I first tried a long if..else series to check if the last touch fit in the frame of any button, and write a boolean for that button. That didn't work despite serial prints indicating the x/y values were adjusted correctly, and serial prints indicating the comparisons were also correct... but in trying to find a solution, I discovered the Adafruit GFX library already has more elegant functions for drawing buttons and detecting presses within their frames. I haven't been able to find any documentation on these functions, just some examples, in particular the arduin-o-phone: https://learn.adafruit.com/arduin-o-pho ... one-sketch
Lacking another reference to the button function usage in the GFX library, I followed the arduin-o-phone example with few changes and rewrote my sketch to draw my 6 buttons. Except, when I try to compile I get "'b' was not declared in this scope", for each of my "if (b == 'num') {}" statements to execute my button functions, though clearly the arduin-o-phone uses these comparisons without issue... I thought b was defined by buttons. Defining it as any variety of terms in setup will prevent the compile error, but always results in no buttons being drawn on my TFT. Any ideas what I could be missing? I've been stumped for a while but I'd prefer to fix this using the GFX library functions, as it will be much easier to improve/modify this display in the future.
Sketch:
Code: Select all
#include "Adafruit_BusIO_Register.h"
#include "Adafruit_I2CDevice.h"
#include "Adafruit_I2CRegister.h"
#include "Adafruit_SPIDevice.h"
#include "Adafruit_INA260.h"
#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#include "Adafruit_FT6206.h"
#include "Wire.h"
#define Xcv 0//X-position of target voltage text
#define Ycv 0
#define Xcc 0// X-position of target current text
#define Ycc 24
#define BUTTON_X 0
#define BUTTON_Y 60
#define BUTTON_W 90
#define BUTTON_H 30
#define BUTTON_SPACEX 120
#define BUTTON_SPACEY 35
#define BUTTON_TXTSIZE 3
char buttonlabels[6][3] = {"V Up", "C Up", "V Down", "C Down", "Charge", "Stop"};
uint16_t buttoncolors[6] = {ILI9341_BLUE, ILI9341_BLUE, ILI9341_BLUE, ILI9341_BLUE, ILI9341_GREEN, ILI9341_RED};
Adafruit_GFX_Button buttons[6];
int x,y;
#define TFT_DC 9
#define TFT_CS 10
Adafruit_INA260 ina260 = Adafruit_INA260();
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
Adafruit_FT6206 ts = Adafruit_FT6206();
//If not using breakout, change TFT pins above as desired
// Display Start button, CV/CC values with buttons to increase/decrease setpoint, and INA260 current, voltage, power, CV/CC values.
// Wait until Start is pressed to run (sets ChargeState to 1, then;
int Charge; // 0 = off, 1 = CC, 2 = CV
float CV; // Max Charge voltage
float CC; // Max Charge current
float Vraw; //mV from
float V;
int INASamples = 128;
void DrawButt() {
for (uint8_t row = 0; row < 3; row++) {
for (uint8_t col = 0; col < 2; col++) {
buttons[col + row * 2].initButton(&tft, BUTTON_X + col * (BUTTON_W + BUTTON_SPACEX),
BUTTON_Y + row * (BUTTON_H + BUTTON_SPACEY),
BUTTON_W, BUTTON_H, ILI9341_WHITE, buttoncolors[col + row * 2], ILI9341_WHITE,
buttonlabels[col + row * 2], BUTTON_TXTSIZE);
buttons[col + row * 2].drawButton();
}
}
}
void CC_CV_Display() {
tft.setCursor(Xcv, Ycv);
tft.setTextSize(3); // 3*(5x8) = 15x24 per char
tft.setTextColor(ILI9341_WHITE);
tft.print("MaxV:");
tft.println(CV);
tft.setCursor(Xcc, Ycc);
tft.print("MaxA:");
tft.println(CC);
}
void ButtDetective() {
TS_Point p;
if (ts.touched() > 0) {
p = ts.getPoint();
} else {
p.x = p.y = p.z = -1;
}
if (p.z != -1) {
int y = 320 - p.y;
int x = 240 - p.x;
Serial.print("X");
Serial.print(x);
Serial.print("y");
Serial.println(y);
}
for (uint8_t b = 0; b < 6; b++) {
if (buttons[b].contains(x, y)) {
buttons[b].press(true);
Serial.println("Touch me harder daddy!");
} else {
buttons[b].press(false);
}
}
}
void ButtAction() {
if (b == 0) {
float CV = (CV + 0.10);
Serial.println("CV up!");
}
if (b == 1) {
float CC = (CC + 0.5);
Serial.println("CC up!");
}
if (b == 2) {
float CV = (CV - 0.10);
Serial.println("CV down!");
}
if (b == 3) {
float CC = (CC - 0.5);
Serial.println("CC down!");
}
if (b == 4) {
int Charge = 1;
Serial.println("Charging!");
}
if (b == 5) {
int Charge = 0;
Serial.println("Orisa online... HALT!");
}
}
void BeginCharge() {
// Code to close NPN to short HSP750-48 REMOTE ON/OFF pins and PV (program voltage) pins,
// and open NPN to open PC pin, close NPN to drive PC pin-- scale slowly up from 2V minimum until current >= CC setting
// When voltage > or ~= CV, set ChargeState = 2, enabling code to close NPN to short meanwell PC pin, open NPN for PV pin short and open NPN to drive PV with values from some kind of lookup array. I think "char PVlookup[x] = [y]" up with defines?
// When current <50mA, return ChargeState to 0 (disconnecting Meanwell REMOTE) and trigger buzzer for 1 sec. Add code to loop to check INA260 power periodically, at end of charge display total energy added in charge cycle above SV/SC, below buttons.
}
void setup() {
Serial.begin(115200);
Serial.println("Mmm, my input is so turned on right now!");
tft.begin();
ts.begin(); // Start touchscreen
tft.fillScreen(ILI9341_BLACK);
Wire.begin();
pinMode(A0, OUTPUT);
pinMode(A1, OUTPUT);
digitalWrite (A0, HIGH); // Close NPN for to set HSP-750-48's REMOTE ON/OFF to OFF
}
void loop() {
CC_CV_Display();
ButtDetective();
ButtAction();
delay(50);
}