I have programmer laying around here somewhere but I’ll try it this way first
Allright, I changed the const byte min_pulsewidth to 0 and copied the src.ino.atmega328p-xmini.hex file to the Rpi as latest.hex under /home/pi/emonpi/firmware/compiled/
Stopped emonhub, ran the avrdude cmd, started emonhub. I got the following with a couple of broken pipes but it seemed to work.
avrdude-original: Version 6.3-20171130
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/etc/avrdude.conf"
User configuration file is "/root/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/ttyAMA0
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude-original: Using autoreset DTR on GPIO Pin 7
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 20 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : Arduino
Description : Arduino
Hardware Version: 3
Firmware Version: 4.4
Vtarget : 0.3 V
Varef : 0.3 V
Oscillator : 28.800 kHz
SCK period : 3.3 us
avrdude-original: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude-original: Device signature = 0x1e950f (probably m328p)
avrdude-original: safemode: lfuse reads as 0
avrdude-original: safemode: hfuse reads as 0
avrdude-original: safemode: efuse reads as 0
avrdude-original: NOTE: “flash” memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude-original: erasing chip
avrdude-original: reading input file “/home/pi/emonpi/firmware/compiled/latest.hex”
avrdude-original: input file /home/pi/emonpi/firmware/compiled/latest.hex auto detected as Intel Hex
avrdude-original: writing flash (18356 bytes):
Writing | ################################################## | 100% 2.57s
avrdude-original: 18356 bytes of flash written
avrdude-original: verifying flash memory against /home/pi/emonpi/firmware/compiled/latest.hex:
avrdude-original: load data flash data from input file /home/pi/emonpi/firmware/compiled/latest.hex:
avrdude-original: input file /home/pi/emonpi/firmware/compiled/latest.hex auto detected as Intel Hex
avrdude-original: input file /home/pi/emonpi/firmware/compiled/latest.hex contains 18356 bytes
avrdude-original: reading on-chip flash data:
Reading | ################################################## | 100% 1.98s
avrdude-original: verifying …
avrdude-original: 18356 bytes of flash verified
avrdude-original: safemode: lfuse reads as 0
avrdude-original: safemode: hfuse reads as 0
avrdude-original: safemode: efuse reads as 0
avrdude-original: safemode: Fuses OK (E:00, H:00, L:00)
strace: |autoreset: Broken pipe
strace: |autoreset: Broken pipe
strace: |autoreset: Broken pipe
strace: |autoreset: Broken pipe
strace: |autoreset: Broken pipe
avrdude-original done. Thank you.
strace: |autoreset: Broken pipe
The webinterface showed everything in order. And yessss, the pulse counter can now keep up with the real usage. A waterkettle, portable roomheater and all four of the ceramic stove pits on full will easily go to 10kW which is now perfectly showing up on the emonPi.
Robert, thx for all the quick replies and solution!