pmw3100, jeita->fg->charger

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于 2019-11-18 15:47:15 发布

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分类专栏： qcom charging

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本文详细介绍了电池管理系统中JEITA标准的实现方式，包括过冷、冷、热、过热状态的寄存器配置，充电电流和电压补偿设置，以及通过特定寄存器使能JEITA功能的方法。此外，还解释了电池NTC温度信息如何通过比较器输出真或假信号，反映至充电器JEITA状态的过程。

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too cold, cold, hot, too hot configuration in fg registers.

0x00004162 FG_BATT_INFO_JEITA_TOO_COLD

0x00004163 FG_BATT_INFO_JEITA_COLD

0x00004164 FG_BATT_INFO_JEITA_HOT

0x00004165 FG_BATT_INFO_JEITA_TOO_HOT

compensated charging current and voltage configuration in charger registers.

0x00001091 SCHG_CHGR_JEITA_FVCOMP_CFG

0x00001092 SCHG_CHGR_JEITA_CCCOMP_CFG

jeita is enabled by configure following register

0x00001090 SCHG_CHGR_JEITA_EN_CFG

battery NTC temperature infos -> fg, with NTC infos, fg comparator outputs true or false according to too cold, cold, too hot, hot settings, -> to charger jeita status in 0x0000100D SCHG_CHGR_BATTERY_CHARGER_STATUS_7

3 TOO_COLD_ADC Raw input from Fuel Gauge JEITA comparator indicating too cold
condition
2 TOO_HOT_ADC Raw input from Fuel Gauge JEITA comparator indicating too hot
condition
1 HOT_SL_ADC Raw input from Fuel Gauge JEITA comparator indicating soft hot
condition
0 COLD_SL_ADC Raw input from Fuel Gauge JEITA comparator indicating soft cold

after that, jeita settings take effect.
condition