chore(CI+doc): master renamed main + doc minor update

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: "CI"
 
 on:
   push:
-    branches: [ master ]
+    branches: [ main ]
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
   schedule:
     - cron: '35 20 * * 5'
 

README.md

@@ -13,8 +13,8 @@
 This project aim at decoding WSPR signals using an RTL device, usually connected to a Raspberry Pi.
 To install and use your dongle on a Raspberry Pi with a Rasberian OS:
 
-```
-sudo apt-get -y install build-essential clang cmake libfftw3-dev libusb-1.0-0-dev librtlsdr-dev libcurl4-gnutls-dev
+```bash
+sudo apt-get -y install build-essential clang cmake libfftw3-dev libusb-1.0-0-dev librtlsdr-dev libcurl4-gnutls-dev ntp
 git clone https://github.com/Guenael/rtlsdr-wsprd
 cd rtlsdr-wsprd
 make
@@ -31,17 +31,16 @@ This application written in C does:
 - A time alignment (2 mins, required NTPd to run on the OS)
 - Start the reception using the RTL lib
 - Decimate the IQ data (2.4Msps to 375 sps)
-- Decode WSPR signal
-- Push the spots on WSPRnet
+- Decode WSPR signals
+- Push any spots on WSPRnet
 - Repeat, again and again...
 
-
 ## Installation
 
   1. Install a Linux compatible distro on your device (ex. Raspbian for RaspberryPi)
   1. Install dependencies & useful tools (for example, NTP for time synchronization). Example with a Debian based like Raspbian:
      ```
-     sudo apt-get -y install build-essential clang cmake libfftw3-dev libusb-1.0-0-dev librtlsdr-dev libcurl4-gnutls-dev
+     sudo apt-get -y install build-essential clang cmake libfftw3-dev libusb-1.0-0-dev librtlsdr-dev libcurl4-gnutls-dev ntp
      ```
   1. Clone this repository:
      ```
@@ -69,7 +68,6 @@ This application written in C does:
   - Remove unused modules (for example, /etc/modules: #snd-bcm2835)
   - Use an enclosure, and ground it
 
-
 ## Crystal stability
 
 Most of RTL dongles use a cheap crystal, and frequency drift can effect the decoding & performance. The use of no-name RTL dongle for VHF/UHF bands usually require crystal modification, for a better one. External clock could be also used, like GPSDO or rubidium reference clock, aligned on 28.8MHz.