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incubator-nuttx
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arch/sim: add sim uart_ram support 

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This commit is contained in:
yinshengkai 2023-08-21 11:33:01 +08:00 committed by Xiang Xiao
parent d827ee5ffc
commit 4f25c287d2
2 changed files with 90 additions and 0 deletions
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49
arch/sim/Kconfig
View File

@ -625,6 +625,55 @@ config SIM_UART3_NAME
A UART port must also exist on the host system
with the exact same name specified here.
config SIM_RAM_UART
bool "SIM RAM UART Device"
depends on RAM_UART
default n
---help---
SIM RAM UART. It emulates a UART device but using a RAM memory
instead a physical peripheral.
if SIM_RAM_UART
config SIM_RAM_UART0
bool "SIM RAM UART Device 0"
default n
---help---
sim ram uart device 0
config SIM_RAM_UART0_SLAVE
bool "SIM_RAM_UART0 is slave"
depends on SIM_RAM_UART0
default n
---help---
The sim ram uart0 is slave
config SIM_RAM_UART1
bool "SIM RAM UART Device 1"
default n
---help---
sim ram uart device 1
config SIM_RAM_UART1_SLAVE
bool "SIM_RAM_UART1 is slave"
depends on SIM_RAM_UART1
default n
---help---
The sim ram uart1 is slave
config SIM_RAM_UART2
bool "SIM RAM UART Device 2"
default n
---help---
sim ram uart device 2
config SIM_RAM_UART2_SLAVE
bool "SIM_RAM_UART2 is slave"
depends on SIM_RAM_UART2
default n
---help---
The sim ram uart2 is slave
endif
endmenu
config SIM_USB_DEV

41
arch/sim/src/sim/sim_uart.c
View File

@ -25,7 +25,9 @@
#include <nuttx/config.h>
#include <nuttx/serial/serial.h>
#include <nuttx/fs/ioctl.h>
#include <nuttx/serial/uart_ram.h>
#include <nuttx/wqueue.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
@ -666,6 +668,21 @@ static bool tty_txempty(struct uart_dev_s *dev)
}
#endif
#ifdef CONFIG_SIM_RAM_UART
static int sim_uartram_register(FAR const char *devname, bool slave)
{
char name[NAME_MAX];
FAR struct uart_rambuf_s *shmem;
strlcpy(name, strrchr(devname, '/') + 1, NAME_MAX);
shmem = host_allocshmem(name, sizeof(struct uart_rambuf_s) * 2, !slave);
DEBUGASSERT(shmem);
memset(shmem, 0, sizeof(struct uart_rambuf_s) * 2);
return uart_ram_register(devname, shmem, slave);
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
@ -676,6 +693,30 @@ static bool tty_txempty(struct uart_dev_s *dev)
void sim_uartinit(void)
{
#ifdef CONFIG_SIM_RAM_UART0
# ifdef CONFIG_SIM_RAM_UART0_SLAVE
sim_uartram_register("/dev/ttyVS0", true);
# else
sim_uartram_register("/dev/ttyVS0", false);
# endif
#endif
#ifdef CONFIG_SIM_RAM_UART1
# ifdef CONFIG_SIM_RAM_UART1_SLAVE
sim_uartram_register("/dev/ttyVS1", true);
# else
sim_uartram_register("/dev/ttyVS1", false);
# endif
#endif
#ifdef CONFIG_SIM_RAM_UART2
# ifdef CONFIG_SIM_RAM_UART2_SLAVE
sim_uartram_register("/dev/ttyVS2", true);
# else
sim_uartram_register("/dev/ttyVS2", false);
# endif
#endif
#ifdef USE_DEVCONSOLE
/* Start the simulated UART device */