include/gpif.h File Reference

#include "fx2types.h"

Go to the source code of this file.

Defines
#define	GPIFDONE   (GPIFTRIG&0x80)
#define	GPIFTC16   (MAKEWORD(GPIFTCB1,GPIFTCB0))
#define	GPIFTC32   (MAKEDWORD(MAKEWORD(GPIFTCB3,GPIFTCB2),MAKEWORD(GPIFTCB1,GPIFTCB0)))
#define	GPIFTRGWR   0
	These defines/functions pretty much out of the TRM 10.4.
#define	GPIFTRGRD   4
Enumerations
enum	GPIF_EP_NUM { GPIF_EP2 = 0, GPIF_EP4 = 1, GPIF_EP6 = 2, GPIF_EP8 = 3 }
Functions
void	gpif_init (BYTE *waveform, BYTE *initdata)
void	gpif_setflowstate (BYTE *flowstates, BYTE bank)
void	gpif_set_tc32 (DWORD tc)
	Simple function to help set the transaction count for gpif transactions.
void	gpif_set_tc16 (WORD tc)
	Simple function to set transaction count for gpif transactions.
void	gpif_single_read16 (WORD *res, WORD len)
void	gpif_single_write16 (WORD *dat, WORD len)
void	gpif_fifo_read (GPIF_EP_NUM ep_num)
void	gpif_fifo_write (GPIF_EP_NUM ep_num)

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Detailed Description

These functions do the same thing that the Cypress gpif designer expored c file does. Instead of including their file directly in your project, you include just the generated waveform data. The gpif2dat script in the utils folder will export your waveform data to a file that can be included in your project.

Definition in file gpif.h.

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Define Documentation

#define GPIFDONE   (GPIFTRIG&0x80)

Definition at line 30 of file gpif.h.

#define GPIFTC16   (MAKEWORD(GPIFTCB1,GPIFTCB0))

Definition at line 31 of file gpif.h.

#define GPIFTC32   (MAKEDWORD(MAKEWORD(GPIFTCB3,GPIFTCB2),MAKEWORD(GPIFTCB1,GPIFTCB0)))

Definition at line 32 of file gpif.h.

#define GPIFTRGRD   4

Definition at line 66 of file gpif.h.

#define GPIFTRGWR   0

These defines/functions pretty much out of the TRM 10.4.

Definition at line 65 of file gpif.h.

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Enumeration Type Documentation

enum GPIF_EP_NUM

Enumerator:

GPIF_EP2
GPIF_EP4
GPIF_EP6
GPIF_EP8

Definition at line 67 of file gpif.h.

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Function Documentation

void gpif_fifo_read

(

GPIF_EP_NUM

ep_num

)

void gpif_fifo_write

(

GPIF_EP_NUM

ep_num

)

void gpif_init	(	BYTE *	waveform,
		BYTE *	initdata
	)

Gpif designer generates a c file with waveform data. Copy the WaveData[128] array and the InitData[7] to your code somewhere Then this function is pretty much the reset of the generated code but ported to sdcc.

uses syncdelay of 4 which might not be long enough if peripheral runs slower than 30mhz. May not affect anything.

IFCONFIG is set with IFCFG[1:0] = 10 for GPIF master but you still have to set the ifclk, polarity, and the rest of the bits

void gpif_set_tc16

(

WORD

tc

)

Simple function to set transaction count for gpif transactions.

Parameters:

tc	16 bit Transaction Count

void gpif_set_tc32

(

DWORD

tc

)

Simple function to help set the transaction count for gpif transactions.

Parameters:

tc	32 bit Transaction Count

void gpif_setflowstate	(	BYTE *	flowstates,
		BYTE	bank
	)

Uses the correct bytes from your flowstates array. This may or may not be needed depending on whether your waveform data uses flowstates. If you don't know if you need them or not, you probably don't.

flowstates should have 36 elements. bank should be 0-3

void gpif_single_read16	(	WORD *	res,
		WORD	len
	)

Use the gpif to read a single word at a time. Read len words and store in res

At least one EPxFIFOCFG has to have wordwide=1 or this functions won't transfer both bytes.

void gpif_single_write16	(	WORD *	dat,
		WORD	len
	)

Use the gpif to write a single word at a time. Write len words from data

At leat one EPxFIFOCFG has to have wordwide=1 or this function won't transfer both bytes.