trying to change frequency of pwm arduino uno

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msh jgtu
msh jgtu 2020-11-17
评论： saber souid 2021-4-20
i want to connect arduino uno to matlab so i write s-function in matlab simulink file. i am trying to change frequency of pwm of arduino uno so i wrote this line in s-function but i got error
this is the code
TCCR2B = TCCR2B & B11111000 | B00000001; // for PWM frequency of 31372.55 Hz
the error message is
[code]G:/MA1AE7~1/freq31khz_wrapper.c:46:19: error: 'B11111000' undeclared (first use in this function)
TCCR2B = TCCR2B & B11111000 | B00000001; // for PWM frequency of 31372.55 Hz
^
G:/MA1AE7~1/freq31khz_wrapper.c:46:31: error: 'B00000001' undeclared (first use in this function)
TCCR2B = TCCR2B & B11111000 | B00000001; // for PWM frequency of 31372.55 Hz
^
gmake: *** [freq31khz_wrapper.o] Error 1
### Build procedure for model: 'arduinoled' aborted due to an error.
Error(s) encountered while building "arduinoled":
### Failed to generate all binary outputs

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