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0.1.8 MCP_ADC

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rob tillaart 2021-12-21 15:31:31 +01:00
parent 14b6317b3e
commit 8bb9dc6954
16 changed files with 88 additions and 42 deletions
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2
libraries/MCP_ADC/LICENSE
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@ -1,6 +1,6 @@
MIT License
Copyright (c) 2019-2021 Rob Tillaart
Copyright (c) 2019-2022 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

4
libraries/MCP_ADC/MCP_ADC.cpp
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@ -1,11 +1,10 @@
//
// FILE: MCP_ADC.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.1.7
// VERSION: 0.1.8
// DATE: 2019-10-24
// PURPOSE: Arduino library for MCP3002, MCP3004, MCP3008, MCP3202, MCP3204, MCP3208
// URL: https://github.com/RobTillaart/MCP_ADC
//
#include "MCP_ADC.h"
@ -304,3 +303,4 @@ uint8_t MCP3208::buildRequest(uint8_t channel, bool single, uint8_t * data)
// -- END OF FILE --

4
libraries/MCP_ADC/MCP_ADC.h
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@ -2,7 +2,7 @@
//
// FILE: MCP_ADC.h
// AUTHOR: Rob Tillaart
// VERSION: 0.1.7
// VERSION: 0.1.8
// DATE: 2019-10-24
// PURPOSE: Arduino library for MCP_ADC
// URL: https://github.com/RobTillaart/MCP_ADC
@ -13,7 +13,7 @@
#include "SPI.h"
#define MCP_ADC_LIB_VERSION (F("0.1.7"))
#define MCP_ADC_LIB_VERSION (F("0.1.8"))
class MCP_ADC

19
libraries/MCP_ADC/README.md
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@ -120,30 +120,35 @@ The default SPI speed is reduced to 1 MHz.
This is the value recommended in the datasheet for 2.7V.
In a test with an ESP32 (3.3V) the library showed stable results
at 4 Mhz and at 6 Mhz it was almost good.
at 4 MHz and at 6 MHz it was almost good.
The max value read at 6 MHz was 1020 instead of 1023 (MCP3008)
which indicates that the last 2 bits got lost due to signal deformation.
| Board | Voltage | safe | max |
|:-----:|:-------:|:------:|:-----:|
| ESP32 | 2.7V | 1 MHz | 4 Mhz |
| UNO | 5.0V | 2 MHz | 4 Mhz |
| ESP32 | 2.7V | 1 MHz | 4 MHz |
| UNO | 5.0V | 2 MHz | 4 MHz |
For hardware SPI the ESP32 uses the VSPI pins. (see ESP examples).
## Future / ideas / improvements
## Future
- documentation
- testing, a lot ...
- get / setF(float A, float B) => float readF(channel) output = A\*value + B;
it actually does float mapping. As it implies the same mapping for all it might
not be that useful
- analogRead (mask, int array\[8\] ) read ports (set in mask) in an array in one call.
would this save time?
#### wont
- get / setF(float A, float B) => float readF(channel) output = A\*value + B;
it actually does float mapping. As it implies the same mapping for all it might
not be that useful => multmap
## Operations
See examples.

6
libraries/MCP_ADC/examples/MCP3002_analogRead/MCP3002_analogRead.ino
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@ -1,15 +1,16 @@
//
// FILE: MCP3002_analogRead.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// PURPOSE: demo
// DATE: 2020-08-13
#include "MCP_ADC.h"
MCP3002 mcp1; // use HWSPI
MCP3002 mcp2(6, 7); // use SWSPI
void setup()
{
Serial.begin(115200);
@ -30,6 +31,7 @@ void setup()
Serial.println(mcp2.maxValue());
}
void loop()
{
Serial.print("mcp1:\t");
@ -52,4 +54,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

6
libraries/MCP_ADC/examples/MCP3002_deltaRead/MCP3002_deltaRead.ino
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@ -1,15 +1,16 @@
//
// FILE: MCP3002_deltaRead.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// PURPOSE: demo
// DATE: 2020-08-13
#include "MCP_ADC.h"
MCP3002 mcp1; // use HWSPI
MCP3002 mcp2(6, 7); // use SWSPI
void setup()
{
Serial.begin(115200);
@ -30,6 +31,7 @@ void setup()
Serial.println(mcp2.maxValue());
}
void loop()
{
Serial.print("mcp1:\t");
@ -52,4 +54,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

6
libraries/MCP_ADC/examples/MCP3002_differentialRead/MCP3002_differentialRead.ino
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@ -1,15 +1,16 @@
//
// FILE: MCP3002_differentialRead.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// PURPOSE: demo
// DATE: 2020-08-13
#include "MCP_ADC.h"
MCP3002 mcp1; // use HWSPI
MCP3002 mcp2(6, 7); // use SWSPI
void setup()
{
Serial.begin(115200);
@ -30,6 +31,7 @@ void setup()
Serial.println(mcp2.maxValue());
}
void loop()
{
Serial.print("mcp1:\t");
@ -52,4 +54,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

6
libraries/MCP_ADC/examples/MCP3008_analogRead/MCP3008_analogRead.ino
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@ -1,15 +1,16 @@
//
// FILE: MCP3008_analogRead.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// PURPOSE: demo
// DATE: 2020-08-13
#include "MCP_ADC.h"
MCP3008 mcp1; // use HWSPI
MCP3004 mcp2(6, 7); // use SWSPI
void setup()
{
Serial.begin(115200);
@ -30,6 +31,7 @@ void setup()
Serial.println(mcp2.maxValue());
}
void loop()
{
Serial.print("mcp1:\t");
@ -52,4 +54,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

17
libraries/MCP_ADC/examples/MCP3008_analogRead_ESP32_HWSPI/MCP3008_analogRead_ESP32_HWSPI.ino
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@ -1,23 +1,23 @@
//
// FILE: MCP3008_analogRead_ESP32_HWSPI.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.0
// PURPOSE: demo
// DATE: 2021-03-12
#include "MCP_ADC.h"
// ESP32 PINS
// For HSPI
// CLK: 14
// MOSI: 13
// MISO: 12
// CLK: 14
// MOSI: 13
// MISO: 12
//
// For VSPI (id = 2):
// CLK: 18,
// MOSI: 23,
// MISO: 19,
// CLK: 18,
// MOSI: 23,
// MISO: 19,
MCP3008 mcp1; // use HWSPI on ESP32 (apparently VSPI)
@ -42,6 +42,7 @@ void setup()
mcp1.setSPIspeed(4000000); // seems to be the max speed. use 1MHz (default) to be safe
}
void loop()
{
Serial.print(millis());
@ -58,4 +59,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

17
libraries/MCP_ADC/examples/MCP3008_analogRead_ESP32_SWSPI/MCP3008_analogRead_ESP32_SWSPI.ino
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@ -1,23 +1,23 @@
//
// FILE: MCP3008_analogRead_ESP32_SWSPI.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.0
// PURPOSE: demo
// DATE: 2021-03-12
#include "MCP_ADC.h"
// ESP32 PINS
// For HSPI
// CLK: 14
// MOSI: 13
// MISO: 12
// CLK: 14
// MOSI: 13
// MISO: 12
//
// For VSPI (id = 2):
// CLK: 18,
// MOSI: 23,
// MISO: 19,
// CLK: 18,
// MOSI: 23,
// MISO: 19,
MCP3008 mcp1(23, 19, 21); // ESP32 use SWSPI dataIn, dataOut, Clock
@ -40,6 +40,7 @@ void setup()
Serial.println(mcp1.maxValue());
}
void loop()
{
Serial.print(millis());
@ -56,4 +57,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

6
libraries/MCP_ADC/examples/MCP3008_deltaRead/MCP3008_deltaRead.ino
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@ -1,15 +1,16 @@
//
// FILE: MCP3008_deltaRead.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// PURPOSE: demo
// DATE: 2020-08-13
#include "MCP_ADC.h"
MCP3008 mcp1; // use HWSPI
MCP3004 mcp2(6, 7); // use SWSPI
void setup()
{
Serial.begin(115200);
@ -30,6 +31,7 @@ void setup()
Serial.println(mcp2.maxValue());
}
void loop()
{
Serial.print("mcp1:\t");
@ -52,4 +54,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

6
libraries/MCP_ADC/examples/MCP3008_differentialRead/MCP3008_differentialRead.ino
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@ -1,15 +1,16 @@
//
// FILE: MCP3008_differentialRead.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// PURPOSE: demo
// DATE: 2020-08-13
#include "MCP_ADC.h"
MCP3008 mcp1; // use HWSPI
MCP3004 mcp2(6, 7); // use SWSPI
void setup()
{
Serial.begin(115200);
@ -30,6 +31,7 @@ void setup()
Serial.println(mcp2.maxValue());
}
void loop()
{
Serial.print("mcp1:\t");
@ -52,4 +54,6 @@ void loop()
delay(1000);
}
// -- END OF FILE --

16
libraries/MCP_ADC/examples/MCP_ADC_performance/MCP_ADC_performance.ino
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@ -1,13 +1,12 @@
//
// FILE: MCP_ADC_performance.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// PURPOSE: simple performance measurement.
// DATE: 2020-08-14
// Note the deltaRead() does 1 or 2 differential reads depending
// on positive of negative delta between 2 pins.
// Therefor timing might differ substantially.
//
// Note the deltaRead() does 1 or 2 differential reads depending
// on positive of negative delta between 2 pins.
// Therefore timing might differ substantially.
#include "MCP_ADC.h"
@ -22,6 +21,7 @@ MCP3208 mcp28;
uint32_t start, stop;
void setup()
{
Serial.begin(115200);
@ -93,10 +93,12 @@ void setup()
Serial.println("done...");
}
void loop()
{
}
void test_1()
{
uint32_t val = 0;
@ -133,6 +135,7 @@ void test_1()
delay(10);
}
void test_2()
{
uint32_t val = 0;
@ -169,6 +172,7 @@ void test_2()
delay(10);
}
void test_3()
{
uint32_t val = 0;
@ -205,6 +209,7 @@ void test_3()
delay(10);
}
void test_6()
{
uint32_t val = 0;
@ -243,3 +248,4 @@ void test_6()
// -- END OF FILE --

5
libraries/MCP_ADC/library.json
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@ -15,8 +15,9 @@
"type": "git",
"url": "https://github.com/RobTillaart/MCP_ADC.git"
},
"version": "0.1.7",
"version": "0.1.8",
"license": "MIT",
"frameworks": "*",
"platforms": "*"
"platforms": "*",
"headers": "MCP_ADC.h"
}

2
libraries/MCP_ADC/library.properties
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@ -1,5 +1,5 @@
name=MCP_ADC
version=0.1.7
version=0.1.8
author=Rob Tillaart <rob.tillaart@gmail.com>
maintainer=Rob Tillaart <rob.tillaart@gmail.com>
sentence=Arduino library for MCP3002, MCP3004, MCP3008, MCP3202, MCP3204, MCP3208

8
libraries/MCP_ADC/test/unit_test_001.cpp
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@ -38,12 +38,15 @@
unittest_setup()
{
fprintf(stderr, "MCP_ADC_LIB_VERSION: %s\n", (char *) MCP_ADC_LIB_VERSION);
}
unittest_teardown()
{
}
/*
unittest(test_new_operator)
{
@ -59,8 +62,6 @@ unittest(test_new_operator)
unittest(test_constructor)
{
fprintf(stderr, "VERSION: %s\n", "-");
MCP3002 ADC2;
MCP3004 ADC4;
MCP3008 ADC8;
@ -90,6 +91,7 @@ unittest(test_constructor)
assertEqual(4095, ADC28.maxValue());
}
unittest(test_MCP3002)
{
MCP3002 mcp_adc;
@ -113,6 +115,8 @@ unittest(test_MCP3002)
}
unittest_main()
// --------