diff options
| -rw-r--r-- | README.md | 18 | ||||
| -rwxr-xr-x | images/IMG_3789.jpg | bin | 0 -> 1053112 bytes | |||
| -rwxr-xr-x | images/IMG_3791.jpg | bin | 0 -> 1172476 bytes | |||
| -rwxr-xr-x | images/IMG_3793.jpg | bin | 0 -> 1348434 bytes |
4 files changed, 18 insertions, 0 deletions
@@ -37,6 +37,24 @@ For this we look at the AW9523 GPIO expander with 16 pins of io. Since the LCD is a 5v circuit requiring either 8 or 12 pins we look at the Microchip MCP23017 on the Adafruit GPIO Expander Bonnet which we can wire either using both ports or one port in nibble mode.  + +### Attaching Both Boards to the Raspberry pi. + + + + +``` +root@somepi1:/home/feurig# i2cdetect -y 1 + 0 1 2 3 4 5 6 7 8 9 a b c d e f +00: -- -- -- -- -- -- -- -- -- -- -- -- -- +10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +20: 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +50: -- -- -- -- -- -- -- -- 58 -- -- -- -- -- -- -- +60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +70: -- -- -- -- -- -- -- -- +``` # References * [https://learn.adafruit.com/adafruit-aw9523-gpio-expander-and-led-driver](https://learn.adafruit.com/adafruit-aw9523-gpio-expander-and-led-driver) * [AW9523 Datasheet](https://cdn-shop.adafruit.com/product-files/4886/AW9523+English+Datasheet.pdf) diff --git a/images/IMG_3789.jpg b/images/IMG_3789.jpg Binary files differnew file mode 100755 index 0000000..13cea76 --- /dev/null +++ b/images/IMG_3789.jpg diff --git a/images/IMG_3791.jpg b/images/IMG_3791.jpg Binary files differnew file mode 100755 index 0000000..4b8a13f --- /dev/null +++ b/images/IMG_3791.jpg diff --git a/images/IMG_3793.jpg b/images/IMG_3793.jpg Binary files differnew file mode 100755 index 0000000..d5cfe7f --- /dev/null +++ b/images/IMG_3793.jpg |
