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c200v1/e200v1: Add battery charging. This should be usable on v2 players but those should be evaluated for current, endpoint voltage and whether or not accurate battery readings may always be obtained (which determines algorithm setup and behavior).

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19748 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2009-01-11 10:07:22 +00:00
parent b84fe020a5
commit 7d7969114d
11 changed files with 378 additions and 52 deletions
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13
firmware/target/arm/sandisk/sansa-c200/powermgmt-c200.c
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@ -38,8 +38,8 @@ const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
/* NOTE: why is the top voltage 4237? That's just too high. */
{ 3286, 3679, 3734, 3764, 3788, 3824, 3886, 3950, 4014, 4098, 4237 },
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
@ -48,14 +48,3 @@ const unsigned short percent_to_volt_charge[11] =
/* Sansa c200 has a 530 mAh LiPo battery */
3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200
};
/* ADC should read 0x3ff=5.12V */
#define BATTERY_SCALE_FACTOR 5125
/* full-scale ADC readout (2^10) in millivolt */
/* Returns battery voltage from ADC [millivolts] */
unsigned int battery_adc_voltage(void)
{
return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
}