IIC通讯协议分析
基本参数
- 使用标准IIC通讯，数据速率为86Kbit/s
- IIC地址分配
使用了8组IIC，对应12个端口，所以有几组是共用的
地址分组表格
端口 分组 IIC地址 1 1 0x10 2 2_3 0x10 3 2_3 0x11 4 4_5 0x10 5 4_5 0x11 6 6 0x10 7 7 0x10 8 8_9 0x10 9 8_9 0x11 10 10_11 0x10 11 10_11 0x11 12 12 0x10
指令流程
下面是抓取的一段指令数据以及分析：
//设备总线初始化，疑似获取IIC数据速率 86Kb/s
//如果是开关类设备，会没有应答而终止
//顺序扫描所有端口，所以和下一条指令之间有12~120ms大小的延时
write to 0x00 ack data: 0x4E 0xCA 0x03
read to 0x30 ack data: 0x56
//疑似确定IIC地址或版本号？
write to 0x30 ack data: 0x4D 0x20
write to 0x10 ack data: 0x20
read to 0x10 ack data: 0x07 0x01 0x02 0x18
//疑似
write to 0x10 ack data: 0x1F
read to 0x10 ack data: 0x00
//
write to 0x10 ack data: 0x1C
read to 0x10 ack data: 0x01
read to 0x30 nak //疑似确定总线上是否有另一个设备
//疑似获取设备信息
write to 0x10 ack data: 0x28
read to 0x10 ack data: 0x00 0x00 0x00 0x23
//疑似获取设备信息
write to 0x10 ack data: 0x3C
read to 0x10 ack data: 0xFF 0x40 0x6B 0x7F
//疑似获取设备信息
write to 0x10 ack data: 0x40 0x00
write to 0x10 ack data: 0x32
read to 0x10 ack data: 0xFF 0xFF 0xFF
//设备进入待机状态，每120ms发送一次指令
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
//立即发送指令，让马达正转
write to 0x10 ack data: 0x28 0x05
write to 0x10 ack data: 0x3E 0x73 //疑似设置转动参数
write to 0x10 ack data: 0x2A 0x32 //正反转
//待机
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
//发送指令，让马达停止
write to 0x10 ack data: 0x28 0x00
write to 0x10 ack data: 0x2A 0x00
//继续待机
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00
write to 0x10 ack data: 0x00 log记录
- 第10端口，按键间断触发正转
查看数据...
write to 0x00 ack data: 0x4E 0xCA 0x03 read to 0x30 ack data: 0x56 write to 0x30 ack data: 0x4D 0x20 write to 0x10 ack data: 0x20 read to 0x10 ack data: 0x07 0x01 0x02 0x18 write to 0x10 ack data: 0x1F read to 0x10 ack data: 0x00 write to 0x10 ack data: 0x1C read to 0x10 ack data: 0x01 read to 0x30 nak write to 0x10 ack data: 0x28 read to 0x10 ack data: 0x00 0x00 0x00 0x23 write to 0x10 ack data: 0x3C read to 0x10 ack data: 0xFF 0x40 0x6B 0x7F write to 0x10 ack data: 0x40 0x00 write to 0x10 ack data: 0x32 read to 0x10 ack data: 0xFF 0xFF 0xFF write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x3E 0x73 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00
- 第9端口，按键间断触发正转
查看数据...
write to 0x00 ack data: 0x4E 0xCA 0x03 //疑似设备查询波特率 read to 0x30 nak //设备没准备好，所以无应答。准备好会在DIO输出一个100us低电平 read to 0x30 ack data: 0x56 //疑似波特率，表示0x56 = 86Kb/s write to 0x30 ack data: 0x4D 0x22 //大部分发送0x4D 0x20,之后20ms后发送到新地址0x20 write to 0x11 ack data: 0x20 //20ms后发送到新地址0x20 read to 0x11 ack data: 0x07 0x01 0x02 0x18 //疑似回复确认，和端口无关，应该和设备有关 write to 0x11 ack data: 0x1F read to 0x11 ack data: 0x00 write to 0x11 ack data: 0x1C read to 0x11 ack data: 0x01 write to 0x11 ack data: 0x28 read to 0x11 ack data: 0x00 0x00 0x00 0x23 write to 0x11 ack data: 0x3C read to 0x11 ack data: 0xFF 0x40 0x6B 0x7F write to 0x11 ack data: 0x40 0x00 write to 0x11 ack data: 0x32 read to 0x11 ack data: 0xFF 0xFF 0xFE write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x05 write to 0x11 ack data: 0x3E 0x74 write to 0x11 ack data: 0x2A 0x32 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x00 write to 0x11 ack data: 0x2A 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x05 write to 0x11 ack data: 0x2A 0x32 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x00 write to 0x11 ack data: 0x2A 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x05 write to 0x11 ack data: 0x2A 0x32 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x00 write to 0x11 ack data: 0x2A 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00
- 第4端口，按键间断触发正转
查看数据...
write to 0x00 ack data: 0x4E 0xCA 0x03 read to 0x30 ack data: 0x56 write to 0x30 ack data: 0x4D 0x20 write to 0x10 ack data: 0x20 read to 0x10 ack data: 0x07 0x01 0x02 0x18 write to 0x10 ack data: 0x1F read to 0x10 ack data: 0x00 write to 0x10 ack data: 0x1C read to 0x10 ack data: 0x01 read to 0x30 nak write to 0x10 ack data: 0x28 read to 0x10 ack data: 0x00 0x00 0x00 0x23 write to 0x10 ack data: 0x3C read to 0x10 ack data: 0xFF 0x40 0x6B 0x7F write to 0x10 ack data: 0x40 0x00 write to 0x10 ack data: 0x32 read to 0x10 ack data: 0x00 0x00 0x01 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x3E 0x75 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x05 write to 0x10 ack data: 0x2A 0x32 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x28 0x00 write to 0x10 ack data: 0x2A 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00 write to 0x10 ack data: 0x00
- 第5端口，按键间断触发正转
查看数据...
write to 0x00 ack data: 0x4E 0xCA 0x03 read to 0x30 nak read to 0x30 ack data: 0x56 write to 0x30 ack data: 0x4D 0x22 write to 0x11 ack data: 0x20 read to 0x11 ack data: 0x07 0x01 0x02 0x18 write to 0x11 ack data: 0x1F read to 0x11 ack data: 0x00 write to 0x11 ack data: 0x1C read to 0x11 ack data: 0x01 write to 0x11 ack data: 0x28 read to 0x11 ack data: 0x00 0x00 0x00 0x23 write to 0x11 ack data: 0x3C read to 0x11 ack data: 0xFF 0x40 0x6B 0x7F write to 0x11 ack data: 0x40 0x00 write to 0x11 ack data: 0x32 read to 0x11 ack data: 0x00 0x00 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x05 write to 0x11 ack data: 0x3E 0x75 write to 0x11 ack data: 0x2A 0x32 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x00 write to 0x11 ack data: 0x2A 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x05 write to 0x11 ack data: 0x2A 0x32 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x00 write to 0x11 ack data: 0x2A 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x05 write to 0x11 ack data: 0x2A 0x32 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x28 0x00 write to 0x11 ack data: 0x2A 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00 write to 0x11 ack data: 0x00