⚡ Initial Release - ChargeBoost Magisk Module

Author: Dev97633

README.md

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+# FastCharge Next (Magisk Module)
+
+Safely increase charging current with a small thermal guard.
+Config file: /sdcard/FastCharge/config.prop
+
+Use at your own risk.

customize.sh

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+#!/system/bin/sh
+# Magisk install-time script: seed default config
+
+CFG_DIR="/sdcard/FastCharge"
+CFG_FILE="\$CFG_DIR/config.prop"
+
+mkdir -p "\$CFG_DIR" 2>/dev/null || true
+
+if [ ! -f "\$CFG_FILE" ]; then
+  cat > "\$CFG_FILE" <<'CFG'
+# ===== FastCharge Next config =====
+# Units:
+#   *_MA   -> milliamps (mA)
+#   *_UV   -> microvolts (uV)
+
+# Target maximum charge current when cool (mA)
+CURRENT_MAX_MA=2000
+
+# Battery constant-charge current cap (mA). 0 = don't touch
+CC_CURRENT_MAX_MA=0
+
+# Battery constant-charge voltage max (uV). 0 = don't touch
+CONSTANT_VOLTAGE_MAX_UV=0
+
+# Temperature limits (°C)
+TEMP_HOT_C=42
+TEMP_COOL_C=39
+
+# Logging
+LOG_ENABLED=1
+CFG
+fi
+
+ui_print "FastCharge Next: config seeded at \$CFG_FILE"

module.prop

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+id=fastcharge-next
+name=FastCharge Next
+version=1.0
+versionCode=100
+author=YourName
+description=Safely nudge charging current with thermal guard. Config at /sdcard/FastCharge/config.prop

post-fs-data.sh

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+#!/system/bin/sh
+set -eu
+MODDIR="${0%/*}"
+LOG="$MODDIR/log.txt"
+touch "$LOG" 2>/dev/null || true
+chmod 0644 "$LOG" 2>/dev/null || true

service.sh

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+#!/system/bin/sh
+# FastCharge Next – boot service
+set -eu
+
+MODDIR="${0%/*}"
+LOG="$MODDIR/log.txt"
+CFG="/sdcard/FastCharge/config.prop"
+
+log() {
+  [ "${LOG_ENABLED:-1}" = "1" ] && echo "$(date '+%F %T') | $*" >> "$LOG"
+}
+
+# Load config (with defaults)
+CURRENT_MAX_MA=2000
+CC_CURRENT_MAX_MA=0
+CONSTANT_VOLTAGE_MAX_UV=0
+TEMP_HOT_C=42
+TEMP_COOL_C=39
+LOG_ENABLED=1
+
+[ -f "$CFG" ] && . "$CFG" || true
+
+to_uA() { # mA -> uA
+  awk "BEGIN{printf \"%d\", $1*1000}"
+}
+
+# Find candidate sysfs nodes
+PS_BASE="/sys/class/power_supply"
+CAND_USB="$PS_BASE/usb $PS_BASE/charger $PS_BASE/dc $PS_BASE/ac"
+BAT="$PS_BASE/battery"
+
+first_writable() {
+  for f in $1; do
+    if [ -e "$f" ] && [ -w "$f" ]; then
+      echo "$f"; return 0
+    fi
+  done
+  return 1
+}
+
+USB_CURRENT_NODES=""
+for p in $CAND_USB; do
+  [ -d "$p" ] || continue
+  for n in current_max input_current_limit; do
+    USB_CURRENT_NODES="$USB_CURRENT_NODES $p/$n"
+  done
+done
+
+BAT_CURRENT_NODES="$BAT/constant_charge_current_max $BAT/charge_current_max"
+BAT_VOLT_NODE="$BAT/constant_charge_voltage_max"
+TEMP_NODE="$BAT/temp"
+
+USB_NODE="$(first_writable "$USB_CURRENT_NODES" || true)"
+BAT_CUR_NODE="$(first_writable "$BAT_CURRENT_NODES" || true)"
+BAT_VOLT_NODE_WRITABLE="$(first_writable "$BAT_VOLT_NODE" || true)"
+
+log "Detected nodes: USB=$USB_NODE BAT_CUR=$BAT_CUR_NODE BAT_VOLT=$BAT_VOLT_NODE_WRITABLE TEMP=$TEMP_NODE"
+
+TARGET_USB_UA="$(to_uA "$CURRENT_MAX_MA")"
+TARGET_BAT_UA="$(to_uA "${CC_CURRENT_MAX_MA:-0}")"
+
+apply_targets() {
+  local why="${1:-apply}"
+  if [ -n "${USB_NODE:-}" ] && [ "${CURRENT_MAX_MA:-0}" -gt 0 ]; then
+    echo "$TARGET_USB_UA" > "$USB_NODE" 2>/dev/null || log "WARN: write USB current failed"
+    log "$why: set USB current_max to ${CURRENT_MAX_MA}mA"
+  fi
+  if [ -n "${BAT_CUR_NODE:-}" ] && [ "${CC_CURRENT_MAX_MA:-0}" -gt 0 ]; then
+    echo "$TARGET_BAT_UA" > "$BAT_CUR_NODE" 2>/dev/null || log "WARN: write BAT current failed"
+    log "$why: set BAT constant_charge_current_max to ${CC_CURRENT_MAX_MA}mA"
+  fi
+  if [ -n "${BAT_VOLT_NODE_WRITABLE:-}" ] && [ "${CONSTANT_VOLTAGE_MAX_UV:-0}" -gt 0 ]; then
+    echo "$CONSTANT_VOLTAGE_MAX_UV" > "$BAT_VOLT_NODE_WRITABLE" 2>/dev/null || log "WARN: write BAT voltage failed"
+    log "$why: set BAT constant_charge_voltage_max to ${CONSTANT_VOLTAGE_MAX_UV}uV"
+  fi
+}
+
+clamp() {
+  awk -v v="$1" -v lo="$2" -v hi="$3" 'BEGIN{ if(v<lo) v=lo; if(v>hi) v=hi; printf "%d", v }'
+}
+
+CURRENT_MAX_MA="$(clamp "${CURRENT_MAX_MA:-0}" 500 3000)"
+CC_CURRENT_MAX_MA="$(clamp "${CC_CURRENT_MAX_MA:-0}" 0 3000)"
+CONSTANT_VOLTAGE_MAX_UV="$(clamp "${CONSTANT_VOLTAGE_MAX_UV:-0}" 0 4600000)"
+TEMP_HOT_C="$(clamp "${TEMP_HOT_C:-42}" 35 48)"
+TEMP_COOL_C="$(clamp "${TEMP_COOL_C:-39}" 30 47)"
+
+log "Config: USB=${CURRENT_MAX_MA}mA BAT=${CC_CURRENT_MAX_MA}mA VOLT=${CONSTANT_VOLTAGE_MAX_UV}uV HOT=${TEMP_HOT_C}C COOL=${TEMP_COOL_C}C"
+
+apply_targets "initial"
+
+prev_state="normal"
+while :; do
+  sleep 20
+  [ -e "$TEMP_NODE" ] || continue
+  raw="$(cat "$TEMP_NODE" 2>/dev/null || echo 0)"
+  temp_c="$(awk "BEGIN{printf \"%.1f\", $raw/10}")"
+
+  if awk "BEGIN{exit !($temp_c >= $TEMP_HOT_C)}"; then
+    backoff_mA=1000
+    if [ "$prev_state" != "hot" ]; then
+      if [ -n "${USB_NODE:-}" ]; then
+        echo "$(to_uA $backoff_mA)" > "$USB_NODE" 2>/dev/null || true
+      fi
+      if [ -n "${BAT_CUR_NODE:-}" ] && [ "${CC_CURRENT_MAX_MA:-0}" -gt 0 ]; then
+        echo "$(to_uA $backoff_mA)" > "$BAT_CUR_NODE" 2>/dev/null || true
+      fi
+      log "thermal: $temp_c C >= ${TEMP_HOT_C}C -> backoff to ${backoff_mA}mA"
+      prev_state="hot"
+    fi
+  elif awk "BEGIN{exit !($temp_c <= $TEMP_COOL_C)}"; then
+    if [ "$prev_state" = "hot" ]; then
+      apply_targets "restore"
+      log "thermal: $temp_c C <= ${TEMP_COOL_C}C -> restored targets"
+      prev_state="normal"
+    fi
+  fi
+done