49 lines
2.6 KiB
C
49 lines
2.6 KiB
C
/**************************************************************************
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* NAME: Johan Gärtner *
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* PURPOSE: Initialize driver for the PWM signal to certain outputs *
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* INFORMATION: *
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* GLOBAL VARIABLES: *
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* Variable Type Description *
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* -------- ---- ----------- *
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* **************************************************************************/
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#ifndef DRIVERS_PWM_H_
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#define DRIVERS_PWM_H_
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/**************************************************************************
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* BRIEF: pwmInit initializes a pwm signal to a certain pin output *
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* INFORMATION:
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* Example - pwmInit(GPIOB, GPIO_PIN_0, TIM3, TIM_CHANNEL_3, 2000, 100);
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* GPIO = selects GPIO output on processor
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* pin = selects pin output on processor
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* tim = Timer configuration
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* Channel = Selects a channel for a certain timer, each timer as 4 channels
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* period = Period of PWM signal
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* pulse = the "duty cycle" of the pwm signal *
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**************************************************************************/
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void pwmInit(GPIO_TypeDef * GPIO, uint16_t pin, TIM_TypeDef * tim, uint32_t Channel, uint16_t period, uint16_t pulse);
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/**************************************************************************
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* BRIEF: setPwmPulse changes a certain pulse for an initialized pwm signal *
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* INFORMATION: It's only possible to change the pwm output for a certain timer
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* on a certain channel, not a pin output
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* Example - setPwmPulse(TIM_CHANNEL_4, TIM3, 500); *
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**************************************************************************/
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void setPwmPulse(uint32_t Channel, TIM_TypeDef * tim, uint16_t newPulse);
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/**************************************************************************
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* BRIEF: startPwm Activates a pwm signal for a certain timer on a certain channel
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* INFORMATION:
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* Example - startPwm(TIM_CHANNEL_4, TIM3);
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**************************************************************************/
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void startPwm(uint32_t Channel, TIM_TypeDef * tim);
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/**************************************************************************
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* BRIEF: stopPwm Deactivates a pwm signal for a certain timer on a certain channel
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* INFORMATION:
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* Example - stopPwm(TIM_CHANNEL_4, TIM3);
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**************************************************************************/
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void stopPwm(uint32_t Channel, TIM_TypeDef * tim);
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#endif /* DRIVERS_PWM_H_ */
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