MAX72XX

Functions
s32	MAX72XX_Init (u32 mode)
s32	MAX72XX_NumChainsGet (void)
s32	MAX72XX_NumChainsSet (u8 num_chains)
s32	MAX72XX_EnabledGet (u8 chain)
s32	MAX72XX_EnabledSet (u8 chain, u8 enabled)
s32	MAX72XX_NumDevicesPerChainGet (u8 chain)
s32	MAX72XX_NumDevicesPerChainSet (u8 chain, u8 num_devices)
s32	MAX72XX_DigitSet (u8 chain, u8 device, u8 digit, u8 value)
s32	MAX72XX_AllDigitsSet (u8 chain, u8 device, u8 *values)
s32	MAX72XX_DigitGet (u8 chain, u8 device, u8 digit)
s32	MAX72XX_WriteReg (u8 chain, u8 device, u8 reg, u8 value)
s32	MAX72XX_WriteAllRegs (u8 chain, u8 reg, u8 value)
s32	MAX72XX_UpdateDigit (u8 chain, u8 digit)
s32	MAX72XX_UpdateAllDigits (u8 chain)
s32	MAX72XX_UpdateAllChains (void)

---

Detailed Description

MAX72xx module driver

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Function Documentation

s32 MAX72XX_AllDigitsSet	(	u8	chain,
		u8	device,
		u8 *	values
	)

Sets all digits of the given chain and device

s32 MAX72XX_DigitGet	(	u8	chain,
		u8	device,
		u8	digit
	)

Returns a digit of the given chain and device

s32 MAX72XX_DigitSet	(	u8	chain,
		u8	device,
		u8	digit,
		u8	value
	)

Sets a digit of the given chain and device

s32 MAX72XX_EnabledGet

(

u8

chain

)

Returns:

the enable mask for chains which should be scanned

s32 MAX72XX_EnabledSet	(	u8	chain,
		u8	enabled
	)

Sets the enable mask for chains which should be scanned

s32 MAX72XX_Init

(

u32

mode

)

Initializes MAX72xx 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 MAX72XX_NumChainsGet

(

void

)

Returns:

the number of chains which are scanned

s32 MAX72XX_NumChainsSet

(

u8

num_chains

)

Sets the number of chains which should be scanned

Returns:

< 0 on error (e.g. unsupported number of chains)

s32 MAX72XX_NumDevicesPerChainGet

(

u8

chain

)

Returns:

the number of devices per chain which are scanned

s32 MAX72XX_NumDevicesPerChainSet	(	u8	chain,
		u8	num_devices
	)

Sets the number of devices per chain which should be scanned

Returns:

< 0 on error (e.g. unsupported number of devices)

s32 MAX72XX_UpdateAllChains

(

void

)

Updates all chains

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s32 MAX72XX_UpdateAllDigits

(

u8

chain

)

Updates all digits of the given chain

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s32 MAX72XX_UpdateDigit	(	u8	chain,
		u8	digit
	)

Updates a digit (0..7) of the given chain

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s32 MAX72XX_WriteAllRegs	(	u8	chain,
		u8	reg,
		u8	value
	)

Load a 8bit value into all MAX72XX devices of the given chain

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s32 MAX72XX_WriteReg	(	u8	chain,
		u8	device,
		u8	reg,
		u8	value
	)

Load a 16bit value into a selected MAX72XX device of the given chain

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