| Linduino 1.3.0 Linear Technology Arduino-Compatible Demonstration Board

Files
LT_SPI: Routines to communicate with ATmega328P's hardware SPI port.
Linduino: Linear Technology Arduino-Compatible Demonstration Board Support Libraries

LT_SPI: Routines to communicate with ATmega328P's hardware SPI port. More...

## Files
file | LT_SPI.cpp
| Library for LT_SPI: Routines to communicate with ATmega328P's hardware SPI port.
file | LT_SPI.h
| LT_SPI: Routines to communicate with ATmega328P's hardware SPI port.

## Detailed Description

LT_SPI: Routines to communicate with ATmega328P's hardware SPI port.

    LT_SPI implements the low level master SPI bus routines using
    the hardware SPI port.

    SPI Frequency = (CPU Clock frequency)/(16+2(TWBR)*Prescaler)
    SPCR = SPI Control Register (SPIE SPE DORD MSTR CPOL CPHA SPR1 SPR0)
    SPSR = SPI Status Register (SPIF WCOL - - - - - SPI2X)

    Data Modes:
    CPOL  CPHA  Leading Edge    Trailing Edge
    0      0    sample rising   setup falling
    0      1    setup rising    sample falling
    1      0    sample falling  setup rising
    1      1    sample rising   setup rising

    CPU Frequency = 16MHz on Arduino Uno
    SCK Frequency
    SPI2X  SPR1  SPR0  Frequency  Uno_Frequency
      0      0     0     fosc/4     4 MHz
      0      0     1     fosc/16    1 MHz
      0      1     0     fosc/64    250 kHz
      0      1     1     fosc/128   125 kHz
      0      0     0     fosc/2     8 MHz
      0      0     1     fosc/8     2 MHz
      0      1     0     fosc/32    500 kHz

Copyright 2018(c) Analog Devices, Inc.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
- The use of this software may or may not infringe the patent rights of one or more patent holders. This license does not release you from the requirement that you obtain separate licenses from these patent holders to use this software.
- Use of the software either in source or binary form, must be run on or directly connected to an Analog Devices Inc. component.

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