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SPI receive, wrong LSB

I'm trying to communicate between the nucleoh743 (master mode) and a TDC GP22 slave chip but came across this issue:I am expecting to read 0x27 but i always get 0x26. All the other bits from this 1 byte are correct so i was wondering if there somethi...

NBlac by Associate III
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  • 11 replies
  • 1 kudos

Resolved! Can't update SysTick->VAL

Hi,In my system I use STM32L476.In order to save power once every second, when heavy processing is done, I switch to PLL 80MHz, the rest of the time I use MSI clock at 32MHz.In order to have a stable SysTick I update the reload value of the SysTick a...

Why SDIO of STM32F4 chip lost 0xF in FIFO buffer?

Hi, Recently I debug STM32F413 with a SD card by SDIO interface, but failed in FATFS mount. At last, I did a simple test. The code wrote 512 bytes--0x00-0xFF(256 bytes), 0x00-0xFF(256 bytes)--to the first two sectors of SD card by HAL_SD_WriteBlocks,...

DDong.3 by Associate II
  • 895 Views
  • 4 replies
  • 0 kudos

Resolved! STM32L4 clock config problem

Posted on October 05, 2017 at 15:31Hello there,I am using STM32L452VET. I have generated the startup code using latest STM32CubeMX 4.22.1. Here is my clock config:My problem is the following:If I turn switch the compiler optimization flag to either:...

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HAL_CAN_AddTxMessage never transmits

I have a simple CAN test where the CAN1 Peripheral on the STM32F446RE board is initialized using STM32CubeMX (Prescaler = 16, TimeSeg1/TimeSeg2/SyncJumpWidth = 1TQ, Mode = Normal, all parameters are DISABLED except for AutoRetransmission = ENABLE). A...

I have B-L475E-IOT01 and follow the ppt to connect to AWS IOT. But it cannot connect to AWS, the error message below. The firmware inside B-L-475E-IOT1 is original, come from the board, I do not flash any new firmware.

*** AWS connectivity demonstration ***AWS IoT SDK Version 2.1.1-MQTT connection in progress... Attempt 1/3ERROR: iot_tls_connect L#301 failed ! mbedtls_ssl_handshake returned -0x7780 Attempt 2/3ERROR: iot_tls_connect L#301 failed ! mbedtls_ssl_handsh...

kli.7 by Associate
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  • 0 replies
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USB HID Use endpoint 0x82

using the second endpoint address looked pretty simple. I open the endpoint, changed my descriptor to use 0x82 instead of 0x81, changed the code so that I send two different reports, one for 0x81 and the other for 0x82 and everything looks simple. ...

HS-IN-FS

I am using STM32Cube_FW_F4_V1.21.0.This is very excellent software.UART,SPI,I2S,RTC,,,work fine but HS-IN-FS.I have checked HS and FS works fine.My target board is STM32469I-EVAL board and I'm using EWARM compiler suite.My application is USB_Device/M...

TKawa.17 by Associate
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  • 0 replies
  • 0 kudos