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Forum Posts

I2C communication halted in HAL_GPIO_EXTI_Falling_Callback

I'm a biginner on embedded programing and facing an I2C communication halt issue when I put HAL_I2C_Master_Seq_Transmit_IT() in HAL_GPIO_EXTI_Falling_Callback(). STM32CubeIDE: Version: 1.6.0, Build: 9614_20210223_1703 (UTC)Target board: NUCLEO-G031...

MMish.2 by Associate
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  • 2 replies
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Sigma-Delta ADC STM32F373 calibration problem

Hi,I have connected three channels of the SDADC in the STM32F373 with an external voltage reference of 1.225V. The selected mode of the ADC is Single-ended zero-volt reference mode, and i am reading these channels using the "injected conversion" as i...

DCajigal by Associate III
  • 1982 Views
  • 5 replies
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complementary PWM I want to create the complementary PWM pulses in timers, for pulses with a specific dead time.

I actually need 6 Plus. (3 pulses (not) are other pulses). I have generated 4 pulses with two timers 1 and 8 and I need to generate two more pulses, but I can not produce dead time with advanced timers. I have used advanced timers and I need to have ...

amir_pdn by Associate II
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Resolved! Can VREF+ be zero?

In STM32F437 data sheet it says VDDA - VREF+ < 1.2 V.Is that a "global" limitation or just a working limitation?If VDDA is 3.3V and VREF+ is 0V, can that harm the chip, or is it just that the conversions don't work right?

Problem with code slowness

Hi all,​I am using the Delay​ function as follows.static void Delay(volatile int d) {  d = d*20;  while (d--) asm volatile("NOP"); }​​However, sometimes when adding printf code, Delay function becomes slow.So, when I analyzed the cause, I was able to...

sim20 by Associate II
  • 560 Views
  • 1 replies
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Utilize SDRAM on STM32H743 EVAL2 Board

I'm having trouble making use of SDRAM (external device memory) on the STM32H743 EVAL2 board. Specifically, I'm trying to make use of FMC SDRAM Bank 2 (Region: External Devices) to store a large array. Here are code snippets that I have added/modifi...

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matt12345 by Associate II
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  • 7 replies
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STM32L412 UART bootloader not writing data

Hi, I'm curentlly in the process of switching to a STM32L412 from an STM32F3 on a custom design and I'm having an issue with the UART bootloader. The bootloader worked as intended on the F3 chip but on the L4 chip I can't write to the chip. Everythin...

fabces by Associate
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  • 1 replies
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Resolved! How to add fsdata.c file to project?

Posted on March 19, 2017 at 21:42I have the STM32F407 Discovery board running with LWIP. I am able to ping the board and get replies.I now want to get a Web Server running on the board. I used CubeMX and Enabled LWIP_HTTPD on the HTTPD configuration...