• USART fails in EXTI Interrupt
    I have faced another strange thing today: inside ISR of EXTI I wanted to send some character to USART, but I found that program halts there, after eliminating the commands regarding USART I found that...
  • EXTI IRQ handler for EXTI_Line5 ,..EXTI_Line15 in STM32L
    Regarding STM32L startup file "startup_stm32l1xx_hd.s" there is only 5 functions EXTI0_IRQHandler EXTI1_IRQHandler EXTI2_IRQHandler EXTI3_IRQHandler EXTI4_IRQHandler respectively for EXTI_Line0...
  • SPI code for STM32F446RE
    I have been working on the SPI port of STM32F446RE. I am using (MDK Version 5 - Keil) as the IDE. I have configured my device to use the SPI1 port of the device. All the configuration details are as...
  • CMSIS EXTI project example
    Hi to all.. I've just moved to ARM Cortex from Microchip PIC.. I was there for too long. (since 1996). I bought lots of dev-board ranging from Waveshare Open Series to STM32Discovery and even a Freescale...
  • c language for mq3 sensor in stm32f446re
    Does anyone know how to initialize mq3 alcohol sensor in keil software using c language? To also know how many percentage (range) of the presence of alcohol from someone's breath to be as input? Please...