✨ LilyGO T-SIM7080G ✨

English | 中文

News

• SIM7080G supports NB-IoT and Cat-M in global frequency bands, but does not support 2G/3G/4G. Please confirm that the SIM card used supports NB-IoT or Cat-M before use.
• The SIM card must be inserted first before starting the SIM7080. If the SIM card is inserted after the SIM7080 is turned on, the modem will not be able to detect the SIM card.

1️⃣ Examples preview

examples 
├─AllFunction                   # Full function test example
├─BLE5_extended_scan            # Official BLE5 Example
├─BLE5_multi_advertising        # Official BLE5 Example
├─BLE5_periodic_advertising     # Official BLE5 Example    
├─BLE5_periodic_sync            # Official BLE5 Example
├─BIGIOT_Gnss_Upload            # Upload positioning coordinates to BIGIOT IOT,Timed wake-up consumes about 1.2mA
├─MinimalCameraExample          # Example of camera use
├─MinimalModemGPSExample        # SIM7080G GPS example
├─MinimalModemNBIOTExample      # SIM7080G NBIOT example
├─MinimalModemPowerSaveMode     # SIM7080G power maintenance example
├─MinimalModemSleepMode         # SIM7080G sleep example
├─MinimalModemUpgrade           # Upgrade SIM7080 built-in firmware
├─MinimalPowersExample          # Example of PMU
├─MinimalPowersCurrentExample   # Example of PMU charge current debug
├─MinimalSDCardExample          # Example of using SDCard
├─ModemMqttPulishExample        # MQTT Pulish Example            
├─ModemMqttsExample             # MQTTS Example    
├─ModemMqttSubscribeExample     # MQTT Subscribe Example     
├─SIM7080G-ATT-NB-IOT-AWS-MQTT  # MQTTS AWS By @bootcampiot
├─SIM7080G-ATT-NB-IOT-HTTP-HTTPS # HTTP/HTTPS  By @bootcampiot
└─SIM7080G-ATT-NB-IOT-SSL-Mosquitto # MQTTS Mosquitto By @bootcampiot

2️⃣ Quick Start

PlatformIO

1. Install VisualStudioCode and Python
2. Search for the PlatformIO plugin in the VisualStudioCode extension and install it.
3. After the installation is complete, you need to restart VisualStudioCode
4. After restarting VisualStudioCode, select File in the upper left corner of VisualStudioCode -> Open Folder -> select the LilyGo-T-SIM7080G directory
5. Click on the platformio.ini file, and in the platformio column, cancel the sample line that needs to be used, please make sure that only one line is valid
6. Click the (✔) symbol in the lower left corner to compile
7. Connect the board to the computer USB
8. Click (→) to upload firmware
9. Click (plug symbol) to monitor serial output

ArduinoIDE

1. Install ArduinoIDE
2. Copy all the folders in the LilyGo-T-SIM7080G/lib directory to <C:\Users\UserName\Documents\Arduino\libraries>. If there is no libraries directory, please create a new one. Please note that you are not copying the lib directory, but copying the folders in the lib directory
3. Open Arduino IDE -> Tools

• Board -> ESP32S3 Dev Module
• USB CDC On Boot -> Enable ## Note that you need to change Enable to Disable when USB is not connected, so USB CDC will not prevent the board from starting
• CPU Frequency -> 240MHz
• USB DFU On Boot -> Disable
• Flash Mode -> QIO 80MHz
• Flash Size -> 16MB(128Mb)
• USB Firmware MSC On Boot -> Disable
• PSRAM -> OPI PSRAM
• Partition Scheme -> 16M Flash(3MB APP/9.9MB FATFS)
• USB Mode -> Hardware CDC and JTAG
• Upload Mode -> UART0/Hardware CDC
• Upload Speed -> 921600

4. Insert USB into the PC and click Upload <If the upload fails, see Tips>

3️⃣ Tips

0. T-SIM7080 has two USB ports, the USB-C port is used to upload sketches and Serial output, and Micro-USB is used for SIM7080G firmware version upgrade
1. ⚠ SIM7080G cannot connect to cellular network and GPS positioning at the same time
2. Board integrated PMU (Power management chip), with short circuit and overload protection. By default,PWRKEYneeds to be pressed for 6 seconds to turn off the board power supply, and pressPWRKEYfor 128 milliseconds to turn on the power supply. If you need to modify the power off pressing time, please refer toMinimalPowersExample
3. If the charging function is required, thePMU TS Pindetection function needs to be turned off. By default, there is no NTC sensor on the board, so the TS Pin detection needs to be disabled before the charging function can be used normally. If theTS Pindetection function is not turned off, the PMU charging indicator will flash after the battery is inserted, and charging will be disabled
4. The board VSYS is the internal 5V boost output of the PMU, which can only be output but not input. Please do not connect an external power supply load greater than 500mA
5. The DC5 power supply voltage can be adjusted, and the maximum output current should not exceed 1A 5.DC1 is the core power supply voltage, and the default output is 3.3V. Please do not adjust the DC1 voltage through software
6. When the sketch cannot be uploaded, please press and hold the BOOT button on the board, and then insert the USB. At this time, you should be able to see the port in the device manager of the computer, and then click Upload Sketch again
7. When the power supply channel of the ESP32S3 is closed incorrectly, please insert USB, and then press and hold the BOOT button of the board, and then press and hold the PWRKEY button. At this time, the board enters the download mode, and the sketch can be uploaded normally
8. If the power supply of the board cannot be turned on when the battery is connected, please check that the mechanical switch beside the USB is turned toON, and then press the board PWR for 2 seconds. At this time, the board should start to work
9. The range of solar input voltage is 4.4~6V. Please select an appropriate solar panel and set the maximum charging current as 500mA
10. If the camera is not connected, all IO ports are available. If the camera is used, the board has only GPIO45 and GPIO46 is idle
11. T-SIM7080G uses Octal SPI PSRAM, so GPIO35~GPIO37 is unavailable. Please do not use these IOs
12. ⚠ Please understand the risks to be faced before changing the voltage of peripherals, otherwise do not try to change the voltage of cameras and other on-board devices, which may cause permanent damage
13. ⚠ Please do not turn off the BLDO1 power supply, otherwise ESP32S3 and SIM7080G cannot communicate normally
14. Please check the Operating Instructions for updating the built-in firmware of the modem. Generally, upgrading the firmware is not recommended
15. The board uses USB as the JTAG upload port. When printing serial port information on USB_CDC_ON_BOOT configuration needs to be turned on. If the port cannot be found when uploading the program or the USB has been used for other functions, the port does not appear. Please enter the upload mode manually.
    1. Connect the board via the USB cable
    2. Press and hold the BOOT button , While still pressing the BOOT button, press RST
    3. Release the RST
    4. Release the BOOT button
    5. Upload sketch

4️⃣ Where to buy:

1. AliExpress
2. LilyGo Store

5️⃣ Pins:

Camera	PWDN	Reset	XCLK	SDA	SCL	VSYNC	HREF	PCLK
GPIO	N/A	18	8	2	1	16	17	12
Camera	D9	D8	D7	D6	D5	D4	D3	D2
GPIO	9	10	11	13	21	48	47	14

• If you do not use a camera, you can freely allocate IO ports here. Assuming you need to allocate I2C, please use the display to call Wire and pass the required IO ports, such as

  int sda = 13;  // You can also use other IO ports
  int scl = 21;  // You can also use other IO ports
  Wire.begin(sda,scl)
  

Modem	PWR	RXD	TXD	RI	DTR
GPIO	41	4	5	3	42

PMU	SDA	SCL	IRQ
GPIO	15	7	6

SDCard	CMD	CLK	DATA
GPIO	39	38	40

Power domain

Modem	Camera	ESP32S3	SDCard	Level conversion
DC3/BLDO2(GPS)	ALDO1/ALDO2/ALDO4	DC1	ALDO3	BLDO1