
+-rw-r--r-- 1 user user 1626 Sep 13  2010 main.h
--rw-r--r-- 1 veris veris 2375 Sep 13  2010 readme.txt      <-- check this file, refers to implementing one microsecond delay based on 24MHz clock
+-rw-r--r-- 1 user user 2375 Sep 13  2010 readme.txt      <-- check this file, refers to implementing one microsecond delay based on 24MHz clock
--rw-r--r-- 1 veris veris 3228 Sep 13  2010 stm32f10x_conf.h
+-rw-r--r-- 1 user user 3228 Sep 13  2010 stm32f10x_conf.h
--rw-r--r-- 1 veris veris 4346 Sep 13  2010 stm32f10x_it.c
+-rw-r--r-- 1 user user 4346 Sep 13  2010 stm32f10x_it.c
--rw-r--r-- 1 veris veris 1888 Sep 13  2010 stm32f10x_it.h
+-rw-r--r-- 1 user user 1888 Sep 13  2010 stm32f10x_it.h
 </pre>