Input file for DE1 cl inputs and boards. More...

Detailed Description

Input file for DE1 cl inputs and boards.

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

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

From Martin Hinner's collection of data:

Timing values (display + (right border / front porch) + sync pulse + (back porch / left border))

640x480 @ 60Hz: 25.175MHz clk 640+16+ 96+48 = 800 480+10+2+33 = 525 -syncs 800x600 @ 60Hz: 40MHz clk 800+40+128+88 =1076 600+ 1+4+23 = 628 +syncs 1024x768 @ 60Hz: 65MHz clk 1024+24+136+160=1344 768+ 3+6+29 = 806 -syncs 1280x1024 @ 60Hz: 108MHz clk 1280+48+112+248=1688 1024+ 1+3+38 =1066 +syncs 1600x1200 @ 60Hz: 162MHz clk 1600+64+192+304=2160 1200+ 1+3+46 =1250 +syncs

Data Structures
struct	t_de1_cl_inputs_control

struct	t_rotary_motion_inputs

struct	t_de1_cl_inputs_status

struct	t_de1_cl_diamond

struct	t_de1_cl_joystick

struct	t_de1_cl_shift_register

struct	t_de1_cl_rotary

struct	t_de1_cl_user_inputs

struct	t_de1_cl_lcd

struct	t_de1_cl_shift_register_control

struct	t_de1_leds

Data Structure Documentation

struct t_de1_cl_inputs_control

Data Fields
bit	sr_clock	Not really a clock in the FPGA, but a signal toggled by the design
bit	sr_shift	Asserted high for rising sr_clock to shift the shift register; if low, the shift register is loaded from the pins

struct t_rotary_motion_inputs

Data Fields
bit	direction_pin
bit	transition_pin

struct t_de1_cl_inputs_status

Data Fields
t_rotary_motion_inputs	left_rotary
t_rotary_motion_inputs	right_rotary
bit	sr_data	Shift register output data

struct t_de1_cl_diamond

Data Fields
bit	a
bit	b
bit	x
bit	y

struct t_de1_cl_joystick

Data Fields
bit	c
bit	d
bit	l
bit	r
bit	u

struct t_de1_cl_shift_register

Data Fields
bit	diall_click
bit	dialr_click
t_de1_cl_diamond	diamond
t_de1_cl_joystick	joystick
bit	temperature_alarm
bit	touchpanel_irq

struct t_de1_cl_rotary

Data Fields
bit	direction
bit	direction_pulse
bit	pressed

struct t_de1_cl_user_inputs

Data Fields
t_de1_cl_diamond	diamond
t_de1_cl_joystick	joystick
t_de1_cl_rotary	left_dial
t_de1_cl_rotary	right_dial
bit	temperature_alarm
bit	touchpanel_irq
bit	updated_switches	Asserted if diamond, joystick, touchpanel_irq, temperature_alarm, and dial pressed bits have been updated

struct t_de1_cl_lcd

Data Fields
bit	backlight
bit[6]	blue
bit	display_enable
bit[7]	green
bit	hsync_n
bit[6]	red
bit	vsync_n

struct t_de1_cl_shift_register_control

Data Fields
bit	sr_clock
bit	sr_shift

struct t_de1_leds

Data Fields
bit[7]	h0
bit[7]	h1
bit[7]	h2
bit[7]	h3
bit[7]	h4
bit[7]	h5
bit[10]	leds

Modules

module bbc_micro_de1_cl_bbc	(	clock	clk,
		clock	video_clk,
		input bit	reset_n,
		input bit	bbc_reset_n,
		input bit	framebuffer_reset_n,
		output t_bbc_clock_control	clock_control,
		input t_bbc_keyboard	bbc_keyboard,
		output t_video_bus	video_bus,
		input t_csr_request	csr_request,
		output t_csr_response	csr_response
	)

Parameters

clk	50MHz clock from DE1 clock generator
video_clk	9MHz clock from PLL, derived from 50MHz
reset_n	hard reset from a pin - a key on DE1

module bbc_micro_de1_cl_io	(	clock	clk,
		clock	video_clk,
		input bit	reset_n,
		input bit	bbc_reset_n,
		input bit	framebuffer_reset_n,
		input bit	keys[4],
		input bit	switches[10],
		input t_bbc_clock_control	clock_control,
		output t_bbc_keyboard	bbc_keyboard,
		output t_video_bus	video_bus,
		output t_csr_request	csr_request,
		input t_csr_response	csr_response,
		input t_ps2_pins	ps2_in,
		output t_ps2_pins	ps2_out,
		input t_de1_cl_inputs_status	inputs_status,
		output t_de1_cl_inputs_control	inputs_control,
		output bit	leds[10],
		output bit	lcd_source,
		output bit	led_chain
	)

Parameters

clk	50MHz clock from DE1 clock generator
video_clk	9MHz clock from PLL, derived from 50MHz
reset_n	hard reset from a pin - a key on DE1
ps2_in	PS2 input pins
ps2_out	PS2 output pin driver open collector
inputs_status	DE1 CL daughterboard shifter register etc status
inputs_control	DE1 CL daughterboard shifter register control

module de1_cl_controls	(	clock	clk,
		input bit	reset_n,
		output t_de1_cl_inputs_control	inputs_control,
		input t_de1_cl_inputs_status	inputs_status,
		output t_de1_cl_user_inputs	user_inputs,
		input bit	sr_divider[8]
	)

Parameters

[in]	clk	system clock - not the shift register pin, something faster
[in]	reset_n	async reset
[out]	inputs_control	Signals to the shift register etc on the DE1 CL daughterboard
[in]	inputs_status	Signals from the shift register, rotary encoders, etc on the DE1 CL daughterboard
[out]	user_inputs
[in]	sr_divider	clock divider to control speed of shift register

Detailed Description

Data Structures

Data Structure Documentation

Modules