f4b63ebaf4
Scaled fonts (independantly in x & y direction) based on normal sized font. Effectively double sized and double height same width fonts come free (or triple etc). New routine for sending low level drivers hardware commands eg backlight brightness, contrast Power and Orientation moved to new routine. Clean up on files to simplify low level driver file overheads.
200 lines
6.6 KiB
C
200 lines
6.6 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2012
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Joel Bodenmann aka Tectu <joel@unormal.org>
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This file is part of ChibiOS-LCD-Driver.
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ChibiOS-LCD-Driver is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS-LCD-Driver is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file gdispNokia6610/gdisp_lld_board_olimexsam7ex256.h
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* @brief GDISP Graphic Driver subsystem board interface for the Olimex SAM7-EX256 board.
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*
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* @addtogroup GDISP
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* @{
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*/
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#ifndef _GDISP_LLD_BOARD_H
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#define _GDISP_LLD_BOARD_H
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// mask definitions
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#define BIT0 0x00000001
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#define BIT1 0x00000002
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#define BIT2 0x00000004
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#define BIT3 0x00000008
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#define BIT4 0x00000010
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#define BIT5 0x00000020
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#define BIT6 0x00000040
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#define BIT7 0x00000080
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#define BIT8 0x00000100
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#define BIT9 0x00000200
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#define BIT10 0x00000400
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#define BIT11 0x00000800
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#define BIT12 0x00001000
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#define BIT13 0x00002000
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#define BIT14 0x00004000
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#define BIT15 0x00008000
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#define BIT16 0x00010000
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#define BIT17 0x00020000
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#define BIT18 0x00040000
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#define BIT19 0x00080000
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#define BIT20 0x00100000
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#define BIT21 0x00200000
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#define BIT22 0x00400000
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#define BIT23 0x00800000
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#define BIT24 0x01000000
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#define BIT25 0x02000000
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#define BIT26 0x04000000
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#define BIT27 0x08000000
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#define BIT28 0x10000000
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#define BIT29 0x20000000
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#define BIT30 0x40000000
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#define BIT31 0x80000000
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// ******************************************************
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// Pointers to AT91SAM7X256 peripheral data structures
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// ******************************************************
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volatile AT91PS_PIO pPIOA = AT91C_BASE_PIOA;
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volatile AT91PS_PIO pPIOB = AT91C_BASE_PIOB;
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volatile AT91PS_SPI pSPI = AT91C_BASE_SPI0;
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volatile AT91PS_PMC pPMC = AT91C_BASE_PMC;
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volatile AT91PS_PDC pPDC = AT91C_BASE_PDC_SPI0;
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/**
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* @brief Initialise the board for the display.
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* @notes Performs the following functions:
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* 1. initialise the spi port used by your display
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* 2. initialise the reset pin (initial state not-in-reset)
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* 3. initialise the chip select pin (initial state not-active)
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* 4. initialise the backlight pin (initial state back-light off)
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*
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* @notapi
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*/
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static __inline void gdisp_lld_init_board(void) {
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// *********************************************************************************************
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// InitSpi( )
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//
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// Sets up SPI channel 0 for communications to Nokia 6610 LCD Display
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//
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// I/O ports used: PA2 = LCD Reset (set to low to reset)
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// PA12 = LCD chip select (set to low to select the LCD chip)
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// PA16 = SPI0_MISO Master In - Slave Out (not used in LCD interface)
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// PA17 = SPI0_MOSI Master Out - Slave In pin (Serial Data to LCD slave)
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// PA18 = SPI0_SPCK Serial Clock (to LCD slave)
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// PB20 = backlight control (normally PWM control, 1 = full on)
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//
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// *********************************************************************************************}
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/* This code should really use the ChibiOS driver for these functions */
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// Pin for backlight
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pPIOB->PIO_CODR = PIOB_LCD_BL_MASK; // Set PB20 to LOW
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pPIOB->PIO_OER = PIOB_LCD_BL_MASK; // Configure PB20 as output
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// Reset pin
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pPIOA->PIO_SODR = PIOA_LCD_RESET_MASK; // Set PA2 to HIGH
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pPIOA->PIO_OER = PIOA_LCD_RESET_MASK; // Configure PA2 as output
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// CS pin - this seems to be ignored
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// pPIOA->PIO_SODR = BIT12; // Set PA2 to HIGH
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// pPIOA->PIO_OER = BIT12; // Configure PA2 as output
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// Init SPI0
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// Disable the following pins from PIO control (will be used instead by the SPI0 peripheral)
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// BIT12 = PA12 -> SPI0_NPCS0 chip select
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// BIT16 = PA16 -> SPI0_MISO Master In - Slave Out (not used in LCD interface)
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// BIT17 = PA17 -> SPI0_MOSI Master Out - Slave In pin (Serial Data to LCD slave)
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// BIT18 = PA18 -> SPI0_SPCK Serial Clock (to LCD slave)
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pPIOA->PIO_PDR = BIT12 | BIT16 | BIT17 | BIT18;
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pPIOA->PIO_ASR = BIT12 | BIT16 | BIT17 | BIT18;
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pPIOA->PIO_BSR = 0;
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//enable the clock of SPI
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pPMC->PMC_PCER = 1 << AT91C_ID_SPI0;
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// Fixed mode
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pSPI->SPI_CR = 0x81; //SPI Enable, Sowtware reset
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pSPI->SPI_CR = 0x01; //SPI Enable
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//pSPI->SPI_MR = 0xE0019; //Master mode, fixed select, disable decoder, FDIV=1 (MCK), PCS=1110
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pSPI->SPI_MR = 0xE0011; //Master mode, fixed select, disable decoder, FDIV=0 (MCK), PCS=1110
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//pSPI->SPI_CSR[0] = 0x01010C11; //9bit, CPOL=1, ClockPhase=0, SCLK = 48Mhz/32*12 = 125kHz
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pSPI->SPI_CSR[0] = 0x01010311; //9bit, CPOL=1, ClockPhase=0, SCLK = 48Mhz/8 = 6MHz if using commented MR line above
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}
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/**
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* @brief Set or clear the lcd reset pin.
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*
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* @param[in] state TRUE = lcd in reset, FALSE = normal operation
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*
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* @notapi
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*/
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static __inline void gdisp_lld_setpin_reset(bool_t state) {
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if (state)
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palClearPad(IOPORT1, PIOA_LCD_RESET);
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// pPIOA->PIO_CODR = PIOA_LCD_RESET_MASK;
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else
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palSetPad(IOPORT1, PIOA_LCD_RESET);
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// pPIOA->PIO_SODR = PIOA_LCD_RESET_MASK;
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}
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/**
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* @brief Set or clear the lcd back-light pin.
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*
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* @param[in] state TRUE = lcd back-light on, FALSE = lcd back-light off
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*
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* @notapi
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*/
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static __inline void gdisp_lld_setpin_backlight(bool_t state) {
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if (state)
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palSetPad(IOPORT2, PIOB_LCD_BL);
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// pPIOB->PIO_SODR = PIOB_LCD_BL_MASK;
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else
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palClearPad(IOPORT2, PIOB_LCD_BL);
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// pPIOB->PIO_CODR = PIOB_LCD_BL_MASK;
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}
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/**
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* @brief Send a 9 bit command/data to the lcd.
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*
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* @param[in] data The data to send
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*
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* @notapi
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*/
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static __inline void gdisp_lld_write_spi(uint16_t data) {
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// wait for the previous transfer to complete
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while((pSPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);
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// send the data
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pSPI->SPI_TDR = data;
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}
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#if GDISP_HARDWARE_READPIXEL || GDISP_HARDWARE_SCROLL || defined(__DOXYGEN__)
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/**
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* @brief Read data from the lcd.
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*
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* @return The data from the lcd
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*
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* @notapi
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*/
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static __inline uint16_t gdisp_lld_read_spi(void) {
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#error "gdispNokia6610: GDISP_HARDWARE_READPIXEL and GDISP_HARDWARE_SCROLL are not supported on this board"
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return 0;
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}
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#endif
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#endif /* _GDISP_LLD_BOARD_H */
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/** @} */
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