diff options
Diffstat (limited to 'firmware/target/arm/adc-as3514.c')
-rw-r--r-- | firmware/target/arm/adc-as3514.c | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/firmware/target/arm/adc-as3514.c b/firmware/target/arm/adc-as3514.c deleted file mode 100644 index 8c661eb133..0000000000 --- a/firmware/target/arm/adc-as3514.c +++ /dev/null | |||
@@ -1,67 +0,0 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2006 by Barry Wardell | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #include "adc.h" | ||
22 | #include "kernel.h" | ||
23 | #include "ascodec.h" | ||
24 | #include "as3514.h" | ||
25 | |||
26 | /* Read 10-bit channel data */ | ||
27 | unsigned short adc_read(int channel) | ||
28 | { | ||
29 | unsigned short data = 0; | ||
30 | |||
31 | if ((unsigned)channel >= NUM_ADC_CHANNELS) | ||
32 | return 0; | ||
33 | |||
34 | ascodec_lock(); | ||
35 | |||
36 | /* Select channel */ | ||
37 | if (ascodec_write(AS3514_ADC_0, (channel << 4)) >= 0) | ||
38 | { | ||
39 | unsigned char buf[2]; | ||
40 | |||
41 | /* | ||
42 | * The AS3514 ADC will trigger an interrupt when the conversion | ||
43 | * is finished, if the corresponding enable bit in IRQ_ENRD2 | ||
44 | * is set. | ||
45 | * Previously the code did not wait and this apparently did | ||
46 | * not pose any problems, but this should be more correct. | ||
47 | * Without the wait the data read back may be completely or | ||
48 | * partially (first one of the two bytes) stale. | ||
49 | */ | ||
50 | ascodec_wait_adc_finished(); | ||
51 | |||
52 | |||
53 | /* Read data */ | ||
54 | if (ascodec_readbytes(AS3514_ADC_0, 2, buf) >= 0) | ||
55 | { | ||
56 | data = (((buf[0] & 0x3) << 8) | buf[1]); | ||
57 | } | ||
58 | } | ||
59 | |||
60 | ascodec_unlock(); | ||
61 | |||
62 | return data; | ||
63 | } | ||
64 | |||
65 | void adc_init(void) | ||
66 | { | ||
67 | } | ||