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main: Add empty battery screen

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This disables low battery monitor shutdown (LBM shutdown) on boot and checks if battery is enough.

The logic is as follows:

If battery is not enough:
- If not charging and 15s pass, it will re enable LBM shutdown and power off.
- If charging, it will wait until it is charged above the limit.
 Screen will auto turn off to save power. A press on Power button or a change on charger, will enable it for another 15s.

If battery is enough:
- Enables LBM shutdown and continues with the boot process.
This commit is contained in:
CTCaer
2020-04-06 05:54:45 +03:00
parent 52c506af9a
commit 5f142b4c86
7 changed files with 179 additions and 10 deletions
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111
bootloader/main.c
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@@ -35,7 +35,10 @@
#include "mem/heap.h"
#include "mem/minerva.h"
#include "mem/sdram.h"
#include "power/bq24193.h"
#include "power/max17050.h"
#include "power/max77620.h"
#include "power/max7762x.h"
#include "rtc/max77620-rtc.h"
#include "soc/bpmp.h"
#include "soc/fuse.h"
@@ -1147,6 +1150,111 @@ static void _show_errors()
}
}
static void _check_low_battery()
{
int enough_battery;
int batt_volt = 3200;
int charge_status = 0;
bq24193_get_property(BQ24193_ChargeStatus, &charge_status);
max17050_get_property(MAX17050_AvgVCELL, &batt_volt);
enough_battery = charge_status ? 3250 : 3000;
if (batt_volt > enough_battery)
return;
// Prepare battery icon resources.
u8 *battery_res = malloc(ALIGN(SZ_BATTERY_EMPTY, 0x1000));
blz_uncompress_srcdest(BATTERY_EMPTY_BLZ, SZ_BATTERY_EMPTY_BLZ, battery_res, SZ_BATTERY_EMPTY);
u8 *battery_icon = malloc(0x95A); // 21x38x3
u8 *charging_icon = malloc(0x2F4); // 21x12x3
u8 *no_charging_icon = calloc(0x2F4, 1);
memcpy(charging_icon, battery_res, 0x2F4);
memcpy(battery_icon, battery_res + 0x2F4, 0x95A);
u32 battery_icon_y_pos = 1280 - 16 - Y_BATTERY_EMPTY_BATT;
u32 charging_icon_y_pos = 1280 - 16 - Y_BATTERY_EMPTY_BATT - 12 - Y_BATTERY_EMPTY_CHRG;
free(battery_res);
charge_status = !charge_status;
u32 timer = 0;
bool screen_on = false;
while (true)
{
bpmp_msleep(250);
// Refresh battery stats.
int current_charge_status = 0;
bq24193_get_property(BQ24193_ChargeStatus, &current_charge_status);
max17050_get_property(MAX17050_AvgVCELL, &batt_volt);
enough_battery = current_charge_status ? 3250 : 3000;
if (batt_volt > enough_battery)
break;
// Refresh charging icon.
if (screen_on && (charge_status != current_charge_status))
{
if (current_charge_status)
gfx_set_rect_rgb(charging_icon, X_BATTERY_EMPTY, Y_BATTERY_EMPTY_CHRG, 16, charging_icon_y_pos);
else
gfx_set_rect_rgb(no_charging_icon, X_BATTERY_EMPTY, Y_BATTERY_EMPTY_CHRG, 16, charging_icon_y_pos);
}
// Check if it's time to turn off display.
if (screen_on && timer < get_tmr_ms())
{
if (!current_charge_status)
{
max77620_low_battery_monitor_config(true);
power_off();
}
display_end();
screen_on = false;
}
// Check if charging status changed or Power button was pressed.
if (((charge_status != current_charge_status) || (btn_wait_timeout(0, BTN_POWER) & BTN_POWER)))
{
if (!screen_on)
{
display_init();
u32 *fb = display_init_framebuffer();
gfx_init_ctxt(fb, 720, 1280, 720);
gfx_set_rect_rgb(battery_icon, X_BATTERY_EMPTY, Y_BATTERY_EMPTY_BATT, 16, battery_icon_y_pos);
if (current_charge_status)
gfx_set_rect_rgb(charging_icon, X_BATTERY_EMPTY, Y_BATTERY_EMPTY_CHRG, 16, charging_icon_y_pos);
else
gfx_set_rect_rgb(no_charging_icon, X_BATTERY_EMPTY, Y_BATTERY_EMPTY_CHRG, 16, charging_icon_y_pos);
display_backlight_pwm_init();
display_backlight_brightness(100, 1000);
screen_on = true;
}
timer = get_tmr_ms() + 15000;
}
charge_status = current_charge_status;
}
display_end();
free(battery_icon);
free(charging_icon);
free(no_charging_icon);
// Re enable Low Battery Monitor shutdown.
max77620_low_battery_monitor_config(true);
}
static void _about()
{
static const char credits[] =
@@ -1318,6 +1426,9 @@ void ipl_main()
uart_wait_idle(DEBUG_UART_PORT, UART_TX_IDLE);
#endif
// Check if battery is enough.
_check_low_battery();
// Set bootloader's default configuration.
set_default_configuration();