Browse Source
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5184 42af7a65-404d-4744-a932-0658087f49c3sbg
patacongo
13 years ago
5 changed files with 467 additions and 26 deletions
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/************************************************************************************
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* configs/shenzhou/src/up_ssd1289.c |
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* arch/arm/src/board/up_ssd1289.c |
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* |
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* This logic supports the connection of an SSD1289-based LCD to the Shenzhou IV |
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* board. |
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* |
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* Copyright (C) 2012 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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/************************************************************************************
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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 <string.h> |
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#include <errno.h> |
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#include <debug.h> |
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#include <nuttx/arch.h> |
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#include <nuttx/spi.h> |
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#include <nuttx/lcd/lcd.h> |
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#include <nuttx/lcd/ssd1289.h> |
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#include <arch/board/board.h> |
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#include "up_arch.h" |
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#include "stm32.h" |
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#include "stm32_internal.h" |
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#include "shenzhou-internal.h" |
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#ifdef CONFIG_LCD_SSD1289 |
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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_STM32_FSMC |
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# error "CONFIG_STM32_FSMC 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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/* Shenzhou LCD Hardware Definitions ************************************************/ |
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/* LCD /CS is CE1 == NOR/SRAM Bank 1
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*
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* Bank 1 = 0x60000000 | 0x00000000 |
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* Bank 2 = 0x60000000 | 0x04000000 |
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* Bank 3 = 0x60000000 | 0x08000000 |
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* Bank 4 = 0x60000000 | 0x0c000000 |
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* |
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* FSMC address bit 16 is used to distinguish command and data. FSMC address bits |
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* 0-24 correspond to ARM address bits 1-25.
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*/ |
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#define STM32_LCDBASE ((uintptr_t)(0x60000000 | 0x00000000)) |
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#define LCD_INDEX (STM32_LCDBASE) |
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#define LCD_DATA (STM32_LCDBASE + 0x00020000) |
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/* SRAM pin definitions */ |
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#define LCD_NADDRLINES 1 /* A16 */ |
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#define LCD_NDATALINES 16 /* D0-15 */ |
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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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/**************************************************************************************
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* Private Function Protototypes |
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**************************************************************************************/ |
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/* Low Level LCD access */ |
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static void stm32_select(FAR struct ssd1289_lcd_s *dev); |
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static void stm32_deselect(FAR struct ssd1289_lcd_s *dev); |
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static void stm32_index(FAR struct ssd1289_lcd_s *dev, uint8_t index); |
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#ifndef CONFIG_SSD1289_WRONLY |
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static uint16_t stm32_read(FAR struct ssd1289_lcd_s *dev); |
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#endif |
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static void stm32_write(FAR struct ssd1289_lcd_s *dev, uint16_t data); |
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static void stm32_backlight(FAR struct ssd1289_lcd_s *dev, int power); |
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/************************************************************************************
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* Private Data |
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************************************************************************************/ |
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/* TFT LCD
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* |
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* -- ---- -------------- ------------------------------------------------------------------- |
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* PN NAME SIGNAL NOTES |
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* -- ---- -------------- ------------------------------------------------------------------- |
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* 37 PB2 DATA_LE To TFT LCD (CN13, ping 28) |
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* 96 PB9 F_CS To both the TFT LCD (CN13, pin 30) and to the W25X16 SPI FLASH |
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* 34 PC5 TP_INT JP6. To TFT LCD (CN13) module (CN13, pin 26) |
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* 65 PC8 LCD_CS Active low: Pulled high (CN13, pin 19) |
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* 66 PC9 TP_CS Active low: Pulled high (CN13, pin 31) |
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* 78 PC10 SPI3_SCK To TFT LCD (CN13, pin 29) |
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* 79 PC11 SPI3_MISO To TFT LCD (CN13, pin 25) |
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* 80 PC12 SPI3_MOSI To TFT LCD (CN13, pin 27) |
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* 58 PD11 SD_CS Active low: Pulled high (See also TFT LCD CN13, pin 32) |
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* 60 PD13 LCD_RS To TFT LCD (CN13, pin 20) |
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* 61 PD14 LCD_WR To TFT LCD (CN13, pin 21) |
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* 62 PD15 LCD_RD To TFT LCD (CN13, pin 22) |
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* 97 PE0 DB00 To TFT LCD (CN13, pin 3) |
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* 98 PE1 DB01 To TFT LCD (CN13, pin 4) |
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* 1 PE2 DB02 To TFT LCD (CN13, pin 5) |
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* 2 PE3 DB03 To TFT LCD (CN13, pin 6) |
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* 3 PE4 DB04 To TFT LCD (CN13, pin 7) |
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* 4 PE5 DB05 To TFT LCD (CN13, pin 8) |
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* 5 PE6 DB06 To TFT LCD (CN13, pin 9) |
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* 38 PE7 DB07 To TFT LCD (CN13, pin 10) |
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* 39 PE8 DB08 To TFT LCD (CN13, pin 11) |
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* 40 PE9 DB09 To TFT LCD (CN13, pin 12) |
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* 41 PE10 DB10 To TFT LCD (CN13, pin 13) |
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* 42 PE11 DB11 To TFT LCD (CN13, pin 16) |
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* 43 PE12 DB12 To TFT LCD (CN13, pin 15) |
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* 44 PE13 DB13 To TFT LCD (CN13, pin 16) |
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* 45 PE14 DB14 To TFT LCD (CN13, pin 17) |
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* 46 PE15 DB15 To TFT LCD (CN13, pin 18) |
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* |
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* NOTE: The backlight signl NC_BL (CN13, pin 24) is pulled high and not under |
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* software control |
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*/ |
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#define GPIO_LCD_RESET (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\ |
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GPIO_OUTPUT_SET|GPIO_PORTC|GPIO_PIN6) |
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/* GPIO configurations unique to the LCD */ |
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static const uint32_t g_lcdconfig[] = |
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{ |
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/* PC6(RESET), FSMC_A16, FSMC_NOE, FSMC_NWE, and FSMC_NE1 */ |
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GPIO_LCD_RESET, GPIO_FSMC_A16, GPIO_FSMC_NOE, GPIO_FSMC_NWE, GPIO_FSMC_NE1 |
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}; |
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#define NLCD_CONFIG (sizeof(g_lcdconfig)/sizeof(uint32_t)) |
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/* This is the driver state structure (there is no retained state information) */ |
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static struct ssd1289_lcd_s g_ssd1289 = |
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{ |
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.select = stm32_select, |
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.deselect = stm32_deselect, |
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.index = stm32_index, |
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#ifndef CONFIG_SSD1289_WRONLY |
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.read = stm32_read, |
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#endif |
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.write = stm32_write, |
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.backlight = stm32_backlight |
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}; |
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/* The saved instance of the LCD driver */ |
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static FAR struct lcd_dev_s *g_ssd1289drvr; |
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/************************************************************************************
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* Private Functions |
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************************************************************************************/ |
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/************************************************************************************
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* Name: stm32_select |
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* |
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* Description: |
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* Select the LCD device |
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* |
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************************************************************************************/ |
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static void stm32_select(FAR struct ssd1289_lcd_s *dev) |
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{ |
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/* Does not apply to this hardware */ |
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} |
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/************************************************************************************
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* Name: stm32_deselect |
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* |
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* Description: |
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* De-select the LCD device |
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* |
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************************************************************************************/ |
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static void stm32_deselect(FAR struct ssd1289_lcd_s *dev) |
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{ |
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/* Does not apply to this hardware */ |
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} |
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/************************************************************************************
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* Name: stm32_deselect |
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* |
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* Description: |
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* Set the index register |
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* |
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************************************************************************************/ |
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static void stm32_index(FAR struct ssd1289_lcd_s *dev, uint8_t index) |
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{ |
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putreg16((uint16_t)index, LCD_INDEX); |
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} |
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/************************************************************************************
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* Name: stm32_read |
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* |
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* Description: |
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* Read LCD data (GRAM data or register contents) |
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* |
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************************************************************************************/ |
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#ifndef CONFIG_SSD1289_WRONLY |
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static uint16_t stm32_read(FAR struct ssd1289_lcd_s *dev) |
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{ |
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return getreg16(LCD_DATA); |
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} |
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#endif |
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/************************************************************************************
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* Name: stm32_write |
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* |
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* Description: |
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* Write LCD data (GRAM data or register contents) |
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* |
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************************************************************************************/ |
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static void stm32_write(FAR struct ssd1289_lcd_s *dev, uint16_t data) |
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{ |
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putreg16((uint16_t)data, LCD_DATA); |
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} |
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/************************************************************************************
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* Name: stm32_write |
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* |
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* Description: |
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* Write LCD data (GRAM data or register contents) |
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* |
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************************************************************************************/ |
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static void stm32_backlight(FAR struct ssd1289_lcd_s *dev, int power) |
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{ |
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#warning "Missing logic" |
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} |
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/************************************************************************************
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* Name: stm32_selectlcd |
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* |
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* Description: |
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* Initialize to the LCD |
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* |
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************************************************************************************/ |
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void stm32_selectlcd(void) |
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{ |
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/* Configure GPIO pins */ |
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stm32_extmemdata(LCD_NDATALINES); /* Common data lines: D0-D15 */ |
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stm32_extmemgpios(g_lcdconfig, NLCD_CONFIG); /* LCD-specific control lines */ |
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/* Enable AHB clocking to the FSMC */ |
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stm32_enablefsmc(); |
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/* Color LCD configuration (LCD configured as follow):
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*
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* - Data/Address MUX = Disable "FSMC_BCR_MUXEN" just not enable it. |
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* - Extended Mode = Disable "FSMC_BCR_EXTMOD" |
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* - Memory Type = SRAM "FSMC_BCR_SRAM" |
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* - Data Width = 16bit "FSMC_BCR_MWID16" |
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* - Write Operation = Enable "FSMC_BCR_WREN" |
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* - Asynchronous Wait = Disable |
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*/ |
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/* Bank1 NOR/SRAM control register configuration */ |
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putreg32(FSMC_BCR_SRAM | FSMC_BCR_MWID16 | FSMC_BCR_WREN, STM32_FSMC_BCR1); |
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/* Bank1 NOR/SRAM timing register configuration */ |
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putreg32(FSMC_BTR_ADDSET(5) | FSMC_BTR_ADDHLD(0) | FSMC_BTR_DATAST(9) | FSMC_BTR_BUSTRUN(0) | |
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FSMC_BTR_CLKDIV(0) | FSMC_BTR_DATLAT(0) | FSMC_BTR_ACCMODA, STM32_FSMC_BTR1); |
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putreg32(0xffffffff, STM32_FSMC_BWTR1); |
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/* Enable the bank by setting the MBKEN bit */ |
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putreg32(FSMC_BCR_MBKEN | FSMC_BCR_SRAM | FSMC_BCR_MWID16 | FSMC_BCR_WREN, STM32_FSMC_BCR1); |
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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_lcdinitialize |
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* |
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* Description: |
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* Initialize the LCD video hardware. The initial state of the LCD is fully |
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* initialized, display memory cleared, and the LCD ready to use, but with the power |
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* setting at 0 (full off). |
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* |
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************************************************************************************/ |
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int up_lcdinitialize(void) |
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{ |
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/* Only initialize the driver once */ |
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if (!g_ssd1289drvr) |
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{ |
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lcdvdbg("Initializing\n"); |
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/* Configure GPIO pins and configure the FSMC to support the LCD */ |
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stm32_selectlcd(); |
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/* Reset the LCD (active low) */ |
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stm32_gpiowrite(GPIO_LCD_RESET, false); |
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up_mdelay(5); |
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stm32_gpiowrite(GPIO_LCD_RESET, true); |
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/* Configure and enable the LCD */ |
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up_mdelay(50); |
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g_ssd1289drvr = ssd1289_lcdinitialize(&g_ssd1289); |
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if (!g_ssd1289drvr) |
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{ |
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lcddbg("ERROR: ssd1289_lcdinitialize failed\n"); |
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return -ENODEV; |
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} |
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} |
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/* Clear the display (setting it to the color 0=black) */ |
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#if 0 /* Already done in the driver */
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ssd1289_clear(g_ssd1289drvr, 0); |
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#endif |
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/* Turn the display off */ |
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g_ssd1289drvr->setpower(g_ssd1289drvr, 0); |
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return OK; |
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} |
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/************************************************************************************
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* Name: up_lcdgetdev |
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* |
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* Description: |
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* Return a a reference to the LCD object for the specified LCD. This allows |
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* suport for multiple LCD devices. |
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* |
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************************************************************************************/ |
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FAR struct lcd_dev_s *up_lcdgetdev(int lcddev) |
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{ |
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DEBUGASSERT(lcddev == 0); |
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return g_ssd1289drvr; |
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} |
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/************************************************************************************
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* Name: up_lcduninitialize |
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* |
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* Description: |
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* Unitialize the LCD support |
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* |
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************************************************************************************/ |
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void up_lcduninitialize(void) |
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{ |
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/* Turn the display off */ |
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g_ssd1289drvr->setpower(g_ssd1289drvr, 0); |
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} |
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#endif /* CONFIG_LCD_SSD1289 */ |
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