Documentation

I2C Commands

Command Name	Description	Byte value(s)
CMD_ACK	Ask the slave if the last command was successfully received	0x01
SET_TIME	Set slave's time to match master's one	0x02, value (4 bytes)
RESEND	Resend the content of last request	0xFF
GET_GPS	Get the current GPS position of the Solex	0x10
GET_VOLT	Get the current tension of the Solex's battery	0x11
GET_TEMP	Get the current temperature of the Solex's battery	0x12

I2C Requests

Previous Command Name	Description	Byte value(s)
CMD_ACK	Tell the master if the last command (different from CMD_ACK) was successfully recieved	0x01 if last command was successfull, 0xFF otherwise
RESEND	Resend the content of the last request to the master
GET_GPS	Send the current GPS position of the Solex	timestamp (15 bytes) latitude (4 bytes) longitude (4 bytes)
GET_VOLT	Send the current tension of the Solex's battery	timestamp (15 bytes) tension (4 bytes)
GET_TEMP	Send the current temperature of the Solex's battery	timestamp (15 bytes) temperature (4 bytes)

It is forbidden to define a request that can send to the master an answer of length 1 with the byte 0x00 because it is the code that notify the master that last command was not send successfully and should thus be sent again.

Sensor Ids

Id	Sensor
0	Drive message
1	GPS
2	Tension
3	Temperature