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[STM32F2xx] Usage of SYSCFG_MEMRMP?

Posted on August 12, 2011 at 12:18Hello,I'm trying to figure out the production process of my product and I cannot understand how the SYSCFG_MEMRMP bits work.Is it possible (and how) to put the boot pins physically (via pu/pd res) to boot the builti...

root by Associate II
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Measurement ADC1 Internal reference

Posted on August 12, 2011 at 12:19Hello everybody.  I would like to ask about measurement of Vrefint using ADC1 in STM32F106 64 pin. After conversion I get 0x18E. How to convert this value in voltage? #adc1-stm32

dmitrij by Associate
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USART and DMA

Posted on August 02, 2011 at 15:52I use DMA to write a string to USART2. After power up I trigger transmittion by pressing down a switch and detect ( oscilloscope ) that the usart transmitted two bytes less than expected - after that every time I t...

greg_t by Associate II
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Problems writing to SD card in SPI mode

Posted on August 11, 2011 at 16:58I'm trying to comunicate with SD card with  STM32F100RB controller via SPI.I am able to erase blocks on card, and to read them. The problem is about writing blocks to card. I am able to write something to card, and ...

Maximum SRAM usage on STM3220G-EVAL

Posted on August 10, 2011 at 22:55How much is there, really?  And how much is really available? The specs all say 16 mbit, but the part and the schematic show 32 mbit, or 4 MBytes.  Looking into the code examples include with IAR EWARM, it seems on...

rgrimes by Associate II
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checcksum calculation using IAR v6 and stm32

Posted on August 06, 2011 at 13:31Dear STM32 users, I want to add a checksum to my application in such way I can every let's say 100 seconds check the flash integrity using CRC. I have found that IAR simplifies this task and can add at the final adr...

Core is locked-up (IAR + JLINK)

Posted on August 10, 2011 at 16:26Hello, I got this error when I enter into a debug session using IAR 6.21 and a JLINK debug probe. I can read the memory, it seems that the protection bytes (options bytes at 0x1FFF F800) are not in ''protected mode'...

CPAL, DMA and IT priority.

Posted on August 07, 2011 at 00:17Hello,I work on a product with master I2C rx and tx, MCU is STM32F295RG.I started with home made I2C functions for reading and writing using pattern ''send something and brute force while until it's finished'', but ...

root by Associate II
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