devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Use an 8 bit ADC read for battery reading on ipod, that provides better than centivolt precision any way, also enable charging, it seems to detect fine when charging by USB

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8966 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Brandon Low 2006-03-09 01:36:22 +00:00
parent c24569feee
commit ca9e8b6cf5
3 changed files with 9 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

9
firmware/drivers/adc.c
View file

@ -298,12 +298,17 @@ static struct adc_struct adcdata[NUM_ADC_CHANNELS] IDATA_ATTR;
* a 13 bit value corresponding to 0-5.4v, the resulting range is 13FB-17FA,
* representing 3.1-5.4v */
static unsigned short ten_bit_subtractor(unsigned short data) {
return (data<<2)+0x13FB;
return (data<<2)+0x4FB;
}
static unsigned short _adc_scan(struct adc_struct *adc)
{
unsigned short data = pcf50605_a2d_read(adc->channelnum);
unsigned short data;
/* ADCC1, 8 bit, start */
pcf50605_write(0x2f, 0x80 | (adc->channelnum << 1) | 0x1);
data = pcf50605_read(0x30); /* ADCS1 */
if (adc->conversion) {
data = adc->conversion(data);
}

12
firmware/drivers/pcf50605.c
View file

@ -98,18 +98,6 @@ int pcf50605_write_multiple(int address, const unsigned char* buf, int count)
return 0;
}
unsigned short pcf50605_a2d_read(int adc_input)
{
unsigned short hi;
unsigned char lo;
ipod_i2c_send(0x8, 0x2f, (adc_input<<1) | 0x1); /* ADCC2, ADCMUX = adc_input, ADCSTART = 1 */
hi = i2c_readbyte(0x8, 0x30); /* ADCS1 */
lo = (i2c_readbyte(0x8, 0x31) & 0x3); /* ADCS2 */
return (hi << 2) | lo;
}
/* The following command puts the iPod into a deep sleep. Warning
from the good people of ipodlinux - never issue this command
without setting CHGWAK or EXTONWAK if you ever want to be able to

4
firmware/export/config-ipodvideo.h
View file

@ -61,10 +61,10 @@
/* Type of mobile power */
#define CONFIG_BATTERY BATT_LIPOL1300
#define BATTERY_SCALE_FACTOR 586 /* FIX: this value is picked at random */
#define BATTERY_SCALE_FACTOR 2353
/* Define this if the platform can charge batteries */
//#define HAVE_CHARGING 1
#define HAVE_CHARGING 1
/* define this if the hardware can be powered off while charging */
//#define HAVE_POWEROFF_WHILE_CHARGING