Add basic LCD support
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@1517 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
parent
73c8696448
commit
48af682013
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@ -1,7 +1,7 @@
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/****************************************************************************
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* arch/sh/src/common/up_internal.h
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*
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* Copyright (C) 2008 Gregory Nutt. All rights reserved.
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* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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@ -190,6 +190,16 @@ extern void up_ledoff(int led);
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# define up_ledoff(led)
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#endif
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/* Defined in board/up_lcd.c */
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#ifdef CONFIG_ARCH_LCD
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extern void up_lcdinit(void);
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extern void up_lcdputc(char ch);
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#else
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# define up_lcdinit()
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# define up_lcdputc(ch)
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#endif
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/* Defined in board/up_network.c */
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#ifdef CONFIG_NET
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@ -49,12 +49,6 @@
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#include "up_internal.h"
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#include "m16c_uart.h"
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/* Is there any serial support? This might be the case if the board does
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* not have serial ports but supports stdout through, say, an LCD.
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*/
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#if !defined(CONFIG_UART0_DISABLE) && !defined(CONFIG_UART1_DISABLE) && !defined(CONFIG_UART2_DISABLE)
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/**************************************************************************
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* Private Definitions
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**************************************************************************/
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@ -65,26 +59,40 @@
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# define M16C_XIN_PRESCALER 1
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#endif
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/* We know that we have a serial port enabled. Is one of them a serial console? */
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/* Is there any serial support? This might be the case if the board does
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* not have serial ports but supports stdout through, say, an LCD.
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*/
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#if defined(CONFIG_UART0_DISABLE) || defined(CONFIG_UART1_DISABLE) || defined(CONFIG_UART2_DISABLE)
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# define HAVE_SERIAL
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#else
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# undef HAVE_SERIAL
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#endif
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/* Is one of the serial ports a console? */
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#if defined(CONFIG_UART0_SERIAL_CONSOLE) && !defined(CONFIG_UART0_DISABLE)
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# define HAVE_CONSOLE 1
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# define HAVE_SERIALCONSOLE 1
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef CONFIG_UART2_SERIAL_CONSOLE
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#elif defined(CONFIG_UART1_SERIAL_CONSOLE) && !defined(CONFIG_UART1_DISABLE)
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# define HAVE_CONSOLE 1
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# define HAVE_SERIALCONSOLE 1
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART2_SERIAL_CONSOLE
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#elif defined(CONFIG_UART2_SERIAL_CONSOLE) && !defined(CONFIG_UART2_DISABLE)
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# define HAVE_CONSOLE 1
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# define HAVE_SERIALCONSOLE 1
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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#else
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# undef HAVE_CONSOLE
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# if defined(CONFIG_UART0_SERIAL_CONSOLE) || defined(CONFIG_UART1_SERIAL_CONSOLE)|| defined(CONFIG_UART2_SERIAL_CONSOLE)
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# error "A serial console selected, but corresponding UART not enabled"
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# endif
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# undef HAVE_SERIALCONSOLE
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#endif
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/* Select UART parameters for the selected console */
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#ifdef HAVE_SERIALCONSOLE
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#if defined(CONFIG_UART0_SERIAL_CONSOLE)
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# define M16C_UART_BASE M16C_UART0_BASE
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# define M16C_UART_BAUD CONFIG_UART0_BAUD
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@ -155,6 +163,8 @@
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#define M16C_UART_BRG_VALUE \
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((M16C_XIN_FREQ / (16 * M16C_XIN_PRESCALER * M16C_UART_BAUD)) - 1)
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#endif /* HAVE_SERIALCONSOLE */
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/**************************************************************************
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* Private Types
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**************************************************************************/
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@ -183,42 +193,17 @@
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*
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**************************************************************************/
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#ifdef HAVE_CONSOLE
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#ifdef HAVE_SERIALCONSOLE
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static inline int up_txready(void)
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{
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/* Check the TI bit in the CI register. 1=Transmit buffer empty */
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return ((getreg8(M16C_UART_BASE + M16C_UART_C1) & UART_C1_TI) != 0);
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}
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#endif
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#endif /* HAVE_SERIALCONSOLE */
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/**************************************************************************
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* Public Functions
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**************************************************************************/
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/**************************************************************************
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* Name: up_lowputc
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*
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* Description:
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* Output one byte on the serial console
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*
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**************************************************************************/
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void up_lowputc(char ch)
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{
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#ifdef HAVE_CONSOLE
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/* Wait until the transmit buffer is empty */
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while (!up_txready());
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/* Write the data to the transmit buffer */
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putreg16((uint16)ch, M16C_UART_BASE + M16C_UART_TB);
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#endif
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}
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/**************************************************************************
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* Name: up_lowsetup
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* Name: up_lowserialsetup
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*
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* Description:
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* This performs basic initialization of the UART used for the serial
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@ -227,9 +212,9 @@ void up_lowputc(char ch)
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*
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**************************************************************************/
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void up_lowsetup(void)
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#if defined(HAVE_SERIALCONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG)
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static inline void up_lowserialsetup(void)
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{
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#if defined(HAVE_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG)
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ubyte regval;
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/* Set the baud rate generator */
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@ -292,10 +277,61 @@ void up_lowsetup(void)
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/* Read any data left in the RX fifo */
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regval = (ubyte)getreg16(M16C_UART_BASE + M16C_UART_RB);
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}
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#endif /* HAVE_SERIALCONFIG && !CONFIG_SUPPRESS_UART_CONFIG */
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/**************************************************************************
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* Public Functions
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**************************************************************************/
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/**************************************************************************
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* Name: up_lowputc
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*
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* Description:
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* Output one byte on the serial console.
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*
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**************************************************************************/
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#ifdef HAVE_SERIAL /* Assume needed if we have serial. See for e.g., up_lcd.c */
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void up_lowputc(char ch)
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{
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#ifdef HAVE_SERIALCONSOLE
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/* Wait until the transmit buffer is empty */
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while (!up_txready());
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/* Write the data to the transmit buffer */
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putreg16((uint16)ch, M16C_UART_BASE + M16C_UART_TB);
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#endif
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}
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#endif
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#elif defined(CONFIG_UART0_SERIAL_CONSOLE) || defined(CONFIG_UART1_SERIAL_CONSOLE)|| defined(CONFIG_UART2_SERIAL_CONSOLE)
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# error "A serial console selected, but corresponding UART not enabled"
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#endif /* !CONFIG_UART0_DISABLE && !CONFIG_UART1_DISABLE && !CONFIG_UART2_DISABLE */
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/**************************************************************************
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* Name: up_lowsetup
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*
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* Description:
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* This performs basic initialization of the UART used for the serial
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* console. Its purpose is to get the console output availabe as soon
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* as possible.
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*
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**************************************************************************/
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void up_lowsetup(void)
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{
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/* Here we initialize the serial console early so that it can be used
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* for bring-up debugging.
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*/
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#if defined(HAVE_SERIALCONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG)
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up_lowserialsetup()
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#endif
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/* The LCD is initialized here to because it may be that the LCD is
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* used for console output.
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*/
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#ifdef CONFIG_ARCH_LCD
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up_lcdinit();
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#endif
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}
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@ -59,7 +59,9 @@
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# stack in bytes. If not defined, the user task stacks will be
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# used during interrupt handling.
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# CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
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#
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# CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to skp16c26.
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# CONFIG_ARCH_LCD - Configure LCD. Unique to skp16c26.
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CONFIG_ARCH=sh
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CONFIG_ARCH_SH=y
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CONFIG_ARCH_CHIP=m16c
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@ -74,6 +76,8 @@ CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
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CONFIG_BOARD_LOOPSPERMSEC=16945
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CONFIG_ARCH_INTERRUPTSTACK=128
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_ARCH_LEDS=n
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CONFIG_ARCH_LCD=y
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#
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# M16C specific device driver settings
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@ -39,7 +39,7 @@ CFLAGS += -I$(TOPDIR)/sched
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ASRCS =
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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CSRCS = up_leds.c up_buttons.c up_lcdconsole.c
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CSRCS = up_leds.c up_buttons.c up_lcd.c up_lcdconsole.c
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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@ -0,0 +1,226 @@
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/************************************************************************************
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* configs/scp16c26/src/up_lcd.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include "up_arch.h"
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#include "up_internal.h"
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#include "chip.h"
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#ifdef CONFIG_ARCH_LCD
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* LCD commands *********************************************************************/
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#define LCD_CLEAR 0x01 /* Clear LCD display and home cursor */
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#define LCD_HOME_L1 0x80 /* move cursor to line 1 */
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#define LCD_HOME_L2 0xc0 /* move cursor to line 2 */
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#define CURSOR_MODE_DEC 0x04 /* Cursor auto decrement after R/W */
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#define CURSOR_MODE_INC 0x06 /* Cursor auto increment after R/W */
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#define FUNCTION_SET 0x28 /* Setup, 4 bits,2 lines, 5X7 */
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#define LCD_CURSOR_ON 0x0e /* Display ON with Cursor */
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#define LCD_CURSOR_OFF 0x0c /* Display ON with Cursor off */
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#define LCD_CURSOR_BLINK 0x0d /* Display on with blinking cursor */
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#define LCD_CURSOR_LEFT 0x10 /* Move Cursor Left One Position */
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#define LCD_CURSOR_RIGHT 0x14 /* Move Cursor Right One Position */
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/************************************************************************************
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* Private Data
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************************************************************************************/
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/************************************************************************************
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* Private Functions
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************************************************************************************/
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/************************************************************************************
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* Name: up_lcddelay
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************************************************************************************/
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static void up_lcddelay(uint16 count)
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{
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uint32 counter = (uint16)count << 8;
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while(counter--)
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{
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asm("\tnop\n\tnop\n\tnop\n" : :); /* 3 NOPs */
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}
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}
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/************************************************************************************
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* Name: up_setrs
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************************************************************************************/
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static inline void up_setrs(boolean data)
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{
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/* Set/clear bit 1 of port 6 */
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register ubyte regval = getreg8(M16C_P6);
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if (data)
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{
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regval |= (1 << 0); /* High = data */
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}
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else
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{
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regval &= ~(1 << 0); /* Low = control */
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}
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putreg8(regval, M16C_P6);
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}
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/************************************************************************************
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* Name: up_seten
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************************************************************************************/
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static inline void up_seten(void)
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{
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/* Set bit 1 of port 6 */
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register ubyte regval = getreg8(M16C_P6);
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regval = (1 << 1);
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putreg8(regval, M16C_P6);
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}
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/************************************************************************************
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* Name: up_clren
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************************************************************************************/
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static inline void up_clren(void)
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{
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/* Clear bit 1 of port 6 */
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register ubyte regval = getreg8(M16C_P6);
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regval &= ~(1 << 1);
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putreg8(regval, M16C_P6);
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}
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/************************************************************************************
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* Name: up_enpluse
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************************************************************************************/
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static inline void up_enpulse(boolean data)
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{
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up_seten(); /* EN enable chip (HIGH) */
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up_lcddelay(0); /* Short delay */
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up_clren(); /* Latch data by setting EN low */
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up_lcddelay(0); /* Short delay for data writes */
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if (!data) up_lcddelay(0); /* Longer delay for control writes */
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}
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/************************************************************************************
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* Name: up_lcdwrite
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************************************************************************************/
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void up_lcdwrite(boolean data, ubyte ch)
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{
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up_setrs(data); /* Set RS appropriately */
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/* Write upper nibble first. Only the lower 4 bits of P9 are valid. The upper four
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* bits are reserved and must be zero.
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*/
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putreg8(ch >> 4, M16C_P9);
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up_enpulse(data);
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/* Write lower nibble second */
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putreg8(ch & 0x0f, M16C_P9);
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up_enpulse(data);
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}
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: up_lcdinit
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************************************************************************************/
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void up_lcdinit(void)
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{
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ubyte regval;
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/* Enable writing to PD9 by selecting bit 2 in the protection register */
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regval = getreg8(M16C_PRCR);
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regval |= (1 << 2);
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putreg8(regval, M16C_PRCR);
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/* We can't read PD9, so we can't OR the values in */
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putreg8(0x0f, M16C_PD9);
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/* Set EN (port 6 bit 1) and Set RS (port 6 bit 0) as outputs */
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regval = getreg8(M16C_P6);
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regval |= (1 << 1) | (1 << 0);
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putreg8(regval, M16C_P6);
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regval = getreg8(M16C_PD6);
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regval |= (1 << 1) | (1 << 0);
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putreg8(regval, M16C_PD6);
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/* Set EN low */
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up_clren();
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/* Write the reset sequence */
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up_lcdwrite(FALSE, 0x33);
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up_lcddelay(20);
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up_lcdwrite(FALSE, 0x32);
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up_lcddelay(20);
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up_lcdwrite(FALSE, FUNCTION_SET); /* reset sequence */
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up_lcdwrite(FALSE, FUNCTION_SET);
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up_lcdwrite(FALSE, LCD_CURSOR_OFF);
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up_lcdwrite(FALSE, LCD_CLEAR);
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up_lcdwrite(FALSE, LCD_HOME_L1);
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}
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/************************************************************************************
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* Name: up_lcdputc
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************************************************************************************/
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void up_lcdputc(char ch)
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{
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up_lcdwrite(TRUE, ch);
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}
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#endif /* CONFIG_ARCH_LCD */
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@ -56,7 +56,7 @@
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# undef HAVE_SERIALCONSOLE
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#endif
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#ifndef HAVE_SERIALCONSOLE
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#if !defined(HAVE_SERIALCONSOLE) && defined(CONFIG_ARCH_LCD)
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/************************************************************************************
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* Definitions
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@ -71,23 +71,9 @@
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************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Funtions
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: up_lowsetup
|
||||
*
|
||||
* Description:
|
||||
* This performs basic initialization of the hardware used for the console.
|
||||
* Its purpose is to get the console output availabe as soon as possible.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
void up_lowsetup(void)
|
||||
{
|
||||
# warning "To be provided"
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: up_earlyconsoleinit
|
||||
*
|
||||
|
|
@ -98,10 +84,11 @@ void up_lowsetup(void)
|
|||
*
|
||||
************************************************************************************/
|
||||
|
||||
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DEV_LOWCONSOLE)
|
||||
#ifdef CONFIG_USE_EARLYSERIALINIT
|
||||
# warning "You probably need to define CONFIG_ARCH_LOWCONSOLE"
|
||||
void up_earlyconsoleinit(void)
|
||||
{
|
||||
/* In this context, up_earlyconsoleinit does not need to do anything. */
|
||||
/* There is probably a problem if we are here */
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
@ -114,10 +101,13 @@ void up_earlyconsoleinit(void)
|
|||
*
|
||||
************************************************************************************/
|
||||
|
||||
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DEV_LOWCONSOLE)
|
||||
#if CONFIG_USE_SERIALDRIVER
|
||||
# warning "You probably need to define CONFIG_ARCH_LOWCONSOLE"
|
||||
void up_consoleinit(void)
|
||||
{
|
||||
/* In this context, up_earlyconsoleinit does not need to do anything. */
|
||||
/* There is probably a problem if we are here */
|
||||
|
||||
lowconsole_init();
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
@ -131,7 +121,7 @@ void up_consoleinit(void)
|
|||
|
||||
void up_lowputc(char ch)
|
||||
{
|
||||
# warning "To be provided"
|
||||
up_lcdputc(ch);
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
|
|
@ -144,10 +134,8 @@ void up_lowputc(char ch)
|
|||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
/* Same as up_lowputc in this context */
|
||||
|
||||
up_lowputc(ch);
|
||||
up_lcdputc(ch);
|
||||
return ch;
|
||||
}
|
||||
|
||||
#endif /* HAVE_SERIALCONSOLE */
|
||||
#endif /* !HAVE_SERIALCONSOLE && CONFIG_ARCH_LCD */
|
||||
|
|
|
|||
|
|
@ -54,7 +54,7 @@
|
|||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Funtions
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
|
|
|
|||
Loading…
Reference in New Issue