Imagelibrary/rtems
1
0
Fork 1
mirror of https://gitlab.rtems.org/rtems/rtos/rtems.git synced 2025-12-26 14:18:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

grlib: Add apbuart_outbyte_wait()

Browse Source
This commit is contained in:
Sebastian Huber
2021-06-10 15:01:49 +02:00
parent 85febe7b10
commit af69a8693b
6 changed files with 24 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
bsps/include/grlib/apbuart.h
View File

@@ -62,11 +62,9 @@ extern "C" {
#define APBUART_STATUS_TF 0x200
#define APBUART_STATUS_RF 0x400
void apbuart_outbyte_polled(
struct apbuart_regs *regs,
unsigned char ch,
int wait_sent
);
void apbuart_outbyte_wait(const struct apbuart_regs *regs);
void apbuart_outbyte_polled(struct apbuart_regs *regs, unsigned char ch);
int apbuart_inbyte_nonblocking(struct apbuart_regs *regs);

3
bsps/riscv/griscv/console/printk_support.c
View File

@@ -100,7 +100,8 @@ static void bsp_out_char(char c)
*/
}
apbuart_outbyte_polled(grlib_debug_uart, c, 1);
apbuart_outbyte_polled(grlib_debug_uart, c);
apbuart_outbyte_wait(grlib_debug_uart);
}
/*

2
bsps/shared/grlib/uart/apbuart_cons.c
View File

@@ -641,7 +641,7 @@ static void write_polled(
int nwrite = 0;
while (nwrite < len) {
apbuart_outbyte_polled(uart->regs, *buf++, 0);
apbuart_outbyte_polled(uart->regs, *buf++);
nwrite++;
}
}

30
bsps/shared/grlib/uart/apbuart_polled.c
View File

@@ -9,27 +9,27 @@
#include <grlib/apbuart.h>
void apbuart_outbyte_polled(
struct apbuart_regs *regs,
unsigned char ch,
int wait_sent
)
#include <rtems/score/cpuimpl.h>
void apbuart_outbyte_wait(const struct apbuart_regs *regs)
{
while ( (regs->status & APBUART_STATUS_TE) == 0 ) {
/* Lower bus utilization while waiting for UART */
__asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
__asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
__asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
__asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
_CPU_Instruction_no_operation();
_CPU_Instruction_no_operation();
_CPU_Instruction_no_operation();
_CPU_Instruction_no_operation();
_CPU_Instruction_no_operation();
_CPU_Instruction_no_operation();
_CPU_Instruction_no_operation();
_CPU_Instruction_no_operation();
}
}
void apbuart_outbyte_polled(struct apbuart_regs *regs, char ch)
{
apbuart_outbyte_wait(regs);
regs->data = (unsigned int) ch;
/* Wait until the character has been sent? */
if (wait_sent) {
while ((regs->status & APBUART_STATUS_TE) == 0)
;
}
}
int apbuart_inbyte_nonblocking(struct apbuart_regs *regs)

2
bsps/shared/grlib/uart/apbuart_termios.c
View File

@@ -78,7 +78,7 @@ static void apbuart_write_polled(
size_t nwrite = 0;
while (nwrite < len) {
apbuart_outbyte_polled(uart->regs, *buf++, 0);
apbuart_outbyte_polled(uart->regs, *buf++);
nwrite++;
}
}

3
bsps/sparc/leon3/console/printk_support.c
View File

@@ -34,7 +34,8 @@ static void bsp_debug_uart_discard(char c)
static void bsp_debug_uart_output_char(char c)
{
apbuart_outbyte_polled(leon3_debug_uart, c, 1);
apbuart_outbyte_polled(leon3_debug_uart, c);
apbuart_outbyte_wait(leon3_debug_uart);
}
static int bsp_debug_uart_poll_char(void)