About JW.4

JW.4 · 2024-07-25

I am working with an STM32F405 and have the I2C1 peripheral set up as a master in standard mode with a clock speed of 100 kHz. The i2c bus has about 5 devices attached to it, none of which are capable of running in master mode. I'm using the HAL_I2...

JW.4 · 2021-11-19

I am working with an STM32F405 and am attempting to use a page of flash to store ~1K of persistent data that will be seldom written and often read (device serial number and calibration data).I have been trying to reference sample code and a few other...

JW.4 · 2021-11-19

Yep- this ended up being the issue. I had an interrupt handler that was not clearing the proper error bit when an overflow error occurred (which has never occurred up until now, but is guaranteed to happen if the ISR stops processing input for 5 sec...

JW.4 · 2021-11-19

Here's an interesting bit of discovery based off that first question. I tried performing a "long" operation between disable_irq and enable_irq, and have gotten into the same state: uint64_t times = 0; __disable_irq(); //Erase_Flash(); ...

JW.4 · 2021-11-19

Thank you for the quick reply!> It sounds like your MCU is stuck inside an ISR due to a flag not getting cleared. I would delve more into that.I'll explore a bit here- my ISRs have been working without any problems up until the point where I added in...

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I2C master quarter clock pulse

STM32F405: flash write causes processor to halt

Re: STM32F405: flash write causes processor to halt

Re: STM32F405: flash write causes processor to halt

Re: STM32F405: flash write causes processor to halt