Example application for two 16x8 Adafruit LED Backpacks to make a 32 x 8 matrix.
Dependencies: Adafruit_32x8matrix
Fork of Adafruit_LEDBackpack_16x8_App by
This project uses two 16x8 1.2" LED Matrix + Backpacks stuck together to make a 32x8 double-length matrix.
main.cpp
- Committer:
- maclobdell
- Date:
- 2016-12-21
- Revision:
- 1:dd1d1b64b9a5
- Parent:
- 0:2eec8a9428ea
- Child:
- 2:ffe5cf2557e3
File content as of revision 1:dd1d1b64b9a5:
#include "mbed.h" #include "Adafruit_LEDBackpack.h" #include "Adafruit_GFX.h" I2C i2c(D14, D15); //mpl - something with stdio screwing things up. need to define serial port to use for debug Serial pc (USBTX,USBRX); Adafruit_16x8matrix matrix = Adafruit_16x8matrix(&i2c); Adafruit_16x8matrix matrix2 = Adafruit_16x8matrix(&i2c); void scrollText(char * buffer, uint8_t buf_len); int main() { /* matrix[0].begin(0x70); //while(1) // { matrix[0].clear(); for (int i = 0; i < 16; i++) { for (int j = 0; j < 8; j++) { matrix.drawPixel(i, j, LED_ON); matrix.writeDisplay(); // write the changes we just made to the display Thread::wait(10); } } matrix2.begin(0x71); matrix2.clear(); for (int i = 0; i < 16; i++) { for (int j = 0; j < 8; j++) { matrix2.drawPixel(i, j, LED_ON); matrix2.writeDisplay(); // write the changes we just made to the display Thread::wait(10); } } */ matrix2.begin(0x71); matrix2.clear(); matrix2.writeDisplay(); // matrix2.writeChar('A'); // matrix2.writeDisplay(); // Thread::wait(10); matrix.begin(0x70); matrix.clear(); matrix.writeDisplay(); // matrix.writeChar('A'); // matrix.writeChar('B'); // matrix.writeChar('C'); // matrix.writeDisplay(); char buffer [50]; sprintf (buffer, "Hello\0"); scrollText(buffer,strlen(buffer)); // } } void scrollText(char * buffer, uint8_t buf_len) { uint8_t x_pos; uint8_t m; char c; //pc.printf("buffer = %s, len = %d\r\n", buffer, buf_len); //Need to start at the end and draw backwards, each time scrolling one pixel to the right // then, stop when get to first character. //find example /* code inspired by LOLShield library */ int xoff=31;/* set offset to the right end of the screen*/ for(int i=0; i<buf_len*5 +52; i++){ /*scrolling loop*/ for(int j=0; j<buf_len; j++){ /*loop over all of the chars in the text*/ if(xoff + j*6 <32) { matrix.drawChar(xoff + j*6, 0, buffer[j], 1, 0, 1); matrix.writeDisplay(); }else { matrix2.drawChar(xoff + j*6-32, 0, buffer[j], 1, 0, 1); matrix2.writeDisplay(); } } xoff--; /* decrement x offset*/ Thread::wait(70); matrix.clear(); matrix2.clear(); } }