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Diffstat (limited to 'macros/Hardware/RasberryPi/RPI_HardPWMWrite.sci')
| -rw-r--r-- | macros/Hardware/RasberryPi/RPI_HardPWMWrite.sci | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/macros/Hardware/RasberryPi/RPI_HardPWMWrite.sci b/macros/Hardware/RasberryPi/RPI_HardPWMWrite.sci new file mode 100644 index 0000000..9f9f797 --- /dev/null +++ b/macros/Hardware/RasberryPi/RPI_HardPWMWrite.sci @@ -0,0 +1,31 @@ +function RPI_HardPWMWrite(pin,value) +// Function to change pwm duty on specified pin. Hardware PWM is available +// only on pin 12. So, only '12' should be provided as pin +// +// Calling Sequence +// RPI_HardPWMWrite(12,512) //Value must be smaller than the range set +// using RPI_HARDPWMSetRange +// +// Parameters +// pin: pin no on which pwm value is to be changed. Currently only 12 is allowed +// value: pwm value for given pin. This must be less than range value set +// Description +// This function changes pwm duty on specified pin. As for RPi, only one pin +// (pin 12) is available for hardware PWM. +// PWM frequency = (PWM Clock frequency/Clock divisor/range) +// PWM clock frequency = 19.2 MHz +// clock divisor is setup using RPI_HardPWMSetClock +// range is setup using RPI_HardPWMSetRange +// Actual PWM duty = value/range +// Examples +// +// See also +// RPI_HardPWMSetClock RPI_HardPWMSetRange +// +// Authors +// Siddhesh Wani +// ----------------------------------------------------------------- + +// This is curretly dummy function. It provides no functionality but is required +// for providing support for generating C code for RPi. +endfunction |