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https://github.com/xreef/PCF8574_library.git
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Fix STM32 support and add support for Raspberry Pi Pico and other rp2040 boards
This commit is contained in:
Renzo Mischianti
parent
c49ffd7aeb
commit
70c7838e02
10
PCF8574.cpp
10
PCF8574.cpp
@ -53,7 +53,7 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
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_usingInterrupt = true;
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};
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#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(ARDUINO_ARCH_STM32) && !defined(TEENSYDUINO)
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#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(TEENSYDUINO)
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/**
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* Constructor
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* @param address: i2c address
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@ -90,7 +90,7 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
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};
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#endif
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#if defined(ESP32) || defined(ARDUINO_ARCH_SAMD)
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#if defined(ESP32) || defined(ARDUINO_ARCH_SAMD)|| defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_STM32)
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/**
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* Constructor
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* @param address: i2c address
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@ -186,11 +186,15 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
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*/
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bool PCF8574::begin(){
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this->transmissionStatus = 4;
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#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(ARDUINO_ARCH_STM32) && !defined(TEENSYDUINO)
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#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(TEENSYDUINO)
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DEBUG_PRINT(F("begin(sda, scl) -> "));DEBUG_PRINT(_sda);DEBUG_PRINT(F(" "));DEBUG_PRINTLN(_scl);
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// _wire->begin(_sda, _scl);
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#ifdef ARDUINO_ARCH_STM32
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_wire->begin((uint32_t)_sda, (uint32_t)_scl);
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#elif defined(ARDUINO_ARCH_RP2040)
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_wire->setSCL(_scl);
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_wire->setSDA(_sda);
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_wire->begin();
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#else
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_wire->begin((int)_sda, (int)_scl);
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#endif
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@ -2,7 +2,7 @@
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* PCF8574 GPIO Port Expand
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*
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* AUTHOR: Renzo Mischianti
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* VERSION: 2.3.4
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* VERSION: 2.3.5
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*
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* https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/
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*
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@ -109,12 +109,12 @@ public:
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PCF8574(uint8_t address);
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PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunction)() );
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#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(ARDUINO_ARCH_STM32) && !defined(TEENSYDUINO)
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#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(TEENSYDUINO)
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PCF8574(uint8_t address, int sda, int scl);
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PCF8574(uint8_t address, int sda, int scl, uint8_t interruptPin, void (*interruptFunction)());
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#endif
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#if defined(ESP32) || defined(ARDUINO_ARCH_SAMD)
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#if defined(ESP32) || defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_STM32)
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///// changes for second i2c bus
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PCF8574(TwoWire *pWire, uint8_t address);
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PCF8574(TwoWire *pWire, uint8_t address, uint8_t interruptPin, void (*interruptFunction)() );
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@ -2,7 +2,7 @@
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* PCF8574 GPIO Port Expand
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*
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* AUTHOR: Renzo Mischianti
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* VERSION: 2.3.4
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* VERSION: 2.3.5
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*
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* https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/
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*
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35
README.md
35
README.md
@ -9,37 +9,28 @@
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align="right"></a>
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</div>
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#
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#
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#
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#
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#
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#
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### Additional information and documentation on my site: [pcf8574 Article](https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/).
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### If you need more pins [here](https://www.mischianti.org/2019/07/22/pcf8575-i2c-16-bit-digital-i-o-expander/) you can find the pcf8575 16bit version of the IC.
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# PCF8574 PCF8574AP digital input and output expander with i2c bus.
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#### Complete documentation on my site: [pcf8574 Article](https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/).
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### Version 2.2
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Library to use I2C analog IC with arduino and esp8266. Can read and write digital value with only 2 wires (perfect for ESP-01).
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Tutorial:
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To download. click the DOWNLOADS button in the top right corner, rename the uncompressed folder PCF8574. Check that the PCF8574 folder contains `PCF8574\\.cpp` and `PCF8574.h`. Place the DHT library folder your `<arduinosketchfolder>/libraries/` folder. You may need to create the libraries subfolder if its your first library. Restart the IDE.
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#### If you need more pins [here](https://www.mischianti.org/2019/07/22/pcf8575-i2c-16-bit-digital-i-o-expander/) you can find the pcf8575 16bit version of the IC.
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## Changelog
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10/08/2022: v2.3.4 Add support for custom SERCOM interface of Arduino SAMD devices. Force SDA SCL to use GPIO numeration for STM32 bug (https://www.mischianti.org/forums/topic/compatible-with-stm32duino/).
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28/07/2022: v2.3.3 Force SDA SCL to use GPIO numeration (https://www.mischianti.org/forums/topic/cannot-set-sda-clk-on-esp8266/).
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28/07/2022: v2.3.2 Fix the SDA SCL type #58 and add basic support for SAMD device.
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26/04/2022: v2.3.1 Fix example for esp32 and double begin issue #56.
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06/04/2022: v2.3.0 Fix package size
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30/12/2021: v2.2.4 Minor fix and remove deprecated declaration
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23/11/2020: v2.2.2 Add multiple implementation for encoder management (you can enable by uncomment relative define)
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- 08/02/2023: v2.3.5 Fix STM32 support and add support for Raspberry Pi Pico and other rp2040 boards
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- 10/08/2022: v2.3.4 Add support for custom SERCOM interface of Arduino SAMD devices. Force SDA SCL to use GPIO numeration for STM32 bug (https://www.mischianti.org/forums/topic/compatible-with-stm32duino/).
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- 28/07/2022: v2.3.3 Force SDA SCL to use GPIO numeration (https://www.mischianti.org/forums/topic/cannot-set-sda-clk-on-esp8266/).
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- 28/07/2022: v2.3.2 Fix the SDA SCL type #58 and add basic support for SAMD device.
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- 26/04/2022: v2.3.1 Fix example for esp32 and double begin issue #56.
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- 06/04/2022: v2.3.0 Fix package size
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- 30/12/2021: v2.2.4 Minor fix and remove deprecated declaration
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- 23/11/2020: v2.2.2 Add multiple implementation for encoder management (you can enable by uncomment relative define)
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# Reef complete PCF8574 PCF8574AP digital input and output expander with i2c bus.
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I try to simplify the use of this IC, with a minimal set of operations.
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Tested with esp8266, esp32, Arduino, Arduino SAMD (Nano 33 IoT, MKR etc.), STM32 and rp2040 (Raspberry Pi Pico and similar)
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PCF8574P address map 0x20-0x27
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PCF8574AP address map 0x38-0x3f
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@ -1,6 +1,6 @@
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{
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"name": "PCF8574 library",
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"version": "2.3.4",
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"version": "2.3.5",
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"keywords": "digital, i2c, encoder, expander, pcf8574, pcf8574a, esp32, esp8266, stm32, SAMD, Arduino, wire",
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"description": "Most starred PCF8574 library. i2c digital expander for Arduino, esp32, SMT32 and ESP8266. Can read write digital values with only 2 wire. Very simple to use and encoder support.",
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"homepage": "https://www.mischianti.org/category/my-libraries/pcf8574/",
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@ -1,5 +1,5 @@
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name=PCF8574 library
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version=2.3.4
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version=2.3.5
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author=Renzo Mischianti <renzo.mischianti@gmail.com>
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maintainer=Renzo Mischianti <renzo.mischianti@gmail.com>
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sentence=Most starred PCF8574 library for Arduino (standard and SAMD), ESP8266, smt32 and esp32
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