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SDRAM STM32F429 refresh problem

Posted on July 04, 2014 at 13:58The original post was too long to process during our migration. Please click on the attachment to read the original post.

m_ by • Associate II
  • 2380 Views
  • 10 replies
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STMFlashLoader Demo read protection

Posted on June 03, 2015 at 05:50Have been using the Discovery board with IAR tools for weeks now.  The board works find and I can program using STLink.  I would like to get the STMFlashLoader Demo or STMFlashLoader to work using UART3.  I have tried...

rich2399 by • Associate
  • 425 Views
  • 1 replies
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Avoid checking BOOT0, possible?

Posted on May 26, 2015 at 17:01I made a mistake of not putting BOOT0 pin connect to ground, which the STM32L051 MCU is not working at the moment.  Is it possible to rewrite the bootloader to I could avoid checking the BOOT0 pin for development purpo...

andy2 by • Associate II
  • 367 Views
  • 2 replies
  • 0 kudos

Trouble getting 800kHz from PWM timer and DMA

Posted on June 01, 2015 at 04:56 Hi guys, I've been trying to get this code working for the past week now and i'm out of ideas. I'm trying to control the ws2812 LEDs with PWM. These LEDs have tight timings and require a single 800kHz data...

yoma1993 by • Associate II
  • 923 Views
  • 4 replies
  • 0 kudos

STM32F use with serial ram, FMSC or DMA?

Posted on June 01, 2015 at 20:05I've got a 23LC1024 it's a serial ram with spi capabilities http://ww1.microchip.com/downloads/en/DeviceDoc/25142A.pdf I'd like to be able to use it as an extension of my addressable ram on the stm32fxxxx. I have two ...

sburr by • Associate II
  • 1039 Views
  • 4 replies
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STM32F10B Eval Programming Issue

Posted on May 31, 2015 at 07:17Hi, I am using STM32f10B with STM32f103VGT6 on it. The problem is that the MCU is not working as per the program. It has a fixed GPIO high and they stay in the same state. I tried using coocox and IAR workbench. They ...

shauns87 by • Associate II
  • 810 Views
  • 5 replies
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stm32 UART-DMA one character transfer problem

Posted on June 01, 2015 at 14:21Hello! I'm using STM32F407 processor. When I'm trying to send 1 byte via USART-DMA (for example 0x72) I get two bytes ''72 72'' in terminal.If I send two or more bytes everything is okay. If I send something from term...

mdg82 by • Associate
  • 582 Views
  • 3 replies
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STM32F407 SPI-DMA Continuous Transmit and Receive.

Posted on May 27, 2015 at 12:11Hi, I am trying to configure the DMA based SPI communication for STM32F407. STM32F407 is the host controller(master), the slave is CC3100 WiFi module. I am implementing the DMA for SPI2. Following is my configuration c...

abhisheke by • Associate II
  • 1085 Views
  • 6 replies
  • 0 kudos

STM32F4 FatFs f_open return FR_DISK_ERR

Posted on June 02, 2015 at 08:52 I'm using the FatFs library ver R0.10 to access the SD card. Here is my code: SystemInit(); USART_Configuration(); NVIC_Configuration(); /*-------------------------- SD Init ----------------------------- */ Sta...

Volatile variables causes issues with Coocox

Posted on March 21, 2014 at 10:34hello, I know that I should post this in Coocox forum, but I what to know if one of STM32 users faced this issue before: I have a strange issue with Coocox (COIDE V1.7.6), it may be a bug: - Optimization is set to -O...

moez by • Associate II
  • 1314 Views
  • 7 replies
  • 0 kudos
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