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FuriHal, Power, UnitTests: battery charging voltage limit API (#2063)

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This commit is contained in:
Shane Synan
2022-12-08 01:57:49 -05:00
committed by GitHub
parent 6a470a464e
commit 5c3a5cd8f7
13 changed files with 173 additions and 4 deletions
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27
lib/drivers/bq25896.c
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@@ -132,6 +132,33 @@ bool bq25896_is_otg_enabled(FuriHalI2cBusHandle* handle) {
return bq25896_regs.r03.OTG_CONFIG;
}
uint16_t bq25896_get_vreg_voltage(FuriHalI2cBusHandle* handle) {
furi_hal_i2c_read_reg_8(
handle, BQ25896_ADDRESS, 0x06, (uint8_t*)&bq25896_regs.r06, BQ25896_I2C_TIMEOUT);
return (uint16_t)bq25896_regs.r06.VREG * 16 + 3840;
}
void bq25896_set_vreg_voltage(FuriHalI2cBusHandle* handle, uint16_t vreg_voltage) {
if(vreg_voltage < 3840) {
// Minimum value is 3840 mV
bq25896_regs.r06.VREG = 0;
} else {
// Find the nearest voltage value (subtract offset, divide into sections)
// Values are truncated downward as needed (e.g. 4200mV -> 4192 mV)
bq25896_regs.r06.VREG = (uint8_t)((vreg_voltage - 3840) / 16);
}
// Do not allow values above 23 (0x17, 4208mV)
// Exceeding 4.2v will overcharge the battery!
if(bq25896_regs.r06.VREG > 23) {
bq25896_regs.r06.VREG = 23;
}
// Apply changes
furi_hal_i2c_write_reg_8(
handle, BQ25896_ADDRESS, 0x06, *(uint8_t*)&bq25896_regs.r06, BQ25896_I2C_TIMEOUT);
}
bool bq25896_check_otg_fault(FuriHalI2cBusHandle* handle) {
furi_hal_i2c_read_reg_8(
handle, BQ25896_ADDRESS, 0x0C, (uint8_t*)&bq25896_regs.r0C, BQ25896_I2C_TIMEOUT);