kyle/ulisp
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

directory move

Browse Source
This commit is contained in:
Kyle Isom
2025-04-10 23:12:01 -07:00
parent 25199750cf
commit 8ecbfeab1e
604 changed files with 0 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
picocalc/libraries/TFT_eSPI/examples/480 x 320/TFT_ring_meter/Alert.h Normal file
View File

@@ -0,0 +1,41 @@
// We need this header file to use FLASH as storage with PROGMEM directive:
// Icon width and height
const uint16_t alertWidth = 32;
const uint16_t alertHeight = 32;
// The icon file can be created with the "UTFT ImageConverter 565" bitmap to .c file creation utility, more can be pasted in here
const unsigned short alert[1024] PROGMEM={
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0840,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 0, 32 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x1080,0xAC66,0xEDE8,0xFE69,0xC4C6,0x2901,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 1, 64 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0xBCC6,0xFE68,0xFE68,0xFE6A,0xFE68,0xEDE8,0x18A1,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 2, 96 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x8344,0xFE48,0xFE8C,0xFFDD,0xFFFF,0xFEF0,0xFE48,0xB466,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 3, 128 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x1880,0xEDC7,0xFE48,0xFF99,0xFFBC,0xFF9B,0xFFBD,0xFE6A,0xFE48,0x5A23,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 4, 160 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x9BE5,0xFE28,0xFED0,0xFFBC,0xFF7A,0xFF9A,0xFF9B,0xFF35,0xFE28,0xBCA6,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 5, 192 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x3962,0xFE28,0xFE28,0xFF9A,0xFF79,0xFF9A,0xFF9B,0xFF9A,0xFFBD,0xFE6B,0xFE28,0x72E3,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 6, 224 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0xB465,0xFE28,0xFEF2,0xFF7A,0xFF79,0xFF7A,0xFF9A,0xFF7A,0xFF7A,0xFF78,0xFE28,0xDD67,0x0860,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 7, 256 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x5A22,0xFE07,0xFE29,0xFF9B,0xFF37,0xFF58,0xFF79,0xFF79,0xFF79,0xFF58,0xFF9B,0xFEAE,0xFE07,0x93A4,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 8, 288 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0xC4A5,0xFE07,0xFF15,0xFF37,0xFF36,0xAD11,0x2965,0x2965,0xCDF4,0xFF37,0xFF37,0xFF79,0xFE07,0xFE07,0x2901,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 9, 320 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x7B03,0xFDE7,0xFE4B,0xFF79,0xFEF4,0xFF15,0xB552,0x2945,0x2945,0xDE55,0xFF16,0xFF15,0xFF58,0xFED1,0xFDE7,0xAC25,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 10, 352 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0840,0xDD26,0xFDE7,0xFF57,0xFED3,0xFED2,0xFEF4,0xBD93,0x2124,0x2124,0xDE75,0xFF14,0xFED3,0xFED3,0xFF7A,0xFE08,0xFDE7,0x49A2,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 11, 384 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x9BA4,0xFDC6,0xFE6E,0xFF36,0xFE90,0xFEB1,0xFED3,0xC592,0x2124,0x2124,0xE675,0xFED3,0xFEB2,0xFEB1,0xFEF3,0xFEF3,0xFDC6,0xBC45,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 12, 416 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x3141,0xF5C6,0xF5C7,0xFF58,0xFE90,0xFE6F,0xFE8F,0xFEB1,0xCDB2,0x2104,0x2104,0xF6B4,0xFEB1,0xFE90,0xFE8F,0xFE90,0xFF58,0xFE0A,0xF5C6,0x72A3,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 13, 448 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0xABE4,0xF5A6,0xFEB1,0xFED3,0xFE4E,0xFE6E,0xFE6F,0xFE90,0xD5F2,0x18E3,0x18E3,0xFED4,0xFE90,0xFE6F,0xFE6F,0xFE6E,0xFE91,0xFF36,0xF5A6,0xCCA5,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, // row 14, 480 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0x5202,0xF5A6,0xF5C7,0xFF58,0xFE4D,0xFE4D,0xFE4D,0xFE4E,0xFE6F,0xDE11,0x18C3,0x18C3,0xFED3,0xFE6F,0xFE6E,0xFE4E,0xFE4D,0xFE4D,0xFF16,0xFE2C,0xF5A6,0x9363,0x0000,0x0000,0x0000,0x0000,0x0000, // row 15, 512 pixels
0x0000,0x0000,0x0000,0x0000,0x0000,0xBC44,0xF585,0xFED3,0xFE6F,0xFE2C,0xFE2C,0xFE2D,0xFE4D,0xFE4E,0xE630,0x10A2,0x2104,0xFED1,0xFE4E,0xFE4D,0xFE4D,0xFE2D,0xFE2C,0xFE4D,0xFF37,0xF586,0xF585,0x28E1,0x0000,0x0000,0x0000,0x0000, // row 16, 544 pixels
0x0000,0x0000,0x0000,0x0000,0x7282,0xF565,0xF5EA,0xFF16,0xFE0B,0xFE0B,0xFE0B,0xFE2C,0xFE2C,0xFE4D,0xF670,0x1082,0x2924,0xFEB0,0xFE2D,0xFE2C,0xFE2C,0xFE2C,0xFE0B,0xFE0B,0xFEB2,0xFE6F,0xF565,0xA383,0x0000,0x0000,0x0000,0x0000, // row 17, 576 pixels
0x0000,0x0000,0x0000,0x0840,0xD4C4,0xF565,0xFEF5,0xFE0C,0xFDE9,0xFDEA,0xFE0A,0xFE0B,0xFE0B,0xFE2C,0xFE8F,0x0861,0x2964,0xFE8F,0xFE2C,0xFE0B,0xFE0B,0xFE0B,0xFE0A,0xFDEA,0xFE0B,0xFF37,0xF586,0xF565,0x4181,0x0000,0x0000,0x0000, // row 18, 608 pixels
0x0000,0x0000,0x0000,0x9343,0xF545,0xF60C,0xFED3,0xFDC8,0xFDC8,0xFDC9,0xFDE9,0xFDEA,0xFDEA,0xFE0B,0xFE8E,0x0861,0x3184,0xFE6D,0xFE0B,0xFE0A,0xFDEA,0xFDEA,0xFDE9,0xFDC9,0xFDC9,0xFE4E,0xFEB2,0xF545,0xB3E3,0x0000,0x0000,0x0000, // row 19, 640 pixels
0x0000,0x0000,0x28E0,0xF544,0xF545,0xFF17,0xFDC8,0xFDA7,0xFDA7,0xFDC8,0xFDC8,0xFDC9,0xFDC9,0xFDE9,0xFE6C,0x10A2,0x39C4,0xFE4C,0xFDEA,0xFDE9,0xFDC9,0xFDC9,0xFDC8,0xFDC8,0xFDA7,0xFDA8,0xFF16,0xF588,0xF544,0x6222,0x0000,0x0000, // row 20, 672 pixels
0x0000,0x0000,0xA383,0xF524,0xF64E,0xFE4E,0xFD86,0xFD86,0xFD87,0xFDA7,0xFDA7,0xFDA8,0xFDC8,0xFDC8,0xFE2A,0xA469,0xB4EA,0xFE2A,0xFDC9,0xFDC8,0xFDC8,0xFDA8,0xFDA7,0xFDA7,0xFD87,0xFD86,0xFDEA,0xFED3,0xF524,0xC443,0x0000,0x0000, // row 21, 704 pixels
0x0000,0x51C1,0xF504,0xF546,0xFF16,0xF565,0xFD65,0xFD65,0xFD86,0xFD86,0xFD86,0xFDA7,0xFDA7,0xFDA7,0xFDE8,0xFE6A,0xFE4A,0xFDE8,0xFDA7,0xFDA7,0xFDA7,0xFDA7,0xFD86,0xFD86,0xFD86,0xFD65,0xFD65,0xFEB2,0xF5CA,0xF504,0x8AE2,0x0000, // row 22, 736 pixels
0x0000,0xB3A2,0xED03,0xFE92,0xFDC9,0xF543,0xF544,0xFD44,0xFD65,0xFD65,0xFD65,0xFD86,0xFD86,0xFD86,0xFDA7,0xFDC7,0xFDC7,0xFDA7,0xFD86,0xFD86,0xFD86,0xFD86,0xFD65,0xFD65,0xFD65,0xFD44,0xF544,0xFD86,0xFEF5,0xED03,0xE4C3,0x1880, // row 23, 768 pixels
0x7241,0xECE3,0xF567,0xFED3,0xF523,0xF523,0xF523,0xF543,0xF544,0xF544,0xFD65,0xFD65,0xFD65,0xFD65,0xD4E6,0x39C5,0x39A5,0xD4E6,0xFD86,0xFD65,0xFD65,0xFD65,0xFD65,0xF544,0xF544,0xF543,0xF523,0xF523,0xFE2E,0xF5EC,0xECE3,0x9B42, // row 24, 800 pixels
0xD443,0xECE3,0xFED4,0xF565,0xF502,0xF502,0xF522,0xF523,0xF523,0xF543,0xF544,0xF544,0xF544,0xFD65,0x8B64,0x18C3,0x18C3,0x8344,0xFD85,0xFD44,0xF544,0xF544,0xF544,0xF543,0xF523,0xF523,0xF522,0xF502,0xF523,0xFEF5,0xED04,0xECE3, // row 25, 832 pixels
0xECC3,0xF5AB,0xFE6F,0xF501,0xF4E1,0xF501,0xF502,0xF502,0xF522,0xF522,0xF523,0xF523,0xF523,0xFD84,0xC504,0x20E1,0x18E1,0xC4E4,0xFD84,0xF543,0xF523,0xF523,0xF523,0xF522,0xF522,0xF502,0xF502,0xF501,0xF501,0xFDC9,0xF62F,0xECC3, // row 26, 864 pixels
0xECC2,0xFE92,0xF523,0xF4E0,0xF4E0,0xF4E1,0xF4E1,0xF501,0xF501,0xF502,0xF502,0xF522,0xF522,0xF543,0xFDE3,0xFEA5,0xF6A4,0xFE04,0xF543,0xF522,0xF522,0xF522,0xF502,0xF502,0xF501,0xF501,0xF4E1,0xF4E1,0xF4E0,0xF4E1,0xFED4,0xECC2, // row 27, 896 pixels
0xECA2,0xF5EC,0xF4E0,0xF4C0,0xF4E0,0xF4E0,0xF4E0,0xF4E1,0xF4E1,0xF501,0xF501,0xF501,0xF502,0xF502,0xF542,0xFDA2,0xFDA2,0xF542,0xF502,0xF502,0xF502,0xF501,0xF501,0xF501,0xF4E1,0xF4E1,0xF4E0,0xF4E0,0xF4E0,0xF4C0,0xF5A9,0xECA2, // row 28, 928 pixels
0xECA2,0xECA2,0xECC2,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4E1,0xF4E2,0xF4E2,0xF4E2,0xF4E2,0xF4E2,0xF4E2,0xF4E2,0xF4E2,0xF4E2,0xF4E1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xF4C1,0xECC2,0xECC3,0xECA2, // row 29, 960 pixels
0x8AC1,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0xEC82,0x9B01, // row 30, 992 pixels
0x0000,0x1880,0x51A0,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x8AA1,0x61E0,0x28E0,0x0000}; // row 31, 1024 pixels

281
picocalc/libraries/TFT_eSPI/examples/480 x 320/TFT_ring_meter/TFT_ring_meter.ino Normal file
View File

@@ -0,0 +1,281 @@
/*
An example showing 'ring' analogue meter on a TFT
colour screen
Needs Fonts 2, 4 and 7 (also Font 6 if using a large size meter)
*/
// Meter colour schemes
#define RED2RED 0
#define GREEN2GREEN 1
#define BLUE2BLUE 2
#define BLUE2RED 3
#define GREEN2RED 4
#define RED2GREEN 5
#define TFT_GREY 0x2104 // Dark grey 16 bit colour
#include "Alert.h" // Out of range alert icon
#include <TFT_eSPI.h> // Hardware-specific library
#include <SPI.h>
TFT_eSPI tft = TFT_eSPI(); // Invoke custom library with default width and height
uint32_t runTime = -99999; // time for next update
int reading = 0; // Value to be displayed
int d = 0; // Variable used for the sinewave test waveform
bool range_error = 0;
int8_t ramp = 1;
void setup(void) {
tft.begin();
//Serial.begin(9600);
tft.setRotation(1);
tft.fillScreen(TFT_BLACK);
}
void loop() {
if (millis() - runTime >= 0L) { // Execute every TBD ms
runTime = millis();
// Test with a slowly changing value from a Sine function
//d += 4; if (d >= 360) d = 0;
// Set the the position, gap between meters, and inner radius of the meters
int xpos = 0, ypos = 5, gap = 4, radius = 52;
// Draw meter and get back x position of next meter
// Test with Sine wave function, normally reading will be from a sensor
//reading = 250 + 250 * sineWave(d+0);
//xpos = gap + ringMeter(reading, 0, 500, xpos, ypos, radius, "mA", GREEN2RED); // Draw analogue meter
//reading = 20 + 30 * sineWave(d+60);
//xpos = gap + ringMeter(reading, -10, 50, xpos, ypos, radius, "degC", BLUE2RED); // Draw analogue meter
//reading = 50 + 50 * sineWave(d + 120);
//ringMeter(reading, 0, 100, xpos, ypos, radius, "%RH", BLUE2BLUE); // Draw analogue meter
// Draw two more larger meters
//xpos = 20, ypos = 115, gap = 24, radius = 64;
//reading = 1000 + 150 * sineWave(d + 90);
//xpos = gap + ringMeter(reading, 850, 1150, xpos, ypos, radius, "mb", BLUE2RED); // Draw analogue meter
//reading = 15 + 15 * sineWave(d + 150);
//xpos = gap + ringMeter(reading, 0, 30, xpos, ypos, radius, "Volts", GREEN2GREEN); // Draw analogue meter
// Draw a large meter
xpos = 480/2 - 160, ypos = 0, gap = 15, radius = 170;
reading +=(ramp);
if (reading>98) ramp = -1;
if (reading<0) ramp = 1;
// Comment out above meters, then uncomment the next line to show large meter
ringMeter(reading,0,100, xpos,ypos,radius," Watts",GREEN2RED); // Draw analogue meter
if (reading<0) delay(1000);
}
}
// #########################################################################
// Draw the meter on the screen, returns x coord of righthand side
// #########################################################################
int ringMeter(int value, int vmin, int vmax, int x, int y, int r, const char *units, byte scheme)
{
// Minimum value of r is about 52 before value text intrudes on ring
// drawing the text first is an option
x += r; y += r; // Calculate coords of centre of ring
int w = r / 3; // Width of outer ring is 1/4 of radius
int angle = 150; // Half the sweep angle of meter (300 degrees)
int v = map(value, vmin, vmax, -angle, angle); // Map the value to an angle v
byte seg = 3; // Segments are 3 degrees wide = 100 segments for 300 degrees
byte inc = 6; // Draw segments every 3 degrees, increase to 6 for segmented ring
// Variable to save "value" text colour from scheme and set default
int colour = TFT_BLUE;
// Draw colour blocks every inc degrees
for (int i = -angle+inc/2; i < angle-inc/2; i += inc) {
// Calculate pair of coordinates for segment start
float sx = cos((i - 90) * 0.0174532925);
float sy = sin((i - 90) * 0.0174532925);
uint16_t x0 = sx * (r - w) + x;
uint16_t y0 = sy * (r - w) + y;
uint16_t x1 = sx * r + x;
uint16_t y1 = sy * r + y;
// Calculate pair of coordinates for segment end
float sx2 = cos((i + seg - 90) * 0.0174532925);
float sy2 = sin((i + seg - 90) * 0.0174532925);
int x2 = sx2 * (r - w) + x;
int y2 = sy2 * (r - w) + y;
int x3 = sx2 * r + x;
int y3 = sy2 * r + y;
if (i < v) { // Fill in coloured segments with 2 triangles
switch (scheme) {
case 0: colour = TFT_RED; break; // Fixed colour
case 1: colour = TFT_GREEN; break; // Fixed colour
case 2: colour = TFT_BLUE; break; // Fixed colour
case 3: colour = rainbow(map(i, -angle, angle, 0, 127)); break; // Full spectrum blue to red
case 4: colour = rainbow(map(i, -angle, angle, 70, 127)); break; // Green to red (high temperature etc)
case 5: colour = rainbow(map(i, -angle, angle, 127, 63)); break; // Red to green (low battery etc)
default: colour = TFT_BLUE; break; // Fixed colour
}
tft.fillTriangle(x0, y0, x1, y1, x2, y2, colour);
tft.fillTriangle(x1, y1, x2, y2, x3, y3, colour);
//text_colour = colour; // Save the last colour drawn
}
else // Fill in blank segments
{
tft.fillTriangle(x0, y0, x1, y1, x2, y2, TFT_GREY);
tft.fillTriangle(x1, y1, x2, y2, x3, y3, TFT_GREY);
}
}
// Convert value to a string
char buf[10];
byte len = 3; if (value > 999) len = 5;
dtostrf(value, len, 0, buf);
buf[len] = ' '; buf[len+1] = 0; // Add blanking space and terminator, helps to centre text too!
// Set the text colour to default
tft.setTextSize(1);
if (value<vmin || value>vmax) {
drawAlert(x,y+90,50,1);
}
else {
drawAlert(x,y+90,50,0);
}
tft.setTextColor(TFT_WHITE, TFT_BLACK);
// Uncomment next line to set the text colour to the last segment value!
tft.setTextColor(colour, TFT_BLACK);
tft.setTextDatum(MC_DATUM);
// Print value, if the meter is large then use big font 8, othewise use 4
if (r > 84) {
tft.setTextPadding(55*3); // Allow for 3 digits each 55 pixels wide
tft.drawString(buf, x, y, 8); // Value in middle
}
else {
tft.setTextPadding(3 * 14); // Allow for 3 digits each 14 pixels wide
tft.drawString(buf, x, y, 4); // Value in middle
}
tft.setTextSize(1);
tft.setTextPadding(0);
// Print units, if the meter is large then use big font 4, othewise use 2
tft.setTextColor(TFT_WHITE, TFT_BLACK);
if (r > 84) tft.drawString(units, x, y + 60, 4); // Units display
else tft.drawString(units, x, y + 15, 2); // Units display
// Calculate and return right hand side x coordinate
return x + r;
}
void drawAlert(int x, int y , int side, bool draw)
{
if (draw && !range_error) {
drawIcon(alert, x - alertWidth/2, y - alertHeight/2, alertWidth, alertHeight);
range_error = 1;
}
else if (!draw) {
tft.fillRect(x - alertWidth/2, y - alertHeight/2, alertWidth, alertHeight, TFT_BLACK);
range_error = 0;
}
}
// #########################################################################
// Return a 16 bit rainbow colour
// #########################################################################
unsigned int rainbow(byte value)
{
// Value is expected to be in range 0-127
// The value is converted to a spectrum colour from 0 = blue through to 127 = red
byte red = 0; // Red is the top 5 bits of a 16 bit colour value
byte green = 0;// Green is the middle 6 bits
byte blue = 0; // Blue is the bottom 5 bits
byte quadrant = value / 32;
if (quadrant == 0) {
blue = 31;
green = 2 * (value % 32);
red = 0;
}
if (quadrant == 1) {
blue = 31 - (value % 32);
green = 63;
red = 0;
}
if (quadrant == 2) {
blue = 0;
green = 63;
red = value % 32;
}
if (quadrant == 3) {
blue = 0;
green = 63 - 2 * (value % 32);
red = 31;
}
return (red << 11) + (green << 5) + blue;
}
// #########################################################################
// Return a value in range -1 to +1 for a given phase angle in degrees
// #########################################################################
float sineWave(int phase) {
return sin(phase * 0.0174532925);
}
//====================================================================================
// This is the function to draw the icon stored as an array in program memory (FLASH)
//====================================================================================
// To speed up rendering we use a 64 pixel buffer
#define BUFF_SIZE 64
// Draw array "icon" of defined width and height at coordinate x,y
// Maximum icon size is 255x255 pixels to avoid integer overflow
void drawIcon(const unsigned short* icon, int16_t x, int16_t y, int8_t width, int8_t height) {
uint16_t pix_buffer[BUFF_SIZE]; // Pixel buffer (16 bits per pixel)
tft.startWrite();
// Set up a window the right size to stream pixels into
tft.setAddrWindow(x, y, width, height);
// Work out the number whole buffers to send
uint16_t nb = ((uint16_t)height * width) / BUFF_SIZE;
// Fill and send "nb" buffers to TFT
for (int i = 0; i < nb; i++) {
for (int j = 0; j < BUFF_SIZE; j++) {
pix_buffer[j] = pgm_read_word(&icon[i * BUFF_SIZE + j]);
}
tft.pushColors(pix_buffer, BUFF_SIZE);
}
// Work out number of pixels not yet sent
uint16_t np = ((uint16_t)height * width) % BUFF_SIZE;
// Send any partial buffer left over
if (np) {
for (int i = 0; i < np; i++) pix_buffer[i] = pgm_read_word(&icon[nb * BUFF_SIZE + i]);
tft.pushColors(pix_buffer, np);
}
tft.endWrite();
}