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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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This commit is contained in:
Renzo Mischianti 2022-08-10 10:18:33 +02:00
parent 77d04961ed
commit de00a4e005
6 changed files with 24 additions and 17 deletions
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13
PCF8574.cpp
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@ -53,7 +53,7 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
_usingInterrupt = true; _usingInterrupt = true;
}; };
#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(__STM32F1__) && !defined(TEENSYDUINO) #if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(ARDUINO_ARCH_STM32) && !defined(TEENSYDUINO)
/** /**
* Constructor * Constructor
* @param address: i2c address * @param address: i2c address
@ -90,7 +90,7 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
}; };
#endif #endif
#ifdef ESP32 #if defined(ESP32) || defined(ARDUINO_ARCH_SAMD)
/** /**
* Constructor * Constructor
* @param address: i2c address * @param address: i2c address
@ -115,7 +115,8 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
_interruptFunction = interruptFunction; _interruptFunction = interruptFunction;
_usingInterrupt = true; _usingInterrupt = true;
}; };
#endif
#if defined(ESP32)
/** /**
* Constructor * Constructor
* @param address: i2c address * @param address: i2c address
@ -185,10 +186,14 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
*/ */
bool PCF8574::begin(){ bool PCF8574::begin(){
this->transmissionStatus = 4; this->transmissionStatus = 4;
#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(__STM32F1__) && !defined(TEENSYDUINO) #if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(ARDUINO_ARCH_STM32) && !defined(TEENSYDUINO)
DEBUG_PRINT(F("begin(sda, scl) -> "));DEBUG_PRINT(_sda);DEBUG_PRINT(F(" "));DEBUG_PRINTLN(_scl); DEBUG_PRINT(F("begin(sda, scl) -> "));DEBUG_PRINT(_sda);DEBUG_PRINT(F(" "));DEBUG_PRINTLN(_scl);
// _wire->begin(_sda, _scl); // _wire->begin(_sda, _scl);
#ifdef ARDUINO_ARCH_STM32
_wire->begin((uint32_t)_sda, (uint32_t)_scl);
#else
_wire->begin((int)_sda, (int)_scl); _wire->begin((int)_sda, (int)_scl);
#endif
#else #else
// Default pin for AVR some problem on software emulation // Default pin for AVR some problem on software emulation
// #define SCL_PIN _scl // #define SCL_PIN _scl

15
PCF8574.h
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@ -2,7 +2,7 @@
* PCF8574 GPIO Port Expand * PCF8574 GPIO Port Expand
* *
* AUTHOR: Renzo Mischianti * AUTHOR: Renzo Mischianti
* VERSION: 2.3.3 * VERSION: 2.3.4
* *
* https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/ * https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/
* *
@ -109,17 +109,18 @@ public:
PCF8574(uint8_t address); PCF8574(uint8_t address);
PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunction)() ); PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunction)() );
#if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(__STM32F1__) && !defined(TEENSYDUINO) #if !defined(__AVR) && !defined(ARDUINO_ARCH_SAMD) && !defined(ARDUINO_ARCH_STM32) && !defined(TEENSYDUINO)
PCF8574(uint8_t address, int sda, int scl); PCF8574(uint8_t address, int sda, int scl);
PCF8574(uint8_t address, int sda, int scl, uint8_t interruptPin, void (*interruptFunction)()); PCF8574(uint8_t address, int sda, int scl, uint8_t interruptPin, void (*interruptFunction)());
#endif #endif
#ifdef ESP32 #if defined(ESP32) || defined(ARDUINO_ARCH_SAMD)
///// changes for second i2c bus ///// changes for second i2c bus
PCF8574(TwoWire *pWire, uint8_t address); PCF8574(TwoWire *pWire, uint8_t address);
PCF8574(TwoWire *pWire, uint8_t address, int sda, int scl);
PCF8574(TwoWire *pWire, uint8_t address, uint8_t interruptPin, void (*interruptFunction)() ); PCF8574(TwoWire *pWire, uint8_t address, uint8_t interruptPin, void (*interruptFunction)() );
#endif
#if defined(ESP32)
PCF8574(TwoWire *pWire, uint8_t address, int sda, int scl);
PCF8574(TwoWire *pWire, uint8_t address, int sda, int scl, uint8_t interruptPin, void (*interruptFunction)()); PCF8574(TwoWire *pWire, uint8_t address, int sda, int scl, uint8_t interruptPin, void (*interruptFunction)());
#endif #endif
@ -201,7 +202,7 @@ private:
uint8_t _address; uint8_t _address;
#if !defined(DEFAULT_SDA) #if !defined(DEFAULT_SDA)
# if defined(__STM32F1__) # if defined(ARDUINO_ARCH_STM32)
# define DEFAULT_SDA PB7 # define DEFAULT_SDA PB7
# elif defined(ESP8266) # elif defined(ESP8266)
# define DEFAULT_SDA 4 # define DEFAULT_SDA 4
@ -212,7 +213,7 @@ private:
# endif # endif
#endif #endif
#if !defined(DEFAULT_SCL) #if !defined(DEFAULT_SCL)
# if defined(__STM32F1__) # if defined(ARDUINO_ARCH_STM32)
# define DEFAULT_SCL PB6 # define DEFAULT_SCL PB6
# elif defined(ESP8266) # elif defined(ESP8266)
# define DEFAULT_SCL 5 # define DEFAULT_SCL 5

2
PCF8574_library.h
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@ -2,7 +2,7 @@
* PCF8574 GPIO Port Expand * PCF8574 GPIO Port Expand
* *
* AUTHOR: Renzo Mischianti * AUTHOR: Renzo Mischianti
* VERSION: 2.3.3 * VERSION: 2.3.4
* *
* https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/ * https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/
* *

1
README.md
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@ -29,6 +29,7 @@ Tutorial:
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. 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.
## Changelog ## Changelog
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/).
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/). 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/).
28/07/2022: v2.3.2 Fix the SDA SCL type #58 and add basic support for SAMD device. 28/07/2022: v2.3.2 Fix the SDA SCL type #58 and add basic support for SAMD device.
26/04/2022: v2.3.1 Fix example for esp32 and double begin issue #56. 26/04/2022: v2.3.1 Fix example for esp32 and double begin issue #56.

4
library.json
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@ -1,8 +1,8 @@
{ {
"name": "PCF8574 library", "name": "PCF8574 library",
"version": "2.3.3", "version": "2.3.4",
"keywords": "digital, i2c, encoder, expander, pcf8574, pcf8574a, esp32, esp8266, stm32, SAMD, Arduino, wire", "keywords": "digital, i2c, encoder, expander, pcf8574, pcf8574a, esp32, esp8266, stm32, SAMD, Arduino, wire",
"description": "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.", "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.",
"homepage": "https://www.mischianti.org/category/my-libraries/pcf8574/", "homepage": "https://www.mischianti.org/category/my-libraries/pcf8574/",
"authors": "authors":
[ [

6
library.properties
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@ -1,9 +1,9 @@
name=PCF8574 library name=PCF8574 library
version=2.3.3 version=2.3.4
author=Renzo Mischianti <renzo.mischianti@gmail.com> author=Renzo Mischianti <renzo.mischianti@gmail.com>
maintainer=Renzo Mischianti <renzo.mischianti@gmail.com> maintainer=Renzo Mischianti <renzo.mischianti@gmail.com>
sentence=PCF8574, library for Arduino, ESP8266, smt32 and esp32 sentence=Most starred PCF8574 library for Arduino (standard and SAMD), ESP8266, smt32 and esp32
paragraph=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. paragraph=Most starred PCF8574 library. i2c digital expander for Arduino (standard and SAMD), esp32, SMT32 and ESP8266. Can read write digital values with only 2 wire. Very simple to use and encoder support.
category=Sensors category=Sensors
url=https://www.mischianti.org/category/my-libraries/pcf8574/ url=https://www.mischianti.org/category/my-libraries/pcf8574/
repository=https://github.com/xreef/PCF8574_library repository=https://github.com/xreef/PCF8574_library