diff options
Diffstat (limited to 'docs/mimxrt')
| -rw-r--r-- | docs/mimxrt/quickref.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/docs/mimxrt/quickref.rst b/docs/mimxrt/quickref.rst index cfd060505..34e0aa79f 100644 --- a/docs/mimxrt/quickref.rst +++ b/docs/mimxrt/quickref.rst @@ -193,7 +193,7 @@ PWM Constructor - *freq* should be an integer which sets the frequency in Hz for the PWM cycle. The valid frequency range is 15 Hz resp. 18Hz resp. 24Hz up to > 1 MHz. - - *duty_u16* sets the duty cycle as a ratio ``duty_u16 / 65536``. + - *duty_u16* sets the duty cycle as a ratio ``duty_u16 / 65535``. The duty cycle of a X channel can only be changed, if the A and B channel of the respective submodule is not used. Otherwise the duty_16 value of the X channel is 32768 (50%). @@ -231,7 +231,7 @@ is created by dividing the pwm_clk signal by an integral factor, according to th f = pwm_clk / (2**n * m) -with n being in the range of 0..7, and m in the range of 2..65536. pmw_clk is 125Mhz +with n being in the range of 0..7, and m in the range of 2..65535. pmw_clk is 125Mhz for MIMXRT1010/1015/1020, 150 MHz for MIMXRT1050/1060/1064 and 160MHz for MIMXRT1170. The lowest frequency is pwm_clk/2**23 (15, 18, 20Hz). The highest frequency with U16 resolution is pwm_clk/2**16 (1907, 2288, 2441 Hz), the highest frequency @@ -255,7 +255,7 @@ Use the :ref:`machine.ADC <machine.ADC>` class:: from machine import ADC adc = ADC(Pin('A2')) # create ADC object on ADC pin - adc.read_u16() # read value, 0-65536 across voltage range 0.0v - 3.3v + adc.read_u16() # read value, 0-65535 across voltage range 0.0v - 3.3v The resolution of the ADC is 12 bit with 10 to 11 bit accuracy, irrespective of the value returned by read_u16(). If you need a higher resolution or better accuracy, use |