add devterm_fan_daemon_cpi_a06 code

Code/devterm_fan_daemon_cpi_a06/README.md

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+# Fan control daemon for devterm A06()
+ 
+## Install
+
+**devterm is pre-installed this package, so devterm A06 users do not need to repeat the installation steps**
+
+```
+wget -O - https://raw.githubusercontent.com/clockworkpi/apt/main/debian/KEY.gpg | sudo apt-key add -
+echo "deb https://raw.githubusercontent.com/clockworkpi/apt/main/debian/ stable main" | sudo tee -a /etc/apt/sources.list.d/clockworkpi.list
+
+sudo apt update && apt install -y devterm-fan-daemon-cpi-a06
+```
+
+## Change the threshold temperature
+
+Edit `/usr/local/bin/temp_fan_daemon_a06.py`
+
+line starts with `MAX_TEMP=70000`
+
+change the value of MAX_TEMP to be your target temperature value multiplied by 1000,eg 70000 for 70 degree,80000 for 80 degree  
+
+for A06 recommended reference temperature range 70-80 
+
+then restart systemd service to take effect
+
+`sudo systemctl restart devterm-fan-temp-daemon-a06`
+
+

Code/devterm_fan_daemon_cpi_a06/etc/systemd/system/devterm-fan-temp-daemon-a06.service

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+[Unit]
+Description=devterm a06 fan control daemon
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/python3 /usr/local/bin/temp_fan_daemon_a06.py
+
+
+[Install]
+WantedBy=multi-user.target

Code/devterm_fan_daemon_cpi_a06/temp_fan_daemon_a06.py

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+#!/usr/bin/python3
+
+import glob
+import os
+import sys,getopt
+import subprocess
+import time
+
+cpus = []
+mid_freq = 0
+max_freq = 0
+
+MAX_TEMP=70000
+ONCE_TIME=30
+
+def init_fan_gpio():
+    os.popen("gpio mode 41 out")
+
+def fan_on():
+    init_fan_gpio()
+    os.popen("gpio write 41 1")
+    time.sleep(ONCE_TIME)
+
+def fan_off():
+    init_fan_gpio()
+    os.popen("gpio write 41 0")
+
+
+def isDigit(x):
+    try:
+        float(x)
+        return True
+    except ValueError:
+        return False
+
+
+def cpu_infos():
+    global cpus
+    global mid_freq
+    global max_freq
+
+    cpus = glob.glob('/sys/devices/system/cpu/cpu[0-9]')
+    cpus.sort()
+#/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
+#/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
+
+    scaling_available_freq = open(os.path.join(cpus[0],"cpufreq/scaling_available_frequencies"),"r").read()
+    scaling_available_freq = scaling_available_freq.strip("\n")
+    scaling_available_freqs = scaling_available_freq.split(" ")
+
+    for var in scaling_available_freqs:
+        if isDigit(var):
+            if(int(var) > 1000000):
+                if(mid_freq == 0):
+                    mid_freq = int(var)
+            max_freq = int(var)
+
+
+def set_gov(gov):
+    global cpus
+    for var in cpus:
+        gov_f = os.path.join(var,"cpufreq/scaling_governor")
+        #print(gov_f)
+        subprocess.run( "echo %s | sudo tee  %s" %(gov,gov_f),shell=True)
+    
+def set_performance(scale):
+    global cpus
+    global mid_freq
+    global max_freq
+
+    freq = mid_freq
+    if scale =="mid":
+        freq = mid_freq
+    elif scale =="max":
+        freq = max_freq
+  
+    for var in cpus:
+        _f = os.path.join(var,"cpufreq/scaling_max_freq")
+        #print(_f)
+        subprocess.run( "echo %s | sudo tee  %s" %(freq,_f),shell=True)
+  
+
+def fan_loop():
+    while True:
+        temps = glob.glob('/sys/class/thermal/thermal_zone[0-9]/')
+        temps.sort()
+        for var in temps:
+            _f = os.path.join(var,"temp")
+            #print( open(_f).read().strip("\n") )
+            _t = open(_f).read().strip("\n")
+            if isDigit(_t):
+                if int(_t) > MAX_TEMP:
+                    fan_on()
+                    fan_off()
+        
+        time.sleep(5)
+
+
+def main(argv):
+    global cpus
+    scale = 'mid'
+    gov   = 'powersave'
+    try:
+        opts, args = getopt.getopt(argv,"hs:g:",["scale=","governor="])
+    except getopt.GetoptError:
+        print ('test.py -s <scale> -g <governor>')
+        sys.exit(2)
+    for opt, arg in opts:
+        if opt == '-h':
+            print ('test.py -s <scale>')
+            sys.exit()
+        elif opt in ("-s", "--scale"):
+            scale = arg
+        elif opt in ("-g","--governor"):
+            gov = arg
+
+    print ('Scale is ', scale,"Gov is ",gov)
+
+    init_fan_gpio()
+    cpu_infos()
+    set_gov(gov)
+    set_performance(scale)
+    fan_loop()
+
+
+if __name__ == "__main__":
+   main(sys.argv[1:])
+