Preparing for AVR USB driver

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@3725 7fd9a85b-ad96-42d3-883c-3090e2eb8679

2 files changed, 65 insertions, 17 deletions

diff --git a/nuttx/configs/teensy/README.txt b/nuttx/configs/teensy/README.txt
index ad0cd36954..7dedaedf85 100644
--- a/nuttx/configs/teensy/README.txt
+++ b/nuttx/configs/teensy/README.txt
@@ -12,6 +12,7 @@ Contents
   o Pin Usage
   o Halfkey Bootloader
   o Serial Console
+  o SD Connection
   o Toolchains
   o Windows Native Toolchains
   o NuttX buildroot Toolchain
@@ -51,7 +52,7 @@ Pin Usage
   10 (SS/PCINT0) PB0           Pad B0
   11 (PCINT1/SCLK) PB1         Pad B1
   12 (PDI/PCINT2/MOSI) PB2     Pad B2
-  13 (PDO/PCINT3/MISO) PB3     Pad1 B3
+  13 (PDO/PCINT3/MISO) PB3     Pad B3
   14 (PCINT4/OC.2A) PB4        Pad B4
   15 (PCINT5/OC.1A) PB5        Pad B5
   16 (PCINT6/OC.1B) PB6        Pad B6
@@ -145,6 +146,53 @@ Serial Console
   Plus power and ground.  There are numerous ground points and both USB 5V
   and Vcc are available.
 
+SD Connection
+^^^^^^^^^^^^^
+
+I have the SD-ADP SD/MMC Card Adaptor from www.gravitech.com
+(http://www.gravitech.us/sdcaad.html). Features: 
+
+  o On-board 3.3V regulator 
+  o Connect directly to 3.3V or 5.0V microcontroller 
+  o Card detect LED
+  o Includes 11-pin male header
+  o Board dimension: 2.0”x1.3”
+
+SD-ADP Pinout / SD Connection
+
+ -- ---- ----------- -------------------------------------------------------
+ J2 NAME SD CARD     DESCRIPTION
+ -- ---- ----------- -------------------------------------------------------
+  1 VIN   (reguator) Input power to the SD card (3.3V to 6.0V) 
+  2 GND   3,6,12,13  Common (Connects to the housing of the SD socket)
+  3 3V3   4 3.3V     Output voltage from the on-board 3.3V regulator (250mA) 
+  4 NC    9 NC       Connect to pin 9 on the SD card (not used in SPI mode) 
+  5 CS    1 DAT3/CS  Chip select *
+  6 DI    2 CMD/DI   Serial input data *
+  7 SCK   5 SCK      Serial clock *
+  8 DO    7 DAT0/DO  Serial output data 
+  9 IRQ   8 DAT1/IRQ Interrupt request, connect to pin 8 on the SD card (not used in SPI mode) 
+ 10 CD   10 CD       Card detect (active low) 
+ 11 WP   11 WP       Write protect
+ -- ---- ----------- -------------------------------------------------------
+
+  * Via a 74LCX245 level translator / buff
+
+Teensy SPI Connection
+
+  J2 NAME PIN NAME                     PAD
+   1 VIN
+   2 GND
+   3 3V3
+   4 NC
+   5 CS   10 (SS/PCINT0) PB0           Pad B0
+   6 DI   12 (PDI/PCINT2/MOSI) PB2     Pad B2
+   7 SCK  11 (PCINT1/SCLK) PB1         Pad B1
+   8 DO   13 (PDO/PCINT3/MISO) PB3     Pad B3
+   9 IRQ
+  10 CD
+  11 WP
+
 Toolchains
 ^^^^^^^^^^
 
diff --git a/nuttx/configs/teensy/src/up_leds.c b/nuttx/configs/teensy/src/up_leds.c
index 9ca1499f0e..7aabae5c3d 100755
--- a/nuttx/configs/teensy/src/up_leds.c
+++ b/nuttx/configs/teensy/src/up_leds.c
@@ -126,7 +126,7 @@ void up_ledon(int led)
 
   switch (led)
     {
-	case 0:
+    case 0:
       /* The steady state is OFF */
 
       g_ncoff = true;
@@ -135,18 +135,18 @@ void up_ledon(int led)
       /* Turn the LED off */
 
       PORTD &= ~(1 << 6);
-	  break;
+      break;
 
-	case 1:
-      /* Turn the LED on */
+    case 1:
+      /* The steady state is ON */
 
       PORTD |= (1 << 6);
       g_ncoff = false;
-	  break;
+      break;
 
-	default:
-	  return;
-	}
+    default:
+      return;
+    }
 }
 
 /****************************************************************************
@@ -168,7 +168,7 @@ void up_ledoff(int led)
 
   switch (led)
     {
-	case 2:
+    case 2:
       /* If the "no-change" state is OFF, then turn the LED off */
 
       if (g_ncoff)
@@ -177,18 +177,18 @@ void up_ledoff(int led)
           break;
         }
 
-	  /* Otherwise, fall through to turn the LED ON */
+      /* Otherwise, fall through to turn the LED ON */
 
-	case 0:
-	case 1:
+    case 0:
+    case 1:
       /* Turn the LED on */
 
       PORTD |= (1 << 6);
-	  break;
+      break;
 
-	default:
-	  return;
-	}
+    default:
+      return;
+    }
 }
 
 #endif /* CONFIG_ARCH_LEDS */