Question and suggestion for Mastering STM32 eBook

[olivier.cornez@me.com]

Hi Carmine,

Playing with interrupts and chap7 I realised CubeMX did not set the PULLDOWN resistor for the User button on my L152RE.
While it is correctly described in your book I do not understand why ST skip it.
First time I saw his I thought maybe they add a resistance on the board but playing with interrupts proved I was wrong and of course the IRQ seemed very weird during debug.

Maybe it would be nice to add a tip into the cubemx section of the book.

Kind regards,
Olivier

[bobbydigital]

Hi Carmine,

Looks like link for footnote 10 in sect. 25.1.3 (pg. 740) is down.

[olivier.cornez@me.com]

Hi Carmine,

with a lot of respect for your great work I think it would be nice if you add more details and explanations to I2C chapter 14.
There are a lot of Flags and functions and it was a hard time trying to find docs and samples on ST and NXP websites.

Kind Regards,
Olivier

[dsteinwe]

Hi Carmine,

currently, I try to write an application, that is using spdif. I stick on using spdifrx with dma and I have no idea, why my application is not working (https://community.st.com/thread/37147-problems-with-spdif-rx-and-dma). I don’t know, if it is possible, but may you write a chapter you to analyse systematically problems like mines.

– Dieter

[Carmine Noviello]

bobbydigital wrote:

Hi Carmine,

Looks like link for footnote 10 in sect. 25.1.3 (pg. 740) is down.

Thanks. Fixed.

[Carmine Noviello]

dsteinwe wrote:

Hi Carmine,

currently, I try to write an application, that is using spdif. I stick on using spdifrx with dma and I have no idea, why my application is not working (https://community.st.com/thread/37147-problems-with-spdif-rx-and-dma). I don’t know, if it is possible, but may you write a chapter you to analyse systematically problems like mines.

– Dieter

Unfortunately I’ve no experience with this peripheral.

[mbutura]

Hi Carmine,

Great book. Certainly the best I have read next to Joseph Yiu’s book.

There is an error in the UART implementation via polling example code page 241 there are literal character arrays that lack enclosing quotes, they are:

1. WELCOME_MSG
2. MAIN_MENU
3. PROMPT

Best,
Mbutura.

[svobodv]

Hi Carmine,

in chapter 6.2.1 at page 186 you wrote that “there is no need to use external pull-up resistors to drive I²C devices, since the corresponding GPIOs can be configured…”.
Value of internal PU-PD for mentioned STM32F030 is typically 40k, and thats not enough for any reasonable speed of I2C. I would use 4k7 for 100kHz, 2k2 for 400kHz and 1k2 for 1MHz.

Anyway, thank you for great book, and keep up the great work.

Vojta

[Carmine Noviello]

svobodv wrote:

Hi Carmine,

in chapter 6.2.1 at page 186 you wrote that “there is no need to use external pull-up resistors to drive I²C devices, since the corresponding GPIOs can be configured…”.
Value of internal PU-PD for mentioned STM32F030 is typically 40k, and thats not enough for any reasonable speed of I2C. I would use 4k7 for 100kHz, 2k2 for 400kHz and 1k2 for 1MHz.

Anyway, thank you for great book, and keep up the great work.

Vojta

Thanks. Your are right. That’s not correct.

[RRK]

hi,

I am interested in learning the NUCLEO-F767ZI and it has an internal ethernet and DAC modules. Will your future book release include these topics and internet of things? And if yes, roughly when is the expected release? If I purchase the book now, will I be able to download future releases?

Thanks.

[Carmine Noviello]

RRK wrote:

hi,

I am interested in learning the NUCLEO-F767ZI and it has an internal ethernet and DAC modules. Will your future book release include these topics and internet of things? And if yes, roughly when is the expected release? If I purchase the book now, will I be able to download future releases?

Thanks.

The next release of the book will have a chapter about IoT applications. However, it won’t cover ST MCUs with dedicated Ethernet controller. The chapter will be based on the W550 IC from Wiznet.

[jaikumar]

Hi,

Please include a chapter on Opamp, Comparator and RTC included in STM32 parts.

Thanks and Regards,
Jai.

[bdang]

Hi,

Typo on page 142:

while(1) {
75 HAL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin);
76 HAL_Delay(500);
77 }

The pin was named LED in the Cubemx example, not LD2 which will cause the errors.

Best,
Brian

[shan_rei]

I finally got started reading your book. I have to say you’re doing a really great job, congratulations! I have just a little issue about the labels of the figures and tables. When the book says “Table 1” or “Figure 1”, I get confused whether it refers to the “Table 1” at Chapter 1 or “Table 1” at some other Chapter. Can I suggest that the tables and figures be labeled to make them “belong” to the certain chapter that they appear? Like “Table 4-1” if the Table 1 is in Chapter 4 or “Figure 5-1” if the Figure 1 appears in Chapter 5? This might seem insignificant but I believe it would really make reading and referring a lot easier and less confusing. Thank you very much!

[mzaffalon]

Hi Carmine,

In section 9.2.7 of version 0.22 of the book, you remark that one should enable the UART interrupt for DMA transfer, but as far as I can tell, you don’t explain why. Could you add a line in the book or a reference to the place where you give the explanation?

(In an official MOOC class from ST on the CubeMX, for instance, there was no mention of enabling the UART interrupts.)

Thanks,
michele

[Author]

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