| /* |
| * Copyright 2024 NXP |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <zephyr/kernel.h> |
| #include <zephyr/drivers/mbox.h> |
| |
| static K_SEM_DEFINE(g_mbox_data_rx_sem, 0, 1); |
| |
| static mbox_channel_id_t g_mbox_received_data; |
| static mbox_channel_id_t g_mbox_received_channel; |
| |
| static void callback(const struct device *dev, mbox_channel_id_t channel_id, void *user_data, |
| struct mbox_msg *data) |
| { |
| memcpy(&g_mbox_received_data, data->data, data->size); |
| g_mbox_received_channel = channel_id; |
| |
| k_sem_give(&g_mbox_data_rx_sem); |
| } |
| |
| int main(void) |
| { |
| const struct mbox_dt_spec tx_channel = MBOX_DT_SPEC_GET(DT_PATH(mbox_consumer), tx); |
| const struct mbox_dt_spec rx_channel = MBOX_DT_SPEC_GET(DT_PATH(mbox_consumer), rx); |
| struct mbox_msg msg = {0}; |
| uint32_t message = 0; |
| |
| printk("mbox_data Client demo started\n"); |
| |
| const int max_transfer_size_bytes = mbox_mtu_get_dt(&tx_channel); |
| /* Sample currently supports only transfer size up to 4 bytes */ |
| if ((max_transfer_size_bytes < 0) || (max_transfer_size_bytes > 4)) { |
| printk("mbox_mtu_get() error\n"); |
| return 0; |
| } |
| |
| if (mbox_register_callback_dt(&rx_channel, callback, NULL)) { |
| printk("mbox_register_callback() error\n"); |
| return 0; |
| } |
| |
| if (mbox_set_enabled_dt(&rx_channel, 1)) { |
| printk("mbox_set_enable() error\n"); |
| return 0; |
| } |
| |
| while (message < 100) { |
| msg.data = &message; |
| msg.size = max_transfer_size_bytes; |
| |
| printk("Client send (on channel %d) value: %d\n", tx_channel.channel_id, message); |
| if (mbox_send_dt(&tx_channel, &msg) < 0) { |
| printk("mbox_send() error\n"); |
| return 0; |
| } |
| |
| k_sem_take(&g_mbox_data_rx_sem, K_FOREVER); |
| message = g_mbox_received_data; |
| |
| printk("Client received (on channel %d) value: %d\n", g_mbox_received_channel, |
| message); |
| message++; |
| } |
| |
| printk("mbox_data Client demo ended\n"); |
| return 0; |
| } |