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dm36x: UART convert \n to \r\n

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This commit is contained in:
Kelvin Lawson
2013-09-17 22:13:27 +01:00
parent d9b901c2b4
commit ecffe72257
1 changed files with 31 additions and 9 deletions
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40
ports/arm/platforms/dm36x/uart.c
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@@ -47,7 +47,7 @@
/* Constants */
/** Select relevant UART for this platform */
#define UART_BASE DM36X_UART1_BASE
#define UART_BASE DM36X_UART0_BASE
/** FR Register bits */
#define UART_FR_RXFE 0x10
@@ -73,6 +73,7 @@ static int initialised = FALSE;
/* Forward declarations */
static int uart_init (void);
static void uart_write_char (const char c);
/**
@@ -208,12 +209,12 @@ int uart_write (const char *ptr, int len)
/* Loop through all bytes to write */
for (todo = 0; todo < len; todo++)
{
/* Wait for empty */
while(UART_LSR(UART_BASE) & UART_LSR_TEMT)
;
/* Convert \n to \r\n */
if (*ptr == '\n')
uart_write_char('\r');
/* Write byte to UART */
UART_DR(UART_BASE) = *ptr++;
uart_write_char(*ptr++);
}
/* Return mutex access */
@@ -248,12 +249,12 @@ void uart_write_halt (const char *ptr)
/* Loop through all bytes until NULL terminator encountered */
while (*ptr != '\0')
{
/* Wait for empty */
while(UART_LSR(UART_BASE) & UART_LSR_TEMT)
;
/* Convert \n to \r\n */
if (*ptr == '\n')
uart_write_char('\r');
/* Write byte to UART */
UART_DR(UART_BASE) = *ptr++;
uart_write_char(*ptr++);
}
}
@@ -262,3 +263,24 @@ void uart_write_halt (const char *ptr)
;
}
/**
* \b uart_putchar
*
* Simple polled UART write char.
*
* Assumes that the mutex has already been taken, or
* is not expected to be taken (e.g. on interrupt).
*
* @param[in] c Char to write
*/
static void uart_write_char (const char c)
{
/* Wait for empty */
while(UART_LSR(UART_BASE) & UART_LSR_TEMT)
;
/* Write byte to UART */
UART_DR(UART_BASE) = c;
}