d0kuhn/mqtt2LoRaWAN
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added hint about missing traces on PCB

Browse Source
This commit is contained in:
Wolfgang Klenk 2017-11-13 10:31:46 +01:00
parent 1be030b838
commit f5e8c00753
1 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
README.md
View File

@ -15,6 +15,34 @@ default. For instructions on manual installation please refer to the
following site: following site:
http://wiringpi.com/download-and-install/ http://wiringpi.com/download-and-install/
### Check hardware revision of Dragino LoRa/GPS HAT
Look for a hardware revision number at the LoRa/GPS HAT PCB.
It should read "Lora/GPS HAT for RPI v1.3". If the version is below 1.3, you
need to add some traces. Locate the header pins DIO0, DIO1 and DIO2 on the PCB.
* DIO0 is already connected to physical pin #7 aka WiringPi pin 7 aka BCM pin 4.
* DIO1 *has to be manually connected* to physical pin #16 aka WiringPi pin 4 aka BCM pin 23.
* DIO2 *has to be manually connected* to physical pin #18 aka WiringPi pin 5 aka BCM pin 24.
The pin numbering may be confusing, but WiringPi can be used to print out all these
pin numbers.
pi@rpi3:~/lmic-rpi-lora-gps-hat $ gpio readall
+-----+-----+---------+------+---+---Pi 3---+---+------+---------+-----+-----+
| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |
+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
| | | 3.3v | | | 1 || 2 | | | 5v | | |
| 2 | 8 | SDA.1 | IN | 1 | 3 || 4 | | | 5V | | |
| 3 | 9 | SCL.1 | IN | 1 | 5 || 6 | | | 0v | | |
| 4 | 7 | GPIO. 7 | IN | 0 | 7 || 8 | 0 | IN | TxD | 15 | 14 |
| | | 0v | | | 9 || 10 | 1 | IN | RxD | 16 | 15 |
| 17 | 0 | GPIO. 0 | IN | 1 | 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 |
| 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | | | 0v | | |
| 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 0 | IN | GPIO. 4 | 4 | 23 |
| | | 3.3v | | | 17 || 18 | 0 | IN | GPIO. 5 | 5 | 24 |
| 10 | 12 | MOSI | ALT0 | 0 | 19 || 20 | | | 0v | | |
### Enable SPI interface ### Enable SPI interface
Per default, the SPI ports on the Raspberry Pi are disabled. You need to Per default, the SPI ports on the Raspberry Pi are disabled. You need to
manually enable them using raspi-config. manually enable them using raspi-config.