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__pycache__
135 changes: 135 additions & 0 deletions CODE_OF_CONDUCT.md
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<!--
SPDX-FileCopyrightText: 2014 Coraline Ada Ehmke
SPDX-FileCopyrightText: 2019 Kattni Rembor for Adafruit Industries
SPDX-License-Identifier: CC-BY-4.0
-->
# Adafruit Community Code of Conduct

## Our Pledge

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## Attribution

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21 changes: 21 additions & 0 deletions LICENSE
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The MIT License (MIT)

Copyright (c) 2013, 2014 Damien P. George

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
31 changes: 31 additions & 0 deletions README.md
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# SPI Flash Analyzer for Logic 2


[![Box with Discord user count](https://img.shields.io/discord/327254708534116352.svg)](https://adafru.it/discord)
[![Box with MIT license](https://img.shields.io/badge/License-MIT-brightgreen.svg)](https://choosealicense.com/licenses/mit/)

This is a basic high level analyzer for Saleae Logic 2 that interprets semi-standard SPI flash commands. The output can be limited by command type and data commands can also be limited by address. One can add the analyzer multiple times to get separate analysis tracks for different types of commands.

![Screenshot of the extension](screenshot.png)

## Installation

In Logic 2, click extensions on the right hand side.

### To Use

Under the three dot, more menu, click `Check for Updates` then install the `SPI Flash` extension.

### To Develop

1. Clone this repo locally.
2. Under the three dot, more menu, click `Load Existing Extension...` and then select the local repo location.

## Usage
1. Click the analyzers tab.
2. Add a `SPI` analyzer and configure it for your capture.
3. Add a `SPI Flash` analyzer.
4. Set the `SPI` analyzer as the Input Analyzer.
5. `Min Address`, `Max Address` and `Decode Level` are optional.
6. Change `Address Bytes` to match
112 changes: 112 additions & 0 deletions SPIFlashAnalyzer.py
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# High Level Analyzer
# For more information and documentation, please go to https://support.saleae.com/extensions/high-level-analyzer-extensions

from saleae.analyzers import HighLevelAnalyzer, AnalyzerFrame, StringSetting, NumberSetting, ChoicesSetting

import struct

DATA_COMMANDS = {0x03: "Read",
0x0b: "Fast Read",
0x02: "Page Program",
0x32: "Quad Page Program"}

CONTROL_COMMANDS = {
0x06: "Write Enable",
0x05: "Read Status Register",
0x75: "Program Suspend"
}

# High level analyzers must subclass the HighLevelAnalyzer class.
class SPIFlash(HighLevelAnalyzer):
# List of settings that a user can set for this High Level Analyzer.
address_bytes = NumberSetting(min_value=1, max_value=4)
min_address = NumberSetting(min_value=0)
max_address = NumberSetting(min_value=0)
decode_level = ChoicesSetting(choices=('Everything', 'Only Data', 'Only Errors', 'Only Control'))

# An optional list of types this analyzer produces, providing a way to customize the way frames are displayed in Logic 2.
result_types = {
'error': {
'format': 'Error!'
},
'control_command': {
'format': '{{data.command}}'
},
'data_command': {
'format': '{{data.command}} 0x{{data.address}}'
}
}

def __init__(self):
'''
Initialize HLA.
Settings can be accessed using the same name used above.
'''
self._start_time = None
self._address_format = "{:0" + str(2*int(self.address_bytes)) + "x}"
self._min_address = int(self.min_address)
self._max_address = None
if self.max_address:
self._max_address = int(self.max_address)

def decode(self, frame: AnalyzerFrame):
'''
Process a frame from the input analyzer, and optionally return a single `AnalyzerFrame` or a list of `AnalyzerFrame`s.
The type and data values in `frame` will depend on the input analyzer.
'''

if frame.type == "enable":
self._start_time = frame.start_time
self._miso_data = bytearray()
self._mosi_data = bytearray()
elif frame.type == "result":
if self._miso_data is None or self._mosi_data is None:
print(frame)
return
self._miso_data.extend(frame.data["miso"])
self._mosi_data.extend(frame.data["mosi"])
elif frame.type == "disable":
if not self._miso_data or not self._mosi_data:
return
command = self._mosi_data[0]
frame_type = None
frame_data = {"command": command}
if command in DATA_COMMANDS:
if len(self._mosi_data) < 1 + int(self.address_bytes):
frame_type = "error"
else:
frame_type = "data_command"
frame_data["command"] = DATA_COMMANDS[command]
frame_address = 0
for i in range(int(self.address_bytes)):
frame_address <<= 8
frame_address += self._mosi_data[1+i]
if self.min_address > 0 and frame_address < self._min_address:
frame_type = None
elif self.max_address and frame_address > self.max_address:
frame_type = None
else:
frame_data["address"] = self._address_format.format(frame_address)
else:
if command in CONTROL_COMMANDS:
frame_data["command"] = CONTROL_COMMANDS[command]
frame_type = "control_command"
our_frame = None
if frame_type:
our_frame = AnalyzerFrame(frame_type,
self._start_time,
frame.end_time,
frame_data)
self._miso_data = None
self._mosi_data = None
if self.decode_level == 'Only Data' and frame_type == "control_command":
return None
if self.decode_level == 'Only Errors' and frame_type != "error":
return None
if self.decode_level == "Only Control" and frame_type != "control_command":
return None
return our_frame
else:
print(frame)
13 changes: 13 additions & 0 deletions extension.json
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{
"name": "SPI Flash",
"apiVersion": "1.0.0",
"author": "Scott Shawcroft for Adafruit",
"version": "0.8.0",
"description": "Annotate common SPI flash commands",
"extensions": {
"SPI Flash": {
"type": "HighLevelAnalyzer",
"entryPoint": "SPIFlashAnalyzer.SPIFlash"
}
}
}
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