What is GEVINO-TFT-7-10 AGENTS.md?

A programming guide for AI agents creating firmware for the GEVINO TFT, an Arduino-compatible touchscreen industrial controller. It covers the board's hardware, programming setup, and input/output rules.

Use it when writing Arduino or C++ firmware for the 7-inch or 10-inch GEVINO TFT, including touchscreen, shift-register, and industrial input/output code.

It gives agents the board-specific details needed to generate code that matches its screen, ports, communication hardware, and programming environment.

How geva-elettronica/GEVINO-TFT-7-10 configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to geva-elettronica/GEVINO-TFT-7-10. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/geva-elettronica/GEVINO-TFT-7-10/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/geva-elettronica/GEVINO-TFT-7-10

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md

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Per session 5,392 This file is loaded in full into every session.

When invoked 5,392 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.05392	$0.05392
Opus 5	$0.02696	$0.02696
Sonnet 5	$0.01078	$0.01078
Haiku 4.5	$0.00539	$0.00539

Measured 12d ago against content hash b1aafd16c6de, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

GEVINO-TFT-7-10 AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 362 lines

How it starts

The opening of the file, as written. The whole thing — 362 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Programming guide for the GEVINO TFT (7" / 10")

This file is written for LLMs and AI coding agents (Claude Code, Cursor, Copilot, etc.) that write firmware for the GEVINO TFT HMI PLC. It is also useful to human developers. If you are generating Arduino/C++ code for this board, follow these rules.

What the board is

GEVINO TFT is an Arduino Zero compatible HMI PLC with a 7" or 10" capacitive-touch TFT (1024×600, Raio RA8876 controller), based on the Microchip SAMD21 (32-bit ARM Cortex-M0+, 48 MHz, 256 KB flash, 32 KB RAM). It has 12 opto-isolated inputs (4 high-speed/interrupt), 8 opto-isolated outputs (PNP/NPN/AC, 1 A 30 V), 4 analog inputs + 1 analog output, an RS485 bus, a front USB-stick reader (CH376), a rear micro-SD and optional Ethernet/Wi-Fi/Bluetooth/GSM/LoRa modules. Program it with the Arduino IDE / Arduino SAMD core (board Arduino Zero, Native USB Port); it also works with Cursor and OpenPLC.

7" vs 10": the two models are the same board — only the glass changes. The touch controller differs: 7" = FT5206 (I²C 0x38), 10" = GT9271 (I²C 0x5D). Probe both I²C addresses at startup to auto-detect which panel is fitted (see GEVINO_TFT_Test).

The complete pin map is in README.md and in src/gevino_tft_io.h.

Golden rules

Write non-blocking, state-based code. Prefer switch/case state machines. Avoid delay() in loop(); use millis() or the bundled Timer.

Respect the include order:

#include "gevino_tft_io.h"    // board I/O, ADC, Timer
#include "All_76_Pic_65K.h"   // image data (uses the `code`/PROGMEM macro)
#include "gevino_tft_display.h"

Include gevino_tft_io.h in exactly ONE translation unit (your main .ino): it instantiates the Serial2/Serial3 SERCOM UARTs, their ISRs and the global I/O registers (OutReg/InReg).
Do not initialise the I/O yourself. gevino_io_setup() configures every pin, drive strength, chip-selects, the shift-register I/O, the touch reset and the ADC/DAC resolution. Call it once in setup(), after Serial2.begin() / Serial3.begin().
Use the macros (In0…In11, setOut0…setOut7, resOut0…resOut7, setLed, set_Rs485_TxEn). Never hard-code raw pin numbers.

Read the full file on GitHub · 362 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago First seen · 362 lines · 5,392 tokens per session scan A b1aafd16c6de

Subscribe to this mod's changes

GEVINO-TFT-7-10 AGENTS.md is an instructions file published in the GitHub repository geva-elettronica/GEVINO-TFT-7-10 (5 stars, last pushed 2mo ago), licensed MIT. It adds 5,392 tokens to every session, about $0.0270 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Hardware and IoT arduino gevino industrial industrial-automation industrial-control-systems plc

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