Debug tooling for optical module. In the current, it supports QSFP28 SR4 product. Please see USBtoI2C repository for the firmware code.
Each tab is a part function operation. See below:
- Ch ON/Off --> enable/disable Tx and Rx
- DMI/ADC --> data monitor
- Alarm/Warning --> data monitor interrupt flag
- I2C Read/Write --> read and write register
ADC function, DEC to IEEE753/Int16, calculate DMI.
formula: Y=X*Slope/2^Shift+Offset.
The interrupt shows module's status: Tx/Rx loss, high/low VCC, etc.
- high/low alarm
- high/low warning
Fist to set device address 0xA0 and then choose register address.
Test the reliability of I2C communication.
- USB协议说全速通讯BULK最大包是64Byte。所以USB虚拟串口一次性只能穿不超过64个字节的数据，加上前面8个字节为格式字节，所以一次性传输数据为不超过56个字节。当然可以分包传送更多字节，由上位机实现，如SNOEC_GUI。