mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-12 21:00:58 +00:00
142 lines
4.9 KiB
Markdown
142 lines
4.9 KiB
Markdown
|
# Southpaw Extended 65%
|
||
|
|
||
|
Development docs covering the following:
|
||
|
- Kimera core
|
||
|
- RGB
|
||
|
- Backlight
|
||
|
|
||
|
## Kimera core
|
||
|
![Kimera core](https://gd2.alicdn.com/imgextra/i4/159916802/TB2qsIgdrJkpuFjy1zcXXa5FFXa_!!159916802.jpg)
|
||
|
|
||
|
What little available info that was available for the qmk port
|
||
|
- atmega32u4 16Mhz
|
||
|
- board seems to have a 6Mhz crystal
|
||
|
- 2x PCA9555 I2C IO expander
|
||
|
|
||
|
Links:
|
||
|
- [Schematic, BOM, Gerbers](/kairyu/kimera/blob/master/kimera_core)
|
||
|
- [Original firmware](https://github.com/kairyu/tmk_keyboard_custom/tree/master/keyboard/kimera)
|
||
|
|
||
|
```c
|
||
|
/*
|
||
|
Kimera_core_v1.0 Components
|
||
|
|
||
|
U1 (atmega32u4)
|
||
|
,----------------.
|
||
|
TX --| TX0(PD3) RAW |--
|
||
|
RX --| RX1(PD2) GND |--
|
||
|
--| GND RESET |-- RST
|
||
|
--| GND VCC |--
|
||
|
SDA --| 2(PD1) (PF4)A3 |--
|
||
|
SCL --| 3(PD0) (PF5)A2 |--
|
||
|
(INT) --| 4(PD4) (PF6)A1 |--
|
||
|
--| 5(PC6) (PF7)A0 |--
|
||
|
--| 6(PD7) (PB1)15 |-- SCK
|
||
|
LED2 --| 7(PE6) (PB3)14 |-- MISO
|
||
|
LED1 --| 8(PB4) (PB2)16 |-- MOSI
|
||
|
LED3 --| 9(PB5) (PB6)10 |-- LED4
|
||
|
`----------------'
|
||
|
|
||
|
IC1 (PCA9555) IC2 (PCA9555)
|
||
|
,----------. ,----------.
|
||
|
SDA --| SDA P00 |-- P1 SDA --| SDA P00 |-- P17
|
||
|
SCL --| SCL P01 |-- P2 SCL --| SCL P01 |-- P18
|
||
|
INT --| INT P02 |-- P3 INT --| INT P02 |-- P19
|
||
|
| P03 |-- P4 | P03 |-- P20
|
||
|
GND --| A0 P04 |-- P5 VCC --| A0 P04 |-- P21
|
||
|
SJ1 --| A1 P05 |-- P6 SJ1 --| A1 P05 |-- P22
|
||
|
SJ2 --| A2 P06 |-- P7 SJ2 --| A2 P06 |-- P23
|
||
|
| P07 |-- P8 | P07 |-- P24
|
||
|
| | | |
|
||
|
| P10 |-- P9 | P10 |-- P25
|
||
|
| P11 |-- P10 | P11 |-- P26
|
||
|
| P12 |-- P11 | P12 |-- P27
|
||
|
| P13 |-- P12 | P13 |-- P28
|
||
|
| P14 |-- P13 | P14 |-- P29
|
||
|
| P15 |-- P14 | P15 |-- P30
|
||
|
| P16 |-- P15 | P16 |-- P31
|
||
|
| P17 |-- P16 | P17 |-- P32
|
||
|
`----------' `----------'
|
||
|
*/
|
||
|
|
||
|
```
|
||
|
|
||
|
### Bootloader
|
||
|
Default bootloader is `atmel-dfu`.
|
||
|
Reboot to bootloader via magnetic switch next to icsp header.
|
||
|
Flash using regular dfu methods.
|
||
|
|
||
|
### Southpaw Extended 65 pin mappings
|
||
|
Taken from [kimera-config.json](https://github.com/kairyu/tkg/blob/master/keyboard/config/kimera-config.json)
|
||
|
|
||
|
"row_mapping": [ 2, 3, 4, 5, 6 ],
|
||
|
"col_mapping": [ 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ],
|
||
|
|
||
|
# RGB
|
||
|
- PIN C7
|
||
|
- Number of RGB LED 7
|
||
|
|
||
|
# Backlight
|
||
|
- PIN B5
|
||
|
|
||
|
# Capslock
|
||
|
- PIN B6
|
||
|
|
||
|
# Numlock
|
||
|
- PIN C6
|
||
|
|
||
|
## Assumptions
|
||
|
### Pin/Port mappings
|
||
|
- All cols are on the same IC
|
||
|
- All rows are on the same IC and port
|
||
|
- Pins mapped sequentially
|
||
|
- Each port only does row or column not a mixture of both
|
||
|
- No need to have complex port config
|
||
|
-
|
||
|
|
||
|
| ROW index | Kimera Pin | PCA9555 |
|
||
|
| ----------|------------|-------------------|
|
||
|
| 0 | 2 | IC1 Port 0 pin 1 |
|
||
|
| 1 | 3 | IC1 Port 0 pin 2 |
|
||
|
| 2 | 4 | IC1 Port 0 pin 3 |
|
||
|
| 3 | 5 | IC1 Port 0 pin 4 |
|
||
|
| 4 | 6 | IC1 Port 0 pin 5 |
|
||
|
|
||
|
- Safe enough to assume `row_index == pin`
|
||
|
|
||
|
|
||
|
| COL index | Kimera Pin | PCA9555 |
|
||
|
| ----------|------------|-------------------|
|
||
|
| 0 | 13 | IC1 Port 1 pin 4 |
|
||
|
| 1 | 14 | IC1 Port 1 pin 5 |
|
||
|
| 2 | 15 | IC1 Port 1 pin 6 |
|
||
|
| 3 | 16 | IC1 Port 1 pin 7 |
|
||
|
| 4 | 17 | IC2 Port 0 pin 0 |
|
||
|
| 5 | 18 | IC2 Port 0 pin 1 |
|
||
|
| 6 | 19 | IC2 Port 0 pin 2 |
|
||
|
| 7 | 20 | IC2 Port 0 pin 3 |
|
||
|
| 8 | 21 | IC2 Port 0 pin 4 |
|
||
|
| 9 | 22 | IC2 Port 0 pin 5 |
|
||
|
| 10 | 23 | IC2 Port 0 pin 6 |
|
||
|
| 11 | 24 | IC2 Port 0 pin 7 |
|
||
|
| 12 | 25 | IC2 Port 1 pin 0 |
|
||
|
| 13 | 26 | IC2 Port 1 pin 1 |
|
||
|
| 14 | 27 | IC2 Port 1 pin 2 |
|
||
|
| 15 | 28 | IC2 Port 1 pin 3 |
|
||
|
| 16 | 29 | IC2 Port 1 pin 4 |
|
||
|
| 17 | 30 | IC2 Port 1 pin 5 |
|
||
|
| 18 | 31 | IC2 Port 1 pin 6 |
|
||
|
|
||
|
- Need to read both ICs and corresponding port to compile the correct column data
|
||
|
- All pins are mapped sequentially
|
||
|
- maps to the usual practice of reading matrix columns
|
||
|
- Needs uint32_t to read 19 columns of data
|
||
|
|
||
|
## Notes
|
||
|
[pca9555 datasheet](https://www.ti.com/lit/ds/symlink/pca9555.pdf)
|
||
|
|
||
|
- Other Kimera based boards with non sequential pin mappings, pins mapped across ICs, or mixed row/col configs will need more complicated `pin -> i2c_addr,port,pin` logic as well as rather more complex pin functions.
|
||
|
|
||
|
## Return to stock firmware
|
||
|
To return back to stock TMK firmware, use [programming guide provided by Reconsiderit](https://geekhack.org/index.php?topic=92344.msg2625784#msg2625784)
|