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SPI gets out of sync

Posted on December 07, 2017 at 16:56Hello,I have a problem with the STM32H743.I have a pluggable SPI connection and the STM32H743 works as a Slave in receive mode.When I pull and plug the connection the NSS, CLK and Data connections toggles and I ge...

twagner by • Associate II
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Question about Level1 Cache STM32F7

Posted on November 08, 2017 at 10:11Hello,I have read several documents about the Cache, but the last sentence in AN4839 (Level 1 cache on SRM32F7 Series) confuses me.' However, If the external device is an ASIC and/or a FIFO, the user must disable ...

DMA returns wrong SPI data

Posted on December 08, 2017 at 10:48Hello everyone.I have a strange problem where my SPI data seems to 'shift' and my DMA goes out of control (I do not have a clue why it is acting as it does). I am developing a program using the STM32L433CC togethe...

Why the device serial number in BlueNRG1 is incorrect

Posted on December 08, 2017 at 08:44I found there is an uniq device serial number in BlueNRG1 datasheet, and it's address in 0x100007F4, but when I try to read it, they are all 0xFF, and the memory content in keil memory dialog is all 0xFF. My board...

cgh21 by • Associate II
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Start DFU bootloader.

Posted on December 08, 2017 at 08:32Hello,I'm trying to start the DFU bootloader of an STM32F4 Controller.I have my own bootloader implementation and I try to jump to the DFU bootloader from my bootloader.My Problem is:My Firmware is connected to CA...

Resolved! HAL_UART_RxCpltCallback() is triggered only once

Posted on December 07, 2017 at 10:21 Hello all, I am using STM32F030R8T6 and also using HAL libraries for programming. I am using two UARTs one as a debug UART1 to send various messages to PC and UART2 for communication with Bluetooth module (...

Mrunal A by • Associate III
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Are these appropriate LoRaWAN learning tools

Posted on December 07, 2017 at 03:29I own a NUCLEO-L053R8.Is it appropriate to get a I-NUCLEO-LRWAN1, plug it into the NUCLEO  and use the I-CUBE-LRWAN (STM32CubeExpansion_LRWAN_V1.1.2) to start learning LoRaWAN?Is the NUCLEO-L053R8 with the I-NUCLE...

ST-Link utility v4.1.0 poor connect disconnect

Posted on October 19, 2017 at 18:16I just upgraded from v3.9.0 (having previously used most versions since 2.5.0) and now connecting and disconnecting are seriously degraded. Specifically, after physically disconnecting the programmer from our board...

gfuehrer by • Associate II
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