STM32 MCUs Embedded software

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Inaccurate us delay function

Hi,I'm trying to implement a `delay(microseconds)` function on an STM32 F745 running at 216 MHz. I want to keep it dummy and simple without involving interrupts. My strategy is as follows:-Setup TIM2 to run at 1 MHz. Since it has a 32-bit counter it ...

CGalv by Associate III
  • 1038 Views
  • 9 replies
  • 0 kudos

X-CUBE-Azure x509, are certificates supported?

I am running STM32CubeExpansion_Cloud_AZURE_V1.1.0With IoTHub SDK 1.2.12 and provisioning client 1.2.12The provisioning client resolves server name as expected, then the iothub client handshakes with the IotHub using MQTT, but the server rejects it.I...

UKluk by Associate
  • 552 Views
  • 2 replies
  • 0 kudos

arm_fir_q15() Hard Fault

Hi,I've a NUCLEO-F767ZI. I'm having problem getting the arm_fir_q15() to work, it gives me a hard fault. I'm defining the variables like this:#define BLOCK_SIZE 1 #define NUM_TAPS 51 /* USER CODE END PD */   /* Private macro -----------------------...

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Resolved! Ethernet performance & packets loss

Hello,We try to test our Ethernet performance (STM32H7).We are using a udp echo with LWIP , and we inject udp packets from PC into STM32H7 .The performance is OK with most packets, but when decreasing packet size below ~300bytes, we start to get pack...

ranran by Senior II
  • 2754 Views
  • 13 replies
  • 2 kudos

Resolved! re-enumerate USB on STM32F103

CDC function run normally. But if MCU reboot(For example, USB connect to PC and reboot MCU), USB will not recongnized. It will return to normal if I remove USB then insert it again.So I want to add re-enumerate function to let device re-enumerate tho...

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