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Better handling of DELAY_NS and DELAY_US (#10717) 

Co-Authored-By: ejtagle <ejtagle@hotmail.com>
This commit is contained in:
Scott Lahteine 2018-05-12 04:22:55 -05:00 committed by GitHub
parent 0aa791d62b
commit 039302bf4c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 166 additions and 132 deletions
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15
Marlin/Conditionals_LCD.h
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@ -111,13 +111,13 @@
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_2_NOP
#define ST7920_DELAY_1 DELAY_NS(125)
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_2_NOP
#define ST7920_DELAY_2 DELAY_NS(125)
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_2_NOP
#define ST7920_DELAY_3 DELAY_NS(125)
#endif
#elif ENABLED(MKS_12864OLED)
@ -290,6 +290,10 @@
#endif
#endif
#if ENABLED(NO_LCD_MENUS)
#undef ULTIPANEL
#endif
#if ENABLED(ULTIPANEL)
#define NEWPANEL // Disable this if you actually have no click-encoder panel
#define ULTRA_LCD
@ -367,11 +371,6 @@
#endif
#endif
#if ENABLED(NO_LCD_MENUS)
#undef ULTIPANEL
#undef NEWPANEL
#endif
// Boot screens
#if DISABLED(ULTRA_LCD)
#undef SHOW_BOOTSCREEN

3
Marlin/Max7219_Debug_LEDs.cpp
View File

@ -60,11 +60,12 @@
#include "planner.h"
#include "stepper.h"
#include "Marlin.h"
#include "delay.h"
static uint8_t LEDs[8] = { 0 };
// Delay for 0.1875µs (16MHz AVR) or 0.15µs (20MHz AVR)
#define SIG_DELAY() DELAY_3_NOP
#define SIG_DELAY() DELAY_NS(188)
void Max7219_PutByte(uint8_t data) {
CRITICAL_SECTION_START

77
Marlin/delay.h Normal file
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@ -0,0 +1,77 @@
/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program 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.
*
* This program 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/>.
*
*/
/**
* AVR busy wait delay Cycles routines:
*
* DELAY_CYCLES(count): Delay execution in cycles
* DELAY_NS(count): Delay execution in nanoseconds
* DELAY_US(count): Delay execution in microseconds
*/
#ifndef MARLIN_DELAY_H
#define MARLIN_DELAY_H
#define nop() __asm__ __volatile__("nop;\n\t":::)
FORCE_INLINE static void __delay_4cycles(uint8_t cy) {
__asm__ __volatile__(
L("1")
A("dec %[cnt]")
A("nop")
A("brne 1b")
: [cnt] "+r"(cy) // output: +r means input+output
: // input:
: "cc" // clobbers:
);
}
/* ---------------- Delay in cycles */
FORCE_INLINE static void DELAY_CYCLES(uint16_t x) {
if (__builtin_constant_p(x)) {
#define MAXNOPS 4
if (x <= (MAXNOPS)) {
switch (x) { case 4: nop(); case 3: nop(); case 2: nop(); case 1: nop(); }
}
else {
const uint32_t rem = (x) % (MAXNOPS);
switch (rem) { case 3: nop(); case 2: nop(); case 1: nop(); }
if ((x = (x) / (MAXNOPS)))
__delay_4cycles(x); // if need more then 4 nop loop is more optimal
}
#undef MAXNOPS
}
else
__delay_4cycles(x / 4);
}
#undef nop
/* ---------------- Delay in nanoseconds */
#define DELAY_NS(x) DELAY_CYCLES( (x) * (F_CPU/1000000L) / 1000L )
/* ---------------- Delay in microseconds */
#define DELAY_US(x) DELAY_CYCLES( (x) * (F_CPU/1000000L) )
#endif // MARLIN_DELAY_H

61
Marlin/macros.h
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@ -57,58 +57,8 @@
#define CYCLES_PER_MICROSECOND (F_CPU / 1000000L) // 16 or 20
#define INT0_PRESCALER 8
// Processor-level delays for hardware interfaces
#ifndef _NOP
#define _NOP() do { __asm__ volatile ("nop"); } while (0)
#endif
#define DELAY_NOPS(X) \
switch (X) { \
case 20: _NOP(); case 19: _NOP(); case 18: _NOP(); case 17: _NOP(); \
case 16: _NOP(); case 15: _NOP(); case 14: _NOP(); case 13: _NOP(); \
case 12: _NOP(); case 11: _NOP(); case 10: _NOP(); case 9: _NOP(); \
case 8: _NOP(); case 7: _NOP(); case 6: _NOP(); case 5: _NOP(); \
case 4: _NOP(); case 3: _NOP(); case 2: _NOP(); case 1: _NOP(); \
}
#define DELAY_0_NOP NOOP
#define DELAY_1_NOP DELAY_NOPS( 1)
#define DELAY_2_NOP DELAY_NOPS( 2)
#define DELAY_3_NOP DELAY_NOPS( 3)
#define DELAY_4_NOP DELAY_NOPS( 4)
#define DELAY_5_NOP DELAY_NOPS( 5)
#define DELAY_10_NOP DELAY_NOPS(10)
#define DELAY_20_NOP DELAY_NOPS(20)
#if CYCLES_PER_MICROSECOND <= 200
#define DELAY_100NS DELAY_NOPS((CYCLES_PER_MICROSECOND + 9) / 10)
#else
#define DELAY_100NS DELAY_20_NOP
#endif
// Microsecond delays for hardware interfaces
#if CYCLES_PER_MICROSECOND <= 20
#define DELAY_1US DELAY_NOPS(CYCLES_PER_MICROSECOND)
#define DELAY_US(X) \
switch (X) { \
case 20: DELAY_1US; case 19: DELAY_1US; case 18: DELAY_1US; case 17: DELAY_1US; \
case 16: DELAY_1US; case 15: DELAY_1US; case 14: DELAY_1US; case 13: DELAY_1US; \
case 12: DELAY_1US; case 11: DELAY_1US; case 10: DELAY_1US; case 9: DELAY_1US; \
case 8: DELAY_1US; case 7: DELAY_1US; case 6: DELAY_1US; case 5: DELAY_1US; \
case 4: DELAY_1US; case 3: DELAY_1US; case 2: DELAY_1US; case 1: DELAY_1US; \
}
#else
#define DELAY_US(X) delayMicroseconds(X) // May not be usable in CRITICAL_SECTION
#define DELAY_1US DELAY_US(1)
#endif
#define DELAY_2US DELAY_US( 2)
#define DELAY_3US DELAY_US( 3)
#define DELAY_4US DELAY_US( 4)
#define DELAY_5US DELAY_US( 5)
#define DELAY_6US DELAY_US( 6)
#define DELAY_7US DELAY_US( 7)
#define DELAY_8US DELAY_US( 8)
#define DELAY_9US DELAY_US( 9)
#define DELAY_10US DELAY_US(10)
#define DELAY_20US DELAY_US(20)
// Nanoseconds per cycle
#define NANOSECONDS_PER_CYCLE (1000000000.0 / F_CPU)
// Remove compiler warning on an unused variable
#define UNUSED(x) (void) (x)
@ -122,7 +72,7 @@
// Macros for bit masks
#undef _BV
#define _BV(b) (1<<(b))
#define _BV(b) (1 << (b))
#define TEST(n,b) !!((n)&_BV(b))
#define SBI(n,b) (n |= _BV(b))
#define CBI(n,b) (n &= ~_BV(b))
@ -152,6 +102,7 @@
// Macros to contrain values
#define NOLESS(v,n) do{ if (v < n) v = n; }while(0)
#define NOMORE(v,n) do{ if (v > n) v = n; }while(0)
#define LIMIT(v,n1,n2) do{ if (v < n1) v = n1; else if (v > n2) v = n2; }while(0)
// Macros to support option testing
#define _CAT(a, ...) a ## __VA_ARGS__
@ -159,9 +110,11 @@
#define SWITCH_ENABLED_true 1
#define SWITCH_ENABLED_0 0
#define SWITCH_ENABLED_1 1
#define SWITCH_ENABLED_0x0 0
#define SWITCH_ENABLED_0x1 1
#define SWITCH_ENABLED_ 1
#define ENABLED(b) _CAT(SWITCH_ENABLED_, b)
#define DISABLED(b) (!_CAT(SWITCH_ENABLED_, b))
#define DISABLED(b) !ENABLED(b)
#define WITHIN(V,L,H) ((V) >= (L) && (V) <= (H))
#define NUMERIC(a) WITHIN(a, '0', '9')

12
Marlin/pins_ANET_10.h
View File

@ -153,7 +153,7 @@
#if ENABLED(ULTRA_LCD) && ENABLED(NEWPANEL)
#define LCD_SDSS 28
#if ENABLED(ADC_KEYPAD)
#define SERVO0_PIN 27 // free for BLTouch/3D-Touch
#define SERVO0_PIN 27 // free for BLTouch/3D-Touch
#define LCD_PINS_RS 28
#define LCD_PINS_ENABLE 29
#define LCD_PINS_D4 10
@ -168,7 +168,7 @@
// Pin definitions for the Anet A6 Full Graphics display and the RepRapDiscount Full Graphics
// display using an adapter board // https://go.aisler.net/benlye/anet-lcd-adapter/pcb
// See below for alternative pin definitions for use with https://www.thingiverse.com/thing:2103748
#define SERVO0_PIN 29 // free for BLTouch/3D-Touch
#define SERVO0_PIN 29 // free for BLTouch/3D-Touch
#define BEEPER_PIN 17
#define LCD_PINS_RS 27
#define LCD_PINS_ENABLE 28
@ -177,13 +177,13 @@
#define BTN_EN2 10
#define BTN_ENC 16
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#define ST7920_DELAY_1 DELAY_NS(0)
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_1_NOP
#define ST7920_DELAY_2 DELAY_NS(63)
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_2_NOP
#define ST7920_DELAY_3 DELAY_NS(125)
#endif
#define STD_ENCODER_PULSES_PER_STEP 4
#define STD_ENCODER_STEPS_PER_MENU_ITEM 1
@ -201,7 +201,7 @@
* published by oderwat on Thingiverse at https://www.thingiverse.com/thing:2103748.
*
* Using that adapter requires changing the pin definition as follows:
* #define SERVO0_PIN 27 // free for BLTouch/3D-Touch
* #define SERVO0_PIN 27 // free for BLTouch/3D-Touch
* #define BEEPER_PIN 28
* #define LCD_PINS_RS 30
* #define LCD_PINS_ENABLE 29

6
Marlin/pins_MELZI_CREALITY.h
View File

@ -55,13 +55,13 @@
// Alter timing for graphical display
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_2_NOP
#define ST7920_DELAY_1 DELAY_NS(125)
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_2_NOP
#define ST7920_DELAY_2 DELAY_NS(125)
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_2_NOP
#define ST7920_DELAY_3 DELAY_NS(125)
#endif
#if ENABLED(MINIPANEL)

6
Marlin/pins_MELZI_MALYAN.h
View File

@ -44,11 +44,11 @@
// Alter timing for graphical display
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_2_NOP
#define ST7920_DELAY_1 DELAY_NS(125)
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_2_NOP
#define ST7920_DELAY_2 DELAY_NS(125)
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_2_NOP
#define ST7920_DELAY_3 DELAY_NS(125)
#endif

6
Marlin/pins_MELZI_TRONXY.h
View File

@ -51,11 +51,11 @@
#define BTN_ENC 26
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#define ST7920_DELAY_1 DELAY_NS(0)
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_2_NOP
#define ST7920_DELAY_2 DELAY_NS(125)
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_0_NOP
#define ST7920_DELAY_3 DELAY_NS(0)
#endif

6
Marlin/pins_PRINTRBOARD_REVF.h
View File

@ -244,13 +244,13 @@
// increase delays
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_5_NOP
#define ST7920_DELAY_1 DELAY_NS(313)
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_5_NOP
#define ST7920_DELAY_2 DELAY_NS(313)
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_5_NOP
#define ST7920_DELAY_3 DELAY_NS(313)
#endif
#else

6
Marlin/pins_SANGUINOLOLU_11.h
View File

@ -239,13 +239,13 @@
#define BTN_EN2 30
#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_0_NOP
#define ST7920_DELAY_1 DELAY_NS(0)
#endif
#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_3_NOP
#define ST7920_DELAY_2 DELAY_NS(188)
#endif
#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_0_NOP
#define ST7920_DELAY_3 DELAY_NS(0)
#endif
#elif ENABLED(ZONESTAR_LCD) // For the Tronxy Melzi boards

15
Marlin/stepper.cpp
View File

@ -61,6 +61,7 @@
#include "language.h"
#include "cardreader.h"
#include "speed_lookuptable.h"
#include "delay.h"
#if HAS_DIGIPOTSS
#include <SPI.h>
@ -1455,7 +1456,7 @@ void Stepper::isr() {
while (EXTRA_CYCLES_XYZE > (uint32_t)(TCNT0 - pulse_start) * (INT0_PRESCALER)) { /* nada */ }
pulse_start = TCNT0;
#elif EXTRA_CYCLES_XYZE > 0
DELAY_NOPS(EXTRA_CYCLES_XYZE);
DELAY_NS(EXTRA_CYCLES_XYZE * NANOSECONDS_PER_CYCLE);
#endif
#if HAS_X_STEP
@ -1490,7 +1491,7 @@ void Stepper::isr() {
#if EXTRA_CYCLES_XYZE > 20
if (i) while (EXTRA_CYCLES_XYZE > (uint32_t)(TCNT0 - pulse_start) * (INT0_PRESCALER)) { /* nada */ }
#elif EXTRA_CYCLES_XYZE > 0
if (i) DELAY_NOPS(EXTRA_CYCLES_XYZE);
if (i) DELAY_NS(EXTRA_CYCLES_XYZE * NANOSECONDS_PER_CYCLE);
#endif
} // steps_loop
@ -1714,7 +1715,7 @@ void Stepper::isr() {
while (EXTRA_CYCLES_E > (uint32_t)(TCNT0 - pulse_start) * (INT0_PRESCALER)) { /* nada */ }
pulse_start = TCNT0;
#elif EXTRA_CYCLES_E > 0
DELAY_NOPS(EXTRA_CYCLES_E);
DELAY_NS(EXTRA_CYCLES_E * NANOSECONDS_PER_CYCLE);
#endif
switch (LA_active_extruder) {
@ -1737,7 +1738,7 @@ void Stepper::isr() {
#if EXTRA_CYCLES_E > 20
if (e_steps) while (EXTRA_CYCLES_E > (uint32_t)(TCNT0 - pulse_start) * (INT0_PRESCALER)) { /* nada */ }
#elif EXTRA_CYCLES_E > 0
if (e_steps) DELAY_NOPS(EXTRA_CYCLES_E);
if (e_steps) DELAY_NS(EXTRA_CYCLES_E * NANOSECONDS_PER_CYCLE);
#endif
} // e_steps
@ -2113,13 +2114,13 @@ void Stepper::report_positions() {
#else
#define _SAVE_START NOOP
#if EXTRA_CYCLES_BABYSTEP > 0
#define _PULSE_WAIT DELAY_NOPS(EXTRA_CYCLES_BABYSTEP)
#define _PULSE_WAIT DELAY_NS(EXTRA_CYCLES_BABYSTEP * NANOSECONDS_PER_CYCLE)
#elif STEP_PULSE_CYCLES > 0
#define _PULSE_WAIT NOOP
#elif ENABLED(DELTA)
#define _PULSE_WAIT delayMicroseconds(2);
#define _PULSE_WAIT DELAY_US(2);
#else
#define _PULSE_WAIT delayMicroseconds(4);
#define _PULSE_WAIT DELAY_US(4);
#endif
#endif

3
Marlin/temperature.cpp
View File

@ -31,6 +31,7 @@
#include "planner.h"
#include "language.h"
#include "printcounter.h"
#include "delay.h"
#if ENABLED(HEATER_0_USES_MAX6675)
#include "MarlinSPI.h"
@ -1611,7 +1612,7 @@ void Temperature::disable_all_heaters() {
WRITE(MAX6675_SS, 0); // enable TT_MAX6675
DELAY_100NS; // Ensure 100ns delay
DELAY_NS(100); // Ensure 100ns delay
// Read a big-endian temperature value
max6675_temp = 0;

41
Marlin/ultralcd_st7565_u8glib_VIKI.h
View File

@ -24,6 +24,7 @@
#define ULCDST7565_H
#include <U8glib.h>
#include "delay.h"
#define ST7565_CLK_PIN DOGLCD_SCK
#define ST7565_DAT_PIN DOGLCD_MOSI
@ -38,9 +39,9 @@
#pragma GCC optimize (3)
// If you want you can define your own set of delays in Configuration.h
//#define ST7565_DELAY_1 DELAY_0_NOP
//#define ST7565_DELAY_2 DELAY_0_NOP
//#define ST7565_DELAY_3 DELAY_0_NOP
//#define ST7565_DELAY_1 DELAY_NS(0)
//#define ST7565_DELAY_2 DELAY_NS(0)
//#define ST7565_DELAY_3 DELAY_NS(0)
/*
#define ST7565_DELAY_1 u8g_10MicroDelay()
@ -49,25 +50,25 @@
*/
#if F_CPU >= 20000000
#define CPU_ST7565_DELAY_1 DELAY_0_NOP
#define CPU_ST7565_DELAY_2 DELAY_0_NOP
#define CPU_ST7565_DELAY_3 DELAY_1_NOP
#define CPU_ST7565_DELAY_1 DELAY_NS(0)
#define CPU_ST7565_DELAY_2 DELAY_NS(0)
#define CPU_ST7565_DELAY_3 DELAY_NS(63)
#elif MB(3DRAG) || MB(K8200) || MB(K8400)
#define CPU_ST7565_DELAY_1 DELAY_0_NOP
#define CPU_ST7565_DELAY_2 DELAY_3_NOP
#define CPU_ST7565_DELAY_3 DELAY_0_NOP
#define CPU_ST7565_DELAY_1 DELAY_NS(0)
#define CPU_ST7565_DELAY_2 DELAY_NS(188)
#define CPU_ST7565_DELAY_3 DELAY_NS(0)
#elif MB(MINIRAMBO)
#define CPU_ST7565_DELAY_1 DELAY_0_NOP
#define CPU_ST7565_DELAY_2 DELAY_4_NOP
#define CPU_ST7565_DELAY_3 DELAY_0_NOP
#define CPU_ST7565_DELAY_1 DELAY_NS(0)
#define CPU_ST7565_DELAY_2 DELAY_NS(250)
#define CPU_ST7565_DELAY_3 DELAY_NS(0)
#elif MB(RAMBO)
#define CPU_ST7565_DELAY_1 DELAY_0_NOP
#define CPU_ST7565_DELAY_2 DELAY_0_NOP
#define CPU_ST7565_DELAY_3 DELAY_0_NOP
#define CPU_ST7565_DELAY_1 DELAY_NS(0)
#define CPU_ST7565_DELAY_2 DELAY_NS(0)
#define CPU_ST7565_DELAY_3 DELAY_NS(0)
#elif F_CPU == 16000000
#define CPU_ST7565_DELAY_1 DELAY_0_NOP
#define CPU_ST7565_DELAY_2 DELAY_0_NOP
#define CPU_ST7565_DELAY_3 DELAY_1_NOP
#define CPU_ST7565_DELAY_1 DELAY_NS(0)
#define CPU_ST7565_DELAY_2 DELAY_NS(0)
#define CPU_ST7565_DELAY_3 DELAY_NS(63)
#else
#error "No valid condition for delays in 'ultralcd_st7565_u8glib_VIKI.h'"
#endif
@ -115,8 +116,8 @@
#endif // !HARDWARE_SPI
#if defined(DOGM_SPI_DELAY_US) && DOGM_SPI_DELAY_US > 0
#define U8G_DELAY() delayMicroseconds(DOGM_SPI_DELAY_US)
#if DOGM_SPI_DELAY_US > 0
#define U8G_DELAY() DELAY_US(DOGM_SPI_DELAY_US)
#else
#define U8G_DELAY() u8g_10MicroDelay()
#endif

41
Marlin/ultralcd_st7920_u8glib_rrd.h
View File

@ -24,6 +24,7 @@
#define ULCDST7920_H
#include <U8glib.h>
#include "delay.h"
#define ST7920_CLK_PIN LCD_PINS_D4
#define ST7920_DAT_PIN LCD_PINS_ENABLE
@ -40,30 +41,30 @@
#pragma GCC optimize (3)
// If you want you can define your own set of delays in Configuration.h
//#define ST7920_DELAY_1 DELAY_0_NOP
//#define ST7920_DELAY_2 DELAY_0_NOP
//#define ST7920_DELAY_3 DELAY_0_NOP
//#define ST7920_DELAY_1 DELAY_NS(0)
//#define ST7920_DELAY_2 DELAY_NS(0)
//#define ST7920_DELAY_3 DELAY_NS(0)
#if F_CPU >= 20000000
#define CPU_ST7920_DELAY_1 DELAY_0_NOP
#define CPU_ST7920_DELAY_2 DELAY_0_NOP
#define CPU_ST7920_DELAY_3 DELAY_1_NOP
#define CPU_ST7920_DELAY_1 DELAY_NS(0)
#define CPU_ST7920_DELAY_2 DELAY_NS(0)
#define CPU_ST7920_DELAY_3 DELAY_NS(50)
#elif MB(3DRAG) || MB(K8200) || MB(K8400) || MB(SILVER_GATE)
#define CPU_ST7920_DELAY_1 DELAY_0_NOP
#define CPU_ST7920_DELAY_2 DELAY_3_NOP
#define CPU_ST7920_DELAY_3 DELAY_0_NOP
#define CPU_ST7920_DELAY_1 DELAY_NS(0)
#define CPU_ST7920_DELAY_2 DELAY_NS(188)
#define CPU_ST7920_DELAY_3 DELAY_NS(0)
#elif MB(MINIRAMBO)
#define CPU_ST7920_DELAY_1 DELAY_0_NOP
#define CPU_ST7920_DELAY_2 DELAY_4_NOP
#define CPU_ST7920_DELAY_3 DELAY_0_NOP
#define CPU_ST7920_DELAY_1 DELAY_NS(0)
#define CPU_ST7920_DELAY_2 DELAY_NS(250)
#define CPU_ST7920_DELAY_3 DELAY_NS(0)
#elif MB(RAMBO)
#define CPU_ST7920_DELAY_1 DELAY_0_NOP
#define CPU_ST7920_DELAY_2 DELAY_0_NOP
#define CPU_ST7920_DELAY_3 DELAY_0_NOP
#define CPU_ST7920_DELAY_1 DELAY_NS(0)
#define CPU_ST7920_DELAY_2 DELAY_NS(0)
#define CPU_ST7920_DELAY_3 DELAY_NS(0)
#elif F_CPU == 16000000
#define CPU_ST7920_DELAY_1 DELAY_0_NOP
#define CPU_ST7920_DELAY_2 DELAY_0_NOP
#define CPU_ST7920_DELAY_3 DELAY_1_NOP
#define CPU_ST7920_DELAY_1 DELAY_NS(0)
#define CPU_ST7920_DELAY_2 DELAY_NS(0)
#define CPU_ST7920_DELAY_3 DELAY_NS(63)
#else
#error "No valid condition for delays in 'ultralcd_st7920_u8glib_rrd.h'"
#endif
@ -95,8 +96,8 @@ static void ST7920_SWSPI_SND_8BIT(uint8_t val) {
ST7920_SND_BIT; // 8
}
#if defined(DOGM_SPI_DELAY_US) && DOGM_SPI_DELAY_US > 0
#define U8G_DELAY() delayMicroseconds(DOGM_SPI_DELAY_US)
#if DOGM_SPI_DELAY_US > 0
#define U8G_DELAY() DELAY_US(DOGM_SPI_DELAY_US)
#else
#define U8G_DELAY() u8g_10MicroDelay()
#endif