input_devices.h File Reference

Input device header file for CDL modules. More...

Detailed Description

Input device header file for CDL modules.

Copyright (C) 2016-2017, Gavin J Stark. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Header file for the types and CDL modules for input devices

Copyright (C) 2016-2018, Gavin J Stark. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Header file for the types and CDL modules for input devices

Data Structures
struct	t_ps2_pins
struct	t_ps2_rx_data
struct	t_ps2_key_state

---

Data Structure Documentation

struct t_ps2_pins

Data Fields
bit	clk
bit	data

struct t_ps2_rx_data

Data Fields
bit[8]	data
bit	parity_error
bit	protocol_error
bit	timeout
bit	valid

struct t_ps2_key_state

Data Fields
bit	extended
bit[8]	key_number
bit	release
bit	valid

Modules

module ps2_host	(	clock	clk,
		input bit	reset_n,
		input t_ps2_pins	ps2_in,
		output t_ps2_pins	ps2_out,
		output t_ps2_rx_data	ps2_rx_data,
		input bit	divider[16]
	)

Parameters

[in]	clk	Clock
[in]	ps2_in	Pin values from the outside
[out]	ps2_out	Pin values to drive - 1 means float high, 0 means pull low

module ps2_host_keyboard	(	clock	clk,
		input bit	reset_n,
		input t_ps2_rx_data	ps2_rx_data,
		output t_ps2_key_state	ps2_key
	)

Parameters

clk

Clock