sdk-hwV1.3/lichee/melis-v3.0/source/ekernel/arch/riscv/csp/csp_uart.c

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2024-05-07 10:09:20 +00:00
/*
* Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved.
*
* Allwinner is a trademark of Allwinner Technology Co.,Ltd., registered in
* the the People's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
*
* DISCLAIMER
* THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT.
* IF YOU NEED TO INTEGRATE THIRD PARTYS TECHNOLOGY (SONY, DTS, DOLBY, AVS OR MPEGLA, ETC.)
* IN ALLWINNERSSDK OR PRODUCTS, YOU SHALL BE SOLELY RESPONSIBLE TO OBTAIN
* ALL APPROPRIATELY REQUIRED THIRD PARTY LICENCES.
* ALLWINNER SHALL HAVE NO WARRANTY, INDEMNITY OR OTHER OBLIGATIONS WITH RESPECT TO MATTERS
* COVERED UNDER ANY REQUIRED THIRD PARTY LICENSE.
* YOU ARE SOLELY RESPONSIBLE FOR YOUR USAGE OF THIRD PARTYS TECHNOLOGY.
*
*
* THIS SOFTWARE IS PROVIDED BY ALLWINNER"AS IS" AND TO THE MAXIMUM EXTENT
* PERMITTED BY LAW, ALLWINNER EXPRESSLY DISCLAIMS ALL WARRANTIES OF ANY KIND,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION REGARDING
* THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE
* OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* IN NO EVENT SHALL ALLWINNER 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.
*/
#include <sbi.h>
void sbi_putc(void *port, int c)
{
sbi_console_putchar(c);
}
int uart_put_buffer(const char *buf, int count)
{
int i;
for (i = 0; i < count; i++)
{
sbi_console_putchar(buf[i]);
}
return i;
}
int uart_get_buffer(char *buf, int count)
{
int i, c;
void delay_10insn(void);
for (i = 0; i < count; i++)
{
retry:
c = sbi_console_getchar();
if (c < 0)
{
delay_10insn();
delay_10insn();
delay_10insn();
goto retry;
}
buf[i] = c;
}
return i;
}