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PWM Lib API

 

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Library to support Pulse Width Modulation (PWM)

Macros

#define PWM_VER_MAJ  2 Version Info.
#define PWM_VER_MIN  1#define PWM_VER_BUILD  2#define COLIBRI_PWM1  0#define COLIBRI_PWM2  1#define COLIBRI_PWM3  2#define COLIBRI_PWM4  3#define APALIS_PWM1  3#define APALIS_PWM2  2#define APALIS_PWM3  1#define APALIS_PWM4  0

Functions

void  InitPWM (DWORD pwm, DWORD prescale, DWORD period)
void  SetPWMDuty (DWORD pwm, DWORD duty)
void  SetPWMDutyPercentage (DWORD pwm, DWORD duty)
void  DeInitPWM (DWORD pwm)
void  PWMGetLibVersion (DWORD *pVerMaj, DWORD *pVerMin, DWORD *pBuild)

Macro Definition Documentation

#define APALIS_PWM1   3
#define APALIS_PWM2   2
#define APALIS_PWM3   1
#define APALIS_PWM4   0
#define COLIBRI_PWM1   0
#define COLIBRI_PWM2   1
#define COLIBRI_PWM3   2
#define COLIBRI_PWM4   3
#define PWM_VER_BUILD   2
#define PWM_VER_MAJ   2

Version Info.

#define PWM_VER_MIN   1

Function Documentation

void DeInitPWM ( DWORD  pwm )

Deinitialise PWM Controller

Parameters:
[in] pwm,: channel to use (0-3)
void InitPWM ( DWORD  pwm,
DWORD  prescale,
DWORD  period
)

Initialise PWM Controller (0-3)

Parameters:
[in] prescale,: scale factor for the 13Mhz Clock (1-64)
[in] period,: period length in scaled clocks units. Note - This is fixed for Tegra 2 i.e. 256
void PWMGetLibVersion ( DWORD *  pVerMaj,
DWORD *  pVerMin,
DWORD *  pBuild
)

get the library version

Parameters:
Out] pVerMaj Returns the major version number. Set this parameter to NULL if not required.
Out] pVerMin: Returns the minor version number. Set this parameter to NULL if not required.
Out] pBuild: Returns the build number. Set this parameter to NULL if not required.
void SetPWMDuty ( DWORD  pwm,
DWORD  duty
)

Assign duty cycle in PWM Controller

Parameters:
[in] pwm,: channel to use (0-3)
[in] duty,: high time in scaled clocks units for each period i.e. 256
void SetPWMDutyPercentage ( DWORD  pwm,
DWORD  duty
)

Assign percentage duty cycle in PWM Controller

Parameters:
[in] pwm,: channel to use (0-3)
[in] duty,: high time in percantage (0-100)