RTEMS on QEMU with virtual serial device

[Sebastian Huber]

On 01/10/14 14:35, Мороз Олег wrote:
>
> I've solved my problem using code changes
>
> diff --git a/c/src/lib/libbsp/i386/shared/comm/uart.c
> b/c/src/lib/libbsp/i386/shared/comm/uart.c
>
> index 3c4d42a..3552fe6 100644
>
> --- a/c/src/lib/libbsp/i386/shared/comm/uart.c
>
> +++ b/c/src/lib/libbsp/i386/shared/comm/uart.c
>
> @@ -568,12 +568,13 @@ BSP_uart_termios_read_com2(int uart)
>
> ssize_t
>
> BSP_uart_termios_write_com1(int minor, const char *buf, size_t len)
>
> {
>
> + if(len <= 0)
>
> + {
>
> + return 0;
>
> + }
>
> assert(buf != NULL);
>
> - if(len <= 0)
>
> - {
>
> - return 0;
>
> - }
>
> +
>
> /* If there TX buffer is busy - something is royally screwed up */
>
> assert((uread(BSP_UART_COM1, LSR) & THRE) != 0);
>
> @@ -602,13 +603,13 @@ BSP_uart_termios_write_com1(int minor, const char *buf,
> size_t len)
>
> ssize_t
>
> BSP_uart_termios_write_com2(int minor, const char *buf, size_t len)
>
> {
>
> - assert(buf != NULL);
>
> +
>
> if(len <= 0)
>
> {
>
> return 0;
>
> }
>
> -
>
> + assert(buf != NULL);
>
> /* If there TX buffer is busy - something is royally screwed up */
>
> assert((uread(BSP_UART_COM2, LSR) & THRE) != 0);
>
>
>
>
> Is it alright?

Yes, this looks all right, can you please send a complete patch.

-- 
Sebastian Huber, embedded brains GmbH

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