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Re-enable 3.3V GPIO output on reboot #4244

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Re-enable 3.3V GPIO output on reboot #4244

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23 changes: 23 additions & 0 deletions lib/drivers/bq25896.c
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,16 @@ static bq25896_regs_t bq25896_regs;
bool bq25896_init(const FuriHalI2cBusHandle* handle) {
bool result = true;

// Check whether OTG is enabled before resetting registers
result &= furi_hal_i2c_read_mem(
handle,
BQ25896_ADDRESS,
0x00,
(uint8_t*)&bq25896_regs,
sizeof(bq25896_regs),
BQ25896_I2C_TIMEOUT);
bool otg_enabled = bq25896_regs.r03.OTG_CONFIG;

bq25896_regs.r14.REG_RST = 1;
result &= furi_hal_i2c_write_reg_8(
handle, BQ25896_ADDRESS, 0x14, *(uint8_t*)&bq25896_regs.r14, BQ25896_I2C_TIMEOUT);
Expand Down Expand Up @@ -75,6 +85,19 @@ bool bq25896_init(const FuriHalI2cBusHandle* handle) {
sizeof(bq25896_regs),
BQ25896_I2C_TIMEOUT);

// Re-enable OTG output if it was previously enabled
bq25896_regs.r03.OTG_CONFIG = otg_enabled;
furi_hal_i2c_write_reg_8(
handle, BQ25896_ADDRESS, 0x03, *(uint8_t*)&bq25896_regs.r03, BQ25896_I2C_TIMEOUT);

result &= furi_hal_i2c_read_mem(
handle,
BQ25896_ADDRESS,
0x00,
(uint8_t*)&bq25896_regs,
sizeof(bq25896_regs),
BQ25896_I2C_TIMEOUT);

return result;
}

Expand Down