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Diffstat (limited to 'examples/imx7d_val_m4/demo_apps/rpmsg/pingpong_bm/pingpong_bm.c')
-rw-r--r-- | examples/imx7d_val_m4/demo_apps/rpmsg/pingpong_bm/pingpong_bm.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/examples/imx7d_val_m4/demo_apps/rpmsg/pingpong_bm/pingpong_bm.c b/examples/imx7d_val_m4/demo_apps/rpmsg/pingpong_bm/pingpong_bm.c new file mode 100644 index 0000000..2051bc2 --- /dev/null +++ b/examples/imx7d_val_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 + ******************************************************************************/ + |