1 files changed, 148 insertions, 0 deletions
diff --git a/examples/imx7_colibri_m4/demo_apps/rpmsg/pingpong_bm/pingpong_bm.c b/examples/imx7_colibri_m4/demo_apps/rpmsg/pingpong_bm/pingpong_bm.c
new file mode 100644
index 0000000..2051bc2
--- /dev/null
+++ b/examples/imx7_colibri_m4/demo_apps/rpmsg/pingpong_bm/pingpong_bm.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ *   of conditions and the following disclaimer.
+ *
+ * o Redistributions in binary form must reproduce the above copyright notice, this
+ *   list of conditions and the following disclaimer in the documentation and/or
+ *   other materials provided with the distribution.
+ *
+ * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+///////////////////////////////////////////////////////////////////////////////
+//  Includes
+///////////////////////////////////////////////////////////////////////////////
+#include <string.h>
+#include "rpmsg/rpmsg.h"
+#include "board.h"
+#include "mu_imx.h"
+#include "debug_console_imx.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions
+////////////////////////////////////////////////////////////////////////////////
+/*
+ * APP decided interrupt priority
+ */
+#define APP_MU_IRQ_PRIORITY 3
+
+typedef struct the_message
+{
+   uint32_t  DATA;
+} THE_MESSAGE, * THE_MESSAGE_PTR;
+
+////////////////////////////////////////////////////////////////////////////////
+// Code
+////////////////////////////////////////////////////////////////////////////////
+/* Globals */
+static volatile struct rpmsg_channel *app_chnl;
+static volatile int pingpong_finished = 0;
+static THE_MESSAGE msg;
+
+static void rpmsg_read_cb(struct rpmsg_channel *rp_chnl, void *data, int len,
+                void * priv, unsigned long src)
+{
+    if(len > sizeof(THE_MESSAGE))
+    {
+        PRINTF("Received size %d exceed pingpong buffer size\r\n", len);
+        return;
+    }
+
+    /* Drop extra message received after pingpong finished */
+    if (pingpong_finished)
+        return;
+
+    /* Store received message to global buffer */
+    memcpy(&msg, data, len);
+
+    PRINTF("Get Data From Master Side : %d\r\n", msg.DATA);
+
+    /* Send the message back to the remoteproc */
+    msg.DATA++;
+    rpmsg_send((struct rpmsg_channel *)app_chnl, &msg, sizeof(THE_MESSAGE));
+
+    /* Set pingpong_finished to 1 per requirement */
+}
+
+/* rpmsg_rx_callback will call into this for a channel creation event*/
+static void rpmsg_channel_created(struct rpmsg_channel *rp_chnl)
+{
+    /* We should give the created rp_chnl handler to app layer */
+    app_chnl = rp_chnl;
+    PRINTF("Name service handshake is done, M4 has setup a rpmsg channel [%d ---> %d]\r\n", app_chnl->src, app_chnl->dst);
+}
+
+static void rpmsg_channel_deleted(struct rpmsg_channel *rp_chnl)
+{
+}
+
+/*
+ * MU Interrrupt ISR
+ */
+void BOARD_MU_HANDLER(void)
+{
+    /*
+     * calls into rpmsg_handler provided by middleware
+     */
+    rpmsg_handler();
+}
+
+/*!
+ * @brief Main function
+ */
+int main (void)
+{
+    struct remote_device *rdev;
+
+    hardware_init();
+
+    /*
+     * Prepare for the MU Interrupt
+     *  MU must be initialized before rpmsg init is called
+     */
+    MU_Init(BOARD_MU_BASE_ADDR);
+    NVIC_SetPriority(BOARD_MU_IRQ_NUM, APP_MU_IRQ_PRIORITY);
+    NVIC_EnableIRQ(BOARD_MU_IRQ_NUM);
+
+    /* Print the initial banner */
+    PRINTF("\r\nRPMSG PingPong Bare Metal Demo...\r\n");
+
+    /* RPMSG Init as REMOTE */
+    PRINTF("RPMSG Init as Remote\r\n");
+    rpmsg_init(0 /*REMOTE_CPU_ID*/, &rdev, rpmsg_channel_created, rpmsg_channel_deleted, rpmsg_read_cb, RPMSG_MASTER);
+
+    /* wait until the pingpong demo finished */
+    while (!pingpong_finished)
+    {
+    }
+
+    PRINTF("\r\nMessage pingpong finished\r\n");
+
+    rpmsg_deinit(rdev);
+
+    return 0;
+}
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
+