DigitalInfinity/ESP32-PaxCounter
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QR display (experimental)

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This commit is contained in:
Verkehrsrot 2019-09-29 17:38:16 +02:00
parent c6c455b922
commit 8b42cd3e3d
1 changed files with 29 additions and 12 deletions
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41
src/display.cpp
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@ -42,8 +42,8 @@ static const char TAG[] = __FILE__;
#define USE_BACKBUFFER // for display library
// settings for qr code generator
#define ELEMENT_SIZE 3
#define QR_VERSION 1
#define QR_VERSION 3 // 29 x 29px
#define QR_SCALEFACTOR 2 // 29 -> 58x < 64px
#define LOCK_VERSION 1
// helper arry for converting month values to text
@ -94,21 +94,36 @@ void init_display(void) {
uint8_t buf[8];
const uint8_t *p;
os_getDevEui((u1_t *)buf);
dp_printf(0, 6, 0, 0, "DEVEUI:");
dp_printf(0, 6, 0, 1, "LORAWAN DEVEUI: ");
for (uint8_t i = 0; i < 8; i++) {
p = buf + 7 - i;
dp_printf(i * 16, 7, 0, 0, "%02X", *p);
dp_printf(i * 16, 7, 0, 1, "%02X", *p);
}
delay(3000);
oledFill(0x00, 1);
// we need to invert display to show QR code
#ifndef DISPLAY_FLIP
oledInit(OLED_128x64, ANGLE_0, true, -1, -1, 400000L);
#else
oledInit(OLED_128x64, ANGLE_FLIPY, true, -1, -1, 400000L);
#endif
// print DEVEUI as QR code
const char *eui = reinterpret_cast<const char *>(buf);
dp_printqr(0, 0, eui); // to come: we need inverted display for QR code
#endif // HAS_LOR
delay(3000);
dp_printqr(3, 3, eui);
delay(300000);
oledFill(0x00, 1);
// display back to normal
#ifndef DISPLAY_FLIP
oledInit(OLED_128x64, ANGLE_0, true, -1, -1, 400000L);
#else
oledInit(OLED_128x64, ANGLE_FLIPY, true, -1, -1, 400000L);
#endif
#endif // HAS_LORA
oledPower(cfg.screenon); // set display off if disabled
I2C_MUTEX_UNLOCK(); // release i2c bus access
@ -325,13 +340,15 @@ void dp_printf(int x, int y, int font, int inv, const char *format, ...) {
}
void dp_printqr(int offset_x, int offset_y, const char *Message) {
uint8_t qrcodeData[qrcode_getBufferSize(1)];
uint8_t qrcodeData[qrcode_getBufferSize(QR_VERSION)];
qrcode_initText(&qrcode, qrcodeData, QR_VERSION, ECC_HIGH, Message);
for (int y = 0; y < qrcode.size; y++)
for (int x = 0; x < qrcode.size; x++)
if (qrcode_getModule(&qrcode, x, y)) // BLACK
oledfillRect(x * ELEMENT_SIZE + offset_x, y * ELEMENT_SIZE + offset_y,
ELEMENT_SIZE, ELEMENT_SIZE, true);
if (qrcode_getModule(&qrcode, x, y)) // "black"
oledfillRect(x * QR_SCALEFACTOR + offset_x,
y * QR_SCALEFACTOR + offset_y, QR_SCALEFACTOR,
QR_SCALEFACTOR, true);
oledfillRect(64, 0, 64, 64, true); // clear white space beneath qr code
}
void oledfillRect(int x, int y, int width, int height, int bRender) {