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sigma
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071fb123fe
170
sigma.py
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170
sigma.py
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import serial
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import time
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# === CONFIG ===
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SERIAL_PORT = "/dev/ttyS0"
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BAUDRATE = 9600
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EMQX_HOST = "v92023ed.ala.eu-central-1.emqxsl.com"
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EMQX_PORT = 8883
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CA_FILENAME = "ca.crt"
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CA_LOCAL_PATH = "/home/sigma/emqxsl-ca.crt"
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MQTT_TOPIC = "test/topic"
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MQTT_CLIENT_ID = "rpi_sim7080_test"
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#MQTT_MSG = "Hello over secure MQTT"
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MQTT_QOS = 1
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SSL_CTX_ID = 1
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MQTT_CONN_ID = 0
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NTP_SERVER = "0.cz.pool.ntp.org"
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# additional utilities
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def send_at(cmd, wait_for="OK", timeout=2):
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print(f"> {cmd}")
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ser.write((cmd + "\r\n").encode())
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time.sleep(timeout)
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response = ser.read_all().decode()
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print(response)
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return wait_for in response
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def wait_for_ready():
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while True:
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line = ser.readline().decode()
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print(line.strip())
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break
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# init serial comunication
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ser = serial.Serial(SERIAL_PORT, BAUDRATE, timeout=1)
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time.sleep(2)
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ser.reset_input_buffer()
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wait_for_ready()
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# OLD Chat-GPT + edits code
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# === 1. Basic Setup ===
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#send_at("ATE0")
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#send_at("AT+CPIN?") # Check SIM
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#send_at("AT+CSQ") # Signal strength
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#send_at("AT+CEREG=1")
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#send_at("AT+CGDCONT=1,\"IP\",\"m2m.public.cz\"")
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#send_at("AT+CGACT=1,1")
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#send_at("AT+CGPADDR=1")
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#send_at("AT+CFSINIT")
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#send_at("AT+CNACT=0,1")
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#
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## === 2. Upload CA Certificate ===
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#def upload_cert():
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# with open(CA_LOCAL_PATH, "rb") as f:
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# data = f.read()
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# cert_len = len(data)
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#
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# # Allocate file
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# send_at(f'AT+CFSWFILE=0,"{CA_FILENAME}",0,{cert_len},10000', "DOWNLOAD")
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# ser.write(data)
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# time.sleep(1)
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# print(ser.read_all().decode())
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#
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#upload_cert()
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#
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## === 3. Configure SSL Context ===
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#send_at(f"AT+CSSLCFG=\"sslversion\",1,3") # TLS 1.2
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#send_at(f"AT+CASSLCFG=1,\"cacert\",\"{CA_FILENAME}\"")
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## send_at(f"AT+CSSLCFG=\"\",{SSL_CTX_ID},1") # Server auth only
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#send_at(f"AT+CSSLCFG=\"ignorertctime\",1,1")
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#send_at(f"AT+CSSLCFG=\"sni\",1,1")
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#
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## === 4. Configure MQTT ===
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#send_at(f"AT+SMCONF=\"URL\",\"{EMQX_HOST}\",{EMQX_PORT}")
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#send_at(f"AT+SMCONF=\"KEEPTIME\",60")
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#send_at(f"AT+SMCONF=\"CLIENTID\",\"{MQTT_CLIENT_ID}\"")
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#send_at(f"AT+SMSSL=1,\"{CA_FILENAME}\",\"{CA_FILENAME}\"")
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#send_at("AT+SMCONF=\"CLENASS\",1")
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#
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## === 5. Connect to MQTT Broker ===
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#if not send_at("AT+SMCONN", "OK", timeout=10):
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# print("MQTT connection failed")
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# exit()
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#
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## === 6. Publish Message ===
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#msg_len = len(MQTT_MSG)
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#send_at(f"AT+SMPUB=\"{MQTT_TOPIC}\",{msg_len},{MQTT_QOS}", ">", timeout=1)
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#ser.write(MQTT_MSG.encode() + b"\x1A") # End with Ctrl+Z
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#time.sleep(2)
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#print(ser.read_all().decode())
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# pin init
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send_at("ATE0")
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send_at("AT")
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# reboot and wait
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send_at("AT+CREBOOT")
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print("rebooting... please wait")
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failed = True
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for i in range(1,10):
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if send_at("ATE0", "OK", timeout=3):
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failed = False
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break
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send_at("AT")
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if failed:
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print("failed to reboot")
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exit()
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# set as verbose
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send_at("AT+CMEE=2")
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# sim and rf status check
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send_at("AT+CPIN?")
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send_at("AT+CSQ")
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# manual APN conf
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send_at("AT+CFUN=0")
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send_at("AT+CGDCONT=1,\"IP\",\"m2m.public.cz\"")
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send_at("AT+CFUN=1")
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send_at("AT+CGATT?")
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send_at("AT+CGNAPN")
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send_at("AT+CNCFG=0,1,\"m2m.public.cz\"")
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# APN check
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send_at("AT+CGNAPN")
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# activate apn/pdp
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send_at("AT+CNACT=0,1")
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send_at("AT+CNACT?")
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# synch UTC
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send_at(f'AT+CNTP="{NTP_SERVER}",2,0,2')
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time.sleep(12)
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send_at("AT+CNTP")
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send_at("AT+CCLK?")
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# file system init
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send_at("AT+CFSINIT")
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# upload ca certificate
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with open(CA_LOCAL_PATH, "rb") as f:
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data = f.read()
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cert_len = len(data)
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send_at(f'AT+CFSWFILE=1,"{CA_FILENAME}",0,{cert_len},10000', "DOWNLOAD")
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time.sleep(1)
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print(ser.read_all().decode())
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ser.write(data)
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send_at("AT+CFSTERM")
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# setup mqtt with ssl
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send_at(f'AT+SMCONF="URL","{EMQX_HOST}","{EMQX_PORT}"')
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send_at("AT+SMCONF=\"KEEPTIME\",60")
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send_at("AT+SMCONF=\"CLEANSS\",1")
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send_at(f'AT+SMCONF="CLIENTID","{MQTT_CLIENT_ID}"')
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send_at('AT+SMCONF="QOS",1')
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send_at("AT+SMCONF?")
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# set tls version to 1.2, ignore rtc time and set cipher. then check it
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send_at('AT+CSSLCFG="sslversion",1,3')
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send_at('AT+CSSLCFG="IGNORERTCTIME",1,1')
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send_at('AT+CSSLCFG=“CIPHERSUITE”,1,0,0x0035')
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send_at('AT+CSSLCFG=“CIPHERSUITE”,1,1,0x002F')
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send_at("AT+CSSLCFG?")
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time.sleep(10)
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# convert and use uploaded certificate
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send_at(f'AT+CSSLCFG="CONVERT",2,"{CA_FILENAME}"')
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send_at(f'AT+SMSSL=2,"{CA_FILENAME}",""') # no idea how to CHOOSE the certificte
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send_at("AT+SMSSL?")
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# try to connect
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if not send_at("AT+SMCONN", "OK", timeout=20):
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print(" - FAILED to connect")
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# disconnect/clean-up
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send_at("AT+SMDISC")
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send_at("AT+CNACT=0,0")
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ser.close()
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36
theone.at
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36
theone.at
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#reboot
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ATE0
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AT
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AT+CREBOOT
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ATE0
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AT
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ATE0
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#set verbose
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AT+CMEE=2
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#sim and rf checks
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AT+CPIN?
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AT+CSQ
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#fs init
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AT+CFSINIT
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#upload ca cert
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cacert
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#convert ca cert and end uploading
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AT+CSSLCFG="CONVERT",2,ca.pem
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AT+CFSTERM
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#manual APN conf
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AT+CFUN=0
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AT+CGDCONT=$pdpcid$,"IP",$apn_server$
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AT+CFUN=1
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AT+CGATT?
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AT+CGNAPN
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AT+CNCFG=$pdpcid$,1,$apn_server$
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#APN check
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AT+CGNAPN
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#activate APN/PDP
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AT+CNACT=0,1
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AT+CNACT?
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#synch UTC
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AT+CNTP=$ntp_server$,2,0,2
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s 15
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AT+CNTP
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AT+CCLK?
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84
theone.py
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84
theone.py
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import serial
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import time
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import re
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from colorama import Fore, Style
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SERIAL_PORT = "/dev/ttyS0"
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BAUDRATE = 9600
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variables = {
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'emqx_host': "v92023ed.ala.eu-central-1.emqxsl.com",
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'emqx_port': 8883,
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'mqtt_client_id': "rpi_sim7080_test",
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'ca_local_path': "/home/sigma/emqxsl-ca.crt",
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'ca_filename': 'ca.pem',
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'ntp_server': '0.cz.pool.ntp.org',
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'pdpcid': 0
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}
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def send_at(cmd, timeout=2):
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print(f"{Fore.MAGENTA} {cmd}{Style.RESET_ALL}", end="")
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ser.write((cmd + "\r\n").encode())
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time.sleep(timeout)
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response = ser.read_all().decode().strip().replace("\n\n", "\n")
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if "OK" == response:
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print(f" {Fore.GREEN}{response}{Style.RESET_ALL}")
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return True
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elif "ERROR" in response:
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print(f"\n {Fore.RED}{response}{Style.RESET_ALL}")
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return False
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elif response == "":
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print()
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else:
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print(f"\n {Fore.CYAN}{response}{Style.RESET_ALL}")
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return False
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def wait_for_ready():
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while True:
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line = ser.readline().decode()
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print(line.strip())
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break
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def upload_ca_cert():
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ca_local_path = variables.get('ca_local_path')
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with open(ca_local_path, "rb") as f:
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data = f.read()
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cert_len = len(data)
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ca_filename = variables.get('ca_filename')
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send_at(f'AT+CFSWFILE=3,"{ca_filename}",0,{cert_len},10000', "DOWNLOAD")
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time.sleep(1)
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print(ser.read_all().decode())
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ser.write(data)
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def replace_vars(text):
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if isinstance(text, bytes):
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text = text.decode()
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def replace_var(match):
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var_name = match.group(1)
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return variables.get(var_name, match.group(0))
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return re.sub(r'\$(.*?)\$', replace_var, text)
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ser = serial.Serial(SERIAL_PORT, BAUDRATE, timeout=1)
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time.sleep(2)
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ser.reset_input_buffer()
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wait_for_ready()
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with open("theone.at", "rb") as f:
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data = f.readlines()
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for raw_line in data:
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line = raw_line.decode("utf-8").strip()
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if line.startswith("#"):
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print(Style.BRIGHT + line[1:] + Style.RESET_ALL)
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elif line.startswith("s"):
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match = re.search(r'\d+', line)
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if match:
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sleep_time = int(match.group())
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print(f"Sleeping for {sleep_time} seconds...")
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time.sleep(sleep_time)
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elif line == "cacert":
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upload_ca_cert()
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else:
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send_at(replace_vars(line,))
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