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New possibilities for the ultra-low power segment!

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code pro...

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DCMI max transfer rate

Posted on January 24, 2017 at 19:28HelloIt is mentioned in the table 87 (DCMI characteristics, stm32f405/407 datasheet, Rev7) that max DCMI_PIXCLK is 54 MHz, and it's mentioned in the RM0090 that this peripheral is capable of up to 54MBytes/s transf...

STM32F051 I2C variable length slave read

Posted on September 18, 2015 at 03:49Hi All, I am having an interesting I2C problem. A slave device i am reading from has a variable length response, the length of data is read from the device so i do not know how much i need to read until i start t...

HAL_UART_Transmit_DMA problem

Posted on February 06, 2017 at 14:22 I had problem for 'HAL_UART_Transmit_DMA', once I transmitted some data, I couldn't send any data after that. I used this function, 'HAL_UART_Transmit_DMA' in 'USART1_IRQHander'. (Because I should pars...

Heap size

Posted on January 11, 2017 at 11:32Hi,I'm working with a stm32f437VI. I need more heap memory. I changed the Heap size in de startup_stm32f427x.s (Heap_Size       EQU     0x00000200), but when I did a malloc and worked with the variable, and excepti...

cricart by Associate II
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How to send additional bit?

Posted on February 06, 2017 at 18:09Hello,I'm trying to implement a software that will allow me to send additional one pulse (on the data wire and clock wire). After one pulse I should send data (32 bits) over spi.Frame should look like:1 bit + 32 b...

John Doe1 by Associate III
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STM32F405 I2C lock if one clk pulse gets lost

Posted on February 08, 2017 at 13:19If the master sends the adress , but doesn't send the last clk pulse to receive the ACK from the slave, the slave will not release the SDA line. The problem is, that the ADDR-Flag only gets set AFTER the ACK was s...

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