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Forum Posts

Pin value of a GPIO pin set as high impedance

Posted on October 28, 2015 at 08:49 I am using an STM32F4 discovery board and my intention is to set one of its GPIO pins at high impedance, which I have done as below: GPIO_InitStruct.Pin = GPIO_PIN_12; GPIO_InitStruct.Mode = GPIO_MODE_INPUT;...

sommer by Associate II
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  • 3 replies
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Reading wrong Temperature sensor values stm32f0

Posted on October 29, 2015 at 08:47Hi,I am using STM32F051R8 eval board I am trying to read temperature sensor and internal voltage values but some times I am getting wrong ADC conversion valuesvoid MX_ADC_Init(void){  ADC_ChannelConfTypeDef sConfig...

TJpgDec and FatFs

Posted on October 26, 2015 at 09:51 I checked the code, it works when picture is in memory. But I can't make it work with MicroCD. I rewrote the code for work with FatFs, but STM32 freezes on f_lseek() function. There is my code, I purpo...

STemWin and RTOS

Posted on October 25, 2015 at 18:59is there is any example of STemWin using FreeRTOS? I am using discovery kit STM32F429 I have my main function has only GUI_Init(); I keep getting this error  region `RAM' overflowed by 1919320 bytes

Problem with copying hex data

Posted on October 28, 2015 at 13:28 Hello, I have following problem with copying hex data. for (i = 0; i < 6; i++) { printf ( ''%02x'' , packet[i]); // copy packet to FIFO } Printf copy data from packet[] to FIFO...

hospodar by Associate III
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  • 2 replies
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Storage Format For Multiple Sensors: STM32 Datalogger

Posted on October 28, 2015 at 14:20Hi,I am working with a STM32 data logger with a pulse counter, SPI accelerometer and ADC connected. I am puzzled: how can I design a common 4/8Kb buffer for time-synchronous sensor values for later SDIO SDcard stor...

avashalo by Associate II
  • 1068 Views
  • 5 replies
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Using 2 comparator for the same signal

Posted on October 28, 2015 at 19:36Hi everyone,MCU: STM32F302I have to configure 2 differents analog comparators (Comparator 1 and comparator 2). Each comparator are linked internally to TIM1_OCRefClear. Is that a problem to control the same signal ...

jf2 by Associate II
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  • 0 replies
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STM32F407I with LQFP176 RTC registers resets when Vbat below 3.1V

Posted on April 21, 2015 at 15:18Hi everyone.In a new development with STM32F407I i have some problems with backup domain especially with internally switch Vdd/Vbat to backup domain.I use a CR3032 backup battery ( 3V lithium ) connected to Vbat pin ...

c2 by Associate II
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  • 4 replies
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Duration of timer's IRQHandler with PWM

Posted on October 26, 2015 at 16:29 I'm using STM32F303 Discovery board. I try to evaluate how much code can be performed intimer's IRQHandler without causing desynchronization with PWM of the same timer. //interrupt code if (T...

she by Associate II
  • 2002 Views
  • 12 replies
  • 0 kudos