ToZero_4x_SPI.h

/*	
ToZero_4x_SPI.h - Library for use with the ToZero 4x adapter board that maps
the pinout of the Teensy family of microcontrollers (3.2, 3.5, 3.6, LC) to
the Raspberry Pi GPIO header

Copyright (c) 2020 Christopher (@ZodiusInfuser) Parrott. All right reserved.
*/

#ifndef _TO_ZERO_4X_SPI_H
#define _TO_ZERO_4X_SPI_H

#include <ToZero_4x_GPIO.h>

#if defined(__IMXRT1062__)	//Teensy 4.0 & 4.1

	#include <SPI.h>

	static SPIClass& GPIO_SPI = SPI;
#if (defined(ARDUINO_TEENSY40) && !defined(NO_TEENSY_UNDERSIDE_PINS)) || defined(ARDUINO_TEENSY41)
	static SPIClass& BreakoutSPI = SPI1;
#endif

	#define GPIO_SPI_MOSI		GPIO_10
	#define GPIO_SPI_MISO		GPIO_9
	#define GPIO_SPI_SCK		GPIO_11
	#define GPIO_SPI_CE0		GPIO_8
#ifdef GPIO_7
	#define GPIO_SPI_CE1		GPIO_7
#endif

#if (defined(ARDUINO_TEENSY40) && !defined(NO_TEENSY_UNDERSIDE_PINS)) || defined(ARDUINO_TEENSY41)
	#define BREAKOUT_SPI_MOSI		26
	#define BREAKOUT_SPI_SCK		27
#endif

#if defined(ARDUINO_TEENSY40)
	#define BREAKOUT_SPI_MISO		1
	#define BREAKOUT_SPI_CE0		0
#elif defined(ARDUINO_TEENSY41)
	#define BREAKOUT_SPI_MISO		39
	#define BREAKOUT_SPI_CE0		38
#endif


	#define TO_ZERO_SPI_SETUP
	static inline void ToZero_SPI_Setup(void)
	{
	#if (defined(ARDUINO_TEENSY40) && !defined(NO_TEENSY_UNDERSIDE_PINS)) || defined(ARDUINO_TEENSY41)
		BreakoutSPI.setMISO(BREAKOUT_SPI_MISO);
		BreakoutSPI.setCS(BREAKOUT_SPI_CE0);
	#endif
	};

#if !defined(NO_TO_ZERO_WARNINGS)
	#pragma message "ToZero 4x SPI loaded. Remember to call ToZero_SPI_Setup(); in you Arduino setup() function."
#endif

#elif !defined(_TO_ZERO_4X_H) && !defined(TOZERO_BOARD_ERROR)
	#define TOZERO_BOARD_ERROR
	#error "Incompatible Board Selected. The ToZero 4x adapter only supports the Teensy 4.0 & 4.1. If using a Teensy 3.2, 3.5, 3.6 or LC then a ToZero 3x adapter will be needed."
#endif

#endif