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qmk-dactyl-manuform-a/keyboards/handwired/symmetric70_proto/matrix_debug/readme.md

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# Debug version matrix.c
This matrix.c is quantum/matrix.c with the following additions:
* Added the MATRIX_DEBUG_SCAN_{START/END} macro to measure the execution time of matrix_scan().
* Added the MATRIX_DEBUG_DELAY_{START/END} macro to measure delay time.
* Added the MATRIX_MUL_SELECT handling for symmetric70_proto.
## Compile
* Set MATRIX_IO_DELAY value
* `make MTEST=mdelay0 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=1 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=2 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=3 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=4 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=5 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=10 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=20 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=mdelay=30 handwired/symmetric70_proto/promicro/normal:default:flash`
* Measure the execution time of matrix_scan()
* `make MTEST=matrix_debug_scan[,<other options>..] handwired/symmetric70_proto/promicro/normal:default:flash`
* Measure delay time.
* `make MTEST=matrix_debug_delay[,<other options>..] handwired/symmetric70_proto/promicro/normal:default:flash`
* Change the behavior of delay
* `make MTEST=matrix_debug_delay,always_delay handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=matrix_debug_delay,adaptive_delay,mdelay0 handwired/symmetric70_proto/promicro/normal:default:flash`
* `make MTEST=matrix_debug_delay,adaptive_delay_fast,mdelay0 handwired/symmetric70_proto/promicro/normal:default:flash`
## Measurement result
### Pro Micro (ATmega32u4 16Mhz)
#### Default setting (show `matrix_scan()` time)
- `make MTEST=matrix_debug_scan handwired/symmetric70_proto/promicro/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 503us
- Frequency of matrix scan 1.81kHz (551.0us)
![DS1Z_QuickPrint2](https://user-images.githubusercontent.com/2170248/115994477-0ba64400-a612-11eb-98ba-b8cc362f26ac.png)
#### Always call `matrix_output_unselect_delay()` (show `matrix_scan()` time, default MATRIX_IO_DELAY)
- `make MTEST=matrix_debug_scan,always_delay handwired/symmetric70_proto/promicro/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 521us
- Frequency of matrix scan 1.76kHz (568.5us)
![DS1Z_QuickPrint1](https://user-images.githubusercontent.com/2170248/115994488-1660d900-a612-11eb-83b1-cd820607db03.png)
#### Adaptive delay (show `matrix_scan()` time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_scan,mdelay0,adaptive_delay handwired/symmetric70_proto/promicro/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 383us
- Frequency of matrix scan 2.32kHz (431us)
![DS1Z_QuickPrint3](https://user-images.githubusercontent.com/2170248/115994939-034f0880-a614-11eb-861f-b83a31efa51a.png)
#### Adaptive delay (show delay time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_delay,mdelay0,adaptive_delay handwired/symmetric70_proto/promicro/normal:default:flash`
##### Press R0C1, R1C1 key
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: delay time
- Delay time 68us
- Frequency of matrix scan 1.77kHz (565us)
![DS1Z_QuickPrint55](https://user-images.githubusercontent.com/2170248/119561268-ead33900-bddf-11eb-9cc4-7e04826486cf.png)
#### Fast adaptive delay (show `matrix_scan()` time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_scan,mdelay0,adaptive_delay_fast handwired/symmetric70_proto/promicro/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 382us
- Frequency of matrix scan 2.33kHz (428us)
![DS1Z_QuickPrint56](https://user-images.githubusercontent.com/2170248/119561280-eeff5680-bddf-11eb-9576-e4cf64751955.png)
#### Fast adaptive delay (show delay time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_delay,mdelay0,adaptive_delay_fast handwired/symmetric70_proto/promicro/normal:default:flash`
##### Press R0C1, R1C1 key
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: delay time
- Delay time 11us
- Frequency of matrix scan 2.21kHz (452us)
![DS1Z_QuickPrint57](https://user-images.githubusercontent.com/2170248/119561318-faeb1880-bddf-11eb-8592-694f9ecb2248.png)
### Proton C (STM32F303 72MHz)
#### Default setting (show `matrix_scan()` time)
- `make MTEST=matrix_debug_scan handwired/symmetric70_proto/proton_c/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 210us
- Frequency of matrix scan 4.35kHz (230.0us)
![DS1Z_QuickPrint16](https://user-images.githubusercontent.com/2170248/116131295-2ad2cd80-a707-11eb-8d0a-6f7912456e03.png)
#### Always call `matrix_output_unselect_delay()` (show `matrix_scan()` time, default MATRIX_IO_DELAY)
- `make MTEST=matrix_debug_scan,always_delay handwired/symmetric70_proto/proton_c/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 242us
- Frequency of matrix scan 3.85kHz (260.0us)
![DS1Z_QuickPrint17](https://user-images.githubusercontent.com/2170248/116131308-31f9db80-a707-11eb-8db7-d1960fa7b068.png)
#### Adaptive delay (show `matrix_scan()` time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_scan,mdelay0,adaptive_delay handwired/symmetric70_proto/proton_c/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 76.4us
- Frequency of matrix scan 10.6kHz (94.4us)
![DS1Z_QuickPrint18](https://user-images.githubusercontent.com/2170248/116131369-44741500-a707-11eb-9c74-fa39d9e80947.png)
#### Adaptive delay (show delay time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_delay,mdelay0,adaptive_delay handwired/symmetric70_proto/proton_c/normal:default:flash`
##### Press R0C1, R1C1 key
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: delay time
- Delay time 7.6us
- Frequency of matrix scan 9.47kHz (105.6us)
![DS1Z_QuickPrint58](https://user-images.githubusercontent.com/2170248/119666783-a3e15400-be70-11eb-9a58-220032117efd.png)
##### Connect a 500pF capacitor between C2 line and GND, Press R0C2, R1C2, R2C2, R3C2, R4C2 keys
- CH1: Row 0
- CH2: Row 1
- CH3: Col 2
- CH4: delay time
- Delay time 12us + alpha
- Frequency of matrix scan 5.45kHz (183us)
- Threshold Voltage 1.9V
![DS1Z_QuickPrint59](https://user-images.githubusercontent.com/2170248/119666946-cc694e00-be70-11eb-9b97-4c500416d774.png)
##### Connect a 1000pF capacitor between C2 line and GND, Press R0C2, R1C2, R2C2, R3C2, R4C2 keys
- CH1: Row 0
- CH2: Row 1
- CH3: Col 2
- CH4: delay time
- Delay time 20us + alpha
- Frequency of matrix scan 4.48kHz (223us)
- Threshold Voltage 1.9V
![DS1Z_QuickPrint60](https://user-images.githubusercontent.com/2170248/119667127-f3c01b00-be70-11eb-8e7f-6f0a81f95e97.png)
#### Fast adaptive delay (show `matrix_scan()` time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_scan,mdelay0,adaptive_delay_fast handwired/symmetric70_proto/proton_c/normal:default:flash`
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: matrix_scan()
- Execution time of matrix_scan() 75.6us
- Frequency of matrix scan 10.8kHz (92.2us)
![DS1Z_QuickPrint62](https://user-images.githubusercontent.com/2170248/119667218-0b979f00-be71-11eb-946c-16f0a0454056.png)
#### Fast adaptive delay (show delay time, MATRIX_IO_DELAY = 0)
- `make MTEST=matrix_debug_delay,mdelay0,adaptive_delay_fast handwired/symmetric70_proto/proton_c/normal:default:flash`
##### Press R0C1, R1C1 key
- CH1: Row 0
- CH2: Row 1
- CH3: Row 4
- CH4: delay time
- Delay time 1.6us
- Frequency of matrix scan 10.6kHz (94.4us)
![DS1Z_QuickPrint63](https://user-images.githubusercontent.com/2170248/119667378-33870280-be71-11eb-95aa-64213138ddac.png)
![DS1Z_QuickPrint64](https://user-images.githubusercontent.com/2170248/119667504-52859480-be71-11eb-963e-eebc6e3da9dc.png)
##### Connect a 500pF capacitor between C2 line and GND, Press R0C2, R1C2, R2C2, R3C2, R4C2 keys
- CH1: Row 0
- CH2: Row 1
- CH3: Col 2
- CH4: delay time
- Delay time 13.2us
- Frequency of matrix scan 6.58kHz (152.6us)
- Threshold Voltage 1.9V
![DS1Z_QuickPrint65](https://user-images.githubusercontent.com/2170248/119667644-72b55380-be71-11eb-8030-854de1900408.png)
##### Connect a 1000pF capacitor between C2 line and GND, Press R0C2, R1C2, R2C2, R3C2, R4C2 keys
- CH1: Row 0
- CH2: Row 1
- CH3: Col 2
- CH4: delay time
- Delay time 20us
- Frequency of matrix scan 5.30kHz (188.8us)
- Threshold Voltage 1.9V
![DS1Z_QuickPrint66](https://user-images.githubusercontent.com/2170248/119667785-8f518b80-be71-11eb-8d40-fc3293aa072b.png)
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