nemunaire/waveshareteam-e-Paper
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Added a function that can refresh only part of the screen area.

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SSYYL 2021-12-29 12:01:53 +08:00
commit ce29fad2c3
4 changed files with 376 additions and 316 deletions
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76
Arduino/epd3in7/epd3in7.ino
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@ -32,51 +32,55 @@
#define COLORED 0
#define UNCOLORED 1
UBYTE image[800];
UBYTE image[700];
Paint paint(image, 0, 0); // width should be the multiple of 8
UDOUBLE time_start_ms;
UDOUBLE time_now_s;
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Epd epd;
if (epd.Init() != 0) {
Serial.print("e-Paper init failed");
return;
}
Serial.print("3.7inch e-paper demo\r\n ");
Serial.print("e-Paper Clear\r\n ");
epd.Clear(1);
Serial.print("draw image\r\n ");
epd.DisplayFrame(IMAGE_DATA);
delay(4000);
epd.Clear(0);
UBYTE i;
time_start_ms = millis();
for(i=0; i<10; i++) {
time_now_s = (millis() - time_start_ms) / 1000;
char time_string[] = {'0', '0', ':', '0', '0', '\0'};
time_string[0] = time_now_s / 60 / 10 + '0';
time_string[1] = time_now_s / 60 % 10 + '0';
time_string[3] = time_now_s % 60 / 10 + '0';
time_string[4] = time_now_s % 60 % 10 + '0';
paint.SetWidth(48);
paint.SetHeight(100);
// put your setup code here, to run once:
Serial.begin(115200);
Epd epd;
if (epd.Init() != 0) {
Serial.print("e-Paper init failed");
return;
}
Serial.print("3.7inch e-paper demo\r\n ");
Serial.print("e-Paper Clear\r\n ");
epd.Clear(1);
Serial.print("draw image\r\n ");
epd.DisplayFrame(IMAGE_DATA); // Set base image
delay(3000);
paint.SetWidth(40);
paint.SetHeight(120);
paint.SetRotate(ROTATE_270);
paint.Clear(UNCOLORED);
paint.DrawStringAt(20, 10, time_string, &Font16, COLORED);
Serial.print("refresh------\r\n ");
epd.DisplayFrame_Partial(paint.GetImage(), 20, 100, 48, 100);
}
Serial.print("clear and sleep......\r\n ");
epd.Clear(1);
epd.Sleep();
UBYTE i;
time_start_ms = millis();
for(i=0; i<10; i++) {
time_now_s = (millis() - time_start_ms) / 1000;
char time_string[] = {'0', '0', ':', '0', '0', '\0'};
time_string[0] = time_now_s / 60 / 10 + '0';
time_string[1] = time_now_s / 60 % 10 + '0';
time_string[3] = time_now_s % 60 / 10 + '0';
time_string[4] = time_now_s % 60 % 10 + '0';
paint.Clear(UNCOLORED);
paint.DrawStringAt(20, 10, time_string, &Font16, COLORED);
Serial.print("refresh------\r\n ");
// epd.DisplayFrame_Partial(paint.GetImage(), 20, 100, 40, 120); // Width must be a multiple of 8
epd.DisplayFrame_Part(paint.GetImage(), 40, 30, 80, 140, false); // Xstart must be a multiple of 8
}
Serial.print("clear and sleep......\r\n ");
epd.Init();
epd.Clear(1);
epd.Sleep();
}
void loop() {
// put your main code here, to run repeatedly:
// put your main code here, to run repeatedly:
}