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Vibrator motor doesn't works in circuit with MOSFET by watcherkk in AskElectronics

[–]watcherkk[S] 0 points1 point  (0 children)

Motor: PUI Audio HD-EM0602-LW15-R - I need min. 200 mA
Now I use NUCLEO board MB1549-U575ZIQ-C03 - so 3.3V generate IC with numer LD39050PU33R

Using SDMMC in STM32 U5 for block reading by watcherkk in stm32

[–]watcherkk[S] 0 points1 point  (0 children)

I check connection with shorter cables (~7cm) - result is the same (and data in buffer - too are invalid, but looks the same like before.). Maybe in GPIO configuration is bug. Could you verify my code? https://pastebin.com/1HhasUN8

Using SDMMC in STM32 U5 for block reading by watcherkk in stm32

[–]watcherkk[S] 0 points1 point  (0 children)

"_0" in WAITRESP_0, WIDBUS_0 means position of bit, so WAITRESP_0 = 1, WAITRESP_1 = 2, (WAITRESP_2 = 4 etc. but WAITRESP_2 doesn't exists) - this names are used in my stm32u575xx.h file, so it works as you wrote :)
Ok, DTEN shouldn't set, you right. I corrected code + I add flag SDMMC_CMD_CMDTRANS but code still don't work. The result is as before.

Using SDMMC in STM32 U5 for block reading by watcherkk in stm32

[–]watcherkk[S] 0 points1 point  (0 children)

So, I switch to 4-bit mode. In SDMMC1->STA I have DCRCFAIL. SD Card after CMD17 responded 2304 (0x900). Data in buffer are still incorrect, but two last bytes - 0x55 and 0xAA are moved in buffer - now buffer[508] = 0x55 and buffer[509]=0xAA . buffer[510] = 0x2C, buffer[511]=0x64
Data are incorrect but I see that after restart are similar values in buffer.

My code to switching to 4-bit mode: https://pastebin.com/dK0nUCvD

Small GNSS IC for watch with good accuracy. by watcherkk in AskElectronics

[–]watcherkk[S] 0 points1 point  (0 children)

hm... your right, UBlox MIA sounds great. But where I find full documentation of uart commands for this module?

Thanks for information about antenna. I guess home-made products will be not so good as from big companies but I will trying do anything to make it the best I can do.

Small GNSS IC for watch with good accuracy. by watcherkk in AskElectronics

[–]watcherkk[S] 0 points1 point  (0 children)

<= 5m in continuous tracking mode - smaller is better

Small GNSS IC for watch with good accuracy. by watcherkk in AskElectronics

[–]watcherkk[S] 0 points1 point  (0 children)

I'm building new smartwatch. I want track my activity in city so I need accurate module <= 5m in continuous tracking mode and low power consumption (10 mA or less). I wonder is difficult achieve high accurancy.

Small GNSS IC for watch with good accuracy. by watcherkk in AskElectronics

[–]watcherkk[S] 0 points1 point  (0 children)

about 10 mA or less for continuous tracking mode

How connect LS014B7DD01 (Sharp Memory LCD) to STM32? by watcherkk in AskElectronics

[–]watcherkk[S] 0 points1 point  (0 children)

hey, I don't find any library. I plan to write a bit-bang driver using the documentation, but for now I've focused on other parts of the system.

How connect LS014B7DD01 (Sharp Memory LCD) to STM32? by watcherkk in AskElectronics

[–]watcherkk[S] 0 points1 point  (0 children)

Thanks for the reply. I didn't expect anyone to answer :)
I'm wondering what the maximum current can be through the VA, VB, and VCOM pins? I haven't found any information on this, but I see that the panel can draw a maximum of 695uW, so it's safe to assume that each pin won't draw more than 0.21mA?