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add console_internal debugging instructions #394

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merged 3 commits into from
Aug 2, 2023
Merged

add console_internal debugging instructions #394

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304b72b
add console_internal debugging instructions
curiousercreative Aug 1, 2023
ea44c32
Update debugging.md
curiousercreative Aug 2, 2023
8fe4963
Update debugging.md
curiousercreative Aug 2, 2023
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27 changes: 22 additions & 5 deletions docs/debugging.md
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Expand Up @@ -5,7 +5,24 @@ Terms used:
- *host*: The system that will have all devices connected to it and
will receive the EC logs

## Parallel port
## Debugging with target device
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[log_cflag]: https://github.com/system76/ec/blob/master/src/board/system76/common/common.mk#L31-L39
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1. Install dependencies
```bash
./scripts/deps.sh
```
1. Start the console
```bash
make BOARD=system76/<model> console_internal
```
1. If you're not seeing seeing expected output, check the
[log level cflag][log_cflag]. This is an EC compile time configuration and
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changing will require a build and flash of the EC.

## Debugging with external device

### Parallel port

This method replaces the keyboard with a device used for debug logging.
An alternate method of interacting with the target is needed; e.g., an
Expand All @@ -20,7 +37,7 @@ Requirements:
For details on configuring the Mega 2560 and breakout board, see
[mega2560](./mega2560.md).

### Setup
#### Setup

1. Enable parallel port debugging in the EC firmware
- Uncomment `PARALLEL_DEBUG` in `src/board/system76/common/common.mk`
Expand All @@ -46,12 +63,12 @@ To return the Mega 2560 to host mode, reset the device.

If logs are corrupted, try power cycling the Mega or reseating the cable.

## I2C connection
### I2C connection

**Failure to follow steps in order, or performing steps on an
unsupported board, may result in damaged board components.**

### Wiring the target
#### Wiring the target

The I2C connection is made through the battery pins. Find the pins marked
`SMC_BAT` (clock) and `SMD_BAT` (data) in the service manual.
Expand Down Expand Up @@ -86,7 +103,7 @@ oryp7 | 6 | 5
9. Reconnect battery
10. Replace bottom panel

### Setup
#### Setup

Requirements:
- Target wired for EC debugging
Expand Down