diff options
Diffstat (limited to 'nuttx/arch/z80/src/z180/z180_lowscc.c')
| -rw-r--r-- | nuttx/arch/z80/src/z180/z180_lowscc.c | 61 |
1 files changed, 47 insertions, 14 deletions
diff --git a/nuttx/arch/z80/src/z180/z180_lowscc.c b/nuttx/arch/z80/src/z180/z180_lowscc.c index b44414d55..e5d5171c1 100644 --- a/nuttx/arch/z80/src/z180/z180_lowscc.c +++ b/nuttx/arch/z80/src/z180/z180_lowscc.c @@ -1,5 +1,5 @@ /**************************************************************************** - * arch/z80/src/z180/z180_loweruart.c + * arch/z80/src/z180/z180_lowscc.c * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> @@ -48,9 +48,9 @@ #include "chip/chip.h" #include "common/up_internal.h" -#include "z80_config.h" +#include "z180_config.h" -#ifdef USE_LOWUARTINIT +#if defined(USE_LOWSERIALINIT) && defined(HAVE_SCC) /**************************************************************************** * Private Definitions @@ -66,7 +66,7 @@ # define CONSOLE_2STOP CONFIG_Z180_SCC_2STOP # define CONSOLE_PARITY CONFIG_Z180_SCC_PARITY -#elif defined(CONFIG_Z180_ESCCB_SERIAL_CONSOLE) +#elif defined(CONFIG_Z180_ESCCA_SERIAL_CONSOLE) # define CONSOLE_CR Z182_ESCCA_CR # define CONSOLE_DR Z182_ESCCA_DR # define CONSOLE_BAUD CONFIG_Z180_ESCCA_BAUD @@ -90,24 +90,34 @@ * Private Functions ****************************************************************************/ -#if defined(HAVE_SERIAL_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG) -static void z180_setbaud(void) +/**************************************************************************** + * Name: z180_scc_setbaud + * + * Description: + * + ****************************************************************************/ + +#if defined(HAVE_SCC_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG) +static void z180_scc_setbaud(void) { #warning "Missing logic" } -#endif /* HAVE_SERIAL_CONSOLE && !CONFIG_SUPPRESS_UART_CONFIG */ +#endif /* HAVE_SCC_CONSOLE && !CONFIG_SUPPRESS_UART_CONFIG */ /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** - * Name: up_lowuartinit + * Name: z180_scc_lowinit + * + * Description: + * Called early in the boot sequence to initialize the [E]SCC channel(s) + * ****************************************************************************/ -void up_lowuartinit(void) +void z180_scc_lowinit(void) { -#ifdef HAVE_SERIAL #warning "Missing logic" /* Configure for usage of {E]SCC channels (whether or not we have a console) */ @@ -126,10 +136,33 @@ void up_lowuartinit(void) /* Configure the console for immediate usage */ -#if defined(HAVE_SERIAL_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG) +#if defined(HAVE_SCC_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG) #warning "Missing logic" -#endif /* HAVE_SERIAL_CONSOLE && !CONFIG_SUPPRESS_UART_CONFIG */ -#endif /* HAVE_SERIAL */ +#endif /* HAVE_SCC_CONSOLE && !CONFIG_SUPPRESS_UART_CONFIG */ } -#endif /* USE_LOWUARTINIT */ +/**************************************************************************** + * Name: z180_putc + * + * Description: + * Low-level character output + * + ****************************************************************************/ + +#ifdef HAVE_SCC_CONSOLE +void z180_putc(uint8_t ch) __naked +{ + __asm +txbe: + in0 a,(CONSOLE_CR) ; Read RR0 + bit 2, a ; Bit 2, Tx buffer empty? + jr z, txbe ; No, wait until the Tx buffer is empty + + ld a, 4(ix) ; Character to output + out (CONSOLE_DR), a ; Send it + ret + __endasm; +} +#endif + +#endif /* USE_LOWSERIALINIT && HAVE_SCC*/ |