Base Class for all PWM drivers. More...
#include <PWMAudioBase.h>
Inheritance diagram for DriverPWMBase:
Public Member Functions | |
| PWMConfig & | audioInfo () |
| virtual int | availableForWrite () |
| bool | begin (PWMConfig cfg) |
| virtual PWMConfig | defaultConfig () |
| virtual int | effectiveOutputSampleRate () |
| Provides the effective sample rate. | |
| virtual void | end () |
| uint32_t | framesPerSecond () |
| bool | isTimerStarted () |
| virtual int | maxChannels ()=0 |
| virtual int | maxOutputValue ()=0 |
| virtual void | pwmWrite (int channel, int value)=0 |
| void | setBuffer (BaseBuffer< uint8_t > *buffer) |
| virtual void | setupPWM ()=0 |
| virtual void | setupTimer ()=0 |
| virtual void | startTimer ()=0 |
| uint32_t | underflowsPerSecond () |
| void | updateStatistics () |
| virtual size_t | write (const uint8_t *data, size_t len) |
Protected Member Functions | |
| virtual int | decimation () |
| Decimation factor to reduce the sample rate. | |
| void | deleteBuffer () |
| virtual bool | isDecimateActive () |
| virtual int | maxSampleRate () |
| Provides the max working sample rate. | |
| virtual int | nextValue () |
| determines the next scaled value | |
| void | playNextFrame () |
| writes the next frame to the output pins | |
Protected Attributes | |
| AudioInfo | actual_info |
| PWMConfig | audio_config |
| BaseBuffer< uint8_t > * | buffer = nullptr |
| Decimate | decimate |
| int | decimation_factor = 0 |
| uint32_t | frame_count = 0 |
| uint32_t | frame_size = 0 |
| uint32_t | frames_per_second = 0 |
| bool | is_blocking_write = true |
| bool | is_timer_started = false |
| uint32_t | time_1_sec |
| uint32_t | underflow_count = 0 |
| uint32_t | underflow_per_second = 0 |
Detailed Description
Base Class for all PWM drivers.
Member Function Documentation
◆ isDecimateActive()
|
inlineprotectedvirtual |
The requested sampling rate is too hight: we only process half of the samples so we can half the sampling rate
◆ setBuffer()
|
inline |
You can assign your own custom buffer impelementation: must be allocated on the heap and will be cleaned up by this class
The documentation for this class was generated from the following file:
- src/AudioTools/CoreAudio/AudioPWM/PWMAudioBase.h
