82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
package main
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import (
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"log"
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"os/exec"
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"strconv"
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"strings"
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"time"
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"git.kemonine.info/PiFrame/config"
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)
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const (
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CMD_VCGENCMD = "/opt/vc/bin//vcgencmd"
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CMD_VCGENCMD_DISPLAY_POWER = "display_power"
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)
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func main() {
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// Load the config file
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pfConfig, _ := config.LoadConfig(false)
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// Read config values
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hdmiOn := pfConfig.String(config.CONFIG_KEY_HDMI_ON)
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hdmiOff := pfConfig.String(config.CONFIG_KEY_HDMI_OFF)
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// Strip off systemd stuff we don't care about for this purpose
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hdmiOn = strings.TrimLeft(hdmiOn, "*-*-* ")
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hdmiOnSplit := strings.Split(hdmiOn, ":")
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// Split the config into hours/minutes/seconds
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hdmiOff = strings.TrimLeft(hdmiOff, "*-*-* ")
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hdmiOffSplit := strings.Split(hdmiOff, ":")
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// Parse hdmi on hours/minutes/seconds into ints so they can be used to create real date/time
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hdmiOnHour, err := strconv.Atoi(hdmiOnSplit[0])
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if err != nil {
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log.Fatalf("Could not parse hdmi on hour : %s", err)
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}
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hdmiOnMinute, err := strconv.Atoi(hdmiOnSplit[1])
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if err != nil {
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log.Fatalf("Could not parse hdmi on minute : %s", err)
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}
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hdmiOnSecond, err := strconv.Atoi(hdmiOnSplit[2])
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if err != nil {
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log.Fatalf("Could not parse htmi on second : %s", err)
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}
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// Parse hdmi off hours/minutes/seconds into ints so they can be used to create real date/time
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hdmiOffHour, err := strconv.Atoi(hdmiOffSplit[0])
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if err != nil {
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log.Fatalf("Could not parse hdmi off hour : %s", err)
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}
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hdmiOffMinute, err := strconv.Atoi(hdmiOffSplit[1])
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if err != nil {
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log.Fatalf("Could not parse hdmi off minute : %s", err)
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}
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hdmiOffSecond, err := strconv.Atoi(hdmiOffSplit[2])
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if err != nil {
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log.Fatalf("Could not parse hdmi off second : %s", err)
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}
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// Setup date/time vars for comparison
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currentTime := time.Now()
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hdmiOnTime := time.Date(currentTime.Year(), currentTime.Month(), currentTime.Day(), hdmiOnHour, hdmiOnMinute, hdmiOnSecond, 0, currentTime.Location())
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hdmiOffTime := time.Date(currentTime.Year(), currentTime.Month(), currentTime.Day(), hdmiOffHour, hdmiOffMinute, hdmiOffSecond, 0, currentTime.Location())
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// Turn on/off screen depending on current time
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vcgencmdOnOffFlag := "-1"
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if currentTime.After(hdmiOnTime) && currentTime.Before(hdmiOffTime) {
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vcgencmdOnOffFlag = "1"
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}
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if currentTime.After(hdmiOffTime) && currentTime.Before(hdmiOnTime) {
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vcgencmdOnOffFlag = "0"
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}
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hdmiControl := exec.Command(CMD_VCGENCMD, CMD_VCGENCMD_DISPLAY_POWER, vcgencmdOnOffFlag)
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err = hdmiControl.Run()
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if err != nil {
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log.Fatalf("Error turning display on/off (%s) : %s", vcgencmdOnOffFlag, err)
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}
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}
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