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pmic: Enable Low Battery Shutdown for 2.8V

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There's an increasing ammount of users that kill their batteries when forgetting their devices into AutoRCM / RCM mode.

This will now force a shutdown the moment the battery reaches 2.8V. Even if device is inside RCM mode.

Notice: We might need to increase the limit.
This commit is contained in:
CTCaer 2019-12-04 22:06:34 +02:00
parent a16b1af698
commit 9811ba53e0
5 changed files with 33 additions and 11 deletions
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16
bootloader/power/max77620.h
View file

@ -19,9 +19,19 @@
#define MAX77620_CNFGGLBL1_LBDAC_EN (1 << 7)
#define MAX77620_CNFGGLBL1_MPPLD (1 << 6)
#define MAX77620_CNFGGLBL1_LBHYST ((1 << 5) | (1 << 4))
#define MAX77620_CNFGGLBL1_LBHYST_N (1 << 4)
#define MAX77620_CNFGGLBL1_LBDAC 0x0E
#define MAX77620_CNFGGLBL1_LBDAC_N (1 << 1)
#define MAX77620_CNFGGLBL1_LBHYST_100 (0 << 4)
#define MAX77620_CNFGGLBL1_LBHYST_200 (1 << 4)
#define MAX77620_CNFGGLBL1_LBHYST_300 (2 << 4)
#define MAX77620_CNFGGLBL1_LBHYST_400 (3 << 4)
#define MAX77620_CNFGGLBL1_LBDAC_MASK 0x0E
#define MAX77620_CNFGGLBL1_LBDAC_2700 (0 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_2800 (1 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_2900 (2 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3000 (3 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3100 (4 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3200 (5 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3300 (6 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3400 (7 << 1)
#define MAX77620_CNFGGLBL1_LBRSTEN (1 << 0)
#define MAX77620_REG_CNFGGLBL2 0x01

5
bootloader/power/max7762x.c
View file

@ -170,6 +170,7 @@ void max77620_config_default()
void max77620_low_battery_monitor_config()
{
i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_CNFGGLBL1,
MAX77620_CNFGGLBL1_LBDAC_EN | MAX77620_CNFGGLBL1_LBHYST_N | MAX77620_CNFGGLBL1_LBDAC_N);
_max77620_try_set_reg(MAX77620_REG_CNFGGLBL1,
MAX77620_CNFGGLBL1_LBDAC_EN | MAX77620_CNFGGLBL1_MPPLD |
MAX77620_CNFGGLBL1_LBHYST_200 | MAX77620_CNFGGLBL1_LBDAC_2800);
}

2
bootloader/soc/hw_init.c
View file

@ -258,7 +258,7 @@ void _config_regulators()
MAX77621_T_JUNCTION_120 | MAX77621_FT_ENABLE | MAX77621_CKKADV_TRIP_75mV_PER_US_HIST_DIS |
MAX77621_CKKADV_TRIP_150mV_PER_US | MAX77621_INDUCTOR_NOMINAL);
// Disable low battery shutdown monitor.
// Enable low battery shutdown monitor for < 2800mV.
max77620_low_battery_monitor_config();
}

16
nyx/nyx_gui/power/max77620.h
View file

@ -19,9 +19,19 @@
#define MAX77620_CNFGGLBL1_LBDAC_EN (1 << 7)
#define MAX77620_CNFGGLBL1_MPPLD (1 << 6)
#define MAX77620_CNFGGLBL1_LBHYST ((1 << 5) | (1 << 4))
#define MAX77620_CNFGGLBL1_LBHYST_N (1 << 4)
#define MAX77620_CNFGGLBL1_LBDAC 0x0E
#define MAX77620_CNFGGLBL1_LBDAC_N (1 << 1)
#define MAX77620_CNFGGLBL1_LBHYST_100 (0 << 4)
#define MAX77620_CNFGGLBL1_LBHYST_200 (1 << 4)
#define MAX77620_CNFGGLBL1_LBHYST_300 (2 << 4)
#define MAX77620_CNFGGLBL1_LBHYST_400 (3 << 4)
#define MAX77620_CNFGGLBL1_LBDAC_MASK 0x0E
#define MAX77620_CNFGGLBL1_LBDAC_2700 (0 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_2800 (1 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_2900 (2 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3000 (3 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3100 (4 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3200 (5 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3300 (6 << 1)
#define MAX77620_CNFGGLBL1_LBDAC_3400 (7 << 1)
#define MAX77620_CNFGGLBL1_LBRSTEN (1 << 0)
#define MAX77620_REG_CNFGGLBL2 0x01

5
nyx/nyx_gui/power/max7762x.c
View file

@ -173,8 +173,9 @@ void max77620_config_default()
void max77620_low_battery_monitor_config()
{
i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_CNFGGLBL1,
MAX77620_CNFGGLBL1_LBDAC_EN | MAX77620_CNFGGLBL1_LBHYST_N | MAX77620_CNFGGLBL1_LBDAC_N);
_max77620_try_set_reg(MAX77620_REG_CNFGGLBL1,
MAX77620_CNFGGLBL1_LBDAC_EN | MAX77620_CNFGGLBL1_MPPLD |
MAX77620_CNFGGLBL1_LBHYST_200 | MAX77620_CNFGGLBL1_LBDAC_2800);
}
#pragma GCC pop_options