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Merged
RobTillaart merged 1 commit into from
Oct 12, 2025
Merged

update GitHub actions #19

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4 changes: 2 additions & 2 deletions .github/workflows/arduino-lint.yml
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Expand Up @@ -6,8 +6,8 @@ jobs:
runs-on: ubuntu-latest
timeout-minutes: 5
steps:
- uses: actions/checkout@v4
- uses: arduino/arduino-lint-action@v1
- uses: actions/checkout@v5
- uses: arduino/arduino-lint-action@v2
with:
library-manager: update
compliance: strict
2 changes: 1 addition & 1 deletion .github/workflows/arduino_test_runner.yml
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Expand Up @@ -8,7 +8,7 @@ jobs:
timeout-minutes: 20

steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v5
- uses: ruby/setup-ruby@v1
with:
ruby-version: 2.6
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4 changes: 3 additions & 1 deletion .github/workflows/jsoncheck.yml
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Expand Up @@ -5,13 +5,15 @@ on:
paths:
- '**.json'
pull_request:
paths:
- '**.json'

jobs:
test:
runs-on: ubuntu-latest
timeout-minutes: 5
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v5
- name: json-syntax-check
uses: limitusus/json-syntax-check@v2
with:
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5 changes: 5 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -6,6 +6,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
and this project adheres to [Semantic Versioning](http://semver.org/).


## [0.4.1] - 2025-10-12
- update GitHub actions
- update examples
- minor edits

## [0.4.0] - 2024-09-10
- fix #17, loop unroll option, improving performance, kudos to nt314p
- added flag to select LOOP UNROLL (is optional as it gives larger code size)
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2 changes: 1 addition & 1 deletion FastShiftIn.cpp
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@@ -1,7 +1,7 @@
//
// FILE: FastShiftIn.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.4.0
// VERSION: 0.4.1
// PURPOSE: Fast ShiftIn for 74HC165 register, AVR optimized
// DATE: 2013-09-29
// URL: https://github.com/RobTillaart/FastShiftIn
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4 changes: 2 additions & 2 deletions FastShiftIn.h
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Expand Up @@ -2,7 +2,7 @@
//
// FILE: FastShiftIn.h
// AUTHOR: Rob Tillaart
// VERSION: 0.4.0
// VERSION: 0.4.1
// PURPOSE: Fast ShiftIn for 74HC165 register, AVR optimized
// DATE: 2013-09-29
// URL: https://github.com/RobTillaart/FastShiftIn
Expand All @@ -11,7 +11,7 @@
#include "Arduino.h"


#define FASTSHIFTIN_LIB_VERSION (F("0.4.0"))
#define FASTSHIFTIN_LIB_VERSION (F("0.4.1"))

// uncomment next line to get SPEED OPTIMIZED CODE
// #define FASTSHIFTIN_AVR_LOOP_UNROLLED 1
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2 changes: 1 addition & 1 deletion LICENSE
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@@ -1,6 +1,6 @@
MIT License

Copyright (c) 2013-2024 Rob Tillaart
Copyright (c) 2013-2025 Rob Tillaart

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -163,6 +163,7 @@ pull up resistors, especially if wires are exceeding 10 cm (4").
- performance ESP32
- example schema
- add invert flag?
- value = value ^ 0xFF;
- would it be interesting to make a fastShiftIn16() etc?
- squeeze performance but more maintenance.?

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21 changes: 12 additions & 9 deletions examples/fastShiftIn/fastShiftIn.ino
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Expand Up @@ -15,13 +15,16 @@ volatile int x = 0;
void setup()
{
Serial.begin(115200);
Serial.println(__FILE__);
Serial.println();
Serial.println(__FILE__);
Serial.println("FASTSHIFTIN_LIB_VERSION: ");
Serial.println(FASTSHIFTIN_LIB_VERSION);
Serial.println();

digitalWrite(12, HIGH);
Serial.println("\n 8 bits HIGH\n");
Serial.println("\n 8 bits HIGH\n");

Serial.println("\nPerformance - time in us");
Serial.println("\nPerformance - time in us");
uint32_t start = micros();
for (int i = 0; i < 1000; i++)
{
Expand All @@ -39,9 +42,9 @@ void setup()
}
uint32_t duration2 = micros() - start;
Serial.print("FastShiftIn2: ");
Serial.println(duration2 * 0.001);
Serial.println(duration2 * 0.001f);
Serial.print(" Delta: ");
Serial.println((duration2 - duration1)* 0.001);
Serial.println((duration2 - duration1)* 0.001f);
Serial.println();


Expand All @@ -52,7 +55,7 @@ void setup()
}
duration1 = micros() - start;
Serial.print("Standard shiftIn1: ");
Serial.println(duration1* 0.001);
Serial.println(duration1* 0.001f);

start = micros();
for (int i = 0; i < 1000; i++)
Expand All @@ -62,9 +65,9 @@ void setup()
}
duration2 = micros() - start;
Serial.print("Standard shiftIn2: ");
Serial.println(duration2 * 0.001);
Serial.println(duration2 * 0.001f);
Serial.print(" Delta: ");
Serial.println((duration2 - duration1) * 0.001);
Serial.println((duration2 - duration1) * 0.001f);
Serial.println();

Serial.println("done...");
Expand All @@ -76,5 +79,5 @@ void loop()
}


// -- END OF FILE --
// -- END OF FILE --

17 changes: 10 additions & 7 deletions examples/fastShiftIn_readLSBFIRST/fastShiftIn_readLSBFIRST.ino
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Expand Up @@ -15,8 +15,11 @@ volatile int x = 0;
void setup()
{
Serial.begin(115200);
Serial.println();
Serial.println(__FILE__);
Serial.println("FASTSHIFTIN_LIB_VERSION: ");
Serial.println(FASTSHIFTIN_LIB_VERSION);
Serial.println();

digitalWrite(12, HIGH);
Serial.println("\n 8 bits HIGH - readLSBFIRST\n");
Expand All @@ -29,7 +32,7 @@ void setup()
}
uint32_t duration1 = micros() - start;
Serial.print("FastShiftIn1: ");
Serial.println(duration1 * 0.001);
Serial.println(duration1 * 0.001f);

start = micros();
for (int i = 0; i < 1000; i++)
Expand All @@ -39,9 +42,9 @@ void setup()
}
uint32_t duration2 = micros() - start;
Serial.print("FastShiftIn2: ");
Serial.println(duration2 * 0.001);
Serial.println(duration2 * 0.001f);
Serial.print(" Delta: ");
Serial.println((duration2 - duration1) * 0.001);
Serial.println((duration2 - duration1) * 0.001f);
Serial.println();


Expand All @@ -52,7 +55,7 @@ void setup()
}
duration1 = micros() - start;
Serial.print("Standard shiftIn1: ");
Serial.println(duration1 * 0.001);
Serial.println(duration1 * 0.001f);

start = micros();
for (int i = 0; i < 1000; i++)
Expand All @@ -62,9 +65,9 @@ void setup()
}
duration2 = micros() - start;
Serial.print("Standard shiftIn2: ");
Serial.println(duration2 * 0.001);
Serial.println(duration2 * 0.001f);
Serial.print(" Delta: ");
Serial.println((duration2 - duration1) * 0.001);
Serial.println((duration2 - duration1) * 0.001f);
Serial.println();

Serial.println("done...");
Expand All @@ -76,4 +79,4 @@ void loop()
}


// -- END OF FILE --
// -- END OF FILE --
19 changes: 11 additions & 8 deletions examples/fastShiftIn_readMSBFIRST/fastShiftIn_readMSBFIRST.ino
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Expand Up @@ -15,8 +15,11 @@ volatile int x = 0;
void setup()
{
Serial.begin(115200);
Serial.print("example fastShiftIn: ");
Serial.println();
Serial.println(__FILE__);
Serial.println("FASTSHIFTIN_LIB_VERSION: ");
Serial.println(FASTSHIFTIN_LIB_VERSION);
Serial.println();

digitalWrite(12, HIGH);
Serial.println("\n 8 bits HIGH\n");
Expand All @@ -29,7 +32,7 @@ void setup()
}
uint32_t duration1 = micros() - start;
Serial.print("FastShiftIn1: ");
Serial.println(duration1 * 0.001);
Serial.println(duration1 * 0.001f);

start = micros();
for (int i = 0; i < 1000; i++)
Expand All @@ -39,9 +42,9 @@ void setup()
}
uint32_t duration2 = micros() - start;
Serial.print("FastShiftIn2: ");
Serial.println(duration2 * 0.001);
Serial.println(duration2 * 0.001f);
Serial.print(" Delta: ");
Serial.println((duration2 - duration1) * 0.001);
Serial.println((duration2 - duration1) * 0.001f);
Serial.println();


Expand All @@ -52,7 +55,7 @@ void setup()
}
duration1 = micros() - start;
Serial.print("Standard shiftIn1: ");
Serial.println(duration1 * 0.001);
Serial.println(duration1 * 0.001f);

start = micros();
for (int i = 0; i < 1000; i++)
Expand All @@ -62,9 +65,9 @@ void setup()
}
duration2 = micros() - start;
Serial.print("Standard shiftIn2: ");
Serial.println(duration2 * 0.001);
Serial.println(duration2 * 0.001f);
Serial.print(" Delta: ");
Serial.println((duration2 - duration1) * 0.001);
Serial.println((duration2 - duration1) * 0.001f);
Serial.println();

Serial.println("done...");
Expand All @@ -76,5 +79,5 @@ void loop()
}


// -- END OF FILE --
// -- END OF FILE --

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