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72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/* demo_io.hpp: sample UNIBUS controller with Linux GPIO logic
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Copyright (c) 2018, Joerg Hoppe
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j_hoppe@t-online.de, www.retrocmp.com
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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JOERG HOPPE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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12-nov-2018 JH entered beta phase
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*/
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#ifndef _DEMO_IO_HPP_
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#define _DEMO_IO_HPP_
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#include <fstream>
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using namespace std;
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#include "utils.hpp"
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#include "unibusdevice.hpp"
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class demo_io_c: public unibusdevice_c {
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private:
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unibusdevice_register_t *switch_reg;
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unibusdevice_register_t *display_reg;
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// file handles for GPIO pins
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fstream gpio_inputs[5]; // 4 switches, 1 button
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fstream gpio_outputs[4]; // 4 LEDs
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void gpio_open(fstream& value_stream, bool is_input, unsigned gpio_number);
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unsigned gpio_get_input(unsigned input_index);
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void gpio_set_output(unsigned output_index, unsigned value);
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public:
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demo_io_c();
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~demo_io_c();
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bool on_param_changed(parameter_c *param) override; // must implement
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parameter_bool_c switch_feedback = parameter_bool_c(this, "switch_feedback", "sf",/*readonly*/
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false, "1 = hard wire Switches to LEDs, PDP-11 can not set LEDs");
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// background worker function
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void worker(unsigned instance) override;
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// called by unibusadapter on emulated register access
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void on_after_register_access(unibusdevice_register_t *device_reg, uint8_t unibus_control)
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override;
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void on_power_changed(void) override;
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void on_init_changed(void) override;
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};
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#endif
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