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author | Jens Arnold <amiconn@rockbox.org> | 2007-03-05 00:04:00 +0000 |
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committer | Jens Arnold <amiconn@rockbox.org> | 2007-03-05 00:04:00 +0000 |
commit | 8876018d25c6a56cce118482c1372bbff344cb23 (patch) | |
tree | a66dca10bf92674c655b9862fd366ecc77bba76a /firmware/target/coldfire/iaudio/adc-iaudio.c | |
parent | ee07215d506def8d3483f4adf6e1d4ae51c10c52 (diff) | |
download | rockbox-8876018d25c6a56cce118482c1372bbff344cb23.tar.gz rockbox-8876018d25c6a56cce118482c1372bbff344cb23.zip |
Bring up the M5 port to a working stage: Extended numerous explicit checks for IAUDIO_X5 to also check for IAUDIO_M5, moved code around the target tree, added preliminary background for the sim.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12610 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/coldfire/iaudio/adc-iaudio.c')
-rw-r--r-- | firmware/target/coldfire/iaudio/adc-iaudio.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/firmware/target/coldfire/iaudio/adc-iaudio.c b/firmware/target/coldfire/iaudio/adc-iaudio.c new file mode 100644 index 0000000000..1895cacfe9 --- /dev/null +++ b/firmware/target/coldfire/iaudio/adc-iaudio.c | |||
@@ -0,0 +1,58 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2006 by Linus Nielsen Feltzing | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | #include "config.h" | ||
20 | #include "cpu.h" | ||
21 | #include "system.h" | ||
22 | #include "kernel.h" | ||
23 | #include "thread.h" | ||
24 | #include "adc.h" | ||
25 | #include "pcf50606.h" | ||
26 | |||
27 | /* get remaining 2 bits and return 10 bit value */ | ||
28 | static int get_10bit_voltage(int msbdata) | ||
29 | { | ||
30 | int data = msbdata << 2; | ||
31 | data |= pcf50606_read(0x31) & 0x3; | ||
32 | return data; | ||
33 | } | ||
34 | |||
35 | unsigned short adc_scan(int channel) | ||
36 | { | ||
37 | static const int adcc2_parms[] = | ||
38 | { | ||
39 | [ADC_BUTTONS] = 0x81 | (5 << 1), /* 8b - ADCIN2 */ | ||
40 | [ADC_REMOTE] = 0x81 | (6 << 1), /* 8b - ADCIN3 */ | ||
41 | [ADC_BATTERY] = 0x01 | (0 << 1), /* 10b - BATVOLT, resistive divider */ | ||
42 | }; | ||
43 | |||
44 | int level; | ||
45 | int data; | ||
46 | |||
47 | level = set_irq_level(HIGHEST_IRQ_LEVEL); | ||
48 | |||
49 | pcf50606_write(0x2f, adcc2_parms[channel]); | ||
50 | data = pcf50606_read(0x30); | ||
51 | |||
52 | if (channel == ADC_BATTERY) | ||
53 | data = get_10bit_voltage(data); | ||
54 | |||
55 | set_irq_level(level); | ||
56 | |||
57 | return (unsigned short)data; | ||
58 | } | ||