Introduction to EC200U/A Evaluation Board

Supported Module List

Feature List

Basic Overview

The QuecPython_EC200U/A C4-P01 evaluation board is a compact and portable board designed specifically for QuecPython.

The main equipped modules are the EC200U/A series LTE Cat 1/LTE Cat 4 wireless communication modules.

The evaluation board has a USB Type-C interface, making it convenient for development. Developers only need a USB Type-C cable to easily use the evaluation board.

Additionally, the evaluation board is compatible with the expansion board of Raspberry Pi Zero, which can be directly used on the evaluation board.

Evaluation Board Resources

Function Description

The main component and interface placement of the evaluation board is shown in the following figure:

img

Evaluation board dimensions:

img

The main pin placement of the evaluation board is shown in the following figure:

img

Tip

The function multiplexing pins beginning with A/U in the figure indicate the functional difference of EC200A and EC200U series modules, that is, the function multiplexing pins beginning with U will take effect only when the module is EC200U. The function multiplexing pins starting with A takes effect only when the module is EC200A.

For more information about the evaluation board, please visit https://python.quectel.com/en/resource-download?cid=252.

Evaluation Board Configuration

The detailed assignment of the peripheral interfaces on the evaluation board is as follows:

No. Name Model Silkscreen Comment
1 USB Type-C Interface - - -
2 SIM Card Slot 1 SMN-315-ARP7 SIM1 Nano-SIM
3 SIM Card Slot 2 MUP-C7809-1 SIM2 -
4 SD Card Slot TF-101A-P3 SD Before using the SD card, enable SD to provide power to the SD card in the 10-Pin Header.
5 USB Power Supply Switch - USB_ON/OFF When the switch is normally closed, Type-C supplies power to the module and evaluation board, and USB can be connected normally. When the USB switch is normally open, Type-C supplies power only to the evaluation board. In this case, the module is not powered.
6 MIPI Interface - MIPI_DSI When the main module is EC200U-XX, it supports MIPI LCD and is fully compatible with Raspberry Pi peripherals.
7 Camera Interface - - The evaluation board supports customized SPI cameras with a maximum of 300,000 pixels.
8 Matrix Keyboard Interface - KO&KI The matrix keyboard function is reserved. Users can customize the soldering or connection of the keyboard keys. No matrix keyboard on the board by default.
9 MIC&SPK Interface AW8733A +MIC-/-SPK+ -
10 40-Pin Header - - Onboard 40-Pin header; For details, see the above figure and table.
11 10-Pin Header - - Onboard 10-Pin header; For details, see the above figure and table.
12 ADC Interface - ADC0_IN/ADC1_IN ADC testing interface
13 PWK Botton - PWK Turn-on button
14 RST Button - RST Reset button
15 BOOT Button - BOOT Firmware burning button
16 Antenna Interfaces - LTE
DIV/WIFI/BT
GNSS
LTE antenna connector
DIV/Wi-Fi/Bluetooth antenna connector
GNSS antenna connector

The evaluation board has 5 functional indication LEDs, as follows:

  • P01: Module Pin 1, default as EC200A-XX PWM0.
  • P05: Module Pin 5, NET_MODE indication LED.
  • SCK1: SIM1 detection indication LED, lights up when SIM1 is inserted.
  • SCK2: SIM2 detection indication LED, lights up when SIM2 is inserted. Default connection to Pin 128. EC200A-XX does not have SIM2, this LED can be ignored.
  • PWR: Power indication LED.

The positions of the above indication LEDs refer to the silkscreen on the top of the evaluation board mentioned in the previous text (the side where the module is located is the top).

Evaluation Board Interfaces

This evaluation board provides 40 pins compatible with Raspberry Pi, as well as 10 pins with enabling function. The functions of the evaluation board are described as follows:

Pin Assignment of 10-Pin Header

Header No. Silkscreen Function
10-Pin 1 PWK_AUTO POWERKEY Auto turn on
10-Pin 2 PWK_AUTO GND Auto turn on
10-Pin 3 VDD_EXT 1.8 V Provide power externally when connected and test power consumption when disconnected
10-Pin 4 VDD_EXT VDD_EXT Provide power externally when connected and test power consumption when disconnected
10-Pin 5 MODULE_EN 3.8 V Connect DCDC to power the module
10-Pin 6 MODULE_EN 3.8 V Connect DCDC to power the module
10-Pin 7 SD_EN SD_EN Enable SD power supply
10-Pin 8 SD_EN 3.3 V Enable SD power supply
10-Pin 9 GNSS_EN 3.3 V Enable GNSS active power supply
10-Pin 10 GNSS_EN GNSS_EN Enable GNSS active power supply

When testing power consumption, make sure to switch off the USB power supply switch (USB_ON/OFF) on the back of the evaluation board.

Singular-pin Assignment of 40-Pin Header

Header No. Name Function Multiplexing Function
40-Pin 1 3V3 - 3.3 V output
40-Pin 3 SDA I2C0_SDA/GPIO35 I2C0 serial data/General-purpose input/output
40-Pin 5 SCL I2C0_SCL I2C0 serial clock
40-Pin 7 P06 GPIO46/A_PWM2 General-purpose input/output/PWM2 output (When the module is EC200A)
40-Pin 9 GND - Ground
40-Pin 11 P64 GPIO19 General-purpose input/output
40-Pin 13 P136 GPIO7 General-purpose input/output
40-Pin 15 P03 GPIO9 General-purpose input/output
40-Pin 17 3V3 - 3.3 V output
40-Pin 19 MO1 SPI1_MOSI/GPIO3 SPI1 master-out slave-in/General-purpose input/output
40-Pin 21 MI1 SPI1_MISO/GPIO4 SPI1 master-in slave-out/General-purpose input/output
40-Pin 23 CLK1 SPI1_CLK/GPIO1 SPI1 clock/General-purpose input/output
40-Pin 25 GND - Ground
40-Pin 27 P63 GPIO44/A_UART1_TXD General-purpose input/output/UART1 transmit (When the module is EC200A)
40-Pin 29 P01 GPIO28/A_PWM0 General-purpose input/output/PWM0 output (When the module is EC200A)
40-Pin 31 P02 GPIO29 General-purpose input/output
40-Pin 33 P04 GPIO30/A_PWM1 General-purpose input/output/PWM1 output (When the module is EC200A)
40-Pin 35 P39 GPIO13/A_SPI0_MISO General-purpose input/output/SPI0 master-in slave-out (When the module is EC200A)
40-Pin 37 P134 GPIO37 General-purpose input/output
40-Pin 39 GND Ground

Double-pin Assignment of 40-Pin Header

Header No. Name Function Multiplexing Function
40-Pin 2 5V - 5 V output
40-Pin 4 5V - 5 V output
40-Pin 6 GND - Ground
40-Pin 8 TXD UART2_TXD UART2 transmit
40-Pin 10 RXD UART2_RXD UART2 receive
40-Pin 12 P37 GPIO11/A_SPI0_CS General-purpose input/output/SPI0 chip select (When the module is EC200A)
40-Pin 14 GND - Ground
40-Pin 16 P133 GPIO8 General-purpose input/output
40-Pin 18 P65 GPIO18 General-purpose input/output
40-Pin 20 GND - Ground
40-Pin 22 P127 GPIO22 General-purpose input/output
40-Pin 24 CS1 SPI1_CS/GPIO2 SPI1 chip select/General-purpose input/output
40-Pin 26 P139 GPIO20 General-purpose input/output
40-Pin 28 P66 GPIO45/A_UART1_RXD General-purpose input/output/UART1 receive (When the module is EC200A)
40-Pin 30 GND - Ground
40-Pin 32 P135 GPIO6/U_PWM0 General-purpose input/output/PWM0 output (When the module is EC200U)
40-Pin 34 GND - Ground
40-Pin 36 P62 GPIO43 General-purpose input/output
40-Pin 38 P38 GPIO12/A_SPI0_MOSI General-purpose input/output/SPI0 master-out slave-in (When the module is EC200A)
40-Pin 40 P40 GPIO10/A_SPI0_CLK General-purpose input/output/SPI0 clock (When the module is EC200A)
  • Quick Start Guide

    Hardware Preparation

    • Step 1: Required Items

      • Development board
      • USB-C cable (A-to-C)
      • Windows 10 PC
      • Nano-SIM card
      • 4G antenna
    • Step 2: Antenna & SIM Installation

      • Attach the provided antenna to the MAIN antenna port.
      • Insert the SIM card into the Nano-SIM slot.
    • Step 3: Connect the Board

      • Power the board via USB-C.
    • Step 4: Power On

      • Press and hold PWK until the power indicator light on the mainboard (labeled as POW) lights up.
      • If you short-circuited PWK_ON, there's no need to press PWK; the board will power on automatically.

      If the PWR indicator is constantly on, the EVB is successfully turned on.

    Driver Installation

    1. Download the QuecPython USB Driver from QuecPython Official Drivers.
    2. Extract and run setup.exe or setup.bat.
    3. Verify installation in Device Manager (look for "Quectel USB" ports). Ignore unrelated devices like "Mobile ECM Network Adapter."

    Tool Installation

    1. QPYcom: Download from QuecPython Tools. Extract and use directly.
    2. VSCode Plugin: Search for "QuecPython" in the Visual Studio Code marketplace.

    Firmware Burning

    1. Firmware Download: Get the latest QuecPython firmware from QuecPython Firmware Page.

    2. Burning Steps:

      • Open QPYcom, select the USB REPL port, and create a new project.

      • Choose the .bin firmware file

      • Set mode to "Download FW" and click Download.

      • For BG95, enable DM serial port before burning.

    download_firmware1

    download_firmware2

    download_firmware3

    REPL Debugging

    1. Connect via QPYcom and open the REPL interface.
    2. Test with print("Hello World!").

    hello

    First Script Development

    Writing a Script

    Create helloworld.py:

    print("Hello World!")
    

    File Transfer

    • Method 1: Drag-and-drop files via QPYcom’s GUI.

    download_script1

    • Method 2: Use the "Download Script" feature in QPYcom.

    download_script1

    Running Scripts

    Execute via REPL:

    import example
    example.exec("/usr/helloworld.py")
    

    Stopping Program Execution

    How to stop a running program. The following methods are provided according to the type of the running script file:

    | Is the program name main.py? | Does the program contain a dead loop? | Does the program use multiple threads? | Stopping Steps |
    | :--------------------------: | :-----------------------------------: | :------------------------------------: | ------------------------------------------------------------ |
    | ✓ | ✓ | ✓ | (1) Press Ctrl + A to enter RAW mode
    (2) Press Ctrl + D to restart the QuePython virtual machine
    (3) Press Ctrl + B to return to the normal interactive mode
    (4) If the above methods fail, re-flash the firmware |
    | ✓ | ✓ | ✗ | (1) Press Ctrl + C to interrupt the program execution
    (2) If the above method fails, re-flash the firmware |
    | ✓ | ✗ | ✓ | (1) Press Ctrl + A to enter RAW mode
    (2) Press Ctrl + D to restart the QuePython virtual machine
    (3) Press Ctrl + B to return to the normal interactive mode
    (4) If the above methods fail, wait for the program to finish running |
    | ✓ | ✗ | ✗ | (1) Press Ctrl + C to interrupt the program execution
    (2) If the above method fails, re-flash the firmware |
    | ✗ | ✓ | ✓ | (1) Press Ctrl + D to restart the QuePython virtual machine
    (2) If the above method fails, directly restart the module |
    | ✗ | ✓ | ✗ | (1) Press Ctrl + D to restart the QuePython virtual machine
    (2) If the above method fails, directly restart the module |
    | ✗ | ✗ | ✓ | (1) Press Ctrl + C to interrupt the program execution
    (2) If the above method fails, re-flash the firmware or directly restart the module |
    | ✗ | ✗ | ✗ | (1) Press Ctrl + C to interrupt the program execution
    (2) If the above method fails, re-flash the firmware or directly restart the module |

    Low Power Consumption Testing Guide

    TheEC200X module supports multiple operating modes, each with distinct power consumption characteristics. The common operating modes are as follows:

    ACTIVE: The module is engaged in LTE data transmission, GSM calls, or executing RTOS logic. Power consumption varies significantly depending on specific tasks and network communication standards, as both CPU power usage and RF power levels differ across scenarios.

    IDLE: The module is in an idle state with hardware fully powered and RTOS running, but no active threads. It resumes operation immediately upon task initiation or incoming network activity. ECX00U series modules reduce clock frequency in IDLE mode, entering a light sleep state (disabling high-speed clocks while keeping the CPU active).

    Sleep: Sleep mode requires the module to be idle with autosleep enabled. In this mode, RTOS pauses, clock frequency slows, and peripheral controllers (UART, SPI, etc.) are powered down, retaining only essential interrupt controllers to minimize power consumption.

    PSM: PSM (Power Saving Mode) is a 3GPP-defined low-power mode where the module periodically wakes to perform tasks and remains in PSM sleep otherwise. During PSM sleep, behavior and power consumption resemble a powered-off state.

    Power Off: The module is fully powered down, with baseband chips and peripheral controllers disabled (PMIC remains active). It can be awakened via Powerkey or RTC alarm.

    | Module Model | ECX00U |
    | :------------------- | :------- |
    | IDLE (LTE FDD@64ms) | 12.34 mA |
    | SLEEP (LTE FDD@64ms) | 2.05 mA |
    | SLEEP (CFUN0) | 1.29 mA |
    | Power Off | 40 μA |

    Test Preparation

    • Step 1: Hardware Setup

      Prepare the following components before starting:

      1. Development Board
      2. USB Cable (USB-A to USB-TypeC)
      3. PC (Windows 10)
      4. SIM Card
      5. 4G Antenna
      6. Power Monitor Mini
    • Step 2: Antenna & SIM Card Installation

      Install the provided antenna into the MAIN antenna socket and insert the SIM card into the development board's SIM slot.

    • Step 3: Board Connection

      Connect the development board's Type-C port to the PC using a USB Type-C cable. Attach the power monitor's positive lead to MODULE_EN's Vbat (refer to BG95 User Guide) and the negative lead to the module's GND. Connection diagram:

      Important!
      Remove all jumper caps during measurements to avoid external interference.

    Power Consumption Measurement

    Power-Off Current

    With the board connected via USB Type-C, power off the module by disabling USB_VBus (set USB switch to "off" on the board's rear). Measure the current while the module is inactive (output pins pulled low/floating). Average current remains stable at microampere levels.

    Power-off current measurement

    Idle Current

    After power-off measurement, press and hold Powerkey to boot the module (default: IDLE mode). The module remains idle with RTOS running but no active threads, ready to resume instantly for tasks or calls.

    Idle current measurement

    Sleep Current

    With autosleep enabled during idle, the module enters sleep mode by deactivating non-essential IP cores (peripherals/interrupts) and reducing clock frequency.

    1. Re-enable USB_VBus.

    2. Open QPYcom Tool and execute:

      import pm
      pm.autosleep(1)  # Enable autosleep
      
      Sleep current waveform
    3. Disable USB_VBus again (switch to "off").
      API Reference | Details

    4. Sleep current shows periodic spikes:

      Sleep current waveform

    Notes: