Mac Lobdell / Mbed OS Adafruit_LEDBackpack_32x8_App

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 Mac Lobdell

/media/uploads/maclobdell/austin_iot_lab.jpg

This project uses two 16x8 1.2" LED Matrix + Backpacks stuck together to make a 32x8 double-length matrix.

Files at this revision

API Documentation at this revision

Revision 8:5f5ceafa826d, committed 2017-12-11

Comitter:
maclobdell
Date:
Mon Dec 11 19:23:47 2017 +0000
Parent:
7:1bd79d71396a
Commit message:
updated to demonstrate new playText function which parses through a sentence and either shows or scrolls each word depending on the size

Changed in this revision

Adafruit_32x8matrix.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed-os.lib Show annotated file Show diff for this revision Revisions of this file 
diff -r 1bd79d71396a -r 5f5ceafa826d Adafruit_32x8matrix.lib
--- a/Adafruit_32x8matrix.lib	Wed Jun 28 19:44:15 2017 +0000
+++ b/Adafruit_32x8matrix.lib	Mon Dec 11 19:23:47 2017 +0000
@@ -1,1 +1,1 @@
-https://developer.mbed.org/users/maclobdell/code/Adafruit_32x8matrix/#acc3c726ffe3
+https://developer.mbed.org/users/maclobdell/code/Adafruit_32x8matrix/#cdcd2d7d83c3

diff -r 1bd79d71396a -r 5f5ceafa826d main.cpp
--- a/main.cpp	Wed Jun 28 19:44:15 2017 +0000
+++ b/main.cpp	Mon Dec 11 19:23:47 2017 +0000
@@ -1,56 +1,42 @@
+/*
+ * Copyright (c) 2016 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
 #include "mbed.h"
  
 #include "Adafruit_32x8matrix.h"
-
+ 
 #define I2C_ADDR1 0x70
 #define I2C_ADDR2 0x71
 #define ROTATION1 0
 #define ROTATION2 2
 #define BRIGHTNESS 1
-
-Serial pc (USBTX,USBRX);
-
-void myidlethread(void);
-
+ 
 I2C i2c(D14, D15);
-
+ 
 Adafruit_32x8matrix matrix(&i2c, I2C_ADDR1, I2C_ADDR2, ROTATION1, ROTATION2, BRIGHTNESS);
-
+ 
 int main() {
-
-    char buffer [50];
-
-    Thread::attach_idle_hook(myidlethread);
+  char buffer [50];
 
-    sprintf(buffer, "This\0");
-    matrix.showText(buffer,strlen(buffer), 1);
-    
-    sprintf(buffer, "is\0");
-    matrix.showText(buffer,strlen(buffer), 1);
-    
-    sprintf(buffer, "the\0");
-    matrix.showText(buffer,strlen(buffer), 1);        
-    
-    sprintf (buffer, "IoT Lab\0");
-    matrix.scrollText(buffer,strlen(buffer), 100);
-
-    Thread::wait(1000);
-        
-    sprintf(buffer, "Welcome\0");
-                
-    while(1)
-    {
-        matrix.scrollText(buffer,strlen(buffer), 80);
-                 
+  while(1)
+  { 
+        snprintf(buffer, 50, "Hi, how are you today?\0");   //pass in max chars to prevent overflow
+        matrix.playText(buffer,strlen(buffer), 1);
+                           
         Thread::wait(10000);
     }
-
+ 
 }
-
-void myidlethread(void)
-{
-  sleep();   //go to sleep, wait for an interrupt 
-
-}
-
-

diff -r 1bd79d71396a -r 5f5ceafa826d mbed-os.lib
--- a/mbed-os.lib	Wed Jun 28 19:44:15 2017 +0000
+++ b/mbed-os.lib	Mon Dec 11 19:23:47 2017 +0000
@@ -1,1 +1,1 @@
-https://github.com/armmbed/mbed-os/#532da7133f7d51db958eacb2b5f13e7cf7feb81f
+https://github.com/armmbed/mbed-os/#5f6572179d66ce4c09d6517b659ac51133cc980d