Merge pull request #132 from Pi4J/BME280_readmen

BME readme update

Author: taartspi

src/main/java/com/pi4j/devices/bme280/README.md

@@ -3,47 +3,51 @@ https://pdf1.alldatasheet.com/datasheet-pdf/view/1132060/BOSCH/BME280.html
 This example device has been migrated under the drivers. The device code can be found at
 https://github.com/Pi4J/pi4j-drivers/tree/main/src/main/java/com/pi4j/drivers/sensor/bmx280
 
-The program uses org.slf4j.simple Class SimpleLogger as suggested by the Pi4j_V2 documentation.
-Consult that logger class documentation to understand its various logging options.
 
-I2C connection path.
+I2C 
 
 1. ./mvnw clean package
 2. cd target/distribution
 3. sudo ./runBME280I2C.sh
-   Args if bus and or address must be set
-   -b 0x01 -a 0x77
+   Args if address must be set
+   -a 0x77
 
-The SPI example assumes SPI bus 0, ChipSelect GPIO 21. The GPIO is configurable as a program parm option.
+   No parameters are required. However, if 'any' parameter value is to be supplied:
+   parms: -a hex value address
+   
 
-The SPI connection per the Datasheet supports MODE0 or MODE3. The spec shows reading a register consists of:
+SPI
+The SPI connection per the Datasheet supports MODE0 or MODE3.
+The SPI example assumes SPI bus 0, ChipSelect 0
 
-1. Chip select driven low
-2. Eight clocks pulses to write the register address via the Pi MOSI
-3. Multiple eight clock pulses for each byte of data returned thru the Pi MISO
-4. Chip select driven high
+1. ./mvnw clean package
+2. cd target/distribution
+3. sudo ./runBME280SPI.sh 
+4. 
 
-In either Mode0 or Mode3 the read data bytes are miss-read and the clock pulses are not signaled for the expected reads.
-The SPI open flags support configuration of writing a determined number of bytes before continuing the clock pulses
-for the expected read data . This however requires the BMP280 chip connect using the 3-wire configuration and
-the chips config register be modified. As most chips use 4-wire configuration I use 4-wire, and use a configurable
-GPIO as the CS (chip select)
 
-SPI connection path.
+I2C connection
 
-1. ./mvnw clean package
-2. cd target/distribution
-3. sudo ./runBME280SPI.sh -csp 21
+| RPi        | Color  | Sensor |
+|:-----------|:-------|:-------|
+| Pin1  3.3V | 	Red   | Vin    |
+| N/C        |        | 3v	    |
+| Pin6  Gnd  | Brown  | Gnd    |
+| Pin5  SCL  | Green  | SCK    |
+| N/C        | Yellow | SDO    |
+| Pin3  SDA  | Blue   | SDI    |
+| Pin17 3.3v | Orange | CS     |
 
-No parameters are required. However, if 'any' parameter value is to be supplied:
-parms: -b hex value bus -a hex value address -t trace  
-trace values : "trace", "debug", "info", "warn", "error" or "off"  Default "info"
 
 SPI connection using 4-wire SPI
 
-Pi p19 MOSI BMP SDI Blue
-Pi p21 MISO BMP SDO Yellow
-Pi p23 SCLK BMP SCK Green
-Pi p40 GPIO21 BMP CS Orange
-Pi Gnd BMP GND Brown
-Pi 3.3 BMP Vin Red
+| RPi          | Color  | Sensor |
+|:-------------|:-------|:-------|
+| Pin19 MOSI   | Blue   | SDI    |
+| Pin21 MISO   | Yellow | SDO    |
+| Pin23 SCLK   | Green  | SCK    |
+| Pin24 SPICE0 | Orange | CS     |
+| Pin6  Gnd    | Brown  | GND    |
+| Pin1  3.3V   | Red    | Vin    |
+
+