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Forum Posts

STM32L151 Turn Pin to High state in stanby mode

Hi Community. In my project, I use stanby mode with RCT interrupt to wake up to save power. Although I set all pin to Ananog In, the pin is still go to logic high after chip go to stanby mode. That make Bust Power IC is turn on. Please help me. I am ...

Hoang Loc by Associate II
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Any examples of more general i2c messaging?

I've been trying to find examples of HAL-based i2c messaging, such as writing changing to reading without restart condition, and request-response messaging (= start, arbitrary number of bytes written, restart, arbitrary number of bytes received, stop...

Why I am stuck in I2C_ISR_TXIS flag set?

I have MPU6050 accerlometer, i need to interface with stm32f0 (via I2C).Firstly i am check if the sensor is responding by reading the"WHO_AM_I (0x75)" Register.If the sensor responds with 0x68, this means it’s available and good to go.but the code is...

Ws by Associate
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Resolved! Is there any advantage in the H7 SPI?

Hi,I would really like to understand why ST changed SPI on H7. What can be done with SPIx->CR2.TSIZE? Is it possible to generate an ISR only after TSIZE bytes transfer?Why 16 bytes FIFO? Is it possible to generate an ISR only after 16 bytes transfe...

Asantos by Senior
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  • 2 replies
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I am using STM32-NUCLEO L053R8 and I want to use 8 RTDs (Temperature sensors) to Analog pins of this microcontroller board. Is it possible I can use all ADCs simultaneously?

This micro-controller has 16 Analog channels and I have read somewhere that all of these analog channels are sharing the same ADC. I want to connect 8 RTDs to the analog channels and I want this micro-controller to do conversion simultaneously. Is i...

SAHME.2 by Associate
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  • 0 replies
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Resolved! STM32H753 eval board. Cannot write to backup RAM

I call HAL_PWR_EnableBkUpAccess() but writes to backup RAM (4K in battery backed domain) won't stick. Data always remains 0. No error or fault on write.What else can be missing??RTC backup registers write test on same board is successful (means, tamp...

Pavel A. by Super User
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  • 3 replies
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STM32 SPI Master Receiving

Hello,On my custom design board, I use external 12 bit ADC (ADS7886) and STM32F767VI. I try to get digitized ADC values with SPI interface. I set the SPI as Receive only master than prescaler as 8; baudrate as 13.5 Mbits/s; polarity as 1; phase as 1...

AE104 by Senior
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  • 5 replies
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