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Thanks Ttelmah

The code is 100.00% the same. The only difference is the compiler version used.

I've have the two versions installed; with the previous version a 7% less flash is used.

Today I've received the last ccs command line compiler version v5.098.

I’ve recompiled some of my projects for PIC18LF47K40 and found that the used ROM increases a 6%-7%.

Looking at .lst file ...

Thanks to you temtronic.

The Microchip Compiled Tips ‘N Tricks Guide is quite old but very interesting to have in mind while designing.

http://ww1.microchip.com/downloads/en/DeviceDoc/01146B.p ...

Thanks for your reply temtronic.

The 'appnote' you recommend is very interesting:

AN606 Low Power Design Using PICmicro™ Microcontrollers

https://www.microchip.com/wwwAppNotes/AppNotes.asp ...

PIC consumes < 1uA.
Receives a 5 bytes order plus a heading break byte.
The PIC starts consuming 2500uA while receiving the order and transmitting the answer.
PIC goes to sleep again consuming & ...

Thanks for your answer Ttelmah.

You are right again.
Sorry for asking a question that I know that you are answering almost every day during more than a decade.
Once I have studied and understood ...

Thanks for your answer temtronic.

I need an average consumption current of 100uA. I want the two AA (Vdd 3.0V...1.8V) batteries last more than 2 years.

With all peripherals disabled I have consu ...

I have done more tests without success.

while(TRUE) // Whith this loop I'm able to awake the PIC to receive data but with a lot of errors!
{ // With this loop at ...

I use PIC18LF47K42 for the first time.

I'm not able to awake the PIC when it receives a character by the UART1 using interrupts once it is asleep.

I'm forgetting something...

...This PIC has ...

Thank you very much for your immediate help.

Now works fine.

Regards.

// PIC18F47K42, Timer1 interrupt and sleep...
// Migrating from PIC18LF47K40

#case

#include <18F47K42.h> ...

While porting a code from PIC18LF47K40 to PIC18F47K42 that has the double of ram I found a problem that simplifying a lot is the following.

When I enable_interrupts(INT_TIMER1) regardless of disabl ...

With this code I get the CRC-16 / KERMIT. It works fine. Thanks again Ttelmah for your help.

#include <18LF47K40.h>
#use delay(clock = 16MHZ, internal)

#FUSES WDT_SW
#FUSES WDT65 ...

Thank you very much for your immediate help. Regards.

Hello.

I need to calculate the CRC16-CCITT(Kermit) but this routine gives me the CRC16-CCITT(XMODEM).

I don't know what to change to obtain the CRC16-CCITT(KERMIT).

I don't know to implement ...

Hello!

When I try to use the restart_cause() function I obtain values that are not in the list of constants in 18LF47K40.h file.

Can you help me to obtain the real cause of any restart cause?
...