eLinux.org - Changes related to "BeagleBone 6502 RemoteProc cape" [en]

Ti AM33XX PRUSSv2

2013-05-22T01:34:28Z

Fixed miss labled pin

2013-05-17T15:12:23Z

Added PRU FAQ

2013-05-16T23:45:33Z

‎Resources: typo

2013-05-16T16:50:02Z

Added link to PRU debugger "prude"

2013-05-16T15:49:51Z

‎PRU to Host (PRU to ARM Cortex-A8):

@@ Line 154: / Line 154: @@
 |1
 |Mode_5
-|P9_31
+|P9_29
 |SPI1_D0
 |mcasp0_fsx

@@ Line 523: / Line 523: @@
 == Resources ==
 * [https://github.com/beagleboard/am335x_pru_package AM335x PRU support package on Github]
 * [https://github.com/beagleboard/am335x_pru_package/blob/master/am335xPruReferenceGuide.pdf?raw=true AM335x PRU-ICSS Reference Guide]

@@ Line 531: / Line 531: @@
 * A userspace [https://docs.google.com/file/d/0B80aJokrBccAV1paMTU0bjM1OXc/edit?usp=sharing debugging utility] with credit to PRU_EVTOUT_2 from the #beagle IRC channel.
 * ncurses based debugger work has started at [https://github.com/wz2b/prude here].
 == Examples ==

← Older revision		Revision as of 16:50, 16 May 2013
Line 530:		Line 530:

	* A userspace [https://docs.google.com/file/d/0B80aJokrBccAV1paMTU0bjM1OXc/edit?usp=sharing debugging utility] with credit to PRU_EVTOUT_2 from the #beagle IRC channel.		* A userspace [https://docs.google.com/file/d/0B80aJokrBccAV1paMTU0bjM1OXc/edit?usp=sharing debugging utility] with credit to PRU_EVTOUT_2 from the #beagle IRC channel.
		+	* ncurses based debugger work has started at [https://github.com/wz2b/prude here].

	== Examples ==		== Examples ==

← Older revision		Revision as of 15:49, 16 May 2013
(One intermediate revision by one user not shown)
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	=== PRU to Host (PRU to ARM Cortex-A8) ===		=== PRU to Host (PRU to ARM Cortex-A8) ===
		+	Include the uio_pruss kernel driver by using '''modprobe uio_pruss''' or the steps outlined above, if that does not work.
		+	Then in a project include the header files for the am335x_pru_package.

		+	#define PRU_NUM0 0
		+	// Driver header file
		+	#include <prussdrv.h>
		+	#include <pruss_intc_mapping.h>

		+	/* Then, initialize the interrupt controller data */
		+	tpruss_intc_initdata pruss_intc_initdata = PRUSS_INTC_INITDATA;
		+	/* Initialize the PRU */
		+	prussdrv_init ();
		+	/* Get the interrupt initialized */
		+	prussdrv_pruintc_init(&pruss_intc_initdata)

		+	/* Execute example on PRU0 where first argument is the PRU# and second is the assembly to execute*/
		+	prussdrv_exec_program (PRU_NUM0, "./example.bin");
		+
		+	/* Wait until PRU0 sends the interrupt*/
		+	prussdrv_pru_wait_event (PRU_EVTOUT_0);
		+	/* Clear the interrupt*/
		+	prussdrv_pru_clear_event (PRU0_ARM_INTERRUPT);
		+
		+	The PRU (in this case 0) will have the following in the example.bin file to trigger the interrupt:
		+	#define PRU0_ARM_INTERRUPT 19
		+	MOV r31.b0, PRU0_ARM_INTERRUPT+16
		+
		+	Register 31 allows for control of the INTC for the PRU.

	=== Host to PRU (ARM Cortex-A8 to PRU) ===		=== Host to PRU (ARM Cortex-A8 to PRU) ===