BLM_CHEAPO

Defines
#define	NUM_ROWS   8
Functions
s32	BLM_CHEAPO_Init (u32 mode)
s32	BLM_CHEAPO_PrepareCol (void)
s32	BLM_CHEAPO_GetRow (void)
s32	BLM_CHEAPO_ButtonHandler (void *_notify_hook)
s32	BLM_CHEAPO_DebounceSet (u8 delay)
s32	BLM_CHEAPO_DebounceGet (void)
s32	BLM_CHEAPO_DOUT_PinSet (u32 pin, u32 value)
s32	BLM_CHEAPO_DOUT_PinGet (u32 pin)
s32	BLM_CHEAPO_DOUT_SRSet (u32 row, u8 value)
u8	BLM_CHEAPO_DOUT_SRGet (u32 row)

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Detailed Description

BLM_CHEAPO Driver

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Define Documentation

#define NUM_ROWS   8

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Function Documentation

s32 BLM_CHEAPO_ButtonHandler

(

void *

_notify_hook

)

This function should be called from a task to check for button changes periodically. Events (change from 0->1 or from 1->0) will be notified via the given callback function <notify_hook> with following parameters: <notifcation-hook>(s32 pin, s32 value)

Returns:

< 0 on errors

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s32 BLM_CHEAPO_DebounceGet

(

void

)

Returns the debounce delay

Returns:

delay between 0..255 update cycles (usually mS)

s32 BLM_CHEAPO_DebounceSet

(

u8

delay

)

Sets the debounce delay

Parameters:

[in]

delay

between 0..255 update cycles (usually mS)

Returns:

< 0 on errors

s32 BLM_CHEAPO_DOUT_PinGet

(

u32

pin

)

Returns LED status

Parameters:

[in]

pin

the pin number

Returns:

< 0 if pin not available

s32 BLM_CHEAPO_DOUT_PinSet	(	u32	pin,
		u32	value
	)

Sets LED to 0 or Vss

Parameters:

[in]	pin	the pin number
[in]	value	the pin value

Returns:

< 0 if pin not available

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u8 BLM_CHEAPO_DOUT_SRGet

(

u32

row

)

Returns content of red or green "virtual" shift register

Parameters:

[in]	colour	the colour selection (0/1/2)
[in]	sr	the shift register number

Returns:

< 0 if SR not available

s32 BLM_CHEAPO_DOUT_SRSet	(	u32	row,
		u8	value
	)

Sets 8 LEDs of a row at once

Parameters:

[in]	sr	the row number
[in]	value	state of 8 LEDs

Returns:

< 0 if SR not available

s32 BLM_CHEAPO_GetRow

(

void

)

This function gets the button values of the selected row. It should be called from the APP_SRIO_ServiceFinish() hook

Returns:

< 0 on errors

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s32 BLM_CHEAPO_Init

(

u32

mode

)

Initializes the BLM_CHEAPO driver Should be called from Init() during startup

Parameters:

[in]

mode

currently only mode 0 supported

Returns:

< 0 if initialisation failed

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s32 BLM_CHEAPO_PrepareCol

(

void

)

This function services the row selection lines at J15 and the LED output lines at J5A/B It should be called from the APP_SRIO_ServicePrepare()

Returns:

< 0 on errors

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