Beginning of support for LCD1602
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5545 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
2153fc40b5
commit
504dde5934
@ -3996,3 +3996,8 @@
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* net/recvfrom(): Fix a introduced with the last bugfix. If
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the peer does an orderly closure of the socket, report 0 not
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-ENOTCONN
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* configs/lm3s6965-ek/README.txt and tools/: Add an OpenOCD
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configuration for the LM3S (from Jose Pablo Carballo).
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* nuttx/lcd/hd4478ou.h and configs/pcblogic-pic32mx/src/up_lcd1602:
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Start of support of LCD1602 alphanumeric LCD. I need a few
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more parts before I can finish integrating this one.
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@ -157,7 +157,8 @@
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# define PMP_MODE_MODE_SLAVE (1 << PMP_MODE_MODE_SHIFT) /* Enhanced slave mode */
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# define PMP_MODE_MODE_MODE2 (2 << PMP_MODE_MODE_SHIFT) /* Master mode 2 */
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# define PMP_MODE_MODE_MODE1 (3 << PMP_MODE_MODE_SHIFT) /* Master mode 1 */
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#define PMP_MODE_MODE16 (1 << 10) /* Bit 10: 8/16-bit mode */
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#define PMP_MODE_MODE16 (1 << 10) /* Bit 10: 1=16-bit mode */
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#define PMP_MODE_MODE8 (0) /* 0=8-bit mode */
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#define PMP_MODE_INCM_SHIFT (11) /* Bits 11-12: Increment Mode */
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#define PMP_MODE_INCM_MASK (3 << PMP_MODE_INCM_SHIFT)
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# define PMP_MODE_INCM_NONE (0 << PMP_MODE_INCM_SHIFT) /* No incr or decr of addr */
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374
configs/pcblogic-pic32mx/src/up_lcd1602.c
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374
configs/pcblogic-pic32mx/src/up_lcd1602.c
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@ -0,0 +1,374 @@
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/****************************************************************************
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* configs/pcblocic-pic32mx/src/up_lcd1602.c
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*
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* This logic supports the connection of an LCD1602 LCD to the
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* STM32F4Discovery board. The LCD1602 is based on the Hitachi HD44780U LCD
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* controller
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Authors: Gregory Nutt <gnutt@nuttx.org>
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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 NuttX 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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/* LCD pin mapping (see configs/pcblogic-pic32mx/README.txt)
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*
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* ----------------------------------- ---------- ----------------------------------
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* PIC32 LCD1602 UBW32 PIN
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* PIN SIGNAL NAME PIN NAME(s)
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* ----------------------------------- ---------- ----------------------------------
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* 1. Vss GND
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* 2. Vdd Vcc (5V)
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* 3. Vee To ground via 10K potentiometer
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* 4 AN15/OCFB/PMALL/PMA0/CN12/RB15 4. RS PMA0, Selects registers
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* 82 PMRD/CN14/RD5 5. RW PMRD/PMWR, Selects read or write
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* 81 OC5/PMWR/CN13/RD4 6. E PMENB, Starts data read/write
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* 93 PMD0/RE0 7. D0 PMD0
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* 94 PMD1/RE1 8. D1 PMD1
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* 98 PMD2/RE2 9. D2 PMD2
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* 99 PMD3/RE3 10. D3 PMD3
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* 100 PMD4/RE4 11. D4 PMD4
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* 3 PMD5/RE5 12. D5 PMD5
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* 4 PMD6/RE6 13. D6 PMD6
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* 5 PMD7/RE7 14. D7 PMD7
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* 15. A To Vcc (5V) via 10K potentiometer
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* 16. K GND
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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 <stdint.h>
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#include <stdbool.h>
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#include <semaphore.h>
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#include <poll.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/lcd/hd4478ou.h>
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#include "up_arch.h"
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#include "pic32mx-pmp.h"
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#include "pic32mx-int.h"
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#include "pic32mx-internal.h"
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#include "pcblogic-internal.h"
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#ifdef CONFIG_LCD_LCD1602
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#ifndef CONFIG_PIC32MX_PMP
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# error "CONFIG_PIC32MX_PMP is required to use the LCD"
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#endif
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/* Define CONFIG_DEBUG_LCD to enable detailed LCD debug output. Verbose debug must
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* also be enabled.
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*/
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#ifndef CONFIG_DEBUG
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# undef CONFIG_DEBUG_VERBOSE
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# undef CONFIG_DEBUG_GRAPHICS
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# undef CONFIG_DEBUG_LCD
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#endif
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#ifndef CONFIG_DEBUG_VERBOSE
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# undef CONFIG_DEBUG_LCD
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#endif
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/* Pin configuratin *********************************************************/
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/* RB15, RS -- High values selects data */
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#define GPIO_LCD_RS (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTB|GPIO_PIN15)
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/* Debug ********************************************************************/
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#ifdef CONFIG_DEBUG_LCD
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# define lcddbg dbg
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# define lcdvdbg vdbg
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#else
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# define lcddbg(x...)
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# define lcdvdbg(x...)
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#endif
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/****************************************************************************
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* Private Type Definition
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****************************************************************************/
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struct lpc1620_s
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{
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bool initialized; /* True: Completed initialization sequence */
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};
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/****************************************************************************
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* Private Function Protototypes
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****************************************************************************/
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static ssize_t lcd_read(FAR struct file *, FAR char *, size_t);
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static ssize_t lcd_write(FAR struct file *, FAR const char *, size_t);
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#ifndef CONFIG_DISABLE_POLL
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static int lcd_poll(FAR struct file *filp, FAR struct pollfd *fds,
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bool setup);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* This is the driver state structure (there is no retained state information) */
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static const struct file_operations g_lcd1602 =
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{
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0, /* open */
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0, /* close */
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lcd_read, /* read */
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lcd_write, /* write */
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0, /* seek */
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0 /* ioctl */
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#ifndef CONFIG_DISABLE_POLL
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, lcd_poll /* poll */
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#endif
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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: lcd_wrcommand
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*
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* Description:
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* Configure to write an LCD command
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*
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****************************************************************************/
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static void lcd_wrcommand(uint8_t cmd)
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{
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/* Address bit A0 is RS. Set the address latch to A0=0 */
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putreg32(1, PIC32MX_PMP_ADDRCLR);
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/* And write the command to the data out register */
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putreg32((uint32_t)cmd, PIC32MX_PMP_DOUT);
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}
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/****************************************************************************
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* Name: lcd_wrdata
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*
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* Description:
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* Configure to read or write LCD data
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*
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****************************************************************************/
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static void lcd_wrdata(uint8_t data)
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{
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/* Address bit A0 is RS. Set the address latch to A0=1 */
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putreg32(1, PIC32MX_PMP_ADDRSET);
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/* And write the data to the data out register */
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putreg32((uint32_t)data, PIC32MX_PMP_DOUT);
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}
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/****************************************************************************
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* Name: lcd_rddata
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*
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* Description:
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* Configure to read or write LCD data
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*
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****************************************************************************/
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static uint8_t lcd_rddata(void)
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{
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/* Address bit A0 is RS. Set the address latch to A0=1 */
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putreg32(1, PIC32MX_PMP_ADDRSET);
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/* And read the data to the data in register */
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return (uint8_t)getreg32(PIC32MX_PMP_DIN);
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}
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/****************************************************************************
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* Name: lcd_read
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****************************************************************************/
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static ssize_t lcd_read(FAR struct file *filp, FAR char *buffer, size_t len)
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{
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int i;
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for (i = 0; i < len; i++)
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{
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*buffer++ = lcd_rddata();
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}
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return len;
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}
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/****************************************************************************
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* Name: lcd_write
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****************************************************************************/
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static ssize_t lcd_write(FAR struct file *filp, FAR const char *buffer, size_t len)
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{
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int i;
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for (i = 0; i < len; i++)
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{
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uint8_t data = *buffer++;
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lcd_wrdata(data);
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}
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return len;
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}
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/****************************************************************************
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* Name: lcd_poll
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****************************************************************************/
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#ifndef CONFIG_DISABLE_POLL
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static int lcd_poll(FAR struct file *filp, FAR struct pollfd *fds,
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bool setup)
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{
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if (setup)
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{
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/* Data is always avaialble to be read */
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fds->revents |= (fds->events & (POLLIN|POLLOUT));
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if (fds->revents != 0)
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{
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sem_post(fds->sem);
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}
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}
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return OK;
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_lcd1602_initialize
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*
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* Description:
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* Initialize the LCD1602 hardware and register the character driver.
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*
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****************************************************************************/
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int up_lcd1602_initialize(void)
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{
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uint32_t regval;
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int ret = OK;
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/* Only initialize the driver once. */
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if (!g_lcd1602.initialized)
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{
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lcdvdbg("Initializing\n");
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/* PMP Master mode configuration */
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/* Make sure that interrupts are disabled */
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putreg32(INT_PMP, PIC32MX_INT_IEC1CLR);
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/* Stop and reset the PMP module and clear the mode and control registers. */
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putreg32(0, PIC32MX_PMP_MODE);
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putreg32(0, PIC32MX_PMP_AEN);
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putreg32(0, PIC32MX_PMP_CON);
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putreg32(0, PIC32MX_PMP_ADDR);
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/* Set LCD timing values, PMP master mode 3, 8-bit mode, no address
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* increment, and no interrupts.
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*/
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regval = (PMP_MODE_WAITE_RD(0) | PMP_MODE_WAITM(3) | PMP_MODE_WAITB_1TPB |
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PMP_MODE_MODE_MODE1 | PMP_MODE_MODE8 | PMP_MODE_INCM_NONE |
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PMP_MODE_IRQM_NONE);
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putreg32(regval, PIC32MX_PMP_MODE);
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/* Enable the PMP for reading and writing
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* PMRD/PMWR is active high (1=RD; 0=WR)
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* PMENB is active high.
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* No chip selects
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* Address latch is active high
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* Enable PMRD/PMWR, PMENB, and the PMP.
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*/
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regval = (PMP_CON_RDSP | PMP_CON_WRSP | PMP_CON_ALP |
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PMP_CON_CSF_ADDR1415 | PMP_CON_PTRDEN | PMP_CON_PTWREN |
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PMP_CON_ADRMUX_NONE | PMP_CON_ON);
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putreg32(regval, PIC32MX_PMP_CON);
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/* Configure and enable the LCD */
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/* Wait > 15 milliseconds afer Vdd > 4.5V */
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up_mdelay(100);
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/* Select the 8-bit interface. BF cannot be checked before this command.
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* This needs to be done a few times with some magic delays.
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*/
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lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_DL8D | HD4478OU_FUNC_N1);
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up_mdelay(50);
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lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_DL8D | HD4478OU_FUNC_N1);
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up_udelay(50);
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lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_DL8D | HD4478OU_FUNC_N1);
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lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_DL8D | HD4478OU_FUNC_N1);
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/* Configure the display */
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lcd_wrcommand(HD4478OU_DISPLAY); /* Display, cursor, and blink off */
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lcd_wrcommand(HD4478OU_CLEAR); /* Clear the display */
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lcd_wrcommand(HD4478OU_INPUT | HD4478OU_INPUT_INCR); /* Increment mode */
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lcd_wrcommand(HD4478OU_DISPLAY | HD4478OU_DISPLAY_ON); /* Display on, cursor and blink off */
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lcd_wrcommand(HD4478OU_DDRAM_AD(0)); /* Select DDRAM RAM AD=0 */
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/* Register the LCD device driver */
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ret = register_driver("/dev/lcd1602", &g_lcd1602, 0644, &g_lcd1602);
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g_lcd1602.initialized = true;
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}
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return ret;
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}
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#endif /* CONFIG_LCD_LCD1602 */
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@ -138,7 +138,7 @@
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#define GPIO_LCD_RS (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTB|GPIO_PIN15)
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/* Debug ******************************************************************************/
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/* Debug ******************************************************************************/
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#ifdef CONFIG_DEBUG_LCD
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# define lcddbg dbg
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@ -151,6 +151,12 @@ that makes then less re-usable:
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a TFT/Transmissive color LCD module with touch-screen, FTM280C12D,
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with integrated driver IC HX8346.
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HX8347:
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configs/pic32mx7mmb/src/up_mio283qt2.c. This driver is for the MI0283QT-2
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LCD from Multi-Inno Technology Co., Ltd. This LCD is based on the Himax
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HX8347-D LCD controller.
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ILI93xx and Similar:
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configs/stm3210e-eval/src/up_lcd.c. This driver supports the following
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@ -171,10 +177,10 @@ that makes then less re-usable:
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configs/stm32f4discovery/src/up_ug2864hsweg01.c
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configs/zp214xpa/src/up_ug2864ambag01.c
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Alphnumeric Displays:
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Alphnumeric LCD Displays:
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configs/skp16c26/src/up_lcd.c. Untested alphanumeric LCD driver.
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configs/stm32f4discovery/src/up_lcd1602.c
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configs/pcblogic-pic32/src/up_lcd1602.c
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graphics/
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=========
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118
include/nuttx/lcd/hd4478ou.h
Normal file
118
include/nuttx/lcd/hd4478ou.h
Normal file
@ -0,0 +1,118 @@
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/********************************************************************************************
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* include/nuttx/lcd/hd4478ou.h
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*
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* Definitions for the Hitachi HD44780U LCD controller (as used in the
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* LCD1602).
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
#ifndef __INCLUDE_NUTTX_HD4478OU_H
|
||||
#define __INCLUDE_NUTTX_HD4478OU_H
|
||||
|
||||
/********************************************************************************************
|
||||
* Included Files
|
||||
********************************************************************************************/
|
||||
/* Command set:
|
||||
*
|
||||
* RS=0 R/W=0 : Command
|
||||
* RS=0 R/W=1 : Busy/AD, Read CT (see below)
|
||||
* RS=1 R/W=0 : Write data to CGRAM or DDRAM
|
||||
* RS=1 R/W=0 : Read data from CGRAM or DDRAM
|
||||
*/
|
||||
|
||||
#define HD4478OU_CLEAR (0x01) /* Screen Clear, Set AC to 0 */
|
||||
#define HD4478OU_RETURN (0x02) /* DDRAM AD=0, return */
|
||||
#define HD4478OU_INPUT (0x04) /* Set moving direction of cursor */
|
||||
# define HD4478OU_INPUT_SHIFT (1 << 0) /* Shift */
|
||||
# define HD4478OU_INPUT_INCR (1 << 1) /* Increment mode */
|
||||
# define HD4478OU_INPUT_DECR (0x00) /* Decrement mode */
|
||||
#define HD4478OU_DISPLAY (0x08) /* Set display, cursor, blink on/off */
|
||||
# define HD4478OU_DISPLAY_BLINK (1 << 0) /* Blink on/off */
|
||||
# define HD4478OU_DISPLAY_CURSOR (1 << 1) /* Cursor on/off */
|
||||
# define HD4478OU_DISPLAY_ON (1 << 2) /* Display on/off */
|
||||
#define HD4478OU_SHIFT (0x10) /* Remove cursor and whole diplay */
|
||||
# define HD4478OU_SHIFT_RIGHT (1 << 2) /* Shift right */
|
||||
# define HD4478OU_SHIFT_LEFT (0x00) /* Shift right */
|
||||
# define HD4478OU_SHIFT_DISPLAY (1 << 3) /* Display shift */
|
||||
# define HD4478OU_SHIFT_CURSOR (0x00) /* Cursor shift */
|
||||
#define HD4478OU_FUNC (0x20) /* Set DL, display line, font */
|
||||
# define HD4478OU_FUNC_F5x10 (1 << 2) /* 5x10 Style */
|
||||
# define HD4478OU_FUNC_F5x7 (0x00) /* 5x7 Style */
|
||||
# define HD4478OU_FUNC_N1 (1 << 3) /* N=2R */
|
||||
# define HD4478OU_FUNC_N0 (0x00) /* N=1R */
|
||||
# define HD4478OU_FUNC_DL8D (1 << 4) /* DL=8D, 8-bit interface */
|
||||
# define HD4478OU_FUNC_DL4D (0x00) /* DL=4D, 4-bit interface */
|
||||
#define HD4478OU_CGRAM_AD(a) (0x40|(a)) /* Set CGRAM AD, send receive data */
|
||||
#define HD4478OU_DDRAM_AD(a) (0x80|(a)) /* Set DDRAM AD, send receive data */
|
||||
|
||||
/* RS=0 R/W=1 : Execute internal function, read AD of CT */
|
||||
|
||||
#define HD4478OU_BUSY(bf,ac) ((bf) << 7 | (ac))
|
||||
|
||||
/********************************************************************************************
|
||||
* Pre-processor Definitions
|
||||
********************************************************************************************/
|
||||
|
||||
/********************************************************************************************
|
||||
* Public Types
|
||||
********************************************************************************************/
|
||||
|
||||
/********************************************************************************************
|
||||
* Public Data
|
||||
********************************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C"
|
||||
{
|
||||
#endif
|
||||
|
||||
/********************************************************************************************
|
||||
* Public Function Prototypes
|
||||
********************************************************************************************/
|
||||
|
||||
/********************************************************************************************
|
||||
* Name: up_lcd1602_initialize
|
||||
*
|
||||
* Description:
|
||||
* the LCD1602 is an HD4478OU-based LCD from Wave share. This function initializes the
|
||||
* LCD1602 hardware and registers the character driver as /dev/lcd1602.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
int up_lcd1602_initialize(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __INCLUDE_NUTTX_HD4478OU_H */
|
||||
Loading…
Reference in New Issue
Block a user