mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-14 19:30:36 +00:00
ac74d8b652
Replace the existing Apache 2.0 boilerplate header with an SPDX tag throughout the zephyr code tree. This patch was generated via a script run over the master branch. Also updated doc/porting/application.rst that had a dependency on line numbers in a literal include. Manually updated subsys/logging/sys_log.c that had a malformed header in the original file. Also cleanup several cases that already had a SPDX tag and we either got a duplicate or missed updating. Jira: ZEP-1457 Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c Signed-off-by: David B. Kinder <david.b.kinder@intel.com> Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
94 lines
1.7 KiB
C
94 lines
1.7 KiB
C
/** @file
|
|
* @brief Pipe UART driver
|
|
*
|
|
* A pipe UART driver allowing application to handle all aspects of received
|
|
* protocol data.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2015 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <kernel.h>
|
|
|
|
#include <board.h>
|
|
#include <uart.h>
|
|
|
|
#include <console/uart_pipe.h>
|
|
#include <misc/printk.h>
|
|
|
|
static struct device *uart_pipe_dev;
|
|
|
|
static uint8_t *recv_buf;
|
|
static size_t recv_buf_len;
|
|
static uart_pipe_recv_cb app_cb;
|
|
static size_t recv_off;
|
|
|
|
static void uart_pipe_isr(struct device *unused)
|
|
{
|
|
ARG_UNUSED(unused);
|
|
|
|
while (uart_irq_update(uart_pipe_dev)
|
|
&& uart_irq_is_pending(uart_pipe_dev)) {
|
|
int rx;
|
|
|
|
if (!uart_irq_rx_ready(uart_pipe_dev)) {
|
|
continue;
|
|
}
|
|
|
|
rx = uart_fifo_read(uart_pipe_dev, recv_buf + recv_off,
|
|
recv_buf_len - recv_off);
|
|
if (!rx) {
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Call application callback with received data. Application
|
|
* may provide new buffer or alter data offset.
|
|
*/
|
|
recv_off += rx;
|
|
recv_buf = app_cb(recv_buf, &recv_off);
|
|
}
|
|
}
|
|
|
|
int uart_pipe_send(const uint8_t *data, int len)
|
|
{
|
|
while (len--) {
|
|
uart_poll_out(uart_pipe_dev, *data++);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void uart_pipe_setup(struct device *uart)
|
|
{
|
|
uint8_t c;
|
|
|
|
uart_irq_rx_disable(uart);
|
|
uart_irq_tx_disable(uart);
|
|
|
|
/* Drain the fifo */
|
|
while (uart_fifo_read(uart, &c, 1)) {
|
|
continue;
|
|
}
|
|
|
|
uart_irq_callback_set(uart, uart_pipe_isr);
|
|
|
|
uart_irq_rx_enable(uart);
|
|
}
|
|
|
|
void uart_pipe_register(uint8_t *buf, size_t len, uart_pipe_recv_cb cb)
|
|
{
|
|
recv_buf = buf;
|
|
recv_buf_len = len;
|
|
app_cb = cb;
|
|
|
|
uart_pipe_dev = device_get_binding(CONFIG_UART_PIPE_ON_DEV_NAME);
|
|
|
|
if (uart_pipe_dev != NULL) {
|
|
uart_pipe_setup(uart_pipe_dev);
|
|
}
|
|
}
|