FreeCalypso > hg > freecalypso-hwlab

annotate lcdtest/busops.c @ 56:d4357e6d6679

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
checking in some Calypso JTAG experiments
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 12 May 2019 04:11:30 +0000
parents 4b7cac119fb5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 #include <sys/types.h>
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 #include <stdio.h>
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 #include <stdlib.h>
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 #include <unistd.h>
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <ftdi.h>
27
4b7cac119fb5 lcdtest: added our own local exitcodes.h header
Mychaela Falconia <falcon@freecalypso.org>
parents: 14
diff changeset
6 #include "exitcodes.h"
12
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 extern struct ftdi_context ftdi;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 do_ftdi_write(cmd, cmdlen)
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 u_char *cmd;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 {
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 if (ftdi_write_data(&ftdi, cmd, cmdlen) != cmdlen) {
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 fprintf(stderr, "FTDI write error: %s\n", ftdi.error_str);
27
4b7cac119fb5 lcdtest: added our own local exitcodes.h header
Mychaela Falconia <falcon@freecalypso.org>
parents: 14
diff changeset
15 exit(ERROR_FTDI);
12
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 }
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 }
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 set_gpio_pins(rs, reset)
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 {
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 u_char cmd[3];
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 cmd[0] = 0x82;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 cmd[1] = (rs ? 1 : 0) | (reset ? 2 : 0);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 cmd[2] = 0x03;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 do_ftdi_write(cmd, 3);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 }
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 reset_pulse()
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 {
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 set_gpio_pins(0, 0);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 usleep(50000);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 set_gpio_pins(0, 1);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 return(0);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 }
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 write_ir(val16)
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 unsigned val16;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 {
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 u_char cmd[9];
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 /* set RS low */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 cmd[0] = 0x82;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 cmd[1] = 0x02;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 cmd[2] = 0x03;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 /* write upper byte */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 cmd[3] = 0x92;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 cmd[4] = 0; /* dummy addr */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 cmd[5] = val16 >> 8;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 /* write lower byte */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 cmd[6] = 0x92;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 cmd[7] = 0; /* dummy addr */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 cmd[8] = val16;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 do_ftdi_write(cmd, 9);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 }
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 write_dr(val16)
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 unsigned val16;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 {
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 u_char cmd[9];
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 /* set RS high */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 cmd[0] = 0x82;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 cmd[1] = 0x03;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 cmd[2] = 0x03;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 /* write upper byte */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 cmd[3] = 0x92;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 cmd[4] = 0; /* dummy addr */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 cmd[5] = val16 >> 8;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 /* write lower byte */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 cmd[6] = 0x92;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 cmd[7] = 0; /* dummy addr */
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 cmd[8] = val16;
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 do_ftdi_write(cmd, 9);
5eaf832d57d0 lcdtest program started, skeleton compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 }