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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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serial terminal with ymodem and hex string capability

Posted on August 10, 2011 at 17:15Hi STM32 users, I need a serial terminal able to 1. Send file using ymodem file transfer protocol 2. Send hex (not ascii) text format I was using hyperterminal but it can't send hex format. I have found hercules but...

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...

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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CAN status pending

Posted on August 08, 2011 at 11:55I wanted to run the CAN Interface of a  STM32F105RB with the examplefile of ST (Can Network). The function  CAN_TransmitStatus( CANx, 0x0) tells me that the status of transmission is pending. Do you have any idea's ...

mic by Associate II
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Keil and binary file

Posted on August 08, 2011 at 10:37hello everybody,Do you know how to load a binary file into an STM32 Dicovery using Keil (and JTAG), without having the source code? I mean, I do not have a project I can compile, create a binary file and then downlo...