root@tubzpi:~# journalctl -u fan
-- Journal begins at Fri 2023-05-12 01:25:01 BST, ends at Sat 2023-05-13 16:20:5 3 BST. --
May 12 10:52:00 tubzpi.xyz systemd[1]: Started Custom fan script.
May 12 10:52:01 tubzpi.xyz fan.py[167896]: 34.9c: <40 : choosing fan reg 0x7
May 12 10:52:05 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:09 tubzpi.xyz fan.py[167896]: 34.9c: <40 : choosing fan reg 0x7
May 12 10:52:13 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:17 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:21 tubzpi.xyz fan.py[167896]: 34.9c: <40 : choosing fan reg 0x7
May 12 10:52:25 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:29 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:33 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:37 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:41 tubzpi.xyz fan.py[167896]: 34.3c: <40 : choosing fan reg 0x7
May 12 10:52:45 tubzpi.xyz fan.py[167896]: 34.9c: <40 : choosing fan reg 0x7
May 12 10:52:45 tubzpi.xyz fan.py[167896]: Traceback (most recent call last):
May 12 10:52:45 tubzpi.xyz fan.py[167896]: File "/root/fan/fan.py", line 44, i n setrgb
May 12 10:52:45 tubzpi.xyz fan.py[167896]: bus.write_byte_data(addr,0x00,0xf f)
May 12 10:52:45 tubzpi.xyz fan.py[167896]: OSError: [Errno 121] Remote I/O error
May 12 10:52:45 tubzpi.xyz fan.py[167896]: During handling of the above exceptio n, another exception occurred:
May 12 10:52:45 tubzpi.xyz fan.py[167896]: Traceback (most recent call last):
May 12 10:52:45 tubzpi.xyz fan.py[167896]: File "/root/fan/fan.py", line 115, in <module>
May 12 10:52:45 tubzpi.xyz fan.py[167896]: setrgb(rgb[0],rgb[1],rgb[2],rgb[3 ])
May 12 10:52:45 tubzpi.xyz fan.py[167896]: File "/root/fan/fan.py", line 55, i n setrgb
May 12 10:52:45 tubzpi.xyz fan.py[167896]: print("setrgb [0]:" + exc_tuple[0 ] + " [1]:" + exc_tuple[1] + " [2]:" + exc_tuple[2])
May 12 10:52:45 tubzpi.xyz fan.py[167896]: TypeError: can only concatenate str ( not "type") to str
May 12 10:52:45 tubzpi.xyz systemd[1]: fan.service: Main process exited, code=ex ited, status=1/FAILURE
May 12 10:52:45 tubzpi.xyz systemd[1]: fan.service: Failed with result 'exit-cod e'.
Can you print the content of fan.py or send a link? There seems to be a bug inside, probably due to a changed API when it tries to get the rgb for >35 °C or so.
1 Like
Sorry for the late reply,
import smbus
import time
import os
import sys
from datetime import datetime
from array import *
def setfanspeed(oVal):
try:
bus.write_byte_data(addr, fan_reg, oVal)
except:
exc_tuple = sys.exc_info()
print("setfanspeed [0]:" + exc_tuple[0] + " [1]:" + exc_tuple[1] + " [2]:" + exc_tuple[2])
def setRGBEffect(effect):
try:
if effect >= 0 and effect <= 4:
bus.write_byte_data(addr, rgb_effect_reg, effect&0xff)
except:
exc_tuple = sys.exc_info()
print("setRGBEffect [0]:" + exc_tuple[0] + " [1]:" + exc_tuple[1] + " [2]:" + exc_tuple[2])
def setRGBSpeed(speed):
try:
if speed >= 1 and speed <= 3:
bus.write_byte_data(addr, rgb_speed_reg, speed&0xff)
except:
exc_tuple = sys.exc_info()
print("setRGBSpeed [0]:" + exc_tuple[0] + " [1]:" + exc_tuple[1] + " [2]:" + exc_tuple[2])
def setRGBColor(color):
try:
if color >= 0 and color <= 6:
bus.write_byte_data(addr, rgb_color_reg, color&0xff)
except:
exc_tuple = sys.exc_info()
print("setRGBColor [0]:" + exc_tuple[0] + " [1]:" + exc_tuple[1] + " [2]:" + exc_tuple[2])
def setrgb(num,r,g,b):
try:
#turn lights off first
#bus.write_byte_data(addr, rgb_off_reg, 0x00)
if num >= max_led:
bus.write_byte_data(addr,0x00,0xff)
bus.write_byte_data(addr,0x01,r&0xff)
bus.write_byte_data(addr,0x02,g&0xff)
bus.write_byte_data(addr,0x03,b&0xff)
elif num >= 0:
bus.write_byte_data(addr,0x00,num&0xff)
bus.write_byte_data(addr,0x01,r&0xff)
bus.write_byte_data(addr,0x02,g&0xff)
bus.write_byte_data(addr,0x03,b&0xff)
except:
exc_tuple = sys.exc_info()
print("setrgb [0]:" + exc_tuple[0] + " [1]:" + exc_tuple[1] + " [2]:" + exc_tuple[2])
bus = smbus.SMBus(1)
addr = 0x0d
fan_reg = 0x08
state = 0
temp = 0
level_temp = 0
rgb_effect_reg = 0x04
rgb_speed_reg = 0x05
rgb_color_reg = 0x06
rgb_off_reg = 0x07
max_led = 3
rgb = [0x00, 0x00, 0x00, 0x00]
bus.write_byte_data(addr, rgb_off_reg, 0x00)
time.sleep(1)
setRGBEffect(1)
setRGBSpeed(3)
setRGBColor(4)
while True:
cmd = os.popen('vcgencmd measure_temp').readline()
CPU_TEMP = cmd.replace("temp=","").replace("'C\n","")
temp = float(CPU_TEMP)
if abs(temp - level_temp) >= 1:
if temp <= 40:
level_temp = 40
fan_speed = 0x7
rgb = [max_led, 0x00, 0x00, 0xff]
elif temp <= 45:
level_temp = 0x7
fan_speed = 0x7
rgb = [max_led, 0x1e, 0x90, 0xff]
elif temp <= 47:
level_temp = 47
fan_speed = 0x08
rgb = [max_led, 0x00, 0xbf, 0xff]
elif temp <= 49:
level_temp = 49
fan_speed = 0x06
rgb = [max_led, 0x5f, 0x9e, 0xa0]
elif temp <= 51:
level_temp = 51
fan_speed = 0x09
rgb = [max_led, 0xff, 0xff, 0x00]
elif temp > 51:
level_temp = 52
fan_speed = 0x01
rgb = [max_led, 0xff, 0x00, 0x00]
else:
level_temp = 0
fan_speed = 0x01
rgb = [max_led, 0xff, 0xff, 0xff]
print('Something wrong: choosing fan reg 0x01 instead')
setfanspeed(fan_speed)
print(CPU_TEMP + 'c: <' + str(level_temp) + ' : choosing fan reg ' + str(hex(fan_speed)))
setrgb(rgb[0],rgb[1],rgb[2],rgb[3])
sys.stdout.flush()
time.sleep(4)