Unit EXT.IO {docsify-ignore-all}

📝描述 :octocat:例程 🛒购买链接 EasyLoader

描述

EXT.IO 是一款并行端口拓展器.集成了IO拓展芯片PCA9554PW,支持拓展至8个GPIO，能够用于用于2.3~5.5V VCC、开漏、上拉、中断输出操作.通过I2C接口（串行时钟SCL,串行数据SDA）辅助多数的微控制器提供I/0拓展,对于I/O引脚紧缺，又不想浪费资源添加额外控制器的开发者来说,EXT.IO会是一个不错辅助 Unit.

IIC 地址: 0x27.

产品描述

拓展 I/O 个数: 8
GROVE 接口, 支持 UIFlow 、 Arduino.
2x LEGO 兼容孔

包含

1x EXT.IO Unit
1x Grove 线

例程

1. Arduino IDE

以下代码仅为片段，如需获取完整代码，请点击此处。

/*
    Connect to GRVOE A on M5Core
*/
#include <M5Stack.h>
#include "PCA9554.h" // Load the PCA9554 Library

// new a object
PCA9554 ioCon1(0x27);

uint8_t res;

// initialization

M5.begin();
Wire.begin();
ioCon1.twiWrite(21, 22); // GROVE A
delay(10);
res = 1;
ioCon1.twiRead(res);
Serial.printf("res:%d\r\n", res);
ioCon1.portMode0(ALLOUTPUT); //Set the port as all output

// set the specific pin
ioCon1.digitalWrite0(0, HIGH);
ioCon1.digitalWrite0(1, HIGH);
ioCon1.digitalWrite0(2, HIGH);
ioCon1.digitalWrite0(3, HIGH);
ioCon1.digitalWrite0(4, HIGH);
ioCon1.digitalWrite0(5, HIGH);
ioCon1.digitalWrite0(6, HIGH);
ioCon1.digitalWrite0(7, HIGH);

// write 0-7 HIGHT
Serial.println(ioCon1.digitalWritePort0(0xff));

// write 0-7 LOW
Serial.println(ioCon1.digitalWritePort0(0x00));

2. UIFlow

以下代码仅为片段，如需获取完整代码，请点击此处.

管脚映射

M5Core(GROVE A)	GPIO22	GPIO21	5V	GND
EXT.IO Unit	SCL	SDA	5V	GND

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Unit EXT.IO {docsify-ignore-all}

描述

产品描述

包含

相关链接

EasyLoader

例程

1. Arduino IDE

2. UIFlow

管脚映射

3.7 KiB

Raw Permalink Blame History