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nTRST with Debug+ETM connector on ULINK PRO

Posted on February 04, 2015 at 12:58I am using ULINK-PRO to debug a STM32F4.  I have connected the target as per the Cortex Debug+ETM 20 pin.  I have connected TRACE_D1 to nTRST as I believe these pins are multiplexed within the ULINK PRO.  i.e. nTR...

kb by • Associate II
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writing to a port which is not available

Posted on February 04, 2015 at 07:47 Hello, we have a small software (bootloader) running on a STM32F103. In a new project, we selecte a ''smaller'' type the STM32F105 with less pins. In the bootloader we set a push pull port high. On the new contro...

Writing and reading flash

Posted on February 04, 2015 at 14:06 hi i have an stm32f4 and i try to write and read flash value. #include < stm32f4xx_hal.h > #include < stm32f4xx.h > #include < stm32f4-hal /stm32f4xx_hal_flash.h> float dataflash1 = ...

Timer Capture for frequencies < 100Hz

Posted on February 03, 2015 at 02:20Hello, I am endeavoring (as with every hair-pulling experience with the STM32F4) to measure/capture LOW frequency pulses. For this, I'm assuming I need to use a 32 bit timer: TIM2 or TIM5. This is a bit of a dilem...

STM32 USB doesn't work compilation with GCC

Posted on February 02, 2015 at 00:12 I'm testing ST's USB Virtual COM Port example code(fromSTM32_USB-FS-Device_Lib_V4.0.0) on STM32F103ZET6 board，and the binary that is produced could not enumetate when compiling with gcc(-O0 or -O2 or -O3)....

obit by • Associate
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UART Question

Posted on September 03, 2014 at 18:42Hello everyone, I was wondering how to turn of the UART Interrupt, I am using HAL_UART_Receive_IT to receive incoming characters on the serial port.  periodically I want to take over the port and control it manua...

STM32F4 TIM causing FLASH PGPERR

Posted on January 30, 2015 at 13:09 Hey Everyone, I'm using an STM32F405 on a custom board with the STM32CubeF4 library. Whenever I enable the TIM4 peripheral, the TIM4->DMAR register automatically changes from 0 to 1. This is causing th...

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