first commit

dash/staging/device/dashboard/dash.sh

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+#!/usr/bin/env sh
+DEBUG=${DEBUG:-false}
+[ "$DEBUG" = true ] && set -x
+
+DIR="$(dirname "$0")"
+DASH_PNG="$DIR/dash.png"
+FETCH_DASHBOARD_CMD="$DIR/local/fetch-dashboard.sh"
+LOW_BATTERY_CMD="$DIR/local/low-battery.sh"
+
+REFRESH_SCHEDULE=${REFRESH_SCHEDULE:-"2,32 8-17 * * MON-FRI"}
+FULL_DISPLAY_REFRESH_RATE=${FULL_DISPLAY_REFRESH_RATE:-0}
+SLEEP_SCREEN_INTERVAL=${SLEEP_SCREEN_INTERVAL:-3600}
+RTC=/sys/devices/platform/mxc_rtc.0/wakeup_enable
+
+LOW_BATTERY_REPORTING=${LOW_BATTERY_REPORTING:-false}
+LOW_BATTERY_THRESHOLD_PERCENT=${LOW_BATTERY_THRESHOLD_PERCENT:-10}
+
+num_refresh=0
+
+init() {
+  if [ -z "$TIMEZONE" ] || [ -z "$REFRESH_SCHEDULE" ]; then
+    echo "Missing required configuration."
+    echo "Timezone: ${TIMEZONE:-(not set)}."
+    echo "Schedule: ${REFRESH_SCHEDULE:-(not set)}."
+    exit 1
+  fi
+
+  echo "Starting dashboard with $REFRESH_SCHEDULE refresh..."
+
+  /etc/init.d/framework stop
+  initctl stop webreader >/dev/null 2>&1
+  echo powersave >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
+  lipc-set-prop com.lab126.powerd preventScreenSaver 1
+}
+
+prepare_sleep() {
+  echo "Preparing sleep"
+
+  /usr/sbin/eips -f -g "$DIR/sleeping.png"
+
+  # Give screen time to refresh
+  sleep 2
+
+  # Ensure a full screen refresh is triggered after wake from sleep
+  num_refresh=$FULL_DISPLAY_REFRESH_RATE
+}
+
+refresh_dashboard() {
+  echo "Refreshing dashboard"
+  "$DIR/wait-for-wifi.sh" "$WIFI_TEST_IP"
+
+  "$FETCH_DASHBOARD_CMD" "$DASH_PNG"
+  fetch_status=$?
+
+  if [ "$fetch_status" -ne 0 ]; then
+    echo "Not updating screen, fetch-dashboard returned $fetch_status"
+    return 1
+  fi
+
+  if [ "$num_refresh" -eq "$FULL_DISPLAY_REFRESH_RATE" ]; then
+    num_refresh=0
+
+    # trigger a full refresh once in every 4 refreshes, to keep the screen clean
+    echo "Full screen refresh"
+    /usr/sbin/eips -f -g "$DASH_PNG"
+  else
+    echo "Partial screen refresh"
+    /usr/sbin/eips -g "$DASH_PNG"
+  fi
+
+  num_refresh=$((num_refresh + 1))
+}
+
+log_battery_stats() {
+  battery_level=$(gasgauge-info -c)
+  echo "$(date) Battery level: $battery_level."
+
+  if [ "$LOW_BATTERY_REPORTING" = true ]; then
+    battery_level_numeric=${battery_level%?}
+    if [ "$battery_level_numeric" -le "$LOW_BATTERY_THRESHOLD_PERCENT" ]; then
+      "$LOW_BATTERY_CMD" "$battery_level_numeric"
+    fi
+  fi
+}
+
+rtc_sleep() {
+  duration=$1
+
+  if [ "$DEBUG" = true ]; then
+    sleep "$duration"
+  else
+    # shellcheck disable=SC2039
+    [ "$(cat "$RTC")" -eq 0 ] && echo -n "$duration" >"$RTC"
+    echo "mem" >/sys/power/state
+  fi
+}
+
+main_loop() {
+  while true; do
+    log_battery_stats
+
+    next_wakeup_secs=$("$DIR/next-wakeup" --schedule="$REFRESH_SCHEDULE" --timezone="$TIMEZONE")
+
+    if [ "$next_wakeup_secs" -gt "$SLEEP_SCREEN_INTERVAL" ]; then
+      action="sleep"
+      prepare_sleep
+    else
+      action="suspend"
+      refresh_dashboard
+    fi
+
+    # take a bit of time before going to sleep, so this process can be aborted
+    sleep 10
+
+    echo "Going to $action, next wakeup in ${next_wakeup_secs}s"
+
+    rtc_sleep "$next_wakeup_secs"
+  done
+}
+
+init
+main_loop

dash/staging/device/dashboard/local/env.sh

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+#!/usr/bin/env sh
+
+# Export environment variables here
+export WIFI_TEST_IP=${WIFI_TEST_IP:-1.1.1.1}
+# 测试配置：全天每分钟刷新一次，便于验证图片拉取与屏幕刷新是否正常。
+export REFRESH_SCHEDULE=${REFRESH_SCHEDULE:-"* * * * *"}
+export TIMEZONE=${TIMEZONE:-"Asia/Shanghai"}
+
+# By default, partial screen updates are used to update the screen,
+# to prevent the screen from flashing. After a few partial updates,
+# the screen will start to look a bit distorted (due to e-ink ghosting).
+# 测试阶段强制每次都做一次全刷，避免首页残影和局部刷新的旧内容干扰验证。
+# 等图片尺寸与刷新逻辑确认无误后，再改回 4 之类的值以节省功耗。
+export FULL_DISPLAY_REFRESH_RATE=${FULL_DISPLAY_REFRESH_RATE:-0}
+
+# When the time until the next wakeup is greater or equal to this number,
+# the dashboard will not be refreshed anymore, but instead show a
+# 'kindle is sleeping' screen. This can be useful if your schedule only runs
+# during the day, for example.
+export SLEEP_SCREEN_INTERVAL=3600
+
+export LOW_BATTERY_REPORTING=${LOW_BATTERY_REPORTING:-false}
+export LOW_BATTERY_THRESHOLD_PERCENT=10

dash/staging/device/dashboard/local/fetch-dashboard.sh

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+#!/usr/bin/env sh
+# Fetch a new dashboard image, make sure to output it to "$1".
+# For example:
+"$(dirname "$0")/../xh" -d -q -o "$1" get https://raw.githubusercontent.com/pascalw/kindle-dash/master/example/example.png

dash/staging/device/dashboard/local/low-battery.sh

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+#!/usr/bin/env sh
+battery_level_percentage=$1
+last_battery_report_state="$(dirname "$0")/state/last_battery_report"
+
+previous_report_timestamp=$(cat "$last_battery_report_state" 2>/dev/null || echo '-1')
+now=$(date +%s)
+
+# Implement desired logic here. The example below for example only reports low
+# battery every 24 hours.
+
+if [ "$previous_report_timestamp" -eq -1 ] ||
+  [ $((now - previous_report_timestamp)) -gt 86400 ]; then
+  # Replace this with for example an HTTP call via curl, or xh
+  echo "Reporting low battery: $battery_level_percentage%"
+
+  echo "$now" >"$last_battery_report_state"
+fi

dash/staging/device/dashboard/start.sh

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+#!/usr/bin/env sh
+DEBUG=${DEBUG:-false}
+[ "$DEBUG" = true ] && set -x
+
+DIR="$(dirname "$0")"
+ENV_FILE="$DIR/local/env.sh"
+LOG_FILE="$DIR/logs/dash.log"
+
+mkdir -p "$(dirname "$LOG_FILE")"
+
+# shellcheck disable=SC1090
+[ -f "$ENV_FILE" ] && . "$ENV_FILE"
+
+if [ "$DEBUG" = true ]; then
+  "$DIR/dash.sh"
+else
+  "$DIR/dash.sh" >>"$LOG_FILE" 2>&1 &
+fi

dash/staging/device/dashboard/stop.sh

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+#!/usr/bin/env sh
+pkill -f dash.sh

dash/staging/device/dashboard/wait-for-wifi.sh

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+#!/usr/bin/env sh
+test_ip=$1
+
+if [ -z "$test_ip" ]; then
+  echo "No test ip specified"
+  exit 1
+fi
+
+wait_for_wifi() {
+  max_retry=30
+  counter=0
+
+  ping -c 1 "$test_ip" >/dev/null 2>&1
+
+  # shellcheck disable=SC2181
+  while [ $? -ne 0 ]; do
+    [ $counter -eq $max_retry ] && echo "Couldn't connect to Wi-Fi" && exit 1
+    counter=$((counter + 1))
+
+    sleep 1
+    ping -c 1 "$test_ip" >/dev/null 2>&1
+  done
+}
+
+wait_for_wifi
+echo "Wi-Fi connected"

dash/staging/device/extensions/kindle-dash/config.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<extension>
+	<information>
+		<name>Kindle dashboard</name>
+		<id>pascalw-kindle-dash</id>
+	</information>
+	<menus>
+		<menu type="json" dynamic="true">menu.json</menu>
+	</menus>
+</extension>

dash/staging/device/extensions/kindle-dash/menu.json

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+{
+  "items": [
+     {"name": "Kindle Dashboard", "action": "/mnt/us/dashboard/start.sh"}
+  ]
+}