Enumerate pinouts directory and show list of files available to display

hardware/_controller/README.md

@@ -40,6 +40,11 @@ These libraries are used by the project and can be installed via the Arduino IDE
 - Button for accessing password selection pop-up to help with password entry over serial
   - This should be configured via a text file on the sd card
 - Way to display pinouts stored on micro sd card
+  - Max number of files is 20
+  - Max filename length is 24 (this includes the ```.``` and extension of the file)
+  - The pinouts should be stored as bmp files *up to* 24 bit
+  - Pinouts should be sized as close to 320x240 as possible
+  - Pinouts should be stored at ```/pinouts``` on the root of the SD card
 - Configuration read from muxes (if attached)
 
 ## Implementation (Complete)

hardware/_controller/_controller.ino

@@ -30,8 +30,14 @@
 //    The adagfx driver was updated to be able to retun a reference to the sd card
 //    This will NOT work w/o the driver tweak
 //    The implementation of gslc_GetSDCard only lives in the ada cpp driver so we need to extern it here
+#define MAX_FILE_NAME_CHARS 21 // Add 1 to the max limit for null termination of filenames (SdFat API need)
+#define MAX_PINOUTS 24
+#define DIRECTORY_PINOUTS "/pinouts"
 #include "src/SdFat/SdFat.h"
 extern SdFat SD;
+SdFile dirFile;
+SdFile file;
+char fileName[MAX_FILE_NAME_CHARS]; // Account for null termination
 
 //<Includes !End!>
 
@@ -275,25 +281,25 @@ void setup() {
   gslc_InputMapAdd(&m_gui, GSLC_INPUT_PIN_ASSERT, KBD_SW_OK, GSLC_ACTION_SELECT, 0);
 
   // Setup list of diagrams
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Raspberry Pi");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Friendly Arm M4");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Orange Pi v1");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Banana Pi");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "O-Droid HC2");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Arduino (AVR)");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Ardunio (ARM)");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Cisco Console");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "APC Console");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Raritan Console");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Adafruit Feather");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "Adafruit Metro");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "[Unused 01]");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "[Unused 02]");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "[Unused 03]");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "[Unused 04]");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "[Unused 05]");
-  gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, "[Unused 06]");
-  gslc_ElemXListboxSetSel(&m_gui, m_pElemLsDiagrams, listDiagramSelection);
+
+  // List files in pinouts directory and add to main list of available pinout files
+  if (!dirFile.open(DIRECTORY_PINOUTS, O_RDONLY)) {
+    SD.errorHalt("open root failed");
+  }
+  int n = 0;
+  while (n < MAX_PINOUTS && file.openNext(&dirFile, O_RDONLY)) {
+    n++;
+    // Skip directories and hidden files.
+    if (!file.isSubDir() && !file.isHidden()) {
+      // Save dirIndex of file in directory.
+      file.getName(fileName, MAX_FILE_NAME_CHARS * sizeof(char));
+      #if defined(DBG_LOG) || defined(DBG_TOUCH) || defined(DBG_FRAME_RATE) || defined(DBG_DRAW_IMM) || defined(DBG_DRIVER)
+        Serial.println(fileName);
+      #endif
+      gslc_ElemXListboxAddItem(&m_gui, m_pElemLsDiagrams, fileName);
+    }
+    file.close();
+  }
 
   // Set diagrams slider max equal to the number of elements
   listDiagramsSize = gslc_ElemXListboxGetItemCnt(&m_gui, m_pElemLsDiagrams);