unable to use char array with 1.8" lcd

Other Hardware Displays
1

Hello there,

I am quite experienced with c++, Bash, Python, and R

I have a 1.8" TFT display with an SD card and I am using the Adafruit_ST7735 library. I can get the example (spitftbitmap) to work with my own bitmaps if I use a literal in the bmpDraw() function.

i.e bmpDraw("hey.bmp", 0 ,0) works just fine.

I can't however, get that same function to loop through a char array. for example...

char my_imgs[] = {"hey.bmp", "whats.bmp", "up.bmp"}   // char and const char behave the same

for (int x = 0; x <= 2; x++) {

bmpDraw(my_imgs[x], 0, 0)
delay(5000);
}

Fails with the serial monitor telling me that there is no file called 'hey.bmp'

"Initialize SD card....ok!

loading img 'hey.bmp'
File not found. "

I also notice that the serial monitor appears to not be printing the contents of the root directory on the sd card when I attempt the loop. That is, it prints the contents of the sd card when I use the literal/const declaration.

All that I get is a blue screen.

here's the kicker

If I put the literal deceleration after the loop, the serial monitor says that it has loaded the image, but the screen simply turns completely white.

Any ideas or leads?
I have done much searching without turning anything up...

2

I solved the issue. It appears to have been a high impedance connection as I re-soldered a few wires and the display began to behave.

Baisically, it would recognize the sd card on start up, but didn't have enough umph to get the data.