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Resolved! STM32f4 SPI data was broken

Posted on July 27, 2017 at 13:23Hi,I communicate with ADS1299(24bit, 8CH ADC chip) by SPI.ADS1299 SPI specification isCPOL=0 CPHA= 1Max SCLK = 20MHzand command flow is1) send read command(0x12)2) send dummy(x00) to make SCLK and receive 27 byte data...

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Resolved! STM32 I2C HAL slave receive callback not called

Posted on July 22, 2017 at 02:47I find when I make a call to HAL_I2C_Slave_Receive_IT it returns HAL_OK but it never manages to call the callback function, my HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *I2cHandle) implementation.Using a logic ana...

Arete sw by Associate II
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  • 13 replies
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How accurate is the internal RTC of STM32F407VG?

Posted on July 27, 2017 at 11:48I got to know that STM32F407VGT6 has an internal RTC support with either internal oscillator or an external one. Since the internal 32kHz oscillator is not that accurate, I would like to use an external 32kHZ oscillat...

SD_FindSCR Function Problem

Posted on July 27, 2017 at 10:56Hi,I use stm32f745 processor and SDMMC (SD 4 bits Wide bus ) at CubeMx. While sd card is writing data at every one minute, sometimes code is stopping at SD_FindSCR function in stm32f7xx_hal_sd.c library. This event is...

ali2399 by Associate II
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How to set LWIP debug to usart2 ?

Posted on July 24, 2017 at 10:29Hi,i already have done the setup for the lwip stack on the STM3210C-Eval board. I can already send via TCP/UDP and also RS232 to the uC (PC-->uC) and get also a echo back (uC-->PC). The debug output of the lwip-stack ...

Resolved! STM Flash Loader support for STM32F423 CPU missing

Posted on July 24, 2017 at 20:37Hello,The current version 2.8.0, and the pre-release version V2.9.0RC4 floating around in the forum, do not support the STM32F423 CPU. There is no map file for this CPU. Is there an updated pre-release of the program ...

STM32F303 Vih specification

Posted on July 26, 2017 at 03:40Data sheet for STM32F303 Vih specification indicates;1. TC and TTa I/O = 0.445*VDD + 0.3982.  FT and FTf  I/O =  0.5*VDD  + 0.23.  All I/Os except BOOT0 = 0.7*VDD.  Item 3 seems to contradict  1 and 2. Can this be cla...

D S by Associate
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Resolved! RM0090: USART minimum attainable baudrate

Posted on June 29, 2017 at 17:15The mantissa in USART_BRR is 12-bit i.e. its maximum value is 4095. That limits accordingly the minimum attainable baudrate for given APB frequency.The following values in example tables are thus invalid and those bau...

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STM32L4 SPI Clock phase

Posted on July 26, 2017 at 17:30Hi All, I'm using STM32L486RG microcontroler and 2 sensors using the same SPI interface (SPI1) I'm asking how to configure the SPI1 to communicate with 2 sensors when :  first sensor is working with SPI_PHASE_1EDGE s...