andrewm@0: /*
andrewm@0:  * Utilities.h
andrewm@0:  *
andrewm@0:  *  Created on: Oct 27, 2014
andrewm@0:  *      Author: parallels
andrewm@0:  */
andrewm@0: 
andrewm@0: #ifndef UTILITIES_H_
andrewm@0: #define UTILITIES_H_
andrewm@0: 
andrewm@13: extern int gNumAudioChannels;	// How many audio channels are present
andrewm@13: extern int gNumMatrixChannels;	// How many matrix channels are present
andrewm@13: 
andrewm@5: // Macros for accessing the matrix values: usable _only_ within render()
andrewm@5: 
andrewm@5: // Read an analog input from input pin p at frame f
andrewm@13: #define analogRead(p, f) (matrixIn[(f)*gNumMatrixChannels + (p)])
andrewm@5: // Write an analog output frame at output pin p, frame f, to value v
andrewm@13: #define analogWrite(p, f, v) (matrixOut[(f)*gNumMatrixChannels + (p)] = (uint16_t)(v))
andrewm@5: 
giuliomoro@16: #define setBit(word,bit) ((word)|(1<<(bit)))
giuliomoro@16: #define clearBit(word,bit) ((word)&~(1<<(bit)))
giuliomoro@16: #define getBit(word,bit) (((word)>>(bit))&1)
giuliomoro@16: #define changeBit(word,bit,value) ((clearBit((word),(bit))) | ((value)<<(bit)))
giuliomoro@16: //matrixGpio API:
giuliomoro@16: #define setDigitalDirection(pin,frame,direction) matrixGpio[(frame)]=changeBit(matrixGpio[(frame)],(pin),(direction))
giuliomoro@16: #define digitalWriteAll(frame,value) matrixGpio[(frame)]=0xffff0000*(!(!value));
giuliomoro@16: //sets the bit in the high word, clears the bit in the low word (just in case the direction was not previously set)
giuliomoro@16: #define digitalWrite(pin, frame, value) matrixGpio[(frame)]=( changeBit(matrixGpio[(frame)], (pin+16), (value)) & (0xffffffff-(1<<(pin))) ) //could have been done with two subsequent assignments
giuliomoro@16: #define digitalRead(pin, frame) (   getBit(matrixGpio[(frame)], pin+16) )
giuliomoro@16: 
andrewm@0: float map(float x, float in_min, float in_max, float out_min, float out_max);
andrewm@0: float constrain(float x, float min_val, float max_val);
andrewm@0: 
andrewm@0: #endif /* UTILITIES_H_ */