URL https://opencores.org/ocsvn/wb_lcd/wb_lcd/trunk

Subversion Repositories wb_lcd

[/] [wb_lcd/] [trunk/] [myhdl/] [wb_lcd_workspace/] [workspace/] [.metadata/] [.plugins/] [org.eclipse.core.resources/] [.history/] [1/] [e05b56f74528001e15fef55832b875da] - Blame information for rev 2

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from myhdl import *
 
t_TxState = enum('tx_high_setup', 'tx_high_hold', 'tx_oneus', 'tx_low_setup', 'tx_low_hold', 'tx_fortyus', 'tx_done');
t_State = enum('display_init', 'init_fifteenms', 'init_one', 'init_two', 'init_three', 'init_four', 'init_five', 'init_six', 'init_seven', 'init_eight', 'display_function_set', 'display_entry_set', 'display_set_display', 'display_clr_display', 'display_pause_setup', 'display_pause', 'display_set_addr1', 'display_char_write1', 'display_set_addr2', 'display_char_write2','display_done')
 
def delayCounter(clk, reset, count, load, done, width = 13):
 
    counter = Signal(intbv(0)[width:0])
 
    @always_comb
    def done_logic():
        done.next = (counter == 0)
 
    @always(clk.posedge)
    def countdown_logic():
        if load:
            counter.next = count
        else: #elif not done:
            counter.next = counter - 1
 
    return instances()
 
 
 
def lcd(clk, reset, dat, addr, we, repaint, busy, SF_D, LCD_E, LCD_RS, LCD_RW):
 
 
    state = Signal(t_State.display_init)
    tx_state = Signal(t_TxState.tx_done)
    tx_byte = Signal(intbv(0)[8:0])
    tx_init = Signal(bool())
    tx_done = Signal(bool())
    LCD_E0 = Signal(bool())
    SF_D0 = Signal(intbv(0)[4:0])
    LCD_E1 = Signal(bool())
    SF_D1 = Signal(intbv(0)[4:0])
    pos = Signal(intbv(0)[7:0])
    MEM_LOW1 =0
    MEM_LOW2 =15
    MEM_HIGH1 =40
    MEM_HIGH2 =55
 
    @always_comb
    def busy_and_rw_handlers():
        busy.next = (state != t_State.display_done)
        LCD_RW.next = 0
 
    # Memory interface
    ram = [Signal(intbv(0)[31:0]) for i in range(67)]
 
    @always(clk.posedge)
    def memWrite():
        if we:
            ram[int(addr)].next = dat
 
 
    #Delay counter
    main_delay_load = Signal(bool())
    main_delay_value = Signal(intbv(0)[20:0])
 
    tx_delay_load = Signal(bool())
    main_delay_load = Signal(bool())
    delay_load = Signal(bool())
 
    tx_delay_value = Signal(intbv(0)[20:0])
    main_delay_value = Signal(intbv(0)[20:0])
    delay_value = Signal(intbv(0)[20:0])
 
    delay_done = Signal(bool())
    output_selector  = Signal(bool())
    counter = delayCounter(clk, reset, delay_value, delay_load, delay_done, width = 21)
 
    @always_comb
    def conunter_sharing_load():
        delay_load.next = tx_delay_load or main_delay_load
 
    @always_comb
    def conunter_sharing_value():
        if tx_delay_load:
            delay_value.next = tx_delay_value
        else:
            delay_value.next = main_delay_value
 
 
    # SF_D and LCD_E management for sharing between Init and TX phases.
    @always_comb
    def output_tx_or_init_select(): # 0 tx; 1 init
        output_selector.next = (state == t_State.display_init) | (state == t_State.init_fifteenms) | (state == t_State.init_one) | (state == t_State.init_two) | (state == t_State.init_three) | (state == t_State.init_four) | (state == t_State.init_five) | (state == t_State.init_six) | (state == t_State.init_seven) | (state == t_State.init_eight)
 
    @always_comb
    def output_tx_or_init_mux():
        if output_selector: # Init
            SF_D.next = SF_D1
            LCD_E.next = LCD_E1
        else: # TX
            SF_D.next = SF_D0
            LCD_E.next = LCD_E0
 
 
    @always_comb
    def init_transmissions():
        tx_init.next = (~tx_done) & ((state == t_State.display_function_set) | (state == t_State.display_entry_set) | (state == t_State.display_set_display) | (state == t_State.display_clr_display) | (state == t_State.display_set_addr1) | (state == t_State.display_char_write1) | (state == t_State.display_set_addr2) | (state == t_State.display_char_write2))
        LCD_RS.next = ~(bool(state == t_State.display_function_set) | (state == t_State.display_entry_set) | (state == t_State.display_set_display) | (state == t_State.display_clr_display) | (state == t_State.display_set_addr1) | (state == t_State.display_set_addr2))
 
    @always(clk.posedge, reset.posedge)
    def DisplayFSM():
        if reset == 1:
            state.next = t_State.display_init
            main_delay_load.next = 0
            main_delay_value.next = 0
        else:
            main_delay_load.next = 0;
            main_delay_value.next = 0;
            if state == t_State.display_init:
                tx_byte.next = 00000000
 
                state.next = t_State.init_fifteenms
                main_delay_load.next = 1
                main_delay_value.next = 750000
 
            elif state == t_State.init_fifteenms:
                main_delay_load.next = 0
 
                if delay_done:
                    state.next = t_State.init_one;
                    main_delay_load.next = 1
                    main_delay_value.next = 11
 
            elif state == t_State.init_one:
                main_delay_load.next = 0
                SF_D1.next = 3
                LCD_E1.next = 1
 
                if delay_done:
                    state.next = t_State.init_two;
                    main_delay_load.next = 1
                    main_delay_value.next = 205000
 
            elif state == t_State.init_two:
                main_delay_load.next = 0
                LCD_E1.next = 0
 
                if delay_done:
                    state.next = t_State.init_three;
                    main_delay_load.next = 1
                    main_delay_value.next = 11
 
            elif state == t_State.init_three:
                main_delay_load.next = 0
                SF_D1.next = 0011
                LCD_E1.next = 1
 
                if delay_done:
                    state.next = t_State.init_four;
                    main_delay_load.next = 1
                    main_delay_value.next = 5000
 
            elif state == t_State.init_four:
                main_delay_load.next = 0
                LCD_E1.next = 0
 
                if delay_done:
                    state.next = t_State.init_five;
                    main_delay_load.next = 1
                    main_delay_value.next = 11
 
 
            elif state == t_State.init_five:
                main_delay_load.next = 0
                SF_D1.next = 0011
                LCD_E1.next = 1
 
                if delay_done:
                    state.next = t_State.init_six;
                    main_delay_load.next = 1
                    main_delay_value.next = 2000
 
            elif state == t_State.init_six:
                main_delay_load.next = 0
                LCD_E1.next = 0
 
                if delay_done:
                    state.next = t_State.init_seven;
                    main_delay_load.next = 1
                    main_delay_value.next = 11
 
            elif state == t_State.init_seven:
                main_delay_load.next = 0
                SF_D1.next = 0010
                LCD_E1.next = 1
 
                if delay_done:
                    state.next = t_State.init_eight;
                    main_delay_load.next = 1
                    main_delay_value.next = 2000
 
            elif state == t_State.init_eight:
                main_delay_load.next = 0
                LCD_E1.next = 0
 
                if delay_done:
                    state.next = t_State.display_function_set;
 
            elif state == t_State.display_function_set:
                tx_byte.next = 00101000;
                if tx_done:
                    state.next = t_State.display_entry_set
 
            elif state == t_State.display_entry_set:
                tx_byte.next = 00000110;
                if tx_done:
                    state.next = t_State.display_set_display
 
            elif state == t_State.display_set_display:
                tx_byte.next = 00001100;
                if tx_done:
                    state.next = t_State.display_clr_display
 
            elif state == t_State.display_clr_display:
                tx_byte.next = 00000001;
                if tx_done:
                    state.next = t_State.display_pause_setup
                    main_delay_load.next = 1
                    main_delay_value.next = 82000
 
            elif state == t_State.display_pause_setup:
                state.next = t_State.display_pause
 
            elif state == t_State.display_pause:
                tx_byte.next = 00000000;
 
                if delay_done:
                    state.next = t_State.display_set_addr1;
 
            elif state == t_State.display_set_addr1:
                tx_byte.next = 00000000;
                if tx_done:
                    state.next = t_State.display_char_write1
                    pos.next = MEM_LOW1
 
            elif state == t_State.display_char_write1:
                tx_byte.next = ram[pos]
                if tx_done:
                    if pos == MEM_HIGH1:
                        state.next = t_State.display_set_addr1;
                    else:
                        pos.next = pos + 1
            elif state == t_State.display_set_addr2:
                tx_byte.next = 11000000;
                if tx_done:
                    state.next = t_State.display_char_write2
                    pos.next = MEM_LOW2
 
            elif state == t_State.display_char_write2:
                tx_byte.next = ram[pos]
                if tx_done:
                    if pos == MEM_HIGH2:
                        state.next = t_State.display_done;
                    else:
                        pos.next = pos + 1
 
            elif state == t_State.display_done:
                tx_byte.next = 00000000;
 
                if repaint:
                    state.next = t_State.display_function_set
                else:
                    state.next = t_State.display_done
 
            else:
 
                raise ValueError("Undefined Display state")
 
 
 
    @always(clk.posedge, reset.posedge)
    def TxFSM():
        if reset == 1:
            tx_state.next = t_TxState.tx_done
        else:
            if tx_state == t_TxState.tx_high_setup:
                LCD_E0.next = 0
                SF_D0.next = tx_byte[8 : 4]
                tx_delay_load.next = 0
                if delay_done:
                    tx_state.next = t_TxState.tx_high_hold
                    tx_delay_load.next = 1
                    tx_delay_value.next = 12
 
            elif tx_state == t_TxState.tx_high_hold:
                LCD_E0.next = 1
                SF_D0.next = tx_byte[8 : 4]
                tx_delay_load.next = 0
                if delay_done:
                    tx_state.next = t_TxState.tx_oneus
                    tx_delay_load.next = 1
                    tx_delay_value.next = 50
 
            elif tx_state == t_TxState.tx_oneus:
                LCD_E0.next = 0
                tx_delay_load.next = 0
                if delay_done:
                    tx_state.next = t_TxState.tx_low_setup
                    tx_delay_load.next = 1
                    tx_delay_value.next = 2
 
            elif tx_state == t_TxState.tx_low_setup:
                LCD_E0.next = 0
                SF_D0.next = tx_byte[4 : 0]
                tx_delay_load.next = 0
                if delay_done:
                    tx_state.next = t_TxState.tx_low_hold
                    tx_delay_load.next = 1
                    tx_delay_value.next = 12
 
            elif tx_state == t_TxState.tx_low_hold:
                LCD_E0.next = 1
                SF_D0.next = tx_byte[4 : 0]
                tx_delay_load.next = 0
                if delay_done:
                    tx_state.next = t_TxState.tx_fortyus
                    tx_delay_load.next = 1
                    tx_delay_value.next = 2000
 
            elif tx_state == t_TxState.tx_fortyus:
                LCD_E0.next = 0
                tx_delay_load.next = 0
                if delay_done:
                    tx_state.next = t_TxState.tx_done
                    tx_done.next = 1
 
            elif tx_state == t_TxState.tx_done:
                LCD_E0.next = 0
                tx_done.next = 0
                tx_delay_load.next = 0
                if tx_init:
                    tx_state.next = t_TxState.tx_high_setup
                    tx_delay_load.next = 1
                    tx_delay_value.next = 2
            else:
                raise ValueError("Undefined TX state")
 
    return instances()
 
def main():
    width = 20
 
    count = Signal(intbv(0)[width:0])
    clk, reset, we, repaint, busy, LCD_E, LCD_RS, LCD_RW = [Signal(bool(0)) for i in range(8)]
    dat = Signal(intbv(0)[32:0])
    addr = Signal(intbv(0)[7:0])
    SF_D = Signal(intbv(0)[4:0])
 
    toVerilog(lcd,clk, reset, dat, addr, we, repaint, busy, SF_D, LCD_E, LCD_RS, LCD_RW)
#    toVHDL(delayCounter, clk, reset, count, load, done, width)
if __name__ == '__main__':
    main()
 

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Subversion Repositories wb_lcd

[/] [wb_lcd/] [trunk/] [myhdl/] [wb_lcd_workspace/] [workspace/] [.metadata/] [.plugins/] [org.eclipse.core.resources/] [.history/] [1/] [e05b56f74528001e15fef55832b875da] - Blame information for rev 2

Line No.	Rev	Author	Line
1	2	jvillar	`from myhdl import *`
2
3			`t_TxState = enum('tx_high_setup', 'tx_high_hold', 'tx_oneus', 'tx_low_setup', 'tx_low_hold', 'tx_fortyus', 'tx_done');`
4			`t_State = enum('display_init', 'init_fifteenms', 'init_one', 'init_two', 'init_three', 'init_four', 'init_five', 'init_six', 'init_seven', 'init_eight', 'display_function_set', 'display_entry_set', 'display_set_display', 'display_clr_display', 'display_pause_setup', 'display_pause', 'display_set_addr1', 'display_char_write1', 'display_set_addr2', 'display_char_write2','display_done')`
5
6			`def delayCounter(clk, reset, count, load, done, width = 13):`
7
8			`counter = Signal(intbv(0)[width:0])`
9
10			`@always_comb`
11			`def done_logic():`
12			`done.next = (counter == 0)`
13
14			`@always(clk.posedge)`
15			`def countdown_logic():`
16			`if load:`
17			`counter.next = count`
18			`else: #elif not done:`
19			`counter.next = counter - 1`
20
21			`return instances()`
22
23
24
25			`def lcd(clk, reset, dat, addr, we, repaint, busy, SF_D, LCD_E, LCD_RS, LCD_RW):`
26
27
28			`state = Signal(t_State.display_init)`
29			`tx_state = Signal(t_TxState.tx_done)`
30			`tx_byte = Signal(intbv(0)[8:0])`
31			`tx_init = Signal(bool())`
32			`tx_done = Signal(bool())`
33			`LCD_E0 = Signal(bool())`
34			`SF_D0 = Signal(intbv(0)[4:0])`
35			`LCD_E1 = Signal(bool())`
36			`SF_D1 = Signal(intbv(0)[4:0])`
37			`pos = Signal(intbv(0)[7:0])`
38			`MEM_LOW1 =0`
39			`MEM_LOW2 =15`
40			`MEM_HIGH1 =40`
41			`MEM_HIGH2 =55`
42
43			`@always_comb`
44			`def busy_and_rw_handlers():`
45			`busy.next = (state != t_State.display_done)`
46			`LCD_RW.next = 0`
47
48			`# Memory interface`
49			`ram = [Signal(intbv(0)[31:0]) for i in range(67)]`
50
51			`@always(clk.posedge)`
52			`def memWrite():`
53			`if we:`
54			`ram[int(addr)].next = dat`
55
56
57			`#Delay counter`
58			`main_delay_load = Signal(bool())`
59			`main_delay_value = Signal(intbv(0)[20:0])`
60
61			`tx_delay_load = Signal(bool())`
62			`main_delay_load = Signal(bool())`
63			`delay_load = Signal(bool())`
64
65			`tx_delay_value = Signal(intbv(0)[20:0])`
66			`main_delay_value = Signal(intbv(0)[20:0])`
67			`delay_value = Signal(intbv(0)[20:0])`
68
69			`delay_done = Signal(bool())`
70			`output_selector = Signal(bool())`
71			`counter = delayCounter(clk, reset, delay_value, delay_load, delay_done, width = 21)`
72
73			`@always_comb`
74			`def conunter_sharing_load():`
75			`delay_load.next = tx_delay_load or main_delay_load`
76
77			`@always_comb`
78			`def conunter_sharing_value():`
79			`if tx_delay_load:`
80			`delay_value.next = tx_delay_value`
81			`else:`
82			`delay_value.next = main_delay_value`
83
84
85			`# SF_D and LCD_E management for sharing between Init and TX phases.`
86			`@always_comb`
87			`def output_tx_or_init_select(): # 0 tx; 1 init`
88			`output_selector.next = (state == t_State.display_init) \| (state == t_State.init_fifteenms) \| (state == t_State.init_one) \| (state == t_State.init_two) \| (state == t_State.init_three) \| (state == t_State.init_four) \| (state == t_State.init_five) \| (state == t_State.init_six) \| (state == t_State.init_seven) \| (state == t_State.init_eight)`
89
90			`@always_comb`
91			`def output_tx_or_init_mux():`
92			`if output_selector: # Init`
93			`SF_D.next = SF_D1`
94			`LCD_E.next = LCD_E1`
95			`else: # TX`
96			`SF_D.next = SF_D0`
97			`LCD_E.next = LCD_E0`
98
99
100			`@always_comb`
101			`def init_transmissions():`
102			`tx_init.next = (~tx_done) & ((state == t_State.display_function_set) \| (state == t_State.display_entry_set) \| (state == t_State.display_set_display) \| (state == t_State.display_clr_display) \| (state == t_State.display_set_addr1) \| (state == t_State.display_char_write1) \| (state == t_State.display_set_addr2) \| (state == t_State.display_char_write2))`
103			`LCD_RS.next = ~(bool(state == t_State.display_function_set) \| (state == t_State.display_entry_set) \| (state == t_State.display_set_display) \| (state == t_State.display_clr_display) \| (state == t_State.display_set_addr1) \| (state == t_State.display_set_addr2))`
104
105			`@always(clk.posedge, reset.posedge)`
106			`def DisplayFSM():`
107			`if reset == 1:`
108			`state.next = t_State.display_init`
109			`main_delay_load.next = 0`
110			`main_delay_value.next = 0`
111			`else:`
112			`main_delay_load.next = 0;`
113			`main_delay_value.next = 0;`
114			`if state == t_State.display_init:`
115			`tx_byte.next = 00000000`
116
117			`state.next = t_State.init_fifteenms`
118			`main_delay_load.next = 1`
119			`main_delay_value.next = 750000`
120
121			`elif state == t_State.init_fifteenms:`
122			`main_delay_load.next = 0`
123
124			`if delay_done:`
125			`state.next = t_State.init_one;`
126			`main_delay_load.next = 1`
127			`main_delay_value.next = 11`
128
129			`elif state == t_State.init_one:`
130			`main_delay_load.next = 0`
131			`SF_D1.next = 3`
132			`LCD_E1.next = 1`
133
134			`if delay_done:`
135			`state.next = t_State.init_two;`
136			`main_delay_load.next = 1`
137			`main_delay_value.next = 205000`
138
139			`elif state == t_State.init_two:`
140			`main_delay_load.next = 0`
141			`LCD_E1.next = 0`
142
143			`if delay_done:`
144			`state.next = t_State.init_three;`
145			`main_delay_load.next = 1`
146			`main_delay_value.next = 11`
147
148			`elif state == t_State.init_three:`
149			`main_delay_load.next = 0`
150			`SF_D1.next = 0011`
151			`LCD_E1.next = 1`
152
153			`if delay_done:`
154			`state.next = t_State.init_four;`
155			`main_delay_load.next = 1`
156			`main_delay_value.next = 5000`
157
158			`elif state == t_State.init_four:`
159			`main_delay_load.next = 0`
160			`LCD_E1.next = 0`
161
162			`if delay_done:`
163			`state.next = t_State.init_five;`
164			`main_delay_load.next = 1`
165			`main_delay_value.next = 11`
166
167
168			`elif state == t_State.init_five:`
169			`main_delay_load.next = 0`
170			`SF_D1.next = 0011`
171			`LCD_E1.next = 1`
172
173			`if delay_done:`
174			`state.next = t_State.init_six;`
175			`main_delay_load.next = 1`
176			`main_delay_value.next = 2000`
177
178			`elif state == t_State.init_six:`
179			`main_delay_load.next = 0`
180			`LCD_E1.next = 0`
181
182			`if delay_done:`
183			`state.next = t_State.init_seven;`
184			`main_delay_load.next = 1`
185			`main_delay_value.next = 11`
186
187			`elif state == t_State.init_seven:`
188			`main_delay_load.next = 0`
189			`SF_D1.next = 0010`
190			`LCD_E1.next = 1`
191
192			`if delay_done:`
193			`state.next = t_State.init_eight;`
194			`main_delay_load.next = 1`
195			`main_delay_value.next = 2000`
196
197			`elif state == t_State.init_eight:`
198			`main_delay_load.next = 0`
199			`LCD_E1.next = 0`
200
201			`if delay_done:`
202			`state.next = t_State.display_function_set;`
203
204			`elif state == t_State.display_function_set:`
205			`tx_byte.next = 00101000;`
206			`if tx_done:`
207			`state.next = t_State.display_entry_set`
208
209			`elif state == t_State.display_entry_set:`
210			`tx_byte.next = 00000110;`
211			`if tx_done:`
212			`state.next = t_State.display_set_display`
213
214			`elif state == t_State.display_set_display:`
215			`tx_byte.next = 00001100;`
216			`if tx_done:`
217			`state.next = t_State.display_clr_display`
218
219			`elif state == t_State.display_clr_display:`
220			`tx_byte.next = 00000001;`
221			`if tx_done:`
222			`state.next = t_State.display_pause_setup`
223			`main_delay_load.next = 1`
224			`main_delay_value.next = 82000`
225
226			`elif state == t_State.display_pause_setup:`
227			`state.next = t_State.display_pause`
228
229			`elif state == t_State.display_pause:`
230			`tx_byte.next = 00000000;`
231
232			`if delay_done:`
233			`state.next = t_State.display_set_addr1;`
234
235			`elif state == t_State.display_set_addr1:`
236			`tx_byte.next = 00000000;`
237			`if tx_done:`
238			`state.next = t_State.display_char_write1`
239			`pos.next = MEM_LOW1`
240
241			`elif state == t_State.display_char_write1:`
242			`tx_byte.next = ram[pos]`
243			`if tx_done:`
244			`if pos == MEM_HIGH1:`
245			`state.next = t_State.display_set_addr1;`
246			`else:`
247			`pos.next = pos + 1`
248			`elif state == t_State.display_set_addr2:`
249			`tx_byte.next = 11000000;`
250			`if tx_done:`
251			`state.next = t_State.display_char_write2`
252			`pos.next = MEM_LOW2`
253
254			`elif state == t_State.display_char_write2:`
255			`tx_byte.next = ram[pos]`
256			`if tx_done:`
257			`if pos == MEM_HIGH2:`
258			`state.next = t_State.display_done;`
259			`else:`
260			`pos.next = pos + 1`
261
262			`elif state == t_State.display_done:`
263			`tx_byte.next = 00000000;`
264
265			`if repaint:`
266			`state.next = t_State.display_function_set`
267			`else:`
268			`state.next = t_State.display_done`
269
270			`else:`
271
272			`raise ValueError("Undefined Display state")`
273
274
275
276			`@always(clk.posedge, reset.posedge)`
277			`def TxFSM():`
278			`if reset == 1:`
279			`tx_state.next = t_TxState.tx_done`
280			`else:`
281			`if tx_state == t_TxState.tx_high_setup:`
282			`LCD_E0.next = 0`
283			`SF_D0.next = tx_byte[8 : 4]`
284			`tx_delay_load.next = 0`
285			`if delay_done:`
286			`tx_state.next = t_TxState.tx_high_hold`
287			`tx_delay_load.next = 1`
288			`tx_delay_value.next = 12`
289
290			`elif tx_state == t_TxState.tx_high_hold:`
291			`LCD_E0.next = 1`
292			`SF_D0.next = tx_byte[8 : 4]`
293			`tx_delay_load.next = 0`
294			`if delay_done:`
295			`tx_state.next = t_TxState.tx_oneus`
296			`tx_delay_load.next = 1`
297			`tx_delay_value.next = 50`
298
299			`elif tx_state == t_TxState.tx_oneus:`
300			`LCD_E0.next = 0`
301			`tx_delay_load.next = 0`
302			`if delay_done:`
303			`tx_state.next = t_TxState.tx_low_setup`
304			`tx_delay_load.next = 1`
305			`tx_delay_value.next = 2`
306
307			`elif tx_state == t_TxState.tx_low_setup:`
308			`LCD_E0.next = 0`
309			`SF_D0.next = tx_byte[4 : 0]`
310			`tx_delay_load.next = 0`
311			`if delay_done:`
312			`tx_state.next = t_TxState.tx_low_hold`
313			`tx_delay_load.next = 1`
314			`tx_delay_value.next = 12`
315
316			`elif tx_state == t_TxState.tx_low_hold:`
317			`LCD_E0.next = 1`
318			`SF_D0.next = tx_byte[4 : 0]`
319			`tx_delay_load.next = 0`
320			`if delay_done:`
321			`tx_state.next = t_TxState.tx_fortyus`
322			`tx_delay_load.next = 1`
323			`tx_delay_value.next = 2000`
324
325			`elif tx_state == t_TxState.tx_fortyus:`
326			`LCD_E0.next = 0`
327			`tx_delay_load.next = 0`
328			`if delay_done:`
329			`tx_state.next = t_TxState.tx_done`
330			`tx_done.next = 1`
331
332			`elif tx_state == t_TxState.tx_done:`
333			`LCD_E0.next = 0`
334			`tx_done.next = 0`
335			`tx_delay_load.next = 0`
336			`if tx_init:`
337			`tx_state.next = t_TxState.tx_high_setup`
338			`tx_delay_load.next = 1`
339			`tx_delay_value.next = 2`
340			`else:`
341			`raise ValueError("Undefined TX state")`
342
343			`return instances()`
344
345			`def main():`
346			`width = 20`
347
348			`count = Signal(intbv(0)[width:0])`
349			`clk, reset, we, repaint, busy, LCD_E, LCD_RS, LCD_RW = [Signal(bool(0)) for i in range(8)]`
350			`dat = Signal(intbv(0)[32:0])`
351			`addr = Signal(intbv(0)[7:0])`
352			`SF_D = Signal(intbv(0)[4:0])`
353
354			`toVerilog(lcd,clk, reset, dat, addr, we, repaint, busy, SF_D, LCD_E, LCD_RS, LCD_RW)`
355			`# toVHDL(delayCounter, clk, reset, count, load, done, width)`
356			`if __name__ == '__main__':`
357			`main()`
358