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How to save a variable in non-volatile memory?

Posted on September 04, 2017 at 09:49 Hello, I'm using a STM32F091VBTx microcontroller and for the application I'm implementing I need a variable to be constantly updated and it must be stored in a non-volatile memory in order to keep its value ev...

Marco S by Associate II
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Resolved! UART receiving data fail issue

Posted on September 11, 2017 at 08:25HI.I'm trying to test with simple UART as the below code,I connect with RS232's TXD to GPIO_Pin_10 and RS232's RXD to GPIO_Pin_9.There is no problem RS232 kit, but I can't receive data correctly from kit.I always...

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WFI call inside IRQ handler

Posted on September 08, 2017 at 09:58Hello,I'm using STM32L100R8T6A.The problem I'm facing is that I do a Low Power Battery Powered Project, where it's necessary to detect that battery has been removed and I have backup capacitor for this case but w...

bogusz by Associate II
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STM32L4 bootloader port filtering ?

Posted on September 11, 2017 at 09:50STM32L4, using internal bootloader, I can start it yet I need it not to open all available ports (usart, spi, usb) but limit it to only one dedicated uart port to avoid waking up chips linked to the other ports. ...

Noyb by Associate II
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conflicting SPI3 and remapping macros

Posted on September 10, 2017 at 12:08in my embedded system there is an stm32f103vdt, working with spi3 and usart3(remapped). spi3 is working well and the problem occurs when i configure usart3 remapped. as i call the macro __HAL_AFIO_REMAP_USART3_EN...

How can I use the alternate function mapping?

Posted on September 11, 2017 at 06:17Hi.Now I'm trying to understand the alternate function mapping with simple example of  'STM32F4xx_StdPeriph_Examples\USART\USART_HyperTerminal'But there is nowhere the setting of alternate function mapping to use...

Generate Timer 3 Interrupt every 2 seconds

Posted on September 11, 2017 at 09:12Greetings,I want to generate timer3 interrupt every 2 seconds.  Below is my timer3 init code. I am using CUBE MXstatic void MX_TIM3_Init(void){TIM_ClockConfigTypeDef sClockSourceConfig; TIM_MasterConfigTypeDef sM...