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NUCLEO491RE I2C COMMUNICATION WITH TCA9537

I am using nucleo491re MCU  to communicate with tca9537 GPIO-Expander . I want to use GPIO  for on/off  in tca9537 based on i2c . IN tca9537 I have four resister 1. Input(read) address( 0x01) 2.output (read/write) address(0x02) 3.polarity address( 0x...

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ishu by Associate II
  • 74 Views
  • 6 replies
  • 0 kudos

Resolved! STM32G031: cannot program the Discovery Kit

Hey guys and gals!Just received the STM32G031 Discovery Kit with the stm32g031j6m6 chip in the SO8 package. The thing is all my   attempts to program it failed.When the usb cable is plugged in a 'drive' connects where there are two files:1. DETAILS.T...

MCerv.1 by Associate II
  • 148 Views
  • 1 replies
  • 0 kudos

Bootloader entry on STM32G07x

Hi all, I'm experiencing a strange issue where every once in a while I am unable to enter bootloader on the STM32G0. I have the option bits set correctly and have a hardware push button connected to both nRst and Boot0. I can normally hold the Boot0 ...

Konami by Senior
  • 212 Views
  • 1 replies
  • 0 kudos

Does powering shorted board hurt stm32?

firstly i am new to here, dont know much rules about posting. 1 minute ago i saw post about shorted power dont kills mcu but can it damage stm32?so i shorted my 3d printer board(stm32g0b1ret6 probably) via 3.3v and gnd(general probably). i checked by...

Hoorow by Associate II
  • 224 Views
  • 10 replies
  • 3 kudos

Resolved! Input signal when MCU is powered off

Hello,I will make some probes for reading electrical values (AC, Analog, digital,...), but I'm not sure what happens if I insert a signal to a GPIO when MCU is powered off.I read time ago that all GPIOs are in high impedance state when MCU is not pow...

xisco by Associate III
  • 449 Views
  • 9 replies
  • 2 kudos

stm32g0b1 swd interface not working

Hello community,we made a nice project with TouchGFX and STM32G071C8. We needed increase flash memory. We change mcu to STM32G0B1CE. I cannot this mcu programming over SWD. I use various STM ARMs, has never been such a problem. I test two new mcu wit...

prekop by Associate II
  • 349 Views
  • 11 replies
  • 0 kudos

Resolved! CHOOSE MCU

Hi.I work on BMS. I want a master-slave topology. I want to use 300 slave cards and 1 master card. This BMS is for automotive. I check ST MCU. I guess, The card should be 10-bit I2C. Because I want 300 Slave cards. So, Can you Help me this subject? W...

bngstskn by Associate II
  • 265 Views
  • 9 replies
  • 7 kudos
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