PWM timer counter error correction & improvements

[couin3]

Hi,

This request should be considered after previous pull, "Sleep Mode IDLE error correction & improvements".

Minor rewrites on PWM code; A change on GTCCR register to enable LED Pin to work as intended (complementary to Driver Pin); Minor changes in sleep code.

Same basic tests have been done. Around 380µA when fully on or off (no LED, no load on Pump)

[AdamWelchUK]

This is looking really good thank you. I've been testing this for a couple of days on two boards and it is working very well. Both the charge pump and the gate frequency seem unaffected and I've measured the controller at 850uA! I'm made up! I'm going to test just a little further, then I'll hopefully be able to merge. I was wondering if there was another way to contact you? Perhaps you could email me to say hello from the email link on my youtube page?

[couin3]

Hi Adam,

I played with "AT85" MCU for some time one year ago, but only with marginally success. Your project helped me to reuse scattered things I had done, and linked them together. On the run, I also discovered novel approaches (128kHz, IDLE mode). I'm really glad to hear my last changes are working, as my test rig (see pic) is far from the real board.

But wait, there is more :

• Timer1 can be shut, when driver is fully on/off -> 30µA gain, may be useful in real situation
• Timer0 can be shut too, when driver is fully off ->300µA gain, as we can deep sleep, but only when there is no real need (Battery charged + sun)
• Re-think the use of LED -> short (10~100ms) flashes are really less power hungry than PWM, yet still visible.
• Have a look at ATTiny13 -> Same Pinout, SMD only (?), less power hungry but really resources limited

For the record, here are some links I found useful :

• AttinyCore, made by DrAzzy/SpaceKonde. Don't miss the github Readme.md file! -> https://github.com/SpenceKonde/ATTinyCore
• Nick Gammon, and it's really nice forum dedicated to ATMega328p. A reference. -> http://www.gammon.com.au/power
• Ralph S. Bacon, for his videos on ATTiny13 -> https://www.youtube.com/watch?v=Belaszrz11s -> https://www.youtube.com/watch?v=AwprzjW1q0k

Regards, Marc RIVES

Ps: In French, "Couin" is close to the sound made by a quacking duck ;)

Le 03/03/2020 à 21:55, AdamWelchUK a écrit :

This is looking really good thank you. I've been testing this for a couple of days on two boards and it is working very well. Both the charge pump and the gate frequency seem unaffected and I've measured the controller at 850uA! I'm made up! I'm going to test just a little further, then I'll hopefully be able to merge. I was wondering if there was another way to contact you? Perhaps you could email me to say hello from the email link on my youtube page?

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[couin3]

Intermediate version, closing