Update mcp3204.md #5510
Update mcp3204.md #5510
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Added explanation and example for diff_mode parameter
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WalkthroughDocumentation for the MCP3204/MCP3208 analog-to-digital converter sensor component was restructured and enhanced. Changes include improved image handling with a figure directive, expanded configuration variable documentation with explicit keys and defaults, clarified voltage calculation details, and comprehensive multi-sensor YAML examples demonstrating single-ended and differential measurement modes. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes Suggested labels
Suggested reviewers
Pre-merge checks and finishing touches❌ Failed checks (1 inconclusive)
✅ Passed checks (2 passed)
✨ Finishing touches🧪 Generate unit tests (beta)
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Actionable comments posted: 3
🧹 Nitpick comments (1)
content/components/sensor/mcp3204.md (1)
27-27: Minor: Simplify "off of" to "from".The phrase "off of" is unnecessarily wordy. Consider replacing it with "from" for clarity.
Apply this diff:
-Each pin will respond with a voltage calculated off of the :code:`reference_voltage` (default is 3.3V). +Each pin will respond with a voltage calculated from the :code:`reference_voltage` (default is 3.3V).
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Files:
content/components/sensor/mcp3204.md
🪛 GitHub Actions: Lint
content/components/sensor/mcp3204.md
[error] 1-1: Markdown lint failed: MD041 - First line in a file should be a top-level heading. Context: '.. seo::'
🪛 GitHub Check: build
content/components/sensor/mcp3204.md
[failure] 53-53:
Code block style [Expected: fenced; Actual: indented]
[failure] 34-34:
Code block style [Expected: fenced; Actual: indented]
[failure] 1-1:
First line in a file should be a top-level heading [Context: ".. seo::"]
🪛 LanguageTool
content/components/sensor/mcp3204.md
[style] ~27-~27: ‘off of’ might be wordy. Consider a shorter alternative.
Context: ... will respond with a voltage calculated off of the :code:reference_voltage (default ...
(EN_WORDINESS_PREMIUM_OFF_OF)
🔇 Additional comments (1)
content/components/sensor/mcp3204.md (1)
8-85: Documentation improvements are well-structured and technically accurate.The PR successfully documents the new diff_mode parameter with clear examples and proper explanations. Key strengths:
- Multi-sensor YAML examples effectively demonstrate both single-ended and differential measurement modes
- Configuration variables section clearly documents mcp3204_id, number, diff_mode, and update_interval with proper defaults
- Voltage calculation formula is explicit and helpful
- Note section properly explains differential vs. single-ended behavior with datasheet reference
- Figure directive with proper metadata improves visual presentation
Once the formatting issues above are resolved, this documentation will be clear and complete.
| .. seo:: | ||
| description: Instructions for setting up MCP3204 & MCP3208 12-Bit Analog to Digital Converter in ESPHome. | ||
| image: mcp3204.jpg | ||
| --- | ||
|
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||
| The Microchip Technology Inc. MCP3204 & MCP3208 devices are successive approximation 12-bit Analog-to-Digital (A/D) | ||
| converters with on-board sample and hold circuitry. This component is common for both device types. | ||
| Configure both devices as MCP3204 and observe the maximum number of channels as per variant used. | ||
| MCP3204 & MCP3208 12-Bit A/D Converters | ||
| ======================================= |
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Fix markdown lint error MD041: First line should be a top-level heading.
The pipeline is failing because the file begins with a reStructuredText directive (.. seo::) rather than a top-level heading. The markdown linter expects a heading as the first element.
Move the SEO block below the title or restructure the file to start with the top-level heading:
-.. seo::
-
- description: Instructions for setting up MCP3204 & MCP3208 12-Bit Analog to Digital Converter in ESPHome.
- image: mcp3204.jpg
-
MCP3204 & MCP3208 12-Bit A/D Converters
=======================================
+
+.. seo::
+
+ description: Instructions for setting up MCP3204 & MCP3208 12-Bit Analog to Digital Converter in ESPHome.
+ image: mcp3204.jpg📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| .. seo:: | |
| description: Instructions for setting up MCP3204 & MCP3208 12-Bit Analog to Digital Converter in ESPHome. | |
| image: mcp3204.jpg | |
| --- | |
| The Microchip Technology Inc. MCP3204 & MCP3208 devices are successive approximation 12-bit Analog-to-Digital (A/D) | |
| converters with on-board sample and hold circuitry. This component is common for both device types. | |
| Configure both devices as MCP3204 and observe the maximum number of channels as per variant used. | |
| MCP3204 & MCP3208 12-Bit A/D Converters | |
| ======================================= | |
| MCP3204 & MCP3208 12-Bit A/D Converters | |
| ======================================= | |
| .. seo:: | |
| description: Instructions for setting up MCP3204 & MCP3208 12-Bit Analog to Digital Converter in ESPHome. | |
| image: mcp3204.jpg |
🧰 Tools
🪛 GitHub Actions: Lint
[error] 1-1: Markdown lint failed: MD041 - First line in a file should be a top-level heading. Context: '.. seo::'
🪛 GitHub Check: build
[failure] 1-1:
First line in a file should be a top-level heading [Context: ".. seo::"]
🤖 Prompt for AI Agents
In content/components/sensor/mcp3204.md lines 1-6 the file starts with a
reStructuredText SEO directive which triggers markdown-lint MD041 because the
first line must be a top-level heading; fix by moving the ".. seo::" block below
the main title (keep the "MCP3204 & MCP3208 12-Bit A/D Converters" as the very
first line preceded by a single "#"/underlined level-1 heading per your repo
style), ensure a blank line between the title and the SEO block, and verify the
file now begins with the top-level heading so the linter passes.
| mcp3204: | ||
| cs_pin: GPIOXX | ||
| reference_voltage: 3.3V |
There was a problem hiding this comment.
Use fenced code block style instead of indented.
The build tool reports that code block style should be fenced (with triple backticks), not indented.
Apply this diff to use fenced code block syntax:
-.. code-block:: yaml
-
- mcp3204:
- cs_pin: GPIOXX
- reference_voltage: 3.3V
+.. code-block:: yaml
+
+ mcp3204:
+ cs_pin: GPIOXX
+ reference_voltage: 3.3VCommittable suggestion skipped: line range outside the PR's diff.
🧰 Tools
🪛 GitHub Check: build
[failure] 34-34:
Code block style [Expected: fenced; Actual: indented]
🤖 Prompt for AI Agents
In content/components/sensor/mcp3204.md around lines 34 to 36, the YAML example
is written as an indented code block; replace it with a fenced code block using
triple backticks (```yaml) before the block and closing triple backticks after
it so the build tool recognizes the fenced style, preserving the exact content
and indentation inside the fenced block.
| .. code-block:: yaml | ||
|
|
||
| sensor: | ||
| - platform: mcp3204 # Single-ended mode: pin 0 of MCP3204 | ||
| id: solar_voltage | ||
| number: 0 | ||
|
|
||
| # Pin 7 of MCP3208 in single-ended mode (for MCP3208, use pin numbers 0-7) | ||
| - platform: mcp3204 | ||
| id: supply_voltage | ||
| number: 7 | ||
|
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||
| # Differential mode: Measures voltage between channel 0 (IN+) and channel 1 (IN–) | ||
| - platform: mcp3204 | ||
| id: differential_sensor | ||
| number: 0 # Channel 0 (IN+), paired with 1 (IN–) in differential mode | ||
| diff_mode: true # Enable differential mode | ||
| name: "Differential Voltage CH0–CH1" |
There was a problem hiding this comment.
Use fenced code block style instead of indented.
The build tool reports that code block style should be fenced (with triple backticks), not indented for the sensor examples block.
The indented code block structure appears correct for reStructuredText, but verify with the build configuration whether fenced blocks are required for consistency with the documentation style guide.
🧰 Tools
🪛 GitHub Check: build
[failure] 53-53:
Code block style [Expected: fenced; Actual: indented]
🤖 Prompt for AI Agents
In content/components/sensor/mcp3204.md around lines 51 to 68, the sensor
example uses an indented reStructuredText code-block; update it to use a fenced
code block with triple backticks and the yaml language tag (```yaml) so the
build tool accepts the block; preserve the same inner YAML content and
indentation, replace the leading ".. code-block:: yaml" and its indented content
with a fenced block opening and closing lines, and ensure there is a blank line
after the opening fence if required by the renderer.
1 participant
Description
Adds documentation for the new diff_mode parameter to the MCP3204/MCP3208 sensor component in ESPHome.
Documents how to enable differential measurement mode.
Updates YAML examples to clarify differential channel pairings.
Related issue (if applicable):
None.
Pull request in esphome with YAML changes (if applicable):
esphome/esphome#7436
Checklist
I am merging into next because this is new documentation that has a matching pull request in esphome as linked above.