51 lines
938 B
C
51 lines
938 B
C
/*
|
|
* Copyright (c) 2020 Intel Corporation.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <kernel.h>
|
|
#include <drivers/uart.h>
|
|
#include <sys/__assert.h>
|
|
|
|
static const struct device *uart_dev;
|
|
|
|
int z_gdb_backend_init(void)
|
|
{
|
|
int ret = 0;
|
|
static const struct uart_config uart_cfg = {
|
|
.baudrate = 115200,
|
|
.parity = UART_CFG_PARITY_NONE,
|
|
.stop_bits = UART_CFG_STOP_BITS_1,
|
|
.data_bits = UART_CFG_DATA_BITS_8,
|
|
.flow_ctrl = UART_CFG_FLOW_CTRL_NONE
|
|
};
|
|
|
|
if (uart_dev == NULL) {
|
|
uart_dev = device_get_binding(
|
|
CONFIG_GDBSTUB_SERIAL_BACKEND_NAME);
|
|
|
|
__ASSERT(uart_dev != NULL, "Could not get uart device");
|
|
|
|
ret = uart_configure(uart_dev, &uart_cfg);
|
|
__ASSERT(ret == 0, "Could not configure uart device");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void z_gdb_putchar(unsigned char ch)
|
|
{
|
|
uart_poll_out(uart_dev, ch);
|
|
}
|
|
|
|
unsigned char z_gdb_getchar(void)
|
|
{
|
|
unsigned char ch;
|
|
|
|
while (uart_poll_in(uart_dev, &ch) < 0) {
|
|
}
|
|
|
|
return ch;
|
|
}
|