How to fast read GPIO?
Hello,i'm reading GPIO using internal instruction of GPIO_ReadPin function like "(GPIOC->IDR & GPIO_PIN_1)?1:0;" but i didn't get actual speed. So is there any alternative way to read GPIO fast ?Regards,Yash
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STM32L0: Writing to flash blocks interrupts despite moving vector table & ISRs to RAM
Writing bytes to internal flash memory blocks all interrupts on the STM32L0 despite moving the vector table and ISR functions to RAM The ContextI have a embedded system running on an STM32L053 processor that needs to process STM32 hardware timer inte...
I2C dumping 255 as data instead of actual Values
I am using about 13 (PCA9554A & PCA9554AD) I/O expander IC to connect sensors to STM32 F103 micro-controller through I2C. Upto 3 PCA9554 IC works fine, but the moment I connect 4th IC, it starts to dump 255 from all the i/O Expander ICs.The data is l...
STM32F0 ADC DMA or Not DMA
Hello. I am making software with STM32F030CCT6 processor. I am trying to make ADC with or without DMA. I always face this problem in F0 series. I can read only one channel. When it switches to multi-channel, it transfers data from a single channel to...
Is there any bug in code HAL_Delay() not works?
HAL_Delay() function gives infinite delay.i am toggle led using delay.below my simple project files.
Resolved! Marking on part STM32L151R8H6A mismatch with data sheet
Marking on actual part STM32L151R8H6A is “151R8H6A�? but data sheet is “L151R8H6A�?
UART/USART DMA IDLE Receive with unknow data
Hi,I'm trying to build a software to retrieve data from an solar inverter.After I success to send data, it was the time to receive the data. I choose the method with DMA IDLE to receive data in a circular buffer.In this mode, after a lot of debugging...
Byte is lost from UART packet after being put into memory (DMA)
We have run into a problem where a new run of boards with STM32F429ZIT MCU's have been losing a byte (always loses a single byte which seems odd) from the UART communications that are sent to DMA.We send packets of UART data to the MCU and the data i...
Resolved! STM32F777 new revision 1
I've bought some new STM32F777BIT devices with datecode 145 marked with a new revision code 1.All my older STM32F777 was marked with revision Z and current errata sheet ES0334 Rev 7 mentions only revisions A and Z.What are the differences between rev...
What can cause a STM32F407 to fail to execute the firmware at 0x08010000, but execute the bootloader at 0x08000000, even if I have completely re flased both of them with a ST-LINK. It works on all the boards, except 2 of them. same board revision. !!!!!!
The only part I am not familiar with is all the registers, is there something that may have been corrupted, and I should set back to some values ???
