fast-SPI.h File Reference

Inline Code Macros with Assembler, that provide fast SPI Bus access. More...

Go to the source code of this file.

Macros
#define	NOP
	No Operation Command. Execution Time is 50ns @ 80MHz (5MHz Crystal). More...
#define	t_NONE
	No extra delay. More...
#define	t_FAST   ; NOP
	t as short as possible. More...
#define	t_SLOW   ; NOP; NOP; NOP
	t which is really slow. More...
#define	tSCLK   t_NONE
	Clock Delay. More...
#define	tCLQV   t_NONE
	CE# Low to Output valid. More...
#define	tDSU   t_NONE
	Data In Setup Time. More...
#define	tCSL   t_NONE
	Chip Select Time. More...
#define	tCSH   ; NOP; NOP
	Chip Deselect Time. More...
#define	tSHWL   ; NOP; NOP
	Write Protect Hold Time. More...
#define	tWHSL   ; NOP; NOP
	Write Protect Setup Time. More...
#define	tHHQX   ; NOP
	Hold To Output Low-Z Time. More...
#define	tHLQZ   ; NOP
	Hold To Output High-Z Time. More...
#define	CHIP_ON
#define	CHIP_OFF
#define	WPn_HIGH
#define	WPn_LOW
#define	CLOCK_HIGH
#define	CLOCK_LOW
#define	SO_HIGH
#define	SO_LOW
#define	HOLDn_HIGH
#define	HOLDn_LOW

Detailed Description

Zerocat Chipflasher — Flash free firmware to BIOS chips, kick the Manageability Engine.

Copyright (C) 2015, 2016, 2017, 2018 Kai Mertens kmx@p.nosp@m.oste.nosp@m.o.net

The Zerocat Chipflasher is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

The Zerocat Chipflasher is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

This file is part of the Zerocat Chipflasher.

Note

Assembler directives are using bits that are within 9-bit address space, thus resulting in propeller port pins 0..8!

Definition in file fast-SPI.h.

Macro Definition Documentation

CHIP_OFF

#define CHIP_OFF

Value:

                        __asm__ volatile \
                        ("andn dira, %0  'tristate, CE# goes high via pull-up" \
                        : /* no outputs */ \
                        : "i" (CEn_AVAIL)) \
                        tCSH

Definition at line 63 of file fast-SPI.h.

CHIP_ON

#define CHIP_ON

Value:

                        __asm__ volatile \
                        ("or dira, %0    'activate output, CE# goes low" \
                        : /* no outputs */ \
                        : "i" (CEn_AVAIL)) \
                        tCSL

Definition at line 57 of file fast-SPI.h.

CLOCK_HIGH

#define CLOCK_HIGH

Value:

                        __asm__ volatile \
                        ("or outa, %0    'clock high" \
                        : /* no outputs */ \
                        : "i" (SCLK_AVAIL)) \
                        tSCLK

Definition at line 81 of file fast-SPI.h.

CLOCK_LOW

#define CLOCK_LOW

Value:

                        __asm__ volatile \
                        ("andn outa, %0  'clock low" \
                        : /* no outputs */ \
                        : "i" (SCLK_AVAIL)) \
                        tSCLK

Definition at line 87 of file fast-SPI.h.

HOLDn_HIGH

#define HOLDn_HIGH

Value:

                        OUTA |= BIT_HOLDn \
                        tHLQZ

Definition at line 118 of file fast-SPI.h.

HOLDn_LOW

#define HOLDn_LOW

Value:

                        OUTA &= ~BIT_HOLDn \
                        tHHQX

Definition at line 121 of file fast-SPI.h.

NOP

#define NOP

Value:

                        __asm__ volatile \
                        ("nop            'delay 50ns" \
                        : /* no outputs */ \
                        : /* no inputs */ )

Definition at line 37 of file fast-SPI.h.

SO_HIGH

#define SO_HIGH

Value:

                        __asm__ volatile \
                        ("or outa, %0    'SO high" \
                        : /* no outputs */ \
                        : "i" (BIT_MOSI)) \
                        tDSU

Definition at line 93 of file fast-SPI.h.

SO_LOW

#define SO_LOW

Value:

                        __asm__ volatile \
                        ("andn outa, %0  'SO low" \
                        : /* no outputs */ \
                        : "i" (BIT_MOSI)) \
                        tDSU

Definition at line 99 of file fast-SPI.h.

t_FAST

#define t_FAST   ; NOP

Definition at line 43 of file fast-SPI.h.

t_NONE

#define t_NONE

Definition at line 42 of file fast-SPI.h.

t_SLOW

#define t_SLOW   ; NOP; NOP; NOP

Definition at line 44 of file fast-SPI.h.

tCLQV

#define tCLQV   t_NONE

Definition at line 47 of file fast-SPI.h.

tCSH

#define tCSH   ; NOP; NOP

Definition at line 51 of file fast-SPI.h.

tCSL

#define tCSL   t_NONE

Definition at line 49 of file fast-SPI.h.

tDSU

#define tDSU   t_NONE

Definition at line 48 of file fast-SPI.h.

tHHQX

#define tHHQX   ; NOP

Definition at line 54 of file fast-SPI.h.

tHLQZ

#define tHLQZ   ; NOP

Definition at line 55 of file fast-SPI.h.

tSCLK

#define tSCLK   t_NONE

Definition at line 46 of file fast-SPI.h.

tSHWL

#define tSHWL   ; NOP; NOP

Definition at line 52 of file fast-SPI.h.

tWHSL

#define tWHSL   ; NOP; NOP

Definition at line 53 of file fast-SPI.h.

WPn_HIGH

#define WPn_HIGH

Value:

                        __asm__ volatile \
                        ("or outa, %0    'WP# high" \
                        : /* no outputs */ \
                        : "i" (BIT_WPn)) \
                        tWHSL

Definition at line 69 of file fast-SPI.h.

WPn_LOW

#define WPn_LOW

Value:

                        __asm__ volatile \
                        ("andn outa, %0  'WP# low" \
                        : /* no outputs */ \
                        : "i" (BIT_WPn)) \
                        tSHWL

Definition at line 75 of file fast-SPI.h.