STM32 MCUs Products

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Resolved! STM32G070RB Vbat Data sheet error

According to the data sheet, sec 3.13.3 says the VBAT voltage is measure by the ADC as VBAT/3, or one third Vbat.using : uint64_t volt = (uint64_t)(((uint64_t)3300U*adc_result)/(uint64_t)4095U);I get 2/3 VbatChanging to uint64_t volt = (uint64_t)(((...

MEder by Associate III
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  • 6 replies
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Code does not execute until ST board manually reset.

I wrote a simple LED blink program using STM32F767zi board. It works properly when I use STLink debugger. but the problem is when I remove the STLink and connect the board directly to an external power source, the code does not execute until I manua...

KMale.1 by Associate II
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  • 5 replies
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Nested interrupts STM32L4

Hello,I have an interrupt driven I2C which is working fine. I know that this is not very clean design but I need to execute few I2C transactions from a button interrupt handler (EXTI9_5_IRQn). I have set the priority of the EXTI9_5_IRQn 1 and the pri...

dpn by Associate II
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  • 6 replies
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Resolved! STM32L151CCT6 nRST is floating ?!

Hello developers, I have three custom pcbs. The heart of all pcbs is the STM32L151CCT6 µC in LQFP48 Package. I connected all supply pins (VLCD, VDDA, VDD_x to 3.3V; VSS_x to ground). The BOOT0 pin is connect to gnd with an 20k pull-down resistor. The...

TJ1999 by Associate II
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  • 8 replies
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CAN-BUS Rx callback triggered infinitely many times.

Dear community,I have setup a can-bus system between two devices where: the first transmits a message on button press using HAL_CAN_AddTxMessage, the other one receives the message using a callback interrupt. However, the following problem arises: on...

KMoe.1 by Associate
  • 328 Views
  • 0 replies
  • 1 kudos