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remove protection level 1

Posted on March 05, 2013 at 17:05 hey , i was testing the flash driver of stm32f407vg. and during the testing of the option bytes i set the rdp of the flash to protection level 1. since then all debugging facilities have been disabled. even the f...

SPI configuration problem on STM32F4 Discovery

Posted on August 07, 2012 at 18:55Hi everyone,I am trying to send some bytes of data on a sd-card (8GB) using SPI.I started with wiring the sd slot and configuring the spi but I have nothing, not even the clock...I have followed what's explained in ...

Charge of supercapacitor and Vbat

Posted on March 05, 2013 at 08:41Hi everybody,I got a question about Vbat (I didn't find this answer in the datasheet). I have connected to my Vbat pin a supercapacitor.Does I need to connect my supercapacitor to 3V3 to charge it ? Or is it charged ...

SPI Sends Dummy bytes

Posted on March 05, 2013 at 14:32Hello All, I am using STM32F207VC. I have problem while sending data to slaves. I send a packet of data for example 0x01,0x02,0x03,0x04,0x05,0x06. While sending these packets SPI sends 0x00 in between anyof these da...

USART and wifi

Posted on January 30, 2013 at 12:34The original post was too long to process during our migration. Please click on the attachment to read the original post.

pietro2 by Associate II
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STM32f407 and bootloader

Posted on March 05, 2013 at 11:52Hi Is it possible to change the pins of the bootloader that is loaded inside the chip? As I read it is only usart3 and  only on PORTB. Thank you

sami by Associate II
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full printf redirection

Posted on March 05, 2013 at 10:29Hello,I work with Atollic and STM3220 kit. I use the console with SWV. When I use printf with ''tiny_printf.c'' I have no problem.This is the method:in syscalls.c_write int (int file, char * ptr, int len){/ * Impleme...

pcu by Associate II
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Timer Synchronization

Posted on February 26, 2013 at 21:26Hello!Use stm32f107vc.I'm trying to synchronize two timers (TIM3 and TIM5), as including the external trigger. Configure them, as described in RM0008 page 386:void TIM3(void){RCC->APB1ENR |= RCC_APB1ENR_TIM3EN;TIM...

maryuriy by Associate II
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Systick handler problems

Posted on March 01, 2013 at 04:44Dear,     I want to test the systick clock frequency. And use the systick as the RTOS system timer. It would be set to 1ms. And I use the configuration of the demo code as following:  if (SysTick_Config(SystemCoreClo...

xinjin by Associate II
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