STM32 MCUs Embedded software

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System freezes, stuck in USART interrupt

The MCU is STM32F469, using RTOS: AZURE ThreadX and FatFS. The system is fetching data through 3 UART ports and doing logging (saving data into a file).Logging is setup to run once one hour, about 1000 bytes.UART read and write both use DMA. The syst...

jason_gu by Associate
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  • 3 replies
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Enabling HTTPd breaks the whole project

Hi, I'm playing around with lwIP on my Nucleo-H743ZI and I was able to make ping work, udp/tcp echo and snmp too. But when I enable HTTPd the project doesn't wont do compile I just get a lot of undefined references, I tried to make a new project and ...

abeslic by Associate II
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  • 13 replies
  • 2 kudos

USB HID Keyboard LEDs

Posted on June 13, 2014 at 07:33 Finally find the way out of the Keyboard LEDs working. I use STM32F4 disc with STM32Cube_FW_F4_V1.1.0 and STM32CubeMX 4.2 The HID keyboard program is modified from HID Mouse program Update the usbd...

zg by Associate
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  • 2 replies
  • 2 kudos

PWM frequency is not as expected

Hi,I'd like help to understand what is thew PWM frequency.As far as I understand:1. The main system clock is 64MHZ -- see below SystemClock_Config()2. PWM frequency is 64KHz (= 64MHZ / (1000 - 1))BUT, measuring the frequency shows 4KHz (rather than 6...

AFink by Associate III
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  • 2 replies
  • 0 kudos