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Aubrey Kagan

Excel Curve Fitting & Linearization, Part 1

Aubrey Kagan
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antedeluvian
antedeluvian
3/24/2014 9:15:21 AM
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Blogger
Re: How to implement?
DaeJ, Victor, & Vishal

A while ago we were discussing integer math on micros. I said

"As you have all discussed, you can obviously implement any 2nd order expression in software using floating point or even integer arithmentic. All that changes is the precision, code space, exceution speed and of course ease of implementation.

I have been planning to write a blog on integer arithmetic and this has spurred me on to complete it."

The blog has now been published. You can find it here "Integer Arithmetic Rules!"

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Victor Lorenzo
Victor Lorenzo
2/12/2014 11:41:49 AM
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Re: Good tip
@chirshadblog, I agree with in that "its good to consider other factors".

When I start evaluating which processor best fits one particular project I not only look at cost, I also check its specifications, performance, power consumption, peripherals, tools support, development environment (and hardware debugger) availability and design support (sample kits, application notes, sample code and field application engineers or community support).

The kits I mentioned in previous posts fit for one specific purpose, as learning platforms for people wishing to get in touch with Cortex M ARM powered SoCs.

One very important thing, in my oppinion, is the deveopment environment. If I have to pay 4K-USD for the development environment + 1K-USD for the hardware debugger + 300-USD for the discovery kit + ??K-USD for basic libraries for communication/RTOS/LCD Display/Cryptography/etc.... chances are I'll not select and use that processor (SoC/MCU).

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etnapowers
etnapowers
2/12/2014 7:28:34 AM
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Newbie
Re: Good tip
@chirshadblog: that's correct, cost is a important factor but it is not the only one that has to be optimized, expecially for very new technologies. Many other things have to be considered: the similar solution of competitors, for example, or the possible scenario of application of the new technology proposed.

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etnapowers
etnapowers
2/12/2014 5:38:58 AM
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Newbie
Re: Good tip
@Victor: Between the list that you provided I can indicate the STM32F0DISCOVERY:

The STM32F0DISCOVERY helps you to discover the STM32F0 Cortex-M0 features and to develop your applications easily. It includes everything required for beginners and experienced users to get started quickly.

Based on the STM32F051R8T6, it includes an ST-LINK/V2 embedded debug tool, LEDs, pushbuttons and an additional prototyping board for easy connection of additional components and modules.

A large number of free ready-to-run application firmware examples are available on www.st.com/stm32f0discovery to support quick evaluation and development.

 

This kit is really helpful in case of new technologies, as you correctly said.

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chirshadblog
chirshadblog
2/12/2014 1:26:12 AM
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Newbie
Re: Good tip
@Victor: Yes cost wise its good to go for a lower budgeted product for start-ups but if its beyond that then I feel its good to consider other factors 1st rather than going for the cost

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Victor Lorenzo
Victor Lorenzo
2/11/2014 12:42:11 PM
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Re: Good tip
I was thinking more in kits and discovery packs like this (32F0308DISCOVERY) or some of the ones listed here.

Low cost discovery kits are very handy when it comes to starting new projects or simply getting in touch with new technologies.

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etnapowers
etnapowers
2/11/2014 8:13:23 AM
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Newbie
Re: Good tip
@Victor, I can recall the following from STM:

 

AN4309

AN4117

these kits are STM32 Low power microcontroller based.

 
  • The AN4309 describes the use the STM32L1xx I2S feature to play audio files using an external codec

 

  • The AN4117 outlines the expected performance when using the SPIRIT1 under EN 300 220-1 (v2.3.1, 2012-02) in the 433.050 to 434.790 MHz band

 

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Victor Lorenzo
Victor Lorenzo
2/11/2014 7:45:08 AM
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Re: Good tip
@etnapowers, I can recall several ST Cortex processors from the STM32 series. Could you please tell us about some ST kits with similar characteristics to those mentioned in previous posts? Thanks --Victor

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etnapowers
etnapowers
2/11/2014 5:45:08 AM
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Newbie
Re: Good tip
@Victor, thank you for your post, the Cortex M4 based solution is for sure
the best solution nowadays , many similar application have been developed
mainly by ST and Freescale  for energy metering, smart power, gas
monitoring and many other possible applications


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SunitaT0
SunitaT0
1/31/2014 2:41:00 AM
User Rank
Master
Re : Excel Curve Fitting & Linearization, Part 1
@Aubrey, thanks a lot for the post. I have never done curve fitting and linearization using Excel. After reading this article I am sure I will find it easy to implement curve fitting and linearization.

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Page 1 / 3   >   >>
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