LeddarTech LeddarSteer, User Manual

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8.2. Slave Mode
8.2.1. Slave Mode 1 (HW Trigger)
In Slave mode 1, the LeddarSteer EVB is waiting for the NEXT signal (external HW trigger) to change DBSD
state ID and give a FEEDBACK signal following a sequence. The RESET signal will reset the sequencing.
This mode will be activated if the LeddarSteer EVB is configured; it is a one-time operation by the user. It is
recommended to send configuration commands using the macro function in TeraTerm
(see section “ 9.4
Macros ” ).
DBSD ready Transition
State time A
State_A
Transi time A
DBSD Status
State_B
DBSD ready Transition
State time B Transi time B
Time
RESET
FEEDBACK
NEXT
State_C
Transition DBSD ready
State_A
High
Low
High
Low
High
Low
Fig. 21: State and transition – Slave mode 1
The configuration commands to send via serial port are: Number of cells, State table (list of cell voltages),
Sequence table (list of state sequencing), Save configuration to memory, and Enable sequencer.
8.2.2. Slave Mode 2 (HW T SPI)
In Slave mode 2, LeddarSteer EVB is waiting for the NEXT signal (external HW trigger) to change DBSD
state ID and give a FEEDBACK signal following a sequence. The difference with Slave mode 1 is that
configuration commands are sent via SPI; DBSD tile sequencing is also sent via SPI. There is no Sequence
table (list of state sequencing) nor State time because all is configured during operation via SPI.
The configuration commands to send via SPI are: Number of cells and State table (list of cell voltages).