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731e199fc4
The octsimtest board can control the card-insert contact of the OCTSIM under test via an external I2C gpio multiplexer; let's add support for that. Change-Id: I8c9b0c3d862a967832134b24252577739182da62
28 lines
1.2 KiB
C
28 lines
1.2 KiB
C
/* mcp23017 i2c gpio expander read and write utilities
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
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*/
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#pragma once
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#define MCP23017_ADDRESS 0x20
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int mcp23017_init(uint8_t slave, uint8_t iodira, uint8_t iodirb);
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int mcp23017_test(uint8_t slave);
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int mcp23017_toggle(uint8_t slave);
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int mcp23017_set_output_a(uint8_t slave, uint8_t val);
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int mcp23017_set_output_b(uint8_t slave, uint8_t val);
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//int mcp23017_write_byte(uint8_t slave, uint8_t addr, uint8_t byte);
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//int mcp23017_read_byte(uint8_t slave, uint8_t addr);
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