419a398c01
Add a configurable delay between when a byte is received and MODEM_PIPE_EVENT_RECEIVE_READY is sent. This fixes data reception at baud rates above 460800, and most likely also reduces the workload at any baud rate when receiving bytes by not going through the work item and callbacks for every single byte. Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/*
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* Copyright (c) 2023 Trackunit Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "modem_backend_uart_isr.h"
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#include "modem_backend_uart_async.h"
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#include <zephyr/modem/backend/uart.h>
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#include <string.h>
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static void modem_backend_uart_receive_ready_handler(struct k_work *item)
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{
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struct modem_backend_uart *backend = CONTAINER_OF(
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k_work_delayable_from_work(item), struct modem_backend_uart, receive_ready_work);
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modem_pipe_notify_receive_ready(&backend->pipe);
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}
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static void modem_backend_uart_transmit_idle_handler(struct k_work *item)
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{
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struct modem_backend_uart *backend =
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CONTAINER_OF(item, struct modem_backend_uart, transmit_idle_work);
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modem_pipe_notify_transmit_idle(&backend->pipe);
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}
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struct modem_pipe *modem_backend_uart_init(struct modem_backend_uart *backend,
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const struct modem_backend_uart_config *config)
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{
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__ASSERT_NO_MSG(config->uart != NULL);
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__ASSERT_NO_MSG(config->receive_buf != NULL);
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__ASSERT_NO_MSG(config->receive_buf_size > 1);
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__ASSERT_NO_MSG((config->receive_buf_size % 2) == 0);
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__ASSERT_NO_MSG(config->transmit_buf != NULL);
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__ASSERT_NO_MSG(config->transmit_buf_size > 0);
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memset(backend, 0x00, sizeof(*backend));
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backend->uart = config->uart;
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k_work_init_delayable(&backend->receive_ready_work,
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modem_backend_uart_receive_ready_handler);
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k_work_init(&backend->transmit_idle_work, modem_backend_uart_transmit_idle_handler);
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#ifdef CONFIG_MODEM_BACKEND_UART_ASYNC
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if (modem_backend_uart_async_is_supported(backend)) {
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modem_backend_uart_async_init(backend, config);
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return &backend->pipe;
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}
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#endif /* CONFIG_MODEM_BACKEND_UART_ASYNC */
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#ifdef CONFIG_MODEM_BACKEND_UART_ISR
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modem_backend_uart_isr_init(backend, config);
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return &backend->pipe;
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#endif /* CONFIG_MODEM_BACKEND_UART_ISR */
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__ASSERT(0, "No supported UART API");
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return NULL;
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}
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