STM32F072RBT6

[ilias]

Posted on August 24, 2015 at 11:15

Hello,

Can anybody help in order to setup the USART1 on this controller? I have a ST NUCLEO dev. board with this Microcontroller. I don't want to use the Cube generator. I want to use the stdperiph driver without hal abstraction. Can anyone help me for the stperiph driver firmware package I have to use and how to set the USART1?

Thanks in advance.

#usart1 #stm32f072rbt6

[Amel NASRI]

Posted on August 24, 2015 at 12:27

Hi karakiritsis.ilias,

For STM32F0, you have 3 firmware solutions:

1. the Standard Peripheral Library (

   http://www.st.com/web/en/catalog/tools/PF257884#

   ), there are examples under: STM32F0xx_StdPeriph_Lib_V1.5.0\Projects\STM32F0xx_StdPeriph_Examples\USART
2. the

   http://www.st.com/web/en/catalog/tools/PF260612

    package
3. the 

   http://www.st.com/web/en/catalog/tools/PF260157

   package, there are snippet examples under STM32F0xx_Snippets_Package_V1.2.0\Projects\USART

You can select the suitable one depending on your needs.

-Mayla-

[waclawek.jan]

Posted on August 24, 2015 at 14:06

There are also code examples at the end of the RM.

JW

[Tesla DeLorean]

Posted on August 24, 2015 at 16:50

F0 DISCO and NUCLEO stuff for the F0 in [DEAD LINK /public/STe2ecommunities/mcu/Lists/STM32Discovery/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/STM32Discovery/UART%20example%20code%20for%20STM32F0&FolderCTID=0x01200200770978C69A1141439FE559EB459D75800084C20D8867EAD444A5987D47BE638E0F&currentviews=30079]this thread

If your question seems like it might have been asked before, it probably has, please search the forum..

[ilias]

Posted on September 04, 2015 at 13:29

Thank you all for your valuable help! I really appreciate it.

I have managed to port the code to STM32F072RBT6 using the stdperiph driver way.

Now I am dealing with another problem.

I am using the Eval-ST95HF board where I developed my initial code for my application. In this code following the driver of ST95HF I am able to initiate the chip by sending a sequence of commands. For example:

Reset: 0x01

Echo; 0x55

etc...

I am able to verify that I am sending the right commands by using an oscilloscope to check the signals.

The Problem:

 

I have a custom board with STM32F072RBT6 MCU and an ST95HF RF chip. My intention is to have an identical RF operation (that is the reason I had to migrate the code to the new MCU).

I have configured the SPI interface identical to the SPI interface of the Eval-ST95HF board.

However, the signals on the oscilloscope for my board are quite different comparing to signals on Eval board.

Example1:

Eval(STM32F103RGT6): sending 0x55. --> Osciloscope ->

0x55

My board(STM32F072RBT6): sending 0x55. --> Osciloscope ->

0x5500

Example2:

Eval(STM32F103RGT6): sending 0x01. --> Osciloscope ->

0x01

My board(STM32F072RBT6):  sending 0x01. --> Osciloscope ->

0x0100

Example3:

Eval(STM32F103RGT6): sending 0x00. --> Osciloscope ->

0x00

My board(STM32F072RBT6):  sending 0x00. --> Osciloscope ->

0x0000

 

Just to mention that the SPI configuration is identical (by checking the Registers CR1, CR2 and SR)

Thanks in advance.

[waclawek.jan]

Posted on September 07, 2015 at 07:02

You have to write to SPI->DR as a byte, as writing it as a halfword writes one byte to the transmitting register and one byte to the FIFO.

The SPI in 'F0x differs in FIFO from the 'F1x SPI.

JW

[ilias]

Posted on September 07, 2015 at 14:48

Thanks for your reply. It was really helpful.

Indeed I had to use a 8bit sender function for SPI transmit. I was using a 16 bit transmit function by casting the data and it didn't work.

Another important configuration to make it work was to modify fifo reception threshold to  8 bits by using this command:

 SPI_RxFIFOThresholdConfig (SPIx, SPI_RxFIFOThreshold_QF);

And it worked!

Thanks again!