MIOS32_UART_MIDI

Data Structures
struct	midi_rec_t
Functions
s32	MIOS32_UART_MIDI_Init (u32 mode)
s32	MIOS32_UART_MIDI_CheckAvailable (u8 uart_port)
s32	MIOS32_UART_MIDI_RS_OptimisationSet (u8 uart_port, u8 enable)
s32	MIOS32_UART_MIDI_RS_OptimisationGet (u8 uart_port)
s32	MIOS32_UART_MIDI_RS_Reset (u8 uart_port)
s32	MIOS32_UART_MIDI_Periodic_mS (void)
s32	MIOS32_UART_MIDI_PackageSend_NonBlocking (u8 uart_port, mios32_midi_package_t package)
s32	MIOS32_UART_MIDI_PackageSend (u8 uart_port, mios32_midi_package_t package)
s32	MIOS32_UART_MIDI_PackageReceive (u8 uart_port, mios32_midi_package_t *package)
Variables
u8	midi_rec_t::running_status
u8	midi_rec_t::expected_bytes
u8	midi_rec_t::wait_bytes
u8	midi_rec_t::sysex_ctr
u16	midi_rec_t::timeout_ctr

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Detailed Description

UART MIDI layer for MIOS32

Applications shouldn't call these functions directly, instead please use MIOS32_MIDI layer functions

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Function Documentation

s32 MIOS32_UART_MIDI_CheckAvailable

(

u8

uart_port

)

This function can be used to determine, if a UART interface is available

Parameters:

[in]

uart_port

UART number (0..2)

Returns:

1: interface available

0: interface not available

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

s32 MIOS32_UART_MIDI_Init

(

u32

mode

)

Initializes UART MIDI layer

Parameters:

[in]

mode

currently only mode 0 supported

Returns:

< 0 if initialisation failed

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

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s32 MIOS32_UART_MIDI_PackageReceive	(	u8	uart_port,
		mios32_midi_package_t *	package
	)

This function checks for a new package

Parameters:

[in]	uart_port	UART_MIDI module number (0..2)
[out]	package	pointer to MIDI package (received package will be put into the given variable

Returns:

0: no error

-1: no package in buffer

-10: incoming MIDI package timed out (incomplete package received)

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

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s32 MIOS32_UART_MIDI_PackageSend	(	u8	uart_port,
		mios32_midi_package_t	package
	)

This function sends a new MIDI package to the selected UART_MIDI port (blocking function)

Parameters:

[in]	uart_port	UART_MIDI module number (0..2)
[in]	package	MIDI package

Returns:

0: no error

-1: UART_MIDI device not available

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

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s32 MIOS32_UART_MIDI_PackageSend_NonBlocking	(	u8	uart_port,
		mios32_midi_package_t	package
	)

This function sends a new MIDI package to the selected UART_MIDI port

Parameters:

[in]	uart_port	UART_MIDI module number (0..2)
[in]	package	MIDI package

Returns:

0: no error

-1: UART_MIDI device not available

-2: UART_MIDI buffer is full caller should retry until buffer is free again

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

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s32 MIOS32_UART_MIDI_Periodic_mS

(

void

)

This function should be called periodically each mS to handle timeout and expire counters.

Not for use in an application - this function is called from MIOS32_MIDI_Periodic_mS(), which is called by a task in the programming model!

Returns:

< 0 on errors

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s32 MIOS32_UART_MIDI_RS_OptimisationGet

(

u8

uart_port

)

This function returns the running status optimisation enable/disable flag for the given MIDI OUT port.

Parameters:

[in]

uart_port

UART number (0..2)

Returns:

-1 if port not available

0 if optimisation disabled

1 if optimisation enabled

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

s32 MIOS32_UART_MIDI_RS_OptimisationSet	(	u8	uart_port,
		u8	enable
	)

This function enables/disables running status optimisation for a given MIDI OUT port to improve bandwidth if MIDI events with the same status byte are sent back-to-back.
Note that the optimisation is enabled by default.

Parameters:

[in]	uart_port	UART number (0..2)
[in]	enable	0=optimisation disabled, 1=optimisation enabled

Returns:

-1 if port not available

0 on success

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

s32 MIOS32_UART_MIDI_RS_Reset

(

u8

uart_port

)

This function resets the current running status, so that it will be sent again with the next MIDI Out package.

Parameters:

[in]

uart_port

UART number (0..2)

Returns:

-1 if port not available

< 0 on errors

Note:

Applications shouldn't call this function directly, instead please use MIOS32_MIDI layer functions

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Variable Documentation

u8 midi_rec_t::expected_bytes [inherited]

u8 midi_rec_t::running_status [inherited]

u8 midi_rec_t::sysex_ctr [inherited]

u16 midi_rec_t::timeout_ctr [inherited]

u8 midi_rec_t::wait_bytes [inherited]