Sunday, January 28, 2024

NanoCAD is Free CAD program like AutoCAD

NanoCAD is free for personal cad program. Usage is same as AutoCAD.

go to nanocad.com, download personal version. 

https://nanocad.com/personal/






Saturday, January 27, 2024

HardFault (error ) on STM32 USB Host + FreeRTOS

I have Hard fault when USB device Attached to my STM32F407.


STM32CubeMX makes rtos STACK SIZE default to 128 bytes.

It is too small.


You can increase stack size.


Filename : USB_HOST/Target/usbh_config.h


Original (ERROR case)


#if (USBH_USE_OS == 1)

#include "cmsis_os.h"

#define USBH_PROCESS_PRIO osPriorityNormal

#define USBH_PROCESS_STACK_SIZE ((uint16_t)128)

#endif /* (USBH_USE_OS == 1) */



Fix (ERROR case)


#if (USBH_USE_OS == 1)

#include "cmsis_os.h"

#define USBH_PROCESS_PRIO osPriorityNormal

#define USBH_PROCESS_STACK_SIZE ((uint16_t)2048)

#endif /* (USBH_USE_OS == 1) */