raspberry pi: add doc for model b

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>

diff --git a/README.md b/README.md
index 66eeced..69e18e2 100644 (file)
--- a/README.md
+++ b/README.md
@@ -15,12 +15,18 @@ low level communication protocol by high level languages & constructs.
 Supported Boards
 ================
 
+X86
+---
 * [Galileo Gen 1 - Rev D](../master/docs/galileorevd.md)
 * [Galileo Gen 2 - Rev H](../master/docs/galileorevh.md)
 * [Edison](../master/docs/edison.md)
 * [Intel DE3815](../master/docs/intel_de3815.md)
 * [Minnowboard Max](../master/docs/minnow_max.md)
 
+ARM
+---
+* [Raspberry Pi - Model B](../master/docs/raspberry_pi_b.md)
+
 Installing on your board
 ========
 

diff --git a/docs/raspberry_pi_b.md b/docs/raspberry_pi_b.md
new file mode 100644 (file)
index 0000000..118a3e6
--- /dev/null
+++ b/docs/raspberry_pi_b.md
@@ -0,0 +1,53 @@
+Raspberry Pi Model B    {#rasppib}
+====================
+
+The Raspberry Pi is based on the Broadcom BCM2835 system on a chip,
+which includes an ARM1176JZF-S 700 MHz processor, VideoCore IV GPU
+and was originally shipped with 256 megabytes of RAM, later 
+upgraded (Model B & Model B+) to 512 MB.
+
+Revision Support
+----------------
+Currently only rev 1 is supported.
+
+Interface notes
+---------------
+**GPIO** Supported on pin 6,10,11,12,14,15,17,21
+
+**PWM** Whilst the Raspberry Pi is meant to have 1 PWM channel this is currently not supported.
+
+**I2C** The blacklist for the kernel module will need to be removed and the `i2c-dev` needs to be loaded.
+
+**SPI** The blacklist for the kernel module needs to be removed and `spidev` loaded
+
+Pin Mapping
+-----------
+
+| MRAA Number | Physical Pin | Function |
+|-------------|--------------|----------|
+| 1           | P1-01        | 3V3 VCC  |
+| 2           | P1-02        | 5V VCC   |
+| 3           | P1-03        | I2C SDA  |
+| 4           | P1-04        | 5V VCC   |
+| 5           | P1-05        | I2C SCL  |
+| 6           | P1-06        | GND      |
+| 7           | P1-07        | GPIO(4)  |
+| 8           | P1-08        | UART TX  |
+| 9           | P1-09        | GND      |
+| 10           | P1-10        | UART RX  |
+| 11          | P1-11        | GPIO(17) |
+| 12          | P1-12        | GPIO(18) |
+| 13          | P1-13        | GPIO(21) |
+| 14          | P1-14        | GND      |
+| 15          | P1-15        | GPIO(22) |
+| 16          | P1-16        | GPIO(23) |
+| 17          | P1-17        | 3V3 VCC  |
+| 18          | P1-18        | GPIO(24) |
+| 19          | P1-19        | SPI MOSI |
+| 20          | P1-20        | GND      |
+| 21          | P1-21        | SPI MISO |
+| 22          | P1-22        | GPIO(25) |
+| 23          | P1-23        | SPI SCL  |
+| 24          | P1-24        | SPI CS0  |
+| 25          | P1-25        | GND      |
+| 26          | P1-26        | SPI CS1  |