Adafruit-MCP23017-Arduino-Library
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adafruit
Arduino Library for Adafruit MCP23017
Not working using new Arduino Nano ESP32 development board (Arduino IDE). Arduino Nano ESP32 development board is using ESP32-S3 MCU. When compiling using ESP32-S3 board, there was no error but...
This allows to configure the used SPI clock frequency for the SPI variants, instead of using the hard coded 1 Mhz. It should not break anything or change the behavior...
- Arduino board: Arduino Leonardo - Arduino IDE version 1.8.9 I built a custom board with two MCP23S17. They are on the same Chip Select, with different addresses (000 and...
This is specific to the mcp23017 chip ``` #include Adafruit_MCP23X17 mcp1; //declaration for chip 1 Adafruit_MCP23X17 mcp2; //declaration for chip 2 /* use the following table to configure A0-2 on...
Adafruit_MCP23XXX::digitalWrite should read/modify/write the output register, not the input register
MCP23XXX_GPIO should be MCP23XXX_OLAT This bug got us when using this library. The read/modify/write should be performing this operation on the output latch register, not the raw input register. This...
Concerning this warning Some people have reported an undocumented bug that can potentially corrupt the I2C bus. It occurs if an MCP230XX input pin state changes during I2C readout. This...
Hello would it be possible to add a function for bulk setting of INPUT/OUTPUT of the GPIO? im currently using 5 of these and 80 lines of code is used...
This library currently requires **both** `SPI` and `Wire` to be present for *any* target board. This can cause build failures for targets that only have one or the other. Ex:...
Hi, good job on the rewrite, looks very good. Is there any plans on supporting the MCP23018 variant? It's pretty much the same as the MCP23017, with minor differences. I...
