Removed pesky piFaceOld.c

devLib/piFaceOld.c

@@ -1,178 +0,0 @@
-/*
- * piFace.:
- *	Arduino compatable (ish) Wiring library for the Raspberry Pi
- *	Copyright (c) 2012-2013 Gordon Henderson
- *
- *	This file to interface with the PiFace peripheral device which
- *	has an MCP23S17 GPIO device connected via the SPI bus.
- ***********************************************************************
- * This file is part of wiringPi:
- *	https://projects.drogon.net/raspberry-pi/wiringpi/
- *
- *    wiringPi is free software: you can redistribute it and/or modify
- *    it under the terms of the GNU Lesser General Public License as
- *    published by the Free Software Foundation, either version 3 of the
- *    License, or (at your option) any later version.
- *
- *    wiringPi is distributed in the hope that it will be useful,
- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *    GNU Lesser General Public License for more details.
- *
- *    You should have received a copy of the GNU Lesser General Public
- *    License along with wiringPi.
- *    If not, see <http://www.gnu.org/licenses/>.
- ***********************************************************************
- */
-
-
-#include <stdio.h>
-#include <stdint.h>
-
-#include <wiringPi.h>
-#include <wiringPiSPI.h>
-
-#include "../wiringPi/mcp23x0817.h"
-
-#include "piFace.h"
-
-#define	PIFACE_SPEED	4000000
-#define	PIFACE_DEVNO	0
-
-
-
-/*
- * writeByte:
- *	Write a byte to a register on the MCP23S17 on the SPI bus.
- *********************************************************************************
- */
-
-static void writeByte (uint8_t reg, uint8_t data)
-{
-  uint8_t spiData [4] ;
-
-  spiData [0] = CMD_WRITE ;
-  spiData [1] = reg ;
-  spiData [2] = data ;
-
-  wiringPiSPIDataRW (PIFACE_DEVNO, spiData, 3) ;
-}
-
-/*
- * readByte:
- *	Read a byte from a register on the MCP23S17 on the SPI bus.
- *********************************************************************************
- */
-
-static uint8_t readByte (uint8_t reg)
-{
-  uint8_t spiData [4] ;
-
-  spiData [0] = CMD_READ ;
-  spiData [1] = reg ;
-
-  wiringPiSPIDataRW (PIFACE_DEVNO, spiData, 3) ;
-
-  return spiData [2] ;
-}
-
-
-/*
- * myDigitalWrite:
- *	Perform the digitalWrite function on the PiFace board
- *********************************************************************************
- */
-
-void myDigitalWrite (struct wiringPiNodeStruct *node, int pin, int value)
-{
-  uint8_t mask, old ;
-
-  pin -= node->pinBase ;
-  mask = 1 << pin ;
-  old  = readByte (MCP23x17_GPIOA) ;
-
-  if (value == 0)
-    old &= (~mask) ;
-  else
-    old |=   mask ;
-
-  writeByte (MCP23x17_GPIOA, old) ;
-}
-
-
-/*
- * myDigitalRead:
- *	Perform the digitalRead function on the PiFace board
- *********************************************************************************
- */
-
-int myDigitalRead (struct wiringPiNodeStruct *node, int pin)
-{
-  uint8_t mask, reg ;
-
-  mask = 1 << ((pin - node->pinBase) & 7) ;
-
-  if (pin < 8)
-    reg = MCP23x17_GPIOB ;	// Input regsiter
-  else
-    reg = MCP23x17_OLATA ;	// Output latch regsiter
-
-  if ((readByte (reg) & mask) != 0)
-    return HIGH ;
-  else
-    return LOW ;
-}
-
-
-/*
- * myPullUpDnControl:
- *	Perform the pullUpDnControl function on the PiFace board
- *********************************************************************************
- */
-
-void myPullUpDnControl (struct wiringPiNodeStruct *node, int pin, int pud)
-{
-  uint8_t mask, old ;
-
-  mask = 1 << (pin - node->pinBase) ;
-  old  = readByte (MCP23x17_GPPUB) ;
-
-  if (pud == 0)
-    old &= (~mask) ;
-  else
-    old |=   mask ;
-
-  writeByte (MCP23x17_GPPUB, old) ;
-}
-
-
-/*
- * piFaceSetup
- *	Setup the SPI interface and initialise the MCP23S17 chip
- *	We create one node with 16 pins - each if the first 8 pins being read
- *	and write - although the operations actually go to different
- *	hardware ports. The top 8 let you read the state of the output register.
- *********************************************************************************
- */
-
-int piFaceSetup (const int pinBase)
-{
-  int    x ;
-  struct wiringPiNodeStruct *node ;
-
-  if ((x = wiringPiSPISetup (PIFACE_DEVNO, PIFACE_SPEED)) < 0)
-    return x ;
-
-// Setup the MCP23S17
-
-  writeByte (MCP23x17_IOCON,  IOCON_INIT) ;
-  writeByte (MCP23x17_IODIRA, 0x00) ;		// Port A -> Outputs
-  writeByte (MCP23x17_IODIRB, 0xFF) ;		// Port B -> Inputs
-
-  node = wiringPiNewNode (pinBase, 16) ;
-  node->digitalRead     = myDigitalRead ;
-  node->digitalWrite    = myDigitalWrite ;
-  node->pullUpDnControl = myPullUpDnControl ;
-
-  return 0 ;
-}