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[FIX] matrix lcd

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This commit is contained in:
Sem van der Hoeven
2021-03-31 16:14:19 +02:00
parent a448a04a64
commit 25db0b03f0
8 changed files with 209 additions and 146 deletions
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BIN
Microcontrollers/.vs/Microcontrollers/v14/.atsuo
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Microcontrollers/LCDMatrix/Debug/LCDMatrix.elf
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20
Microcontrollers/LCDMatrix/Debug/LCDMatrix.hex
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@@ -7,17 +7,19 @@
:100060001DC000001BC0000019C0000017C0000028
:1000700015C0000013C0000011C000000FC0000038
:100080000DC000000BC0000009C0000011241FBEFD
:10009000CFEFD0E1DEBFCDBF2DD05CC0B1CF10928D
:10009000CFEFD0E1DEBFCDBF41D06EC0B1CF109267
:1000A000710080E280937000089584EA8093740068
:1000B000809174008823E4F7089584E980937400A4
:1000C00008958093730084E8809374008091740095
:1000D0008823E4F7089520E030E008C0E9EFF0E07D
:1000D0008823E4F7089520E030E008C0E3ECF9E07D
:1000E0003197F1F700C000002F5F3F4F2817390705
:1000F000ACF30895D4DFD9DF80EEE3DF81E2E1DF06
:10010000DCDFD3DF80EEDDDF80EADBDFD6DFCDDFD3
:1001100080EED7DF83EED5DFD0DFC7DF80EED1DF23
:1001200081E8CFDFCADFC1DF80EECBDF80E0C9DF4F
:1001300080E0C7DFC2DF84EF91E0CDDFB6DF80EE85
:10014000C0DF80E0BEDF81E0BCDFB7DF84EF91E09D
:08015000C2DFE9CFF894FFCFF4
:1000F000ACF30895CF93DF93D8DF80EEE2DF80E0AA
:10010000E0DFC0E0D0E003C080E0DBDF2196C0315B
:10011000D105D4F3D2DFDF91CF910895C0DFC5DFE1
:1001200080EECFDF81E2CDDFC8DFBFDF80EEC9DF49
:1001300080EAC7DFC2DFB9DF80EEC3DF83EEC1DF55
:10014000BCDFB3DF80EEBDDF81E8BBDFB6DFD2DF2F
:10015000C0E0D0E00CC0A9DF80EEB3DF8C2FB1DFB0
:100160008FEFAFDFAADF88EC90E0B5DF2296C031D9
:0C017000D1058CF3BFDFECCFF894FFCF7B
:00000001FF

210
Microcontrollers/LCDMatrix/Debug/LCDMatrix.lss
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@@ -3,29 +3,29 @@ LCDMatrix.elf: file format elf32-avr
Sections:
Idx Name Size VMA LMA File off Algn
0 .data 00000000 00800100 00800100 000001ac 2**0
0 .data 00000000 00800100 00800100 000001d0 2**0
CONTENTS, ALLOC, LOAD, DATA
1 .text 00000158 00000000 00000000 00000054 2**1
1 .text 0000017c 00000000 00000000 00000054 2**1
CONTENTS, ALLOC, LOAD, READONLY, CODE
2 .comment 00000030 00000000 00000000 000001ac 2**0
2 .comment 00000030 00000000 00000000 000001d0 2**0
CONTENTS, READONLY
3 .note.gnu.avr.deviceinfo 0000003c 00000000 00000000 000001dc 2**2
3 .note.gnu.avr.deviceinfo 0000003c 00000000 00000000 00000200 2**2
CONTENTS, READONLY
4 .debug_aranges 00000048 00000000 00000000 00000218 2**0
4 .debug_aranges 00000050 00000000 00000000 0000023c 2**0
CONTENTS, READONLY, DEBUGGING
5 .debug_info 00000af1 00000000 00000000 00000260 2**0
5 .debug_info 00000b36 00000000 00000000 0000028c 2**0
CONTENTS, READONLY, DEBUGGING
6 .debug_abbrev 00000862 00000000 00000000 00000d51 2**0
6 .debug_abbrev 00000885 00000000 00000000 00000dc2 2**0
CONTENTS, READONLY, DEBUGGING
7 .debug_line 0000040a 00000000 00000000 000015b3 2**0
7 .debug_line 00000451 00000000 00000000 00001647 2**0
CONTENTS, READONLY, DEBUGGING
8 .debug_frame 00000074 00000000 00000000 000019c0 2**2
8 .debug_frame 00000090 00000000 00000000 00001a98 2**2
CONTENTS, READONLY, DEBUGGING
9 .debug_str 00000441 00000000 00000000 00001a34 2**0
9 .debug_str 0000044e 00000000 00000000 00001b28 2**0
CONTENTS, READONLY, DEBUGGING
10 .debug_loc 00000097 00000000 00000000 00001e75 2**0
10 .debug_loc 0000010e 00000000 00000000 00001f76 2**0
CONTENTS, READONLY, DEBUGGING
11 .debug_ranges 00000038 00000000 00000000 00001f0c 2**0
11 .debug_ranges 00000040 00000000 00000000 00002084 2**0
CONTENTS, READONLY, DEBUGGING
Disassembly of section .text:
@@ -109,8 +109,8 @@ Disassembly of section .text:
92: d0 e1 ldi r29, 0x10 ; 16
94: de bf out 0x3e, r29 ; 62
96: cd bf out 0x3d, r28 ; 61
98: 2d d0 rcall .+90 ; 0xf4 <main>
9a: 5c c0 rjmp .+184 ; 0x154 <_exit>
98: 41 d0 rcall .+130 ; 0x11c <main>
9a: 6e c0 rjmp .+220 ; 0x178 <_exit>
0000009c <__bad_interrupt>:
9c: b1 cf rjmp .-158 ; 0x0 <__vectors>
@@ -189,8 +189,8 @@ Version : DMK, Initial code
#endif
__builtin_avr_delay_cycles(__ticks_dc);
dc: e9 ef ldi r30, 0xF9 ; 249
de: f0 e0 ldi r31, 0x00 ; 0
dc: e3 ec ldi r30, 0xC3 ; 195
de: f9 e0 ldi r31, 0x09 ; 9
e0: 31 97 sbiw r30, 0x01 ; 1
e2: f1 f7 brne .-4 ; 0xe0 <wait+0xa>
e4: 00 c0 rjmp .+0 ; 0xe6 <wait+0x10>
@@ -206,101 +206,143 @@ Version : DMK, Initial code
}
f2: 08 95 ret
000000f4 <main>:
notes: Looping forever, trashing the HT16K33
Version : DMK, Initial code
*******************************************************************/
000000f4 <matrix_clear>:
void matrix_clear()
{
f4: cf 93 push r28
f6: df 93 push r29
twi_start();
f8: d8 df rcall .-80 ; 0xaa <twi_start>
twi_tx(0xE0);
fa: 80 ee ldi r24, 0xE0 ; 224
fc: e2 df rcall .-60 ; 0xc2 <twi_tx>
twi_tx(0x00);
fe: 80 e0 ldi r24, 0x00 ; 0
100: e0 df rcall .-64 ; 0xc2 <twi_tx>
102: c0 e0 ldi r28, 0x00 ; 0
for (int i = 0; i < 16; i++)
104: d0 e0 ldi r29, 0x00 ; 0
106: 03 c0 rjmp .+6 ; 0x10e <matrix_clear+0x1a>
{
twi_tx(0x00);
108: 80 e0 ldi r24, 0x00 ; 0
10a: db df rcall .-74 ; 0xc2 <twi_tx>
10c: 21 96 adiw r28, 0x01 ; 1
void matrix_clear()
{
twi_start();
twi_tx(0xE0);
twi_tx(0x00);
for (int i = 0; i < 16; i++)
10e: c0 31 cpi r28, 0x10 ; 16
110: d1 05 cpc r29, r1
112: d4 f3 brlt .-12 ; 0x108 <matrix_clear+0x14>
{
twi_tx(0x00);
}
twi_stop();
114: d2 df rcall .-92 ; 0xba <twi_stop>
116: df 91 pop r29
}
118: cf 91 pop r28
11a: 08 95 ret
0000011c <main>:
11c: c0 df rcall .-128 ; 0x9e <twi_init>
{
twi_init(); // Init TWI interface
f4: d4 df rcall .-88 ; 0x9e <twi_init>
// Init HT16K22. Page 32 datasheet
twi_start();
f6: d9 df rcall .-78 ; 0xaa <twi_start>
11e: c5 df rcall .-118 ; 0xaa <twi_start>
twi_tx(0xE0); // Display I2C addres + R/W bit
f8: 80 ee ldi r24, 0xE0 ; 224
fa: e3 df rcall .-58 ; 0xc2 <twi_tx>
120: 80 ee ldi r24, 0xE0 ; 224
122: cf df rcall .-98 ; 0xc2 <twi_tx>
twi_tx(0x21); // Internal osc on (page 10 HT16K33)
fc: 81 e2 ldi r24, 0x21 ; 33
fe: e1 df rcall .-62 ; 0xc2 <twi_tx>
124: 81 e2 ldi r24, 0x21 ; 33
126: cd df rcall .-102 ; 0xc2 <twi_tx>
twi_stop();
100: dc df rcall .-72 ; 0xba <twi_stop>
128: c8 df rcall .-112 ; 0xba <twi_stop>
twi_start();
102: d3 df rcall .-90 ; 0xaa <twi_start>
12a: bf df rcall .-130 ; 0xaa <twi_start>
twi_tx(0xE0); // Display I2C address + R/W bit
104: 80 ee ldi r24, 0xE0 ; 224
106: dd df rcall .-70 ; 0xc2 <twi_tx>
12c: 80 ee ldi r24, 0xE0 ; 224
12e: c9 df rcall .-110 ; 0xc2 <twi_tx>
twi_tx(0xA0); // HT16K33 pins all output
108: 80 ea ldi r24, 0xA0 ; 160
130: 80 ea ldi r24, 0xA0 ; 160
twi_stop();
10a: db df rcall .-74 ; 0xc2 <twi_tx>
132: c7 df rcall .-114 ; 0xc2 <twi_tx>
twi_start();
10c: d6 df rcall .-84 ; 0xba <twi_stop>
134: c2 df rcall .-124 ; 0xba <twi_stop>
twi_tx(0xE0); // Display I2C address + R/W bit
10e: cd df rcall .-102 ; 0xaa <twi_start>
136: b9 df rcall .-142 ; 0xaa <twi_start>
twi_tx(0xE3); // Display Dimming 4/16 duty cycle
110: 80 ee ldi r24, 0xE0 ; 224
112: d7 df rcall .-82 ; 0xc2 <twi_tx>
138: 80 ee ldi r24, 0xE0 ; 224
13a: c3 df rcall .-122 ; 0xc2 <twi_tx>
twi_stop();
114: 83 ee ldi r24, 0xE3 ; 227
13c: 83 ee ldi r24, 0xE3 ; 227
twi_start();
116: d5 df rcall .-86 ; 0xc2 <twi_tx>
13e: c1 df rcall .-126 ; 0xc2 <twi_tx>
twi_tx(0xE0); // Display I2C address + R/W bit
118: d0 df rcall .-96 ; 0xba <twi_stop>
11a: c7 df rcall .-114 ; 0xaa <twi_start>
140: bc df rcall .-136 ; 0xba <twi_stop>
142: b3 df rcall .-154 ; 0xaa <twi_start>
twi_tx(0x81); // Display OFF - Blink On
11c: 80 ee ldi r24, 0xE0 ; 224
11e: d1 df rcall .-94 ; 0xc2 <twi_tx>
144: 80 ee ldi r24, 0xE0 ; 224
146: bd df rcall .-134 ; 0xc2 <twi_tx>
twi_stop();
120: 81 e8 ldi r24, 0x81 ; 129
148: 81 e8 ldi r24, 0x81 ; 129
14a: bb df rcall .-138 ; 0xc2 <twi_tx>
matrix_clear();
14c: b6 df rcall .-148 ; 0xba <twi_stop>
14e: d2 df rcall .-92 ; 0xf4 <matrix_clear>
while (1)
{
twi_start();
122: cf df rcall .-98 ; 0xc2 <twi_tx>
twi_tx(0xE0); // Display I2C addres + R/W bit
124: ca df rcall .-108 ; 0xba <twi_stop>
126: c1 df rcall .-126 ; 0xaa <twi_start>
twi_tx(0x00); // Address
128: 80 ee ldi r24, 0xE0 ; 224
12a: cb df rcall .-106 ; 0xc2 <twi_tx>
12c: 80 e0 ldi r24, 0x00 ; 0
twi_tx(0x00); // data
12e: c9 df rcall .-110 ; 0xc2 <twi_tx>
130: 80 e0 ldi r24, 0x00 ; 0
132: c7 df rcall .-114 ; 0xc2 <twi_tx>
twi_stop();
134: c2 df rcall .-124 ; 0xba <twi_stop>
136: 84 ef ldi r24, 0xF4 ; 244
for (int i = 0; i < 16; i += 2)
150: c0 e0 ldi r28, 0x00 ; 0
152: d0 e0 ldi r29, 0x00 ; 0
{
twi_start();
154: 0c c0 rjmp .+24 ; 0x16e <main+0x52>
156: a9 df rcall .-174 ; 0xaa <twi_start>
twi_tx(0xE0);
158: 80 ee ldi r24, 0xE0 ; 224
15a: b3 df rcall .-154 ; 0xc2 <twi_tx>
15c: 8c 2f mov r24, r28
twi_tx((char)i);
15e: b1 df rcall .-158 ; 0xc2 <twi_tx>
160: 8f ef ldi r24, 0xFF ; 255
162: af df rcall .-162 ; 0xc2 <twi_tx>
twi_tx(0xFF);
164: aa df rcall .-172 ; 0xba <twi_stop>
166: 88 ec ldi r24, 0xC8 ; 200
168: 90 e0 ldi r25, 0x00 ; 0
twi_stop();
16a: b5 df rcall .-150 ; 0xd6 <wait>
16c: 22 96 adiw r28, 0x02 ; 2
wait(200);
16e: c0 31 cpi r28, 0x10 ; 16
170: d1 05 cpc r29, r1
172: 8c f3 brlt .-30 ; 0x156 <main+0x3a>
174: bf df rcall .-130 ; 0xf4 <matrix_clear>
twi_stop();
wait(500);
138: 91 e0 ldi r25, 0x01 ; 1
13a: cd df rcall .-102 ; 0xd6 <wait>
13c: b6 df rcall .-148 ; 0xaa <twi_start>
13e: 80 ee ldi r24, 0xE0 ; 224
matrix_clear();
while (1)
{
for (int i = 0; i < 16; i += 2)
176: ec cf rjmp .-40 ; 0x150 <main+0x34>
twi_start();
140: c0 df rcall .-128 ; 0xc2 <twi_tx>
142: 80 e0 ldi r24, 0x00 ; 0
twi_tx(0xE0); // Display I2C addres + R/W bit
144: be df rcall .-132 ; 0xc2 <twi_tx>
146: 81 e0 ldi r24, 0x01 ; 1
148: bc df rcall .-136 ; 0xc2 <twi_tx>
twi_tx(0x00); // Address
14a: b7 df rcall .-146 ; 0xba <twi_stop>
14c: 84 ef ldi r24, 0xF4 ; 244
14e: 91 e0 ldi r25, 0x01 ; 1
twi_tx(0x01); // data
150: c2 df rcall .-124 ; 0xd6 <wait>
152: e9 cf rjmp .-46 ; 0x126 <main+0x32>
00000178 <_exit>:
178: f8 94 cli
00000154 <_exit>:
154: f8 94 cli
00000156 <__stop_program>:
twi_stop();
156: ff cf rjmp .-2 ; 0x156 <__stop_program>
0000017a <__stop_program>:
17a: ff cf rjmp .-2 ; 0x17a <__stop_program>

61
Microcontrollers/LCDMatrix/Debug/LCDMatrix.map
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@@ -153,7 +153,7 @@ END GROUP
.rela.plt
*(.rela.plt)
.text 0x00000000 0x158
.text 0x00000000 0x17c
*(.vectors)
.vectors 0x00000000 0x8c C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.6.364/gcc/dev/atmega128/avr51/crtatmega128.o
0x00000000 __vector_default
@@ -258,13 +258,16 @@ END GROUP
0x000000c2 twi_tx
.text.wait 0x000000d6 0x1e main.o
0x000000d6 wait
.text.main 0x000000f4 0x60 main.o
0x000000f4 main
0x00000154 . = ALIGN (0x2)
.text.matrix_clear
0x000000f4 0x28 main.o
0x000000f4 matrix_clear
.text.main 0x0000011c 0x5c main.o
0x0000011c main
0x00000178 . = ALIGN (0x2)
*(.fini9)
.fini9 0x00000154 0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr51\libgcc.a(_exit.o)
0x00000154 _exit
0x00000154 exit
.fini9 0x00000178 0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr51\libgcc.a(_exit.o)
0x00000178 _exit
0x00000178 exit
*(.fini9)
*(.fini8)
*(.fini8)
@@ -283,11 +286,11 @@ END GROUP
*(.fini1)
*(.fini1)
*(.fini0)
.fini0 0x00000154 0x4 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr51\libgcc.a(_exit.o)
.fini0 0x00000178 0x4 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr51\libgcc.a(_exit.o)
*(.fini0)
0x00000158 _etext = .
0x0000017c _etext = .
.data 0x00800100 0x0 load address 0x00000158
.data 0x00800100 0x0 load address 0x0000017c
[!provide] PROVIDE (__data_start, .)
*(.data)
*(.data*)
@@ -305,8 +308,8 @@ END GROUP
*(.bss*)
*(COMMON)
[!provide] PROVIDE (__bss_end, .)
0x00000158 __data_load_start = LOADADDR (.data)
0x00000158 __data_load_end = (__data_load_start + SIZEOF (.data))
0x0000017c __data_load_start = LOADADDR (.data)
0x0000017c __data_load_end = (__data_load_start + SIZEOF (.data))
.noinit 0x00800100 0x0
[!provide] PROVIDE (__noinit_start, .)
@@ -377,42 +380,42 @@ END GROUP
.debug_sfnames
*(.debug_sfnames)
.debug_aranges 0x00000000 0x48
.debug_aranges 0x00000000 0x50
*(.debug_aranges)
.debug_aranges
0x00000000 0x48 main.o
0x00000000 0x50 main.o
.debug_pubnames
*(.debug_pubnames)
.debug_info 0x00000000 0xaf1
.debug_info 0x00000000 0xb36
*(.debug_info .gnu.linkonce.wi.*)
.debug_info 0x00000000 0x780 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.6.364/gcc/dev/atmega128/avr51/crtatmega128.o
.debug_info 0x00000780 0x371 main.o
.debug_info 0x00000780 0x3b6 main.o
.debug_abbrev 0x00000000 0x862
.debug_abbrev 0x00000000 0x885
*(.debug_abbrev)
.debug_abbrev 0x00000000 0x718 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.6.364/gcc/dev/atmega128/avr51/crtatmega128.o
.debug_abbrev 0x00000718 0x14a main.o
.debug_abbrev 0x00000718 0x16d main.o
.debug_line 0x00000000 0x40a
.debug_line 0x00000000 0x451
*(.debug_line .debug_line.* .debug_line_end)
.debug_line 0x00000000 0x16a C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.6.364/gcc/dev/atmega128/avr51/crtatmega128.o
.debug_line 0x0000016a 0x2a0 main.o
.debug_line 0x0000016a 0x2e7 main.o
.debug_frame 0x00000000 0x74
.debug_frame 0x00000000 0x90
*(.debug_frame)
.debug_frame 0x00000000 0x74 main.o
.debug_frame 0x00000000 0x90 main.o
.debug_str 0x00000000 0x441
.debug_str 0x00000000 0x44e
*(.debug_str)
.debug_str 0x00000000 0x27d C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.6.364/gcc/dev/atmega128/avr51/crtatmega128.o
.debug_str 0x0000027d 0x1c4 main.o
0x1f8 (size before relaxing)
.debug_str 0x0000027d 0x1d1 main.o
0x205 (size before relaxing)
.debug_loc 0x00000000 0x97
.debug_loc 0x00000000 0x10e
*(.debug_loc)
.debug_loc 0x00000000 0x97 main.o
.debug_loc 0x00000000 0x10e main.o
.debug_macinfo
*(.debug_macinfo)
@@ -432,9 +435,9 @@ END GROUP
.debug_pubtypes
*(.debug_pubtypes)
.debug_ranges 0x00000000 0x38
.debug_ranges 0x00000000 0x40
*(.debug_ranges)
.debug_ranges 0x00000000 0x38 main.o
.debug_ranges 0x00000000 0x40 main.o
.debug_macro
*(.debug_macro)

20
Microcontrollers/LCDMatrix/Debug/LCDMatrix.srec
View File

@@ -8,17 +8,19 @@ S113005025C0000023C0000021C000001FC0000014
S11300601DC000001BC0000019C0000017C0000024
S113007015C0000013C0000011C000000FC0000034
S11300800DC000000BC0000009C0000011241FBEF9
S1130090CFEFD0E1DEBFCDBF2DD05CC0B1CF109289
S1130090CFEFD0E1DEBFCDBF41D06EC0B1CF109263
S11300A0710080E280937000089584EA8093740064
S11300B0809174008823E4F7089584E980937400A0
S11300C008958093730084E8809374008091740091
S11300D08823E4F7089520E030E008C0E9EFF0E079
S11300D08823E4F7089520E030E008C0E3ECF9E079
S11300E03197F1F700C000002F5F3F4F2817390701
S11300F0ACF30895D4DFD9DF80EEE3DF81E2E1DF02
S1130100DCDFD3DF80EEDDDF80EADBDFD6DFCDDFCF
S113011080EED7DF83EED5DFD0DFC7DF80EED1DF1F
S113012081E8CFDFCADFC1DF80EECBDF80E0C9DF4B
S113013080E0C7DFC2DF84EF91E0CDDFB6DF80EE81
S1130140C0DF80E0BEDF81E0BCDFB7DF84EF91E099
S10B0150C2DFE9CFF894FFCFF0
S11300F0ACF30895CF93DF93D8DF80EEE2DF80E0A6
S1130100E0DFC0E0D0E003C080E0DBDF2196C03157
S1130110D105D4F3D2DFDF91CF910895C0DFC5DFDD
S113012080EECFDF81E2CDDFC8DFBFDF80EEC9DF45
S113013080EAC7DFC2DFB9DF80EEC3DF83EEC1DF51
S1130140BCDFB3DF80EEBDDF81E8BBDFB6DFD2DF2B
S1130150C0E0D0E00CC0A9DF80EEB3DF8C2FB1DFAC
S11301608FEFAFDFAADF88EC90E0B5DF2296C031D5
S10F0170D1058CF3BFDFECCFF894FFCF77
S9030000FC

BIN
Microcontrollers/LCDMatrix/Debug/main.o
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Binary file not shown.

44
Microcontrollers/LCDMatrix/main.c
View File

@@ -14,6 +14,7 @@
** Author: dkroeske@gmail.com
** -------------------------------------------------------------------------*/
#define F_CPU 10e6
#include <avr/io.h>
#include <util/delay.h>
@@ -92,6 +93,21 @@ Version : DMK, Initial code
}
}
void matrix_clear()
{
twi_start();
twi_tx(0xE0);
twi_tx(0x00);
for (int i = 0; i < 16; i++)
{
twi_tx(0x00);
}
twi_stop();
}
void turn_on_set_led()
/******************************************************************/
int main( void )
/*
@@ -126,23 +142,21 @@ Version : DMK, Initial code
twi_tx(0x81); // Display OFF - Blink On
twi_stop();
matrix_clear();
while (1)
{
twi_start();
twi_tx(0xE0); // Display I2C addres + R/W bit
twi_tx(0x00); // Address
twi_tx(0x00); // data
twi_stop();
wait(500);
twi_start();
twi_tx(0xE0); // Display I2C addres + R/W bit
twi_tx(0x00); // Address
twi_tx(0x01); // data
twi_stop();
wait(500);
for (int i = 0; i < 16; i += 2)
{
twi_start();
twi_tx(0xE0);
twi_tx((char)i);
twi_tx(0xFF);
twi_stop();
wait(200);
}
matrix_clear();
}
return 1;