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/*
* bq24190.c
*
* Copyright 2015 National Instruments Corp
*/
#ifdef CHARGER_TI
#include "config.h"
#include "bq24190.h"
#include <util/delay.h>
#include "io.h"
#include "i2c.h"
#include "debug.h"
#include "global.h"
#include "error.h"
#ifndef I2C_REWORK
#include "power.h"
#endif // I2C_REWORK
static io_pin_t USBPM_IRQ = IO_PB(1);
#ifdef ATTINY88_DIP
static io_pin_t CHRG_SDA = IO_PC(2);
static io_pin_t CHRG_SCL = IO_PC(3);
#else
#ifdef I2C_REWORK
static io_pin_t CHRG_SDA = IO_PC(4);
static io_pin_t CHRG_SCL = IO_PC(5);
#else
#define CHRG_SDA PWR_SDA
#define CHRG_SCL PWR_SCL
#endif // I2C_REWORK
#endif // ATTINY88_DIP
const bool _bq24190_pull_up = false;
#define BQ24190_BASE_ADDRESS (0x6B << 1)
#define BQ24190_WRITE_ADDRESS (BQ24190_BASE_ADDRESS + 0)
#define BQ24190_READ_ADDRESS (BQ24190_BASE_ADDRESS + 1)
enum BQ24190Registers
{
BQ24190_REG_INPUT_SOURCE_CTL= 0,
BQ24190_REG_PWR_ON_CONFIG = 1,
BQ24190_REG_CHARGE_CURRENT = 2,
BQ24190_REG_PRE_TERM_CURRENT= 3,
BQ24190_REG_CHARGE_VOLTAGE = 4,
BQ24190_REG_TIMER_CONTROL = 5,
BQ24190_REG_SYSTEM_STATUS = 8,
BQ24190_REG_FAULT = 9
};
/*
enum BQ24190TimerControl
{
};
*/
enum BQ24190Shifts
{
BQ24190_SHIFTS_CHARGER_CONFIG = 4,
BQ24190_SHIFTS_I2C_WATCHDOG = 4,
BQ24190_SHIFTS_CHARGER_STATUS = 4,
BQ24190_SHIFTS_CHARGER_FAULT = 4,
};
enum BQ24190VBusStatus
{
BQ24190_VBUS_UNKNOWN,
BQ24190_VBUS_USB,
BQ24190_VBUS_ADAPTER,
BQ24190_VBUS_OTG
};
enum BQ24190ChargerStatus
{
BQ24190_CHRG_STAT_NOT_CHARGING,
BQ24190_CHRG_STAT_PRE_CHARGE,
BQ24190_CHRG_STAT_FAST_CHARGING,
BQ24190_CHRG_STAT_CHARGE_TERMINATION_DONE,
BQ24190_CHRG_STAT_MASK = BQ24190_CHRG_STAT_CHARGE_TERMINATION_DONE
};
enum BQ24190SystemStatus
{
BQ24190_STATUS_DPM = 0x08,
BQ24190_STATUS_POWER_GOOD = 0x04,
BQ24190_STATUS_THERMAL_REGULATION = 0x02,
BQ24190_STATUS_VSYSMIN_REGULATION = 0x01
};
enum BQ24190Faults
{
BQ24190_FAULT_WATCHDOG_EXPIRED = 0x80,
BQ24190_FAULT_VBUS_OVERLOADED = 0x40,
BQ24190_FAULT_BATOVP = 0x08
};
enum BQ24190ChargerFaults
{
BQ24190_CHRGFAULT_NORMAL,
BQ24190_CHRGFAULT_INPUT,
BQ24190_CHRGFAULT_THERMAL,
BQ24190_CHRGFAULT_SAFETY_TIMER
};
enum BQ24190NTCFaults
{
BQ24190_NTCFAULT_NORMAL,
BQ24190_NTCFAULT_TS1_COLD,
BQ24190_NTCFAULT_TS1_HOT,
BQ24190_NTCFAULT_TS2_COLD,
BQ24190_NTCFAULT_TS2_HOT,
BQ24190_NTCFAULT_BOTH_COLD,
BQ24190_NTCFAULT_BOTH_HOT
};
bool bq24190_toggle_charger(bool on)
{
uint8_t config = 0;
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_PWR_ON_CONFIG, &config, _bq24190_pull_up) == false)
return false;
debug_log_ex("BQPC ", false);
debug_log_hex(config);
config &= ~(0x3 << BQ24190_SHIFTS_CHARGER_CONFIG);
if (on)
config |= (0x01 << BQ24190_SHIFTS_CHARGER_CONFIG); // Enable charger
if (i2c_write_ex(CHRG_SDA, CHRG_SCL, BQ24190_WRITE_ADDRESS, BQ24190_REG_PWR_ON_CONFIG, config, _bq24190_pull_up) == false)
return false;
////////
/*
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_PWR_ON_CONFIG, &config, _bq24190_pull_up) == false)
return false;
debug_log_ex("BQPC ", false);
debug_log_hex(config);
*/
////////
return true;
}
bool bq24190_init(bool disable_charger)
{
#ifdef I2C_REWORK
i2c_init_ex(CHRG_SDA, CHRG_SCL, _bq24190_pull_up);
#endif // I2C_REWORK
io_input_pin(USBPM_IRQ);
#if !defined(DEBUG) && !defined(ATTINY88_DIP)
//io_set_pin(USBPM_IRQ); // [Enable pull-up for Open Drain] AVR pull-up not enough
#endif // DEBUG
if (disable_charger)
{
if (bq24190_toggle_charger(false) == false)
return false;
}
///////////////////////////////////
uint8_t timer_control = 0;
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_TIMER_CONTROL, &timer_control, _bq24190_pull_up) == false)
return false;
debug_log_ex("BQTC ", false);
debug_log_hex(timer_control);
timer_control &= ~(0x3 << BQ24190_SHIFTS_I2C_WATCHDOG);
timer_control |= (0x00 << BQ24190_SHIFTS_I2C_WATCHDOG); // Disable I2C watch dog
if (i2c_write_ex(CHRG_SDA, CHRG_SCL, BQ24190_WRITE_ADDRESS, BQ24190_REG_TIMER_CONTROL, timer_control, _bq24190_pull_up) == false)
return false;
///////////////////////////////////
//BQ24190_REG_PWR_ON_CONFIG
// Minimum System Voltage Limit: (default) 101 3.5V
//BQ24190_REG_CHARGE_CURRENT
// Fast Charge Current Limit: (default) 011000 2048mA
//BQ24190_REG_PRE_TERM_CURRENT
// Pre-charge current limit: (default) 0001 256mA
// Termination current limit: (default) 0001 256mA
//BQ24190_REG_CHARGE_VOLTAGE
// Charge voltage limit: (default) 101100 4.208V
///////////////////////////////////
uint8_t input_src_ctl = 0;
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_INPUT_SOURCE_CTL, &input_src_ctl, _bq24190_pull_up) == false)
return false;
debug_log_ex("BQIS ", false);
debug_log_hex(input_src_ctl);
// Input voltage limit: (default) 0110 4.36V
//input_src_ctl &= ~(0x07);
input_src_ctl |= (0x07); // Set 3A limit
if (i2c_write_ex(CHRG_SDA, CHRG_SCL, BQ24190_WRITE_ADDRESS, BQ24190_REG_INPUT_SOURCE_CTL, input_src_ctl, _bq24190_pull_up) == false)
return false;
return true;
}
bool bq24190_has_interrupt(void)
{
//bool state = io_test_pin(USBPM_IRQ);
//debug_log_ex("BQIRQ", false);
//debug_log_byte(state);
//return (state != 1);
return (io_test_pin(USBPM_IRQ) == false);
}
static uint8_t _bq24190_last_status, _bq24190_last_fault;
bool _bq24190_handle_irq(void)
{
uint8_t val = 0x00;
bool result = false;
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_SYSTEM_STATUS, &val, _bq24190_pull_up) == false)
goto _bq24190_handle_fail;
debug_log_ex("BQST ", false);
debug_log_hex(val);
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_SYSTEM_STATUS, &val, _bq24190_pull_up) == false)
goto _bq24190_handle_fail;
_bq24190_last_status = val;
debug_log_ex("BQST ", false);
debug_log_hex(val);
/*if (val & LTC4155_WALLSNS_GOOD)
{
uint8_t wall_state = 0;
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, LTC4155_READ_ADDRESS, LTC4155_REG_WALL, &wall_state, _ltc4155_pull_up) == false)
goto _bq24190_handle_fail;
wall_state &= ~0x1E;
wall_state |= 0x0E;
if (i2c_write_ex(CHRG_SDA, CHRG_SCL, LTC4155_WRITE_ADDRESS, LTC4155_REG_WALL, wall_state, _ltc4155_pull_up) == false)
goto _bq24190_handle_fail;
debug_log("I+");
}*/
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_FAULT, &val, _bq24190_pull_up) == false)
goto _bq24190_handle_fail;
debug_log_ex("BQF ", false);
debug_log_hex(val);
if (i2c_read2_ex(CHRG_SDA, CHRG_SCL, BQ24190_READ_ADDRESS, BQ24190_REG_FAULT, &val, _bq24190_pull_up) == false)
goto _bq24190_handle_fail;
_bq24190_last_fault = val;
debug_log_ex("BQF ", false);
debug_log_hex(val);
val = (_bq24190_last_status >> BQ24190_SHIFTS_CHARGER_STATUS) & BQ24190_CHRG_STAT_MASK;
if (_state.blink_error == BlinkError_None)
{
switch (val)
{
case BQ24190_CHRG_STAT_PRE_CHARGE:
case BQ24190_CHRG_STAT_FAST_CHARGING:
//case BQ24190_CHRG_STAT_CHARGE_TERMINATION_DONE:
{
if ((_state.battery_not_present == false)/* &&
(_ltc4155_last_good & (LTC4155_WALLSNS_GOOD | LTC4155_USBSNS_GOOD))*/)
{
//charge_set_led(true);
charge_notify(true);
break;
}
}
//case BQ24190_CHRG_STAT_NOT_CHARGING:
default:
//charge_set_led(false);
charge_notify(false);
}
}
// bq24190_dump();
result = true;
_bq24190_handle_fail:
return result;
}
bool bq24190_handle_irq(void) // IRQ is pulsed (not held)
{
pmc_mask_irqs(true);
//_delay_ms(250); // [Wait for registers to update]
bool result = _bq24190_handle_irq();
pmc_mask_irqs(false);
return result;
}
//void bq24190_dump(void)
/*
bool bq24190_set_charge_current_limit(uint8_t deciamps)
{
return true;
}
*/
#endif // CHARGER_TI
|
