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UIMicro / Arduino_TPL0501

A simple Arduino TPL0501 Library
GNU General Public License v3.0
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Problem in example file in Arduino UNO R3 #1

Open pauloboniatti opened 5 months ago

pauloboniatti commented 5 months ago

HI. Thank's for your job. This was the only library I found for TPL0501. I'm sorry but I'm a beginner in Arduino (UNO R3). I installed your library and just opened the example file, but I'm getting all these errors. What did I do wrong? Thank you.

D:\TPL0501_TEST.ino:3:15: error: conversion from 'std::nullptr_t' to non-scalar type 'TPL0501' requested TPL0501 tpl = nullptr; ^~~~~~~ D:\TPL0501_TEST.ino: In function 'void setup()': D:\TPL0501_TEST.ino:7:33: error: no match for 'operator=' (operand types are 'TPL0501' and 'TPL0501*') tpl = new TPL0501(A5, A1, A0); ^ In file included from D:\TPL0501_TEST.ino:1:0: d:\Arduino\libraries\TPL0501/TPL0501.h:6:7: note: candidate: TPL0501& TPL0501::operator=(const TPL0501&) class TPL0501 { ^~~~~~~ d:\Arduino\libraries\TPL0501/TPL0501.h:6:7: note: no known conversion for argument 1 from 'TPL0501*' to 'const TPL0501&' d:\Arduino\libraries\TPL0501/TPL0501.h:6:7: note: candidate: TPL0501& TPL0501::operator=(TPL0501&&) d:\Arduino\libraries\TPL0501/TPL0501.h:6:7: note: no known conversion for argument 1 from 'TPL0501*' to 'TPL0501&&' D:\TPL0501_TEST.ino: In function 'void loop()': D:\TPL0501_TEST.ino:18:29: error: no matching function for call to 'TPL0501::setResistor(TPL0501&, uint8_t&)' tpl.setResistor(tpl, cnt); ^ In file included from D:\TPL0501_TEST.ino:1:0: d:\Arduino\libraries\TPL0501/TPL0501.h:12:10: note: candidate: void TPL0501::setResistor(uint8_t) void setResistor(uint8_t value); ^~~~~~~~~~~ d:\Arduino\libraries\TPL0501/TPL0501.h:12:10: note: candidate expects 1 argument, 2 provided exit status 1 Compilation error: conversion from 'std::nullptr_t' to non-scalar type 'TPL0501' requested

UIMicro commented 5 months ago

Sorry for the inconvenience. This error originates from a mistake in declaring the variable. In 'TPL.ino', the declaration "TPL0501 tpl = nullptr;" should be "TPL0501* tpl = nullptr;". Thanks for your interest. I've updated the source code and you may try it again.

UIMicro commented 5 months ago

Please check whether the error still exists. Your comment matters.

pauloboniatti commented 5 months ago

Thanks, but still report this error:

D:\X9C10X_test.ino: In function 'void loop()': D:\potenziometro_SPI_provare.ino:18:9: error: request for member 'setResistor' in 'tpl', which is of pointer type 'TPL0501*' (maybe you meant to use '->' ?) tpl.setResistor(tpl, cnt); ^~~~~~~~~~~ exit status 1 Compilation error: request for member 'setResistor' in 'tpl', which is of pointer type 'TPL0501*' (maybe you meant to use '->' ?)

UIMicro commented 5 months ago

To access members of a pointer, we should use '->' instead of '.'. I've updated the code and you may try it again.

UIMicro commented 5 months ago

Besides, this code is tested on Arduino Nano ESP32, whose SPI framework may be a little different from those based on AVR chips. Since I do not have the hardward by my hand, you may modify the SPI part with reference to examples on the internet (e.g. https://www.circuitbasics.com/how-to-set-up-spi-communication-for-arduino/).

pauloboniatti commented 5 months ago

I'll try it later. Thank you very much!