About Lorne Vaasjo

Lorne Vaasjo · 2017-06-07

Posted on June 07, 2017 at 18:46I need to have a PC algorithm that produces the same result as the hardware CRC (using an F0 chip).I can produce identical results between hardware and software when doing a byte by byte crc calculation.I would like t...

Lorne Vaasjo · 2017-02-27

Posted on February 27, 2017 at 20:05I am using the ADC+DMA to collect samples for AC power calculations. The voltage and current are well buffered (low impedance sources) sampled at about 7kHz.The data acquisition will work properly for many second...

Lorne Vaasjo · 2017-09-07

Posted on September 07, 2017 at 14:59I suggest writing the value(s) at successive locations in a sector. When you startup scan through to the last one. That way you should not need to erase very often. You can adjust the maximum size of flash use...

Lorne Vaasjo · 2017-06-13

Posted on June 13, 2017 at 15:41In the version of the HAL library I was using there was an option in the CRC init to do the calculation byte by byte or by 32 bit word at a time. I assumed originally that setting translated to a hardware setting in ...

Lorne Vaasjo · 2017-02-27

Posted on February 28, 2017 at 01:56I haven't tried using a single channel but have jumpered one input to an extra channel to see if the values track. They do track except when strange data occurs which indicates the issue is likely and internal one...

Lorne Vaasjo · 2017-02-27

Posted on February 28, 2017 at 01:11I'm using a circular buffer and processing the oldest half of the data buffer on both complete and half-complete dma interrupts. I am using the correct half of the buffers as well. I put a port line high during t...

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How do I resolve the different hardware CRC calculation when using word vs byte option

Any ideas with regard to spurious ADC values

Re: How to save a variable in non-volatile memory?

Re: How do I resolve the different hardware CRC calculation when using word vs byte option

Re: Any ideas with regard to spurious ADC values

Re: Any ideas with regard to spurious ADC values