UM1632 datasheet(14/32 Pages) STMICROELECTRONICS

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Function description

UM1632

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u8 DALI_CheckAndExecuteReceivedCommand(void)

This function should be cyclically called from the main user application in the main program

loop. It:

•

Checks for a pending received DALI packet and, if present, executes the DALI

command in the packet.

•

Returns the execution status:

–

0 = no pending command

–

1 = pending DALI command executed

–

2 = DALI bus error present and processed

u8 DALI_CheckAndExecuteTimer(void)

This function should be cyclically called from the main user application in the main program

loop at least every 1 ms. It:

•

Checks for a pending timer flag and, if present, executes the given timer callbacks

(fading functions, timeouts, etc.).

•

Returns the remaining number of pending 1 ms timer cycles for a given timer task (e.g.,

number of timer cycles to finish light dimming cycle).

void DALI_halt(void)

This function allows activation of the microcontroller Low power state (Halt mode without

timer interrupt). Before calling this function, the user must check that there are no pending

timer cycles and DALI packets.

void DALI_Set_Lamp_Failure(failure)

This function:

•

Sets or resets the failure state of the lighting element (e.g., a damaged bulb).

Table 9. Void DALI_InterruptConfig(void)

Function name

DALI_Init

Description

This function:

•

Configures the used IRQ Channels and sets their priority.

Input Parameter

None

Output Parameter

None

Return

None

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