PJON (Padded Jittering Operative Network) 是一个简单的连线、多 master 通讯总线系统。是 i2c 、1-Wire、串口以及其他 Arduino 兼容协议的替代方案。
特性
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单个物理层连接,可支持高达 50 个节点
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实现了设备编码来支持高达 254 个设备通讯
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循环冗余校验 (CRC).
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确保数据包发送的正确
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多 master 支持中的避免冲突
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提供广播功能
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包管理机制来跟踪和重新发送失败的数据包发送
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错误处理
性能
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传输速率: 32256 baud/s or 4.32kB/s
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带宽: 2.7kB/s
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精确度: 99.95%
兼容性
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Arduino Diecimila / Duemilanove
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Arduino Mini
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Arduino Uno
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Arduino Nano
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Arduino Mega
示例代码:
#include// Transmitter board code PJON network(12, 45); // Bus connection to pin 12, device id 45 void setup() { network.send(44, "B", 1, 1000000); // Send to device 44, "B" content of 1 byte length every 1000000 microseconds (1 second) } void loop() { network.update(); } /* ---------------------------------------------------------------------------- */ #include // Receiver board code PJON network(12, 44); // Bus connection to pin 12, device id 45 void setup() { network.set_receiver(receiver_function); // Set the function used to receive messages }; static void receiver_function(uint8_t length, uint8_t *payload) { if(payload[0] == 'B') { // If the first letter of the received message is B digitalWrite(13, HIGH); delay(30); digitalWrite(13, LOW); } } void loop() { network.receive(1000); }