43 lines
2.4 KiB
C++
43 lines
2.4 KiB
C++
/*
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8_Inkplate_MCP23017 example for e-radionica.com Inkplate 6
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For this example you will need only a micro USB cable, Inkplate6, 330 Ohm resistor and LED diode.
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Select "Inkplate 6(ESP32)" from Tools -> Board menu.
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Don't have "Inkplate 6(ESP32)" option? Follow our tutorial and add it:
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https://e-radionica.com/en/blog/add-inkplate-6-to-arduino-ide/
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Connect resistor to GPB7 pin on MCP23017 header at bottom right corner on the backside (component side) of Inkplate.
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You will have to connect one side of 330 Ohm resistor to GPB7, than other side to anode of LED and finally, cathode pin of LED to GND.
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This example will show you how you can manipulate with I/Os of MCP23017 Expander.
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You can only manipulate with Port B of MCP23017 (GPB1-GPB7). Port A is used for epaper panel and TPS65186 PMIC.
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GPB0 is used for ESP32 GPIO0 so you can't use it either.
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GPB1 is used for enabling battery reading (if Batt solder bridge is bridged between second and third pad)
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GPB2, GPB3 and GPB4 are used for reading touchpad (if Touchpad solder bridges are bridged between second pad and third pad).
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If every thing is connected ok, after you upload code, LED should blink.
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DANGER: DO NOT USE GPA0-GPA7 and GPB0. In code those are pins from 0-8!!! Using those, you might permanently damage the screen.
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You should only use pins from 9-15.
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Want to learn more about Inkplate? Visit www.inkplate.io
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Looking to get support? Write on our forums: http://forum.e-radionica.com/en/
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15 July 2020 by e-radionica.com
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*/
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#include "Inkplate.h" //Include Inkplate library to the sketch
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#define LED_PIN 15 //We are going to use pin GPB7 (remember! GPA0 = 0, GPA1 = 1, ..., GPA7 = 7, GPB0 = 8, GBP1 = 9, ..., GPB7 = 15)
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Inkplate display(INKPLATE_1BIT); //Create an object on Inkplate library and also set library into 1-bit mode (Monochrome)
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void setup() {
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display.begin(); //Init Inkplate library (you should call this function ONLY ONCE)
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pinModeMCP(LED_PIN, OUTPUT); //Set pin 15 (or GPB7) to output. On that pin, we sholud connect LED with current limiting resistor
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}
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void loop() {
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digitalWriteMCP(LED_PIN, LOW); //Set output to low (LED does not light up)
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delay(1000); //Wait for one second
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digitalWriteMCP(LED_PIN, HIGH); //Set output to high (LED lights up)
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delay(1000); //Wait for one second
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}
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