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STM32H7 I2S_CKIN kernel clock

Posted on August 14, 2017 at 14:09Hi!Quick question about pin and I2S/SAI clock sources.If I wanted to use I2S_CLK pin (PC9) as kernel clock for I2S and SAI devices what is the recommended frequency in order to meet 44.1K and 48khz, 96Khz and 192Khz...

Resolved! STM32F767ZI GPIO Pin Voltage and Current Information

Posted on August 15, 2017 at 12:30Hi , I'm a student using a STM32 Nucleo144 Board,STM32F767ZI MCU for my project , I am currently struggling to find Voltage and Current information on the GPIO pins which I need to proceed with my design , could any...

How to link stm32l4xx_hal_i2c.c with stm32l4xx_hal_i2c.h?

Posted on August 14, 2017 at 16:32Hello, I am using STM32Cube lib to development my project which include both spi and i2c communication.So I develop the project based on the SPI example in STM32Cube example package.However the initial project do no...

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Yu LU by Associate II
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Find out if interrupt has occurred?

Posted on August 15, 2017 at 10:03I am working with the stm32f4 Discovery Development Board and put simply, there's a while loop (with some conditions) in my main() function. Is it possible for the code inside the while-loop to find out it has been ...

arnold_w by Senior II
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Preload for output compare for timer 1 - STM32F746

Posted on August 15, 2017 at 11:09Hello,I have a question to the note in the datasheet (RM0385 Rev 6, Page 682). Bit 3 OC1PE - Note 2.What means this note?'The PWM mode can be used without validating the preload register only in onepulse mode (OPM b...

USB HID Barcode reader - keep disconnecting

Posted on August 15, 2017 at 12:27HiI have a USB barcode reader that acts as HID keyboard. When I plug it in to a Windows 10 machine it identified as 'USB keyboard device' (under device Manager - keyboards) and works fine: if I open text file and sc...

Y CS by Associate II
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STM32f013RCT6 TIM4 PWM Output Error

Posted on August 15, 2017 at 07:55Hi,every,i want to use the TIM4 to output PWM signal,but the PB_6 always keep low.Here is the code:********************************************************************************************GPIO_InitTypeDef GPIO_In...

How to change from JTAG-DP to SW-DP (ARM Cortex-M4)

Posted on February 17, 2017 at 07:53Hello, Entering SW-DP mode can be done by following instructions in RM0351 chapter 44.3.1. External TCK/TMS sequence is required.Is there any other way to change from JTAG-DP to SW-DP? With ARM Cortex-M3 this can ...

Suggestions for Non-Blocking I2C Slave

Posted on August 15, 2017 at 02:33I'm using CubeMx with the STM32F415.Looking at the HAL drivers for I2C slave devices using DMA, it appears as if the HAL_I2C_Slave_Receive_DMA() and HAL_I2C_Slave_Transmit_DMA() functions will effectively be blockin...