RPi: README.md format one new section

tools/rpi/README.md

@@ -91,7 +91,7 @@ Please check first, if you have Debian 11 (bullseye) 64 bit operating system ins
 
 There are 2 possible solutions to install the RF24 wrapper:
 
- * `1. Solution:`
+**__1. Solution:__**
 ```code
 sudo apt install cmake git python3-dev libboost-python-dev python3-pip python3-rpi.gpio
 
@@ -106,18 +106,19 @@ cd RF24
 rm -rf build Makefile.inc 
 ./configure --driver=SPIDEV
 ```
- # edit `Makefile.inc` with your prefered editor e.g. nano or vi
- - old:
-```code
- CPUFLAGS=-marm -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard
- CFLAGS=-marm -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -Ofast -Wall -pthread
-```
- - new:
-```code
- CPUFLAGS=
- CFLAGS=-Ofast -Wall -pthread
-```
- * continue with 
+> _edit `Makefile.inc` with your prefered editor e.g. nano or vi_
+> 
+> old:
+>```code
+> CPUFLAGS=-marm -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard
+> CFLAGS=-marm -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -Ofast -Wall -pthread
+>```
+> new:
+>```code
+> CPUFLAGS=
+> CFLAGS=-Ofast -Wall -pthread
+>```
+_continue now_ 
 ```code
 make
 sudo make install
@@ -130,7 +131,7 @@ python3 -m pip list #watch for RF24 module - if its there its installed
 ```
 
 
- * `2. Solution:`
+**__2. Solution:__**
 ```code
 sudo apt install git python3-dev libboost-python-dev python3-pip python3-rpi.gpio
 
@@ -139,11 +140,10 @@ cd pyRF24
 python3 -m pip install . -v     # this step takes about 5 minutes on my RPI-4 !
 ```
 
-If you have problems with your radio module from ahoi, 
-e.g.: cannot interpret received data,
-please try to reduce the speed of the radio module!
-Add the following line to your ahoy.yml configuration file in "nrf" section:
-* `spispeed: 600000`
+If you have problems with your radio module from ahoi, e.g.: cannot interpret received data, 
+please try to reduce the speed of your radio module!
+Add the following parameter to your ahoy.yml configuration file in "nrf" section:
+`spispeed: 600000` (0.6 MHz)
 
 
 
@@ -247,7 +247,7 @@ Todo
 - Ability to talk to multiple inverters
 - MQTT gateway
 - understand channel hopping
-- configurable polling interval
+- ~~configurable polling interval~~ done: interval ist configurable in ahoy.yml
 - commands
 - picture of setup!
 - python module