I don't know what pins are being used for what. - Githubissues

SwampFlux / CV-Graphic-Alternate-Firmware

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I don't know what pins are being used for what. #1

Open wraybowling opened 6 years ago

wraybowling commented 6 years ago

An ATMEGA328P has 28 pins and it's not very clear what pins are being used for what purpose.

https://www.arduino.cc/en/Hacking/PinMapping168

If it's checked, then I'm 100% certain. If not, I'm still guessing.

Row 1

[ ] 1
[ ] 2 FTDI connector pin 3 (TX) seems to be backwards with RX
[ ] 3 FTDI connector pin 2 (RX) seems to be backwards with TX
[x] 4 Right side LED & digital output
[ ] 5
[x] 6 Left side LED & digital output
[x] 7 Power
[x] 8 Ground (only used for FTDI connector)
[x] 9 16MHz Crystal Oscillator clock 1
[x] 10 16MHz Crystal Oscillator clock 2
[ ] 11 radial encoder top left
[ ] 12 radial encoder top right
[ ] 13 radial encoder bottom right
[x] 14 screen Data Command (DC) ((front: DC))

Row 2

[x] 15 screen Reset ((front: R))
[x] 16 screen OLED Chip Select (OLEDCS) ((front: OC))
[x] 17 screen Master Out Slave In (MOSI) ((front: SI))
[x] 18 screen Master In Slave Out (MISO) ((front: SO))
[x] 19 screen Serial Clock (SCK) ((front: CL))
[x] 20 Power
[x] 21 Reference Voltage
[x] 22 Ground
[x] 23 (A0)
[x] 24 (A1)
[x] 25 (A2)
[x] 26 (A3) radial encoder bottom left
[x] 27 (A4)
[x] 28 (A5)

Radial Encoder top center connects to bottom left ???

wraybowling commented 6 years ago

Trying to find the pin for the right side LED made me crazy... So time for a damn checklist!