add pru setup instructions

diff --git a/doc/pru-setup b/doc/pru-setup
new file mode 100644 (file)
index 0000000..8f066c5
--- /dev/null
+++ b/doc/pru-setup
@@ -0,0 +1,23 @@
+1.) build/install pru kernel module driver & library objects/headers
+       a. https://github.com/beagleboard/am335x_pru_package.git
+       b. headers go in /usr/include/pruss/
+       c. in app_loader/interface/, `CROSS_COMPILE= make`
+       d. in app_loader/lib/ move objects to /usr/lib && `ldconfig`
+
+2.) build/install assembler
+       a. in pru_sw/utils/pasm_source/, `source linuxbuild` (wtf)
+       b. executable is one dir up, put in $PATH
+
+3.) load "kernel module"
+       a. `echo BB-BONE-PRU-01 > /sys/devices/bone_capemgr.9/slots`
+
+4.) write pru assembly
+       a. this is the most fun part
+       b. assemble object via binary in step 2
+
+5.) write host loader
+       a. C
+       b. init lib, setup intr.
+       c. load object from 4a via lib func
+       d. block until intr via lib func
+       e. clean up via lib func