Teensy 4.0

[fbolze]

Good evening,
thanks for this wonderful work. I try to implement a photon counting unit using an Hamamatsu module. I try to compile the code for teensy 4.0 and there is an error code, please see below.
is there a way to solve this problem?
thanks for your attention,
cordially
frederic

Arduino: 1.8.12 (Mac OS X), TD: 1.53, Board: "Teensy 4.0, Serial, 600 MHz, Faster, US English"

In file included from /Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:27:0:
/Users/fbolze/Documents/Arduino/libraries/FreqCount/util/FreqCountTimers.h:64:4: error: #error "Unknown chip, please edit me with timer+counter definitions"
#error "Unknown chip, please edit me with timer+counter definitions"
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp: In static member function 'static void FreqCountClass::begin(uint16_t)':
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:44:15: error: 'counter_init' was not declared in this scope
counter_init();
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:45:31: error: 'timer_init' was not declared in this scope
gate_length = timer_init(msec);
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:46:19: error: 'SREG' was not declared in this scope
uint8_t status = SREG;
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:48:14: error: 'timer_start' was not declared in this scope
timer_start();
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:50:16: error: 'counter_start' was not declared in this scope
counter_start();
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp: In static member function 'static uint32_t FreqCountClass::read()':
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:64:11: error: 'SREG' was not declared in this scope
status = SREG;
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp: In static member function 'static void FreqCountClass::end()':
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:74:17: error: 'timer_shutdown' was not declared in this scope
timer_shutdown();
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:75:19: error: 'counter_shutdown' was not declared in this scope
counter_shutdown();
^
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp: At global scope:
/Users/fbolze/Documents/Arduino/libraries/FreqCount/FreqCount.cpp:79:4: error: expected constructor, destructor, or type conversion before '(' token
ISR(TIMER_ISR_VECTOR)
^
Multiple libraries were found for "FreqCount.h"
Used: /Users/fbolze/Documents/Arduino/libraries/FreqCount
Not used: /Applications/Arduino.app/Contents/Java/hardware/teensy/avr/libraries/FreqCount
Error compiling for board Teensy 4.0.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

[MahdiShaban]

Just check that you dont have libraries that are interfering in the IDE, in my case I deleted the library I downloaded from the Arduino library manager as it interferes with the libraries installed when you download teensyduino.