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M:Robe 500 Power: Update battery Curve and simplify calculations.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25715 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun 2010-04-25 16:11:49 +00:00
parent 967e16f7c9
commit b15b7fac7e
1 changed files with 19 additions and 12 deletions
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31
firmware/target/arm/tms320dm320/mrobe-500/powermgmt-mr500.c
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@ -25,17 +25,20 @@
#include "tsc2100.h"
#include "kernel.h"
unsigned short current_bat2 = 4200;
unsigned short current_aux = 4200;
static unsigned short current_voltage = 4200;
unsigned short current_bat2 = 4100;
unsigned short current_aux = 4100;
static unsigned short current_voltage = 4100;
/* This specifies the battery level that writes are still safe */
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
3450
3600
};
/* Below this the player cannot be considered to operate reliably */
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
3400
3580
};
/* Right now these are linear translations, it would be good to model them
@ -47,7 +50,7 @@ const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
{ 3400, 3300, 3600, 3700, 3800, 3900, 4000, 4100, 4200, 4300, 4400 },
{ 3600, 3650, 3700, 3750, 3800, 3850, 3900, 3950, 4000, 4090, 4150 },
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
@ -63,12 +66,6 @@ unsigned int battery_adc_voltage(void)
static unsigned last_tick = 0;
short tsadc;
if(tsc2100_read_volt(&bat1, &bat2, &aux)){
current_voltage=((short)((int)(bat1<<10)/4096*6*2.5));
current_bat2=((short)((int)(bat2<<10)/4096*6*2.5));
current_aux=((short)((int)(aux<<10)/4096*6*2.5));
}
tsadc=tsc2100_readreg(TSADC_PAGE, TSADC_ADDRESS);
/* Set the TSC2100 to read voltages if not busy with pen */
@ -78,6 +75,16 @@ unsigned int battery_adc_voltage(void)
last_tick = current_tick;
}
if(tsc2100_read_volt(&bat1, &bat2, &aux))
{
/* Calculation was:
* (val << 10) / 4096 * 6 * 2.5
*/
current_voltage = (short)( (int) (bat1 * 15) >> 2 );
current_bat2 = (short)( (bat2 * 15) >> 2 );
current_aux = (short)( (aux * 15) >> 2 );
}
return current_voltage;
}