/**************************************************************************** * config/zp214xpa/src/up_ug2864ambag01.c * arch/arm/src/board/up_ug2864ambag01.c * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include "up_arch.h" #include "chip.h" #include "lpc214x_pinsel.h" #ifdef CONFIG_LCD_UG2864AMBAG01 /**************************************************************************** * Pre-Processor Definitions ****************************************************************************/ /* Configuration ************************************************************/ /* The pin configurations here requires that SPI1 is avaialable */ /* SPI should be configured with CMD/DATA support (and no transfer methods) */ #ifndef CONFIG_SPI_CMDDATA # error "The OLED driver requires CONFIG_SPI_CMDDATA in the configuration" #endif /* Pin Configuration ********************************************************/ /* UG-2864AMBAG01 OLED Display: * * PIN NAME PIN CONFIGURATION * 1 3V3 * 2 5V * 3 RESET P0.18/CAP1.3/MISO1/MAT1.3P0.18 RESET - General purpose output * 4 DI P0.19/MAT1.2/MOSI1/CAP1.2P0.19 DI - Alternate function 2 * 5 CS P0.20/MAT1.3/SSEL1/EINT3 - General purpose output * 6 SCK P0.17/CAP1.2/SCK1/MAT1.2 - Alternate function 2 * 7 A0 P0.23/VBUS - General purpose output * 8 N/C LED- * 9 N/C LED+ (BL) * 10 GND * * Definitions and configuration for DO, DI, CS, in up_spi1.c */ /* Use either FIO or legacy GPIO */ #ifdef CONFIG_LPC214x_FIO # define RESET_PIN_REGISTER (LPC214X_FIO0_BASE+LPC214X_FIO_PIN_OFFSET) # define RESET_SET_REGISTER (LPC214X_FIO0_BASE+LPC214X_FIO_SET_OFFSET) # define RESET_CLR_REGISTER (LPC214X_FIO0_BASE+LPC214X_FIO_CLR_OFFSET) # define RESET_DIR_REGISTER (LPC214X_FIO0_BASE+LPC214X_FIO_DIR_OFFSET) #else # define RESET_PIN_REGISTER (LPC214X_GPIO0_BASE+LPC214X_GPIO_PIN_OFFSET) # define RESET_SET_REGISTER (LPC214X_GPIO0_BASE+LPC214X_GPIO_SET_OFFSET) # define RESET_CLR_REGISTER (LPC214X_GPIO0_BASE+LPC214X_GPIO_CLR_OFFSET) # define RESET_DIR_REGISTER (LPC214X_GPIO0_BASE+LPC214X_GPIO_DIR_OFFSET) #endif /* Debug ********************************************************************/ #ifdef CONFIG_DEBUG_LCD # define lcddbg(format, arg...) dbg(format, ##arg) # define lcdvdbg(format, arg...) vdbg(format, ##arg) #else # define lcddbg(x...) # define lcdvdbg(x...) #endif /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: up_nxdrvinit * * Description: * Called by NX initialization logic to configure the OLED. * ****************************************************************************/ FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno) { FAR struct spi_dev_s *spi; FAR struct lcd_dev_s *dev; uint32_t regval32; uint32_t bits32; /* Configure multiplexed pins as connected on the ZP213X/4XPA board: * * PINSEL1 P0.18/CAP1.3/MISO1/MAT1.3 Bits 4-5=00 for P0.18 */ regval32 = getreg32(LPC214X_PINSEL1); regval32 &= ~LPC214X_PINSEL1_P018_MASK; regval32 |= LPC214X_PINSEL1_P018_GPIO; putreg32(regval32, LPC214X_PINSEL1); /* Set the RESET line low, putting the OLED into the reset state. */ bits32 = (1 << 18); putreg32(bits32, RESET_CLR_REGISTER); regval32 = getreg32(RESET_DIR_REGISTER); putreg32(regval32 | bits32, RESET_DIR_REGISTER); lcdvdbg("RESET Pin Config: PINSEL1: %08x PIN: %08x DIR: %08x\n", getreg32(LPC214X_PINSEL1), getreg32(RESET_PIN_REGISTER), getreg32(RESET_DIR_REGISTER)); /* Wait a bit then release the OLED from the reset state */ up_mdelay(20); putreg32(bits32, RESET_SET_REGISTER); lcdvdbg("RESET release: PIN: %08x DIR: %08x\n", getreg32(RESET_PIN_REGISTER), getreg32(RESET_DIR_REGISTER)); /* Get the SPI1 port interface */ spi = up_spiinitialize(1); if (!spi) { lcddbg("Failed to initialize SPI port 1\n"); } else { /* Bind the SPI port to the OLED */ dev = ug2864ambag01_initialize(spi, devno); if (!dev) { lcddbg("Failed to bind SPI port 1 to OLED %d: %d\n", devno); } else { lcdvdbg("Bound SPI port 1 to OLED %d\n", devno); /* And turn the OLED on */ (void)dev->setpower(dev, CONFIG_LCD_MAXPOWER); return dev; } } return NULL; } #endif /* CONFIG_LCD_UG2864AMBAG01 */