Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
added a menu option to choose just the ROM, SRAM save data or both
- Loading branch information
Showing
2 changed files
with
155 additions
and
25 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,87 @@ | ||
/* | ||
* mcp23xxx: | ||
* Copyright (c) 2012-2013 Gordon Henderson | ||
* | ||
* Header file for code using the MCP23x08 and 17 GPIO expander | ||
* chips. | ||
* This comes in 2 flavours: MCP230xx (08/17) which has an I2C | ||
* interface, and the MXP23Sxx (08/17) which has an SPI interface. | ||
*********************************************************************** | ||
* 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/>. | ||
*********************************************************************** | ||
*/ | ||
|
||
// MCP23x08 Registers | ||
|
||
#define MCP23x08_IODIR 0x00 | ||
#define MCP23x08_IPOL 0x01 | ||
#define MCP23x08_GPINTEN 0x02 | ||
#define MCP23x08_DEFVAL 0x03 | ||
#define MCP23x08_INTCON 0x04 | ||
#define MCP23x08_IOCON 0x05 | ||
#define MCP23x08_GPPU 0x06 | ||
#define MCP23x08_INTF 0x07 | ||
#define MCP23x08_INTCAP 0x08 | ||
#define MCP23x08_GPIO 0x09 | ||
#define MCP23x08_OLAT 0x0A | ||
|
||
// MCP23x17 Registers | ||
|
||
#define MCP23x17_IODIRA 0x00 | ||
#define MCP23x17_IPOLA 0x02 | ||
#define MCP23x17_GPINTENA 0x04 | ||
#define MCP23x17_DEFVALA 0x06 | ||
#define MCP23x17_INTCONA 0x08 | ||
#define MCP23x17_IOCON 0x0A | ||
#define MCP23x17_GPPUA 0x0C | ||
#define MCP23x17_INTFA 0x0E | ||
#define MCP23x17_INTCAPA 0x10 | ||
#define MCP23x17_GPIOA 0x12 | ||
#define MCP23x17_OLATA 0x14 | ||
|
||
#define MCP23x17_IODIRB 0x01 | ||
#define MCP23x17_IPOLB 0x03 | ||
#define MCP23x17_GPINTENB 0x05 | ||
#define MCP23x17_DEFVALB 0x07 | ||
#define MCP23x17_INTCONB 0x09 | ||
#define MCP23x17_IOCONB 0x0B | ||
#define MCP23x17_GPPUB 0x0D | ||
#define MCP23x17_INTFB 0x0F | ||
#define MCP23x17_INTCAPB 0x11 | ||
#define MCP23x17_GPIOB 0x13 | ||
#define MCP23x17_OLATB 0x15 | ||
|
||
// Bits in the IOCON register | ||
|
||
#define IOCON_UNUSED 0x01 | ||
#define IOCON_INTPOL 0x02 | ||
#define IOCON_ODR 0x04 | ||
#define IOCON_HAEN 0x08 | ||
#define IOCON_DISSLW 0x10 | ||
#define IOCON_SEQOP 0x20 | ||
#define IOCON_MIRROR 0x40 | ||
#define IOCON_BANK_MODE 0x80 | ||
|
||
// Default initialisation mode | ||
|
||
#define IOCON_INIT (IOCON_SEQOP) | ||
|
||
// SPI Command codes | ||
|
||
#define CMD_WRITE 0x40 | ||
#define CMD_READ 0x41 |
eeec279
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
adds the enhancement in Issue #3