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PCD
setup_power_pwm_pins(module x)
set_power_pwmx_duty(duty)
Configure the pins of the PWM to be in
Complimentary, ON or OFF mode.
Stores the value of the duty cycle in the PDCXL/H
register. This duty cycle value is the time for
which the PWM is in active state.
set_power_pwm_override(pwm,override,valu This function determines whether the OVDCONS
e)
Relevant Preprocessor:
None
Relevant Interrupts:
#INT_PWMTB
or the PDC registers determine the PWM output .
PWM Timebase Interrupt (Only available on
PIC18XX31)
Relevant getenv() Parameters:
None
Example Code:
....
long duty_cycle, period;
...
// Configures PWM pins to be ON,OFF or in Complimentary mode.
setup_power_pwm_pins(PWM_COMPLEMENTARY ,PWM_OFF, PWM_OFF, PWM_OFF);
//Sets up PWM clock , postscale and period. Here period is used to set the
//PWM Frequency as follows:
//Frequency = Fosc / (4 * (period+1) *postscale)
setup_power_pwm(PWM_CLOCK_DIV_4|PWM_FREE_RUN,1,0,period,0,1,0);
set_power_pwm0_duty(duty_cycle));
// Sets the duty cycle of the PWM 0,1 in
//Complementary mode
Program Eeprom
The Flash program memory is readable and writable in some chips and is just readable in
some. These options lets the user read and write to the Flash program memory. These
functions are only available in flash chips.
Relevant Functions:
read_program_eeprom(address)
Reads the program memory location (16 bit or 32 bit depending
the device).
48
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