First, the "atomic" port ODR issue when more than one function or task may use the same GPIO port. Is the best thing to do ALWAYS to use BRR and/or BSRR to change the ODR values? From what I've read we need to be wary of an interrupt or other task ch...
How many clock cycles should it take to write to AXI SRAM from the M7 core, assuming that the cache is disabled (and disregarding instruction pipelining)?The reference manual says:"The system AHB SRAM can be accessed as bytes, half-words (16-bit unit...
Hi, i am very new to microcontrollers and have a problem that I cannot understand.I use a STM32F407 on a Discovery board. I set up channel 1 and channel 2 of the TIM2 timer for input capture. As soon the execution jumps into the interrupt handler "HA...
I have soldered MCU chip to a PCB and programed it by ST-Link using STM IDE.when I run MCU using ST-Link it is working fine. But When I use an external DC supply it's showing malfunction, (most of the time not working). I have connected the BOOT0 pin...
Hello,I want to setup a STM32F745IEK6 together with an SDRAM from Micron Type MT48LC8M16A2P-6A.I analyzed the theoretical signal Intergrity for the devices and I had to end because of my question:The setup time of MT48L is required with min. 1,5 ns. ...
Hello, I have a software that has been workingfine for several years on a STM32F100VCT6. However, today we are trying to use thissoftware on the MCUs ref: 100VDT6 or 100VET6. On these 2 new references no programming problem with the same binary file....
Please see post over on Arduino forum (since I can't post all that text here) but feel free to reply here.
According to the data sheet, the calibrated values for specific chip (at 30°C and 130°C) are at the following addresses:#define TEMP30_CAL_ADDR (*((uint16_t*)0x1FFF75A8)) #define TEMP130_CAL_ADDR (*((uint16_t*)0x1FFF75CA))Therefore the calculation s...
I am new to embedded C, and I recently watched some videos about volatile qualifier. They all mention about the same things. The scenarios for the use of a volatile qualifier :1. when reading or writing a variable in ISR (interrupt service routine)2....
