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[Keyboard] Small update to Symmetric70 keyboard readme #17188

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May 25, 2022
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[Keyboard] Small update to Symmetric70 keyboard readme #17188

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13 changes: 12 additions & 1 deletion keyboards/handwired/symmetric70_proto/matrix_debug/readme.md
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Original file line number Diff line number Diff line change
@@ -1,11 +1,22 @@
# Debug version matrix.c

This matrix.c is quantum/matrix.c with the following additions:
This matrix.c is 0.13.19: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.

## Current performance

| MCU | delay type | execution time <br> of <br> `matrix_scan()` | matrix scan rate |
|-------------------|---------------|------------|----------------|
| Pro Micro (16MHz) | default | 503us | 1810 scans/sec |
| Pro Micro (16MHz) | adaptive | 383us | 2320 scans/sec |
| Pro Micro (16MHz) | fast adaptive | 382us | 2330 scans/sec |
| Proton C (72MHz) | default | 210us | 4350 scans/sec |
| Proton C (72MHz) | adaptive | 76.4us | 10600 scans/sec |
| Proton C (72MHz) | fast adaptive | 75.6us | 10800 scans/sec |

## Compile

* Set MATRIX_IO_DELAY value
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7 changes: 7 additions & 0 deletions keyboards/handwired/symmetric70_proto/matrix_fast/readme.md
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Expand Up @@ -15,6 +15,13 @@ This matrix.c is faster and more extensible than the standard quantum/matrix.c.
- [ ] support I/O expander (MCP23018)
- [ ] support MCU & I/O expander (MCP23018) mixture like ErgoDox

## Current performance

| MCU | delay type | execution time <br> of <br> `matrix_scan()` | matrix scan rate |
|-------------------|---------------|------------|-----------------|
| Pro Micro (16MHz) | fast adaptive | 75.6us | 8090 scans/sec |
| Proton C (72MHz) | fast adaptive | 49.8us | 15100 scans/sec |

## Configuration

This matrix.c requires a different configuration than quantum/matrix.c.
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