Frequently Asked IoT Module Questions

For the ESP32-C3 module, the flashSPI includes SPICS, SPICLK, SPID, SPIQ, SPIHD, and SPIWD. In a typical SPI configuration, only 4 of these interfaces are used. What are SPIHD and SPIWP used for?

Time2023-09-18

SPIWP and SPIHD are used as a 4-bit parallel SPI bus to access external Flash or SRAM, typically for attaching external FLASH or SRAM modules.

28.What is the difference between GNSS and GPS?

Time2023-10-09

GNSS stands for Global Navigation Satellite System, which includes satellite systems such as GPS, BeiDou, Galileo, and others. GPS, on the other hand, refers to the Global Positioning System developed through collaboration between the National Aeronautics and Space Administration (NASA) and the Department of Defense (DOD) of the United States.

What is Web networking?

Time2023-10-09

Similar to configuring a router. In our module, embed a webpage where users can input information about available networks. Then, the module creates a hotspot. In this scenario, users connect their computer or phone to the module's hotspot. Next, they enter the module's IP address in a web browser, typically 192.168.4.1.

From there, they can input the information about the available network again to achieve Web networking.

Which network configuration method has the lowest cost and is the most stable?

Time2023-10-09

Regardless of whether it is AP networking, Bluetooth networking, or Smartconfig networking; corresponding mini-programs or apps need to be developed. Considering cost and stability, it is recommended for users to use Web networking.

Using IDF 4.4, to reduce power consumption, an external 32.768kHz crystal oscillator is connected. However, it is not detected. What could be the issue?

Time2023-10-09

1. When the module boots up, if an external 32.768kHz crystal oscillator is connected, the boot log will display relevant information. Please check if there are any prints.

2. Ensure that the configuration option is enabled: Component config -> ESP32-specific -> RTC clock source -> External 32kHz crystal.

How to remove the output log timestamps in the MS11SF1 module?

Time2023-10-09

There is currently no configurable option to remove this.

You can either modify the macros like ESP_LOG_LEVEL and related ones in esp_log.h manually.

The Bluetooth firmware upgrade speed of MS11SF11 is slow. Is there a way to improve it?

Time2023-10-09

1. The reference single packet transmission length in the application layer is set to 490, as demonstrated in the ble_throughput example (https://github.com/espressif/esp-idf/tr...throughput). This facilitates sending out two packets at the Link Layer.

Update connection parameters and negotiate the smallest possible connection interval. The minimum connection interval for MS11SF11 can be set to 6, but some phones might not support such a small connection interval."

Enabled WiFi and BLE functionalities in the Arduino IDE, but the module has only 4MB of FLASH, indicating insufficient storage. Is there a solution to this?

Time2023-10-09

You can try selecting 'Partition Scheme -> Huge APP' in the tools menu.