# STM32 Timer and PWM Calculator

> STM32 Timer and PWM Calculator is a paid API for AI agents from api.rocads.com.mx, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Calculates STM32 microcontroller timer configuration registers and PWM parameters given desired frequency, prescaler, and duty cycle inputs

## Facts

- Endpoint: POST https://api.rocads.com.mx/v1/embedded/stm32/timer?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stm32-timer-and-pwm-calculator-fb2fc3df
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N64S3oUBPk3ClyYgpZLmj

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability stm32-timer-and-pwm-calculator-fb2fc3df -d '<json body>'
```

Example prompt: Calculate the STM32 timer registers I need to generate a 50Hz PWM signal with a 7.5% duty cycle, assuming a peripheral clock of 72MHz — give me the PSC, ARR, and CCR values.

## When to prefer this

Use this endpoint when you need to quickly and accurately compute STM32 hardware timer register values without manually doing the integer arithmetic or risking off-by-one errors. Ideal for embedded developers who know their desired PWM frequency and duty cycle but want the exact PSC, ARR, and CCR values calculated automatically for a given STM32 peripheral clock speed.

## Known failure modes

- Invalid or out-of-range clock frequency causing division-by-zero or overflow in register calculation
- Requested frequency not achievable with 16-bit or 32-bit timer limits — returns error or nearest approximation
- Missing required input fields such as clock frequency or target frequency
- Duty cycle out of 0–100% range returns validation error
- Prescaler or ARR exceeding maximum register width for specified timer type

## How this service works

STM32 timer and PWM calculation service

## Output

Returns computed STM32 timer register values including prescaler (PSC), auto-reload register (ARR), and capture/compare register (CCR) values that will produce the requested timer frequency and PWM duty cycle on the target STM32 device, given the input clock frequency.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stm32-timer-and-pwm-calculator-fb2fc3df/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.rocads.com.mx](https://www.zero.xyz/host/api.rocads.com.mx/llms.txt)