457 lines
14 KiB
C
457 lines
14 KiB
C
/**********************************************************************
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* $Id$ LCDTerm.c 2011-12-06
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*//**
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* @file LCDTerm.c
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* @brief This is a library that can be used to display text on the LCD of Hitex 1800 board
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* @version 1.0
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* @date 06. Dec. 2011
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* @author NXP MCU SW Application Team
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*
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* Copyright(C) 2011, NXP Semiconductor
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* All rights reserved.
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*
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***********************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors’
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* relevant copyright in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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**********************************************************************/
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#if defined(HITEX_LCD_TERM)
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#include "lpc43xx_ssp.h"
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#include "lpc43xx_scu.h"
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#include "lpc43xx_cgu.h"
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//#include "lpc43xx_libcfg.h"
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#include "debug_frmwrk.h"
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#include "lpc43xx_gpio.h"
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#include "LCDTerm.h"
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/************************** PRIVATE DEFINTIONS ************************/
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/** Max buffer length */
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#define BUFFER_SIZE 0x40
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#define FONT_OFFSET 32
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#define FONT_WIDTH 5
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#define CHARS_PER_ROW 25
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#define NO_OF_ROWS 4
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#define MAX_CHARS_DISPLAYED CHARS_PER_ROW * NO_OF_ROWS
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#define ROW_PIXELS 128
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#define COL_PIXELS 8
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#define Highlight 1
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#define NoHighlight 0
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/************************** PRIVATE VARIABLES *************************/
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// SSP Configuration structure variable
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SSP_CFG_Type SSP_ConfigStruct;
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// Tx buffer
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uint8_t Tx_Buf[BUFFER_SIZE];
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// Rx buffer
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uint8_t Rx_Buf[BUFFER_SIZE];
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//Character indexes
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uint8_t Char_Index[256];
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uint8_t Highlight_Value[256];
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char Chars_Displayed[88];
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uint8_t Number_of_Chars = 0, Start_Index = 0, Current_Index = 0;
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/***************************IMPORT VARIABLES**************************/
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extern const UNS_16 x5x7_bits [];
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/************************** PRIVATE FUNCTIONS *************************/
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void delay(unsigned int n)
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{
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volatile unsigned int i,j;
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for (i=0;i<n;i++)
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for (j=0;j<400;j++)
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{;}
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}
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void data_out(unsigned char i, SSP_DATA_SETUP_Type *xferConfig);
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void comm_out(unsigned char j, SSP_DATA_SETUP_Type *xferConfig);
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void init_LCD(SSP_DATA_SETUP_Type *xferConfig);
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void Init_Indexes(void);
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/*-------------------------PRIVATE FUNCTIONS------------------------------*/
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/*-------------------------SET UP FUNCTION------------------------------*/
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/*********************************************************************//**
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* @brief Main set up function
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* @param[in] None
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* @return SSP_DATA_SETUP_Type
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**********************************************************************/
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SSP_DATA_SETUP_Type *InitLCDTerm(void)
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{
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// char * lcd_string = logo;
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unsigned char page = 0xB0;
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int i = 0, j = 0;
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static SSP_DATA_SETUP_Type xferConfig;
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Init_Indexes();
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/* Configure SSP0 pins*/
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// Configure all the pins of the LCD
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scu_pinmux(0x7,4,MD_PUP,FUNC0); // P7.4 connected to GPIO = SPI_CSI
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scu_pinmux(0xA,2,MD_PUP,FUNC0); // PA.2 connected to GPIO = LCD_RST
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scu_pinmux(0xA,3,MD_PUP,FUNC0); // PA.3 connected to GPIO = LCD_A0
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scu_pinmux(0xF,3,(MD_PUP | MD_EHS),FUNC2);
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scu_pinmux(0xF,3,(MD_PUP | MD_EHS),FUNC2);
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//Set the directions
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GPIO_SetDir(0x3,(1<<12), 1);
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GPIO_SetDir(0x4,(1<<9), 1);
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GPIO_SetDir(0x4,(1<<10), 1);
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//Reset lcd
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GPIO_ClearValue(3,(1<<12)); //set CS
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GPIO_SetValue(4,(1<<9));
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delay(100);
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GPIO_ClearValue(4,(1<<9));
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delay(100);
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GPIO_SetValue(4,(1<<9));
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delay(100);
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GPIO_SetValue(3,(1<<12)); //set CS
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GPIO_SetValue(4,(1<<10)); //set A0
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delay(100);
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// initialize SSP configuration structure to default
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SSP_ConfigStructInit(&SSP_ConfigStruct);
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//Note that the LCD does not work as expected above 35-40Mb/s
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//Setting the speed to 10 Mb/s
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SSP_ConfigStruct.ClockRate = 10000000;
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// Initialize SSP peripheral with parameter given in structure above
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SSP_Init(LPC_SSP0, &SSP_ConfigStruct);
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// Enable SSP peripheral
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SSP_Cmd(LPC_SSP0, ENABLE);
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delay(100);
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delay(100);
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xferConfig.length = 1;
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init_LCD(&xferConfig);
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//wait for the lcd to reboot
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delay(100);
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delay(100);
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delay(100);
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delay(100);
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delay(100);
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xferConfig.tx_data = Tx_Buf;
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xferConfig.rx_data = Rx_Buf;
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comm_out(0xAE, &xferConfig); //Display OFF
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comm_out(0x40, &xferConfig); //Display start address + 0x40
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page = 0xB0;
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for(i=0;i<8;i++){ //32pixel display / 8 pixels per page = 4 pages
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comm_out(page, &xferConfig); //send page address
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comm_out(0x10, &xferConfig); //column address upper 4 bits + 0x10
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comm_out(0x00, &xferConfig); //column address lower 4 bits + 0x00
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for(j=0;j<131;j++){ //128 columns wide
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data_out(0x00, &xferConfig);
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}
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page++; //after 128 columns, go to next page
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}
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comm_out(0xAF, &xferConfig);
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comm_out(0xAE, &xferConfig); //Display OFF
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comm_out(0x40, &xferConfig); //Display start address + 0x40
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comm_out(0xB0, &xferConfig);
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comm_out(0x10, &xferConfig); //column address upper 4 bits + 0x10
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comm_out(0x00, &xferConfig); //column address lower 4 bits + 0x00
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comm_out(0xAF, &xferConfig);
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//delay(100);
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return &xferConfig;
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}
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#ifdef DEBUG
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void data_out(unsigned char i, SSP_DATA_SETUP_Type *xferConfig) //Data Output Serial Interface
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{
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//unsigned int n;
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//CS = 0; //Chip Select = Active
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GPIO_ClearValue(3,(1<<12));
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//A0 = 1 = Data
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//GPIO_SetValue(4,(1<<10));
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//delay(1);
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Tx_Buf[0] = i;
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xferConfig->tx_data = Tx_Buf;
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SSP_ReadWrite(LPC_SSP0, xferConfig, SSP_TRANSFER_POLLING);
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//CS = 1; //after 1 byte, Chip Select = inactive
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delay(1);
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GPIO_SetValue(3,(1<<12));
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}
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void comm_out(unsigned char j, SSP_DATA_SETUP_Type *xferConfig) //Command Output Serial Interface
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{
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//unsigned int n;
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//CS = 0; //Chip Select = Active
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//GPIO_ClearValue(3,(1<<12));
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//A0 = 0;
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GPIO_ClearValue(4,(1<<10));
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//delay(1);
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Tx_Buf[0] = j;
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xferConfig->tx_data = Tx_Buf;
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SSP_ReadWrite(LPC_SSP0, xferConfig, SSP_TRANSFER_POLLING);
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//CS = 1; //after 1 byte, Chip Select = inactive
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delay(1);
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GPIO_SetValue(3,(1<<12));
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}
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void init_LCD(SSP_DATA_SETUP_Type *xferConfig)
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{
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comm_out(0xA0, xferConfig); //RAM->SEG output = normal
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comm_out(0xAE, xferConfig); //Display OFF
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comm_out(0xC8, xferConfig); //COM scan direction = normal
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comm_out(0xA2, xferConfig); //1/9 bias
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comm_out(0x2F, xferConfig); //power control set
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comm_out(0x20, xferConfig); //resistor ratio set
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comm_out(0x81, xferConfig); //Electronic volume command (set contrast)
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comm_out(0x1F, xferConfig); //Electronic volume value (contrast value)
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comm_out(0xAF, xferConfig);
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delay(1);
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comm_out(0xAE, xferConfig);
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comm_out(0x21, xferConfig);
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comm_out(0xAF, xferConfig);
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delay(100);
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}
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void Init_Indexes() {
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uint8_t i = 0, index = '!';
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for(i = 1; i <= 93; i++, index++) {
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Char_Index[index] = i;
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}
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Char_Index[' '] = 0;
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}
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void WriteChar(char ch, SSP_DATA_SETUP_Type *xferConfig, uint8_t nHighlight)
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{
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uint8_t Col, i, index, temp;
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uint8_t lcd_Values[5], needRefresh = 0, Chars_Displayed_c = 0;
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UNS_16 raw_value[7], raw, DisplayStart,DisplayEnd, Page_No;
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comm_out(0xAE, xferConfig);
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//Update the array of characters that are displayed right now.
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if(ch == '\b' || ch == '\r') {
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comm_out(0xAF, xferConfig);
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return;
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}
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if(ch != '\n') {
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if(Number_of_Chars < MAX_CHARS_DISPLAYED) {
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Chars_Displayed[Current_Index] = ch;
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Current_Index++;
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Number_of_Chars++;
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} else {
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Start_Index++;
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if(Start_Index >= MAX_CHARS_DISPLAYED) {
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Current_Index = Start_Index - 1;
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Start_Index = 0;
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} else {
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Current_Index = Start_Index - 1;
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}
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Chars_Displayed[Current_Index] = ch;
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Current_Index++;
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}
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if(nHighlight) {
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Highlight_Value[Current_Index-1] = Highlight;
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} else {
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Highlight_Value[Current_Index-1] = NoHighlight;
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}
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}
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//Code to handle the next line character.
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else {
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index = (((Current_Index) + CHARS_PER_ROW) % CHARS_PER_ROW); //1 index
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index = CHARS_PER_ROW - index;
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ch = ' ';
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for(temp = 0; temp < index; temp++) {
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if(Number_of_Chars < MAX_CHARS_DISPLAYED) {
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Chars_Displayed[Current_Index] = ch;
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Current_Index++;
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Number_of_Chars++;
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} else {
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Start_Index++;
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if(Start_Index >= MAX_CHARS_DISPLAYED) {
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Current_Index = Start_Index - 1;
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Start_Index = 0;
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} else {
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Current_Index = Start_Index - 1;
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}
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Chars_Displayed[Current_Index] = ch;
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Current_Index++;
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}
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//Chars_Displayed[i] = ' ';
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i++;
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for(Col = 0; Col < FONT_WIDTH; Col++)
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data_out(0, xferConfig);
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//Start_Index++;
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}
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//if(Number_of_Chars >= MAX_CHARS_DISPLAYED) {
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if(!(Number_of_Chars < (MAX_CHARS_DISPLAYED + 1))) {
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//Send the scrollbar
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data_out(0xFF, xferConfig);
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data_out(0x81, xferConfig);
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data_out(0xFF, xferConfig);
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}
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//Current_Index = i;
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ch = '\n';
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}
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//Find if the whole screen needs to be updated.
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if(!(Number_of_Chars < (MAX_CHARS_DISPLAYED + 1))) {
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if(((Start_Index + CHARS_PER_ROW) % CHARS_PER_ROW) == 1) {
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needRefresh = 1;
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} else {
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needRefresh = 0;
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}
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DisplayStart = Start_Index + CHARS_PER_ROW;
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DisplayStart = DisplayStart - (DisplayStart % CHARS_PER_ROW);
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if(DisplayStart >= MAX_CHARS_DISPLAYED) {
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DisplayStart -= MAX_CHARS_DISPLAYED;
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}
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} else {
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DisplayStart = Start_Index;
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}
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DisplayEnd = (Current_Index - 1);
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if(needRefresh == 0) {
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DisplayStart = DisplayEnd;
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}
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Page_No = ((Number_of_Chars-1) / CHARS_PER_ROW);
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Page_No |= 0xB0;
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if((Page_No == (0xB0 + NO_OF_ROWS)) && needRefresh == 1) {
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Page_No = 0xB0;
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comm_out(Page_No, xferConfig); //send page address
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comm_out(0x10, xferConfig); //column address upper 4 bits + 0x10
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comm_out(0x00, xferConfig); //column address lower 4 bits + 0x00
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} else if ((((Number_of_Chars-1) % CHARS_PER_ROW) == 0) && (Page_No != 0xB4)) {
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comm_out(Page_No, xferConfig); //send page address
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comm_out(0x10, xferConfig); //column address upper 4 bits + 0x10
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comm_out(0x00, xferConfig); //column address lower 4 bits + 0x00
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Page_No++;
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}
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if(Number_of_Chars == MAX_CHARS_DISPLAYED) {
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Number_of_Chars++;
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}
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if(ch == '\n') {
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comm_out(0xAF, xferConfig);
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return;
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}
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for(i = DisplayStart; i != (DisplayEnd+1); i++) {
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if(Chars_Displayed_c == CHARS_PER_ROW) {
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Page_No++;
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//Send the scrollbar
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if(needRefresh == 1){
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data_out(0xFF, xferConfig);
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data_out(0xFF, xferConfig);
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data_out(0xFF, xferConfig);
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}
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comm_out(Page_No, xferConfig); //send page address
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comm_out(0x10, xferConfig); //column address upper 4 bits + 0x10
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comm_out(0x00, xferConfig); //column address lower 4 bits + 0x00
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Chars_Displayed_c = 0;
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}
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if(i == MAX_CHARS_DISPLAYED) {
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i = 0;
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}
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//Calculate the indexes that are to be sent.
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ch = Chars_Displayed[i];
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for(Col = 0; Col < 7; Col++) {
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raw_value[Col] = x5x7_bits[(ch * 7) + Col];
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}
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raw = 0;
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raw = ((raw_value[0] & (0x8000)) >> 15) | ((raw_value[1] & (0x8000)) >> 14) | ((raw_value[2] & (0x8000)) >> 13)| ((raw_value[3] & (0x8000)) >> 12) | ((raw_value[4] & (0x8000)) >> 11) | ((raw_value[5] & (0x8000)) >> 10) | ((raw_value[6] & (0x8000)) >> 9);
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lcd_Values[0] = raw;
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raw = 0;
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raw = ((raw_value[0] & (0x4000)) >> 14) | ((raw_value[1] & (0x4000)) >> 13) | ((raw_value[2] & (0x4000)) >> 12)| ((raw_value[3] & (0x4000)) >> 11) | ((raw_value[4] & (0x4000)) >> 10) | ((raw_value[5] & (0x4000)) >> 9) | ((raw_value[6] & (0x4000)) >> 8);
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lcd_Values[1] = raw;
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raw = 0;
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raw = ((raw_value[0] & (0x2000)) >> 13) | ((raw_value[1] & (0x2000)) >> 12) | ((raw_value[2] & (0x2000)) >> 11)| ((raw_value[3] & (0x2000)) >> 10) | ((raw_value[4] & (0x2000)) >> 9) | ((raw_value[5] & (0x2000)) >> 8) | ((raw_value[6] & (0x2000)) >>7);
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lcd_Values[2] = raw;
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raw = 0;
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raw = ((raw_value[0] & (0x1000)) >> 12) | ((raw_value[1] & (0x1000)) >> 11) | ((raw_value[2] & (0x1000)) >> 10)| ((raw_value[3] & (0x1000)) >> 9) | ((raw_value[4] & (0x1000)) >> 8) | ((raw_value[5] & (0x1000)) >> 7) | ((raw_value[6] & (0x1000)) >> 6);
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lcd_Values[3] = raw;
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lcd_Values[4] = 0;
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for(Col = 0; Col < FONT_WIDTH; Col++) {
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if(nHighlight || (Highlight_Value[i] == Highlight))
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data_out((~(lcd_Values[Col])) & 0x7F, xferConfig);
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else
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data_out(lcd_Values[Col], xferConfig);
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}
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Chars_Displayed_c++;
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}
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//data_out(0, xferConfig);
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if(needRefresh == 1) {
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//for(i = 0; i < CHARS_PER_ROW - 1; i++) {
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for(i = 0; i < CHARS_PER_ROW - 1; i++) {
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for(Col = 0; Col < FONT_WIDTH; Col++)
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data_out(0, xferConfig);
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}
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//Send the scrollbar
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data_out(0xFF, xferConfig);
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data_out(0x81, xferConfig);
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data_out(0xFF, xferConfig);
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comm_out(0x10, xferConfig); //column address upper 4 bits + 0x10
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comm_out(0x05, xferConfig); //column address lower 4 bits + 0x00
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}
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comm_out(0xAF, xferConfig);
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}
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#endif
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#endif
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/**
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* @}
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*/
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