You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
Copy file name to clipboardExpand all lines: docs/menu_radios.md
+4-4Lines changed: 4 additions & 4 deletions
Display the source diff
Display the rich diff
Original file line number
Diff line number
Diff line change
@@ -14,7 +14,7 @@ ESP-Now is a 2.4GHz protocol that is built into the internal ESP32 microcontroll
14
14
15
15
Additionally, ESP-Now supports point-to-multipoint transmissions. This means a Base can transmit to multiple Rovers simultaneously.
16
16
17
-
ESP-Now is a free radio included in every RTK product, and works well, but it has a few limitations:
17
+
ESP-Now is a free radio included in every RTK product and works well, but it has a few limitations:
18
18
19
19
1. Limited use with Bluetooth SPP. The ESP32 is capable of [simultaneously transmitting](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/coexist.html) ESP-Now and Bluetooth LE, but not classic Bluetooth SPP. Unfortunately, SPP (Serial Port Profile) is the most common method for moving data between a GNSS receiver and the GIS software. Because of this, using ESP-Now while connecting to the RTK product using Bluetooth SPP is not stable. SparkFun RTK products support Bluetooth LE and ESP-Now works flawlessly with Bluetooth LE. There are a few GIS applications that support Bluetooth LE including SW Maps. Another option is to use ESP-Now for the Base-Rover link and a GIS app such as [Vespucci](gis_software.md#vespucci) or [QGIS](gis_software.md#qgis) that can obtain PVT data over WiFi (TCP) rather than use Bluetooth to gather the NMEA data from the RTK device.
20
20
@@ -50,10 +50,10 @@ A serial menu is also available. This menu allows users to enter pairing mode, c
50
50
51
51
All devices must be on the same WiFi channel to communicate over ESP-Now. Option **4 - Current channel** shows the current channel and allows a user to select a new one. Allowable channel numbers are 1 to 14. By default, devices will communicate on Channel 1. A user may select any channel they prefer.
52
52
53
-
**Note:** ESP-Now can operate alongside WiFi but the user should be aware of the channel numbers of the devices. When a device connects to a WiFi network, the ESP-Now channel number may be altered by the WiFi radio so that the RTK device can communicate with the WiFi Access Point.
53
+
**Note:** ESP-Now can operate at the same time as WiFi but the user should be aware of the channel numbers of the devices. When a device connects to a WiFi network, the ESP-Now channel number may be altered by the WiFi radio so that the RTK device can communicate with the WiFi Access Point.
54
54
55
55
Using a single device to communicate corrections to multiple devices (no WiFi involved) is the most common use case for ESP-Now.
56
56
57
-
Using ESP-Now with a single device on WiFi is possible. Take the example of a Base that needs to communicate corrections over ESP-Now and will also be pushing the corrections to a Caster over NTRIP using WiFi: The Base is started, WiFi is activated, and the channel is overwritten to 9 (for example) when the device connects to the Access Point. All rovers in the area who wish to obtain corrections over ESP-Now also need to have their channels set to 9.
57
+
Using WiFi on one of the devices in an ESP-Now network is possible. Take the example of a Base that needs to communicate corrections over ESP-Now and will also be pushing the corrections to a Caster over NTRIP using WiFi: The Base is started, WiFi is activated, and the channel is overwritten to 9 (for example) when the device connects to the Access Point. All rovers in the area who wish to obtain corrections over ESP-Now also need to have their channels set to 9.
58
58
59
-
Using multiple devices on *different* WiFi networks, while attempting to use ESP-Now, is likely impossible because the device's channel numbers will be modified to match the different channels of the Access Points.
59
+
Using multiple devices on *different* WiFi networks, while attempting to use them in an ESP-Now network, is likely impossible because the device's channel numbers will be modified to match the different channels of the Access Points.
0 commit comments