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serial: Enable USB serial mode

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This commit is contained in:
Sean Cross 2014-09-09 14:02:17 +08:00
parent 52c7aa83b8
commit 6a4fe44cd5
1 changed files with 48 additions and 0 deletions
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48
serial.c
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@ -1,6 +1,10 @@
#include <stdint.h>
#include "serial.h"
#define PUTS_HANDLE_NEWLINE
#define SERIAL_USB
#ifdef SERIAL_UART
#define UART_IS_DLL 0x100
#define UART_IS_LCR 0x200
@ -141,3 +145,47 @@ void serial_init(void)
/* Pause a while */
for (tmp=0; tmp<0xff; tmp++);
}
#else /* SERIAL_USB */
static void (*rom_usb_read)(void *data, int bytes, int timeout) = (void *)0xfff03639;
static void (*rom_usb_write)(const void *data, int bytes, int timeout) = (void *)0xfff03653;
static void (*rom_usb_flush)(void) = (void *)0xfff04845;
int serial_putc(uint8_t c)
{
if (c == '\n')
serial_putc('\r');
rom_usb_write(&c, 1, -1);
rom_usb_flush();
return 0;
}
uint8_t serial_getc(void)
{
uint8_t bfr;
rom_usb_read(&bfr, 1, -1);
return bfr;
}
int serial_puts(const void *s)
{
#ifdef PUTS_HANDLE_NEWLINE
const char *str = s;
while(*str) {
if (*str == '\n')
serial_putc('\r');
serial_putc(*str++);
}
#else
uint32_t len = _strlen(s);
rom_usb_write(s, len, -1);
rom_usb_flush();
#endif
return 0;
}
void serial_init(void)
{
}
#endif /* UART */