heyyy Can you elaborate Connecting the PA13 and PA14 means , I don't have PA13 and PA 14 , but facing this problem

Glad that helped!

That sounds really good. While writing your operating system you will learn a lot. That's the best way to go.

best of luck on writing the operating system buddy

Yes ... the good old days.

I still use it. A friend of mine wrote one for the STM205/405 family that can be found by searching Space-Time Productions Forth STM205. It is a fig Forth so all the old stuff is (mostly) valid. Some new stuff has been added. All in 16K of Flash. Also one for the LPC1114/1115 family.

You are welcome! Glad it was helpful.

Were those the data pins? Same thing with the China ESP32 with Camera and ESP8266.

Glad I could help.

You're welcome! Glad it helped.

Thanks for the feedback! I program in Forth which has a built in debugger. In Forth you compile small chunks of code called words. These words are tested and then used as building blocks to make up your program. The onboard Forth contains the compiler, interpreter and assembler running on the blue pill. To debug, all words can be run independently on the command line and tested thoroughly. All my videos that involve microcontrollers and coding are written in Forth.

You're most welcome!

Yeah mine is different too

The Arduino UNO/Nano and the STM32 ARM Blue-pill are the best cost effective platforms to start with. The Arduino would have the smaller learning curve as compared to the ARM Blue-pill. Once you grasp the Arduino IDE you can also use it to program the Blue-Pill. I also have done a lot of assembler/machine coding on the 6805 and many other micros of the 70's. The programming language I use in all my videos is Forth which was popular in the 70's. Arduino or the Blue-pill would be suitable for your project and there is lot of free software and tutorials online.

0033mer - thanks for your prompt informative reply - much appreciated.

Yes ... I guess that will become my trademark.

your trademark is your way in teaching that is so special and useful! @@0033mer

Double check all your connections and then watch this video at the 16 min mark: kzfaq.info/get/bejne/gc2ajK2oxJ6UdHU.html

@@0033mer dude your freaking fast. but it was not that (the st-link did not work), the programmer hat an old firmware that was not supported. You can flash it, but only if you re-plug it in and hit connect to device in the firmware flasher at the same instance

Most welcome

Welcome!

Glad I could help

You're welcome!!

Glad I could help.

The program was written in Forth. www.forth.com/

Check out this video: kzfaq.info/get/bejne/bteVqaSEt9DOdac.html

If you are serious about getting familiar with STM microcontrollers use STM32 Cube for programming and STM32 Cube programmer for programming. The Nucleo board has the ST Link programmer onboard so you don't have to buy a dongle.

You can download STM32Cube for MAC OS: www.st.com/en/development-tools/stm32cubeprog.html

Glad it helped!

Forth is extendable so you make up words as you go along. This makes everybody's Forth different. The Mecrisp word-set has all the code needed to build any program. : ms 0 ?do #1000 0 do nop loop loop ; : seconds #1000 * ms ; : beep 07 emit ; If you're a beginner to Forth you should have a look at the Scamp board which has all the support words needed already coded onboard. Check out some of my recent videos.

I need the STM32F103C8T6 model

The STM32F103C8 has 64K while the STM32F103CB has 128K Flash. To keep the manufacturing cost effective STMicroelectronics uses the same die for both parts so all STM32F103C8 devices have 128K but the upper half 64K is not tested and not guaranteed, and labelled as STM32F103C8. Manufacturing of Bluepill devices is slowing down so you might want to look into the Blackpill STM32f411. Here is a link where I got my Bluepills: www.banggood.com/STM32F103C8T6-System-Board-Imported-SCM-Core-Board-STM32-ARM-Development-Board-p-1825857.html?cur_warehouse=CN&rmmds=search

Yes .. select Device Memory -> Save To File

@@0033merok Thanks

The ST dongle is used to program a hex file into flash memory using ST-link. The FTDI was used to test out the software I uploaded ( Forth compiler ). The FTDI is not used for programming.

0033mer thanks to answer me :) So, why are they using ftdi with arduino (e.g pro mini) to upload their sketchs? St -link means upload just a .hex file direct to chip, instead ftdi with compile inside arduino's ide?

The Arduino UNO and Nano have an onboard FTDI and the Pro Mini does not so you need to supply your own. ST-link is for STMicroelectronics ARM micros and the Arduino IDE is for Atmel AVR micros. The Arduino has an onboard bootloader and loads the sketches via the FTDI. STM32 micros use ST-link to load hex files to the Arm micro.

0033mer I got this board on video and I would like to know if I can upload any .hex to it, with st-link adapter, even if it comes with factory or arduino' bootloader. Of course I have a ftdi adapter, but someone has uploaded a.hex using st-link adapter, instead ftdi and I don't know how bootloader it has.

If you have a Bluepill module you can upload a hex file using the ST dongle via SWD or you can upload a hex file through the serial port using a FTDI. Pick the one that is easiest for you. kzfaq.info/get/bejne/bteVqaSEt9DOdac.html

Do a full erase of the chip so it is blank, and then try to connect.

@@0033mer oh, yes, that is what i did yesterday. I used pure vodka to brush the chip. For now it works. It responds 128k flash. Actually, it was stm32f103cb, it was not stm32f103c8. It cost $2. That is why the chip was not cleaned by spirits / chemicals to remove the soldering dusts. Thanks for your support

SWD was done via st-utility on windows 10. file.bin programmed with OK. But, in Ubuntu, via cmd line as st-flash write me.bin 0x08000000 did not work. I wonder why ! st-info --probe was OK that says it has 128k flash 20k ram. Any idea with that ?

You're welcome!

If you get no response at all from your computer when you plug in the dongle, it has failed. I have seen dongles that have been mislabeled or the wrong driver has been installed. You can use a Discovery board as a programmer or use the serial bootloader. kzfaq.info/get/bejne/bteVqaSEt9DOdac.html

Run ST-Link and select Target --> Erase Chip and then do a Blank Check.

@@0033mer thank you so much .🙏 I have erased chip with flashloader before i see your comment.

Target -> Connect -> File -> Save File as ... Select Hex or Bin and give it a name.

Use ST-LINK utility to erase the flash memory to bring it to factory settings. Mecrisp is a programming language (Forth) and an operating system that runs onboard the microcontroller. sourceforge.net/projects/mecrisp/files/

You can try downloading just the Flash loader. www.st.com/en/development-tools/flasher-stm32.html

No .. SWD is a two wire interface used for programming and debugging. It is basically an alternative JTAG. If you want to use the SWD for debugging check out the Black Magic Probe.

No, not with the bluepill module but you can if you use one of STMs Nucleo boards.

@@0033mer thanks!!

You can use a USB to TTL converter connected to the serial port to program the Blue Pill module using Flash Loader software. Check out this video: kzfaq.info/get/bejne/bteVqaSEt9DOdac.html

i just downloaded w/o registering. they sent download link to my email addr.

If you are using the Arduino IDE to program the STM32 Blue-Pill you will have to use the serial bootloader.

0033mer After to get the serialboot onto bluepii shoud I have to use ftdi or not?

sourceforge.net/projects/mecrisp/

ARM is a complex architecture so I would stick to the manufacturer's IDE and programming tools.

0033mer , I can do complex (I developed on msp430 for a long time). But I'd rather not. Which is why I'd like to use the Arduino libraries. Debugging the same would be nice.

Select Target -> Connect To Device : contents of memory will be displayed Click on disk icon to save displayed content to .bin file. Select Target -> Program/Verify and select saved .bin file to program into second Bluepill.

@@0033mer Do i have to have the 2 bluepills connected at the same time, sorry but i never done anything like it, i got the st-link v2 and the stlink0004 software, i guess i can always do what you are saying then connect second bluepill and upload the whole .bin i copy from the first one?. Thanks?!?!

Yes, download the memory from the first bluepill, then connected the second and upload.

@@0033mer Thanks, will try.

yes look up openocd and arm-gdb

Some boards support SWIM ( Single Wire Interface Module) with a 4 pin flat cable.

No .. check out this video for pro mini programming. kzfaq.info/get/bejne/o6d9atZqx7Gphqc.html

File -> Open File -> Select .bin file -> Target -> Program & Verify -> Start

@@0033mer very very thank U bro!!

It goes to GPIO pin PC13 (pin2). 3.3v -> Resistor -> LED -> GPIO PC13

All the tools needed to program a STM Nucleo board are included in the Cube IDE. The bluepill can also be programmed using Cube IDE with Keil. Check out this video: kzfaq.info/get/bejne/gbykotBpruC6j4U.html

@@0033mer Thank you very much for returning. I managed to flash using Keil, but using Cube IDE I always get this error: Open On-Chip Debugger 0.10.0+dev-01193-g5ce997d (2020-02-20-10:57) Licensed under GNU GPL v2 For bug reports, read openocd.org/doc/doxygen/bugs.html none separate Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD adapter speed: 8000 kHz adapter_nsrst_delay: 100 Info : Listening on port 6666 for tcl connections Info : Listening on port 4444 for telnet connections Info : clock speed 8000 kHz Info : STLINK V2J36S7 (API v2) VID:PID 0483:3748 Info : using stlink api v2 Info : Target voltage: 3.247619 Info : SRST line released Warn : UNEXPECTED idcode: 0x2ba01477 Error: expected 1 of 1: 0x1ba01477

The cube IDE is designed to work with STM Nucleo boards and I only use them together. When programming the Bluepill or Blackpill I use ST Link and the dongle.

There is a special low power consumption series of this controller, the L series.

wiki.stm32duino.com/index.php?title=Blue_Pill

USB to serial FTDI module. www.amazon.ca/FT232RL-Serial-Adapter-Module-Arduino/dp/B00HSX3CXE

I use 63/37 Eutectic solder with Kester 44 RA flux. It is actually better to leave the flux on which poses no problem to the PCB. A big misconception is to use Isopropyl alcohol to clean flux residue but that is the worst thing to do as it draws in moisture to the solder connections. Proper flux remover must be used. Kester recommends leaving the flux residue on under normal conditions and use the proper chemical if you want it removed. www.kester.com/DesktopModules/Bring2mind/DMX/Download.aspx?EntryId=1072&Command=Core_Download&language=en-US&PortalId=0&TabId=96

After some time the flux absorbs moisture and begins to conduct. I usually remove with a needle - scratch it off.

I use straight Eutectic solder with no-clean NC120 flux which can be left on. Actually cleaning it with alcohol can make it worse as it is Hygroscopic and can absorb moisture which can cause white powder residue on connections. www.techni-tool.com/site/ARTICLE_LIBRARY/ACL%20Staticide%20-%20Flux%20Cleaning%20Myths,%20Basics.pdf

And where are your videos? If you are going to condemn someone at least have something better to show the world.

Not mine but this one is clear to understand and follow: kzfaq.info/get/bejne/sLubY89_ltWpp4U.html