mirror of
https://github.com/kidoman/embd
synced 2024-11-01 07:48:43 +01:00
35 lines
986 B
Markdown
35 lines
986 B
Markdown
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# Using embd on CHIP
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The CHIP drivers support gpio, I2C, SPI, and pin interrupts. Not supported are PWM or LED.
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The names of the pins on chip have multiple aliases. The official CHIP pin names are supported,
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for example XIO-P1 or LCD-D2 and the pin number are also supported, such as U14-14 (same as XIO-P1)
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or U13-17. Some of the alternate function names are also supported, like "SPI2_MOSI", and the
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linux 4.4 kernel gpio pin numbers as well, e.g., 1017 for XIO-P1. Finally, the official GPIO pins
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(XIO-P0 thru XIO-P7) can be addressed as gpio0-gpio7.
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A simple demo to blink an LED connected with a small resistor between XIO-P6 and 3.3V is
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```
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package main
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import (
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"time"
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"github.com/kidoman/embd"
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_ "github.com/kidoman/embd/host/chip"
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)
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func main() {
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embd.InitGPIO()
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defer embd.CloseGPIO()
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embd.SetDirection("gpio6", embd.Out)
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on := 0
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for {
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embd.DigitalWrite("gpio6", on)
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on = 1 - on
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time.Sleep(250 * time.Millisecond)
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}
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}
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```
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Run it as root: `sudo ./blinky`
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