536 lines
16 KiB
C
536 lines
16 KiB
C
/** @addtogroup ltdc_defines
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*
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* @version 1.0.0
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*
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* @author @htmlonly © @endhtmlonly 2014
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* Oliver Meier <h2obrain@gmail.com>
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*
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* @date 5 December 2014
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*
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* This library supports the LCD TFT display controller (LTDC) in the STM32F4xx
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* and STM32F7xx series of ARM Cortex Microcontrollers by ST Microelectronics.
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*
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* LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2014 Oliver Meier <h2obrain@gmail.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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*
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* This library 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**@{*/
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/** @cond */
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#ifndef LIBOPENCM3_STM32_COMMON_LTDC_COMMON_F47_H_
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/** @endcond */
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#define LIBOPENCM3_STM32_COMMON_LTDC_COMMON_F47_H_
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#include <stdint.h>
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#include <libopencm3/stm32/rcc.h>
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/**
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* LTDC
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*/
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#define LTDC_SSCR (MMIO32(LTDC_BASE + 0x08))
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#define LTDC_BPCR (MMIO32(LTDC_BASE + 0x0C))
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#define LTDC_AWCR (MMIO32(LTDC_BASE + 0x10))
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#define LTDC_TWCR (MMIO32(LTDC_BASE + 0x14))
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#define LTDC_GCR (MMIO32(LTDC_BASE + 0x18))
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#define LTDC_SRCR (MMIO32(LTDC_BASE + 0x24))
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#define LTDC_BCCR (MMIO32(LTDC_BASE + 0x2C))
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#define LTDC_IER (MMIO32(LTDC_BASE + 0x34))
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#define LTDC_ISR (MMIO32(LTDC_BASE + 0x38))
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#define LTDC_ICR (MMIO32(LTDC_BASE + 0x3C))
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#define LTDC_LIPCR (MMIO32(LTDC_BASE + 0x40))
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#define LTDC_CPSR (MMIO32(LTDC_BASE + 0x44))
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#define LTDC_CDSR (MMIO32(LTDC_BASE + 0x48))
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/* x == LTDC_LAYER_x */
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#define LTDC_LxCR(x) (MMIO32(LTDC_BASE + 0x84 + 0x80 * ((x) - 1)))
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#define LTDC_L1CR LTDC_LxCR(LTDC_LAYER_1)
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#define LTDC_L2CR LTDC_LxCR(LTDC_LAYER_2)
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#define LTDC_LxWHPCR(x) (MMIO32(LTDC_BASE + 0x88 + 0x80 * ((x) - 1)))
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#define LTDC_L1WHPCR LTDC_LxWHPCR(LTDC_LAYER_1)
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#define LTDC_L2WHPCR LTDC_LxWHPCR(LTDC_LAYER_2)
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#define LTDC_LxWVPCR(x) (MMIO32(LTDC_BASE + 0x8C + 0x80 * ((x) - 1)))
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#define LTDC_L1WVPCR LTDC_LxWVPCR(LTDC_LAYER_1)
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#define LTDC_L2WVPCR LTDC_LxWVPCR(LTDC_LAYER_2)
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#define LTDC_LxCKCR(x) (MMIO32(LTDC_BASE + 0x90 + 0x80 * ((x) - 1)))
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#define LTDC_L1CKCR LTDC_LxCKCR(LTDC_LAYER_1)
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#define LTDC_L2CKCR LTDC_LxCKCR(LTDC_LAYER_2)
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#define LTDC_LxPFCR(x) (MMIO32(LTDC_BASE + 0x94 + 0x80 * ((x) - 1)))
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#define LTDC_L1PFCR LTDC_LxPFCR(LTDC_LAYER_1)
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#define LTDC_L2PFCR LTDC_LxPFCR(LTDC_LAYER_2)
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#define LTDC_LxCACR(x) (MMIO32(LTDC_BASE + 0x98 + 0x80 * ((x) - 1)))
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#define LTDC_L1CACR LTDC_LxCACR(LTDC_LAYER_1)
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#define LTDC_L2CACR LTDC_LxCACR(LTDC_LAYER_2)
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#define LTDC_LxDCCR(x) (MMIO32(LTDC_BASE + 0x9C + 0x80 * ((x) - 1)))
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#define LTDC_L1DCCR LTDC_LxDCCR(LTDC_LAYER_1)
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#define LTDC_L2DCCR LTDC_LxDCCR(LTDC_LAYER_2)
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#define LTDC_LxBFCR(x) (MMIO32(LTDC_BASE + 0xA0 + 0x80 * ((x) - 1)))
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#define LTDC_L1BFCR LTDC_LxBFCR(LTDC_LAYER_1)
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#define LTDC_L2BFCR LTDC_LxBFCR(LTDC_LAYER_2)
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#define LTDC_LxCFBAR(x) (MMIO32(LTDC_BASE + 0xAC + 0x80 * ((x) - 1)))
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#define LTDC_L1CFBAR LTDC_LxCFBAR(LTDC_LAYER_1)
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#define LTDC_L2CFBAR LTDC_LxCFBAR(LTDC_LAYER_2)
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#define LTDC_LxCFBLR(x) (MMIO32(LTDC_BASE + 0xB0 + 0x80 * ((x) - 1)))
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#define LTDC_L1CFBLR LTDC_LxCFBLR(LTDC_LAYER_1)
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#define LTDC_L2CFBLR LTDC_LxCFBLR(LTDC_LAYER_2)
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#define LTDC_LxCFBLNR(x) (MMIO32(LTDC_BASE + 0xB4 + 0x80 * ((x) - 1)))
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#define LTDC_L1CFBLNR LTDC_LxCFBLNR(LTDC_LAYER_1)
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#define LTDC_L2CFBLNR LTDC_LxCFBLNR(LTDC_LAYER_2)
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#define LTDC_LxCLUTWR(x) (MMIO32(LTDC_BASE + 0xC4 + 0x80 * ((x) - 1)))
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#define LTDC_L1CLUTWR LTDC_LxCLUTWR(LTDC_LAYER_1)
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#define LTDC_L2CLUTWR LTDC_LxCLUTWR(LTDC_LAYER_2)
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#define LTDC_LAYER_1 1
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#define LTDC_LAYER_2 2
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/* --- LTDC_SSCR values ---------------------------------------------------- */
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/* Horizontal Synchronization Width */
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#define LTDC_SSCR_HSW_SHIFT 16
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#define LTDC_SSCR_HSW_MASK 0xfff
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/* Vertical Synchronization Height */
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#define LTDC_SSCR_VSH_SHIFT 0
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#define LTDC_SSCR_VSH_MASK 0x7ff
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/* --- LTDC_BPCR values ---------------------------------------------------- */
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/* Accumulated Horizontal Back Porch */
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#define LTDC_BPCR_AHBP_SHIFT 16
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#define LTDC_BPCR_AHBP_MASK 0xfff
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/* Accumulated Vertical Back Porch */
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#define LTDC_BPCR_AVBP_SHIFT 0
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#define LTDC_BPCR_AVBP_MASK 0x7FF
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/* --- LTDC_AWCR values ---------------------------------------------------- */
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/* Accumulated Active Width */
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#define LTDC_AWCR_AAW_SHIFT 16
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#define LTDC_AWCR_AAW_MASK 0xfff
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/* Accumulated Active Height */
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#define LTDC_AWCR_AAH_SHIFT 0
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#define LTDC_AWCR_AAH_MASK 0x7ff
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/* --- LTDC_TWCR values ---------------------------------------------------- */
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/* Total Width */
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#define LTDC_TWCR_TOTALW_SHIFT 16
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#define LTDC_TWCR_TOTALW_MASK 0xfff
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/* Total Height */
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#define LTDC_TWCR_TOTALH_SHIFT 0
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#define LTDC_TWCR_TOTALH_MASK 0x7ff
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/* GCR - control register */
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#define LTDC_GCR_LTDC_ENABLE (1<<0)
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#define LTDC_GCR_DITHER_ENABLE (1<<16)
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#define LTDC_GCR_PCPOL_ACTIVE_LOW (0<<28)
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#define LTDC_GCR_PCPOL_ACTIVE_HIGH (1<<28)
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#define LTDC_GCR_DEPOL_ACTIVE_LOW (0<<29)
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#define LTDC_GCR_DEPOL_ACTIVE_HIGH (1<<29)
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#define LTDC_GCR_VSPOL_ACTIVE_LOW (0<<30)
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#define LTDC_GCR_VSPOL_ACTIVE_HIGH (1<<30)
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#define LTDC_GCR_HSPOL_ACTIVE_LOW (0<<31)
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#define LTDC_GCR_HSPOL_ACTIVE_HIGH (1<<31)
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/* GCR - register bit defines (no semantics) */
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#define LTDC_GCR_HSPOL (1 << 31)
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#define LTDC_GCR_VSPOL (1 << 30)
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#define LTDC_GCR_DEPOL (1 << 29)
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#define LTDC_GCR_PCPOL (1 << 28)
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#define LTDC_GCR_DITHER (1 << 16)
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#define LTDC_GCR_LTDCEN (1 << 0)
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/* --- LTDC_SRCR values ---------------------------------------------------- */
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/* Vertical Blanking Reload */
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#define LTDC_SRCR_VBR (1 << 1)
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/* Immediate Reload */
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#define LTDC_SRCR_IMR (1 << 0)
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/* LTDC_BCCR - reload control */
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#define LTDC_SRCR_RELOAD_IMR (1<<0)
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#define LTDC_SRCR_RELOAD_VBR (1<<1)
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/* --- LTDC_IER values ----------------------------------------------------- */
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/* Register Reload Interrupt Enable */
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#define LTDC_IER_RRIE (1 << 3)
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/* Transfer Error Interrupt Enable */
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#define LTDC_IER_TERRIE (1 << 2)
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/* FIFO Underrun Interrupt Enable */
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#define LTDC_IER_FUIE (1 << 1)
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/* Line Interrupt Enable */
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#define LTDC_IER_LIE (1 << 0)
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/* --- LTDC_ISR values ----------------------------------------------------- */
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/* Register Reload Interrupt Flag */
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#define LTDC_ISR_RRIF (1 << 3)
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/* Transfer Error Interrupt Flag */
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#define LTDC_ISR_TERRIF (1 << 2)
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/* FIFO Underrun Interrupt Flag */
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#define LTDC_ISR_FUIF (1 << 1)
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/* Line Interrupt Flag */
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#define LTDC_ISR_LIF (1 << 0)
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/* --- LTDC_ICR values ----------------------------------------------------- */
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/* Clears Register Reload Interrupt Flag */
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#define LTDC_ICR_CRRIF (1 << 3)
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/* Clears Transfer Error Interrupt Flag */
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#define LTDC_ICR_CTERRIF (1 << 2)
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/* Clears FIFO Underrun Interrupt Flag */
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#define LTDC_ICR_CFUIF (1 << 1)
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/* Clears Line Interrupt Flag */
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#define LTDC_ICR_CLIF (1 << 0)
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/* --- LTDC_LIPCR values --------------------------------------------------- */
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/* Line Interrupt Position */
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#define LTDC_LIPCR_LIPOS_SHIFT 0
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#define LTDC_LIPCR_LIPOS_MASK 0x7ff
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/* --- LTDC_CPSR values ---------------------------------------------------- */
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/* Current X Position */
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#define LTDC_CPSR_CXPOS_SHIFT 16
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#define LTDC_CPSR_CXPOS_MASK 0xffff
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/* Current Y Position */
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#define LTDC_CPSR_CYPOS_SHIFT 0
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#define LTDC_CPSR_CYPOS_MASK 0xffff
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/* LTDC_CDSR - display status register */
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#define LTDC_CDSR_VDES (1<<0)
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#define LTDC_CDSR_HDES (1<<1)
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#define LTDC_CDSR_VSYNCS (1<<2)
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#define LTDC_CDSR_HSYNCS (1<<3)
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/* LTDC_LxCR - layer control */
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#define LTDC_LxCR_LAYER_ENABLE (1<<0)
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#define LTDC_LxCR_COLKEY_ENABLE (1<<1)
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#define LTDC_LxCR_COLTAB_ENABLE (1<<4)
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/* --- LTDC_LxWHPCR values ------------------------------------------------- */
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/* Window Horizontal Stop Position */
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#define LTDC_LxWHPCR_WHSPPOS_SHIFT 16
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#define LTDC_LxWHPCR_WHSPPOS_MASK 0xfff
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/* Window Horizontal Start Position */
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#define LTDC_LxWHPCR_WHSTPOS_SHIFT 0
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#define LTDC_LxWHPCR_WHSTPOS_MASK 0xfff
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/* --- LTDC_LxWVPCR values ------------------------------------------------- */
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/* Window Vertical Stop Position */
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#define LTDC_LxWVPCR_WVSPPOS_SHIFT 16
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#define LTDC_LxWVPCR_WVSPPOS_MASK 0x7ff
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/* Window Vertical Start Position */
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#define LTDC_LxWVPCR_WVSTPOS_SHIFT 0
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#define LTDC_LxWVPCR_WVSTPOS_MASK 0x7ff
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/* --- LTDC_LxCKCR values -------------------------------------------------- */
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/* Color Key Red */
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#define LTDC_LxCKCR_CKRED_SHIFT 16
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#define LTDC_LxCKCR_CKRED_MASK 0xff
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/* Color Key Green */
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#define LTDC_LxCKCR_CKGREEN_SHIFT 16
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#define LTDC_LxCKCR_CKGREEN_MASK 0xff
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/* Color Key Blue */
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#define LTDC_LxCKCR_CKBLUE_SHIFT 16
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#define LTDC_LxCKCR_CKBLUE_MASK 0xff
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/* LTDC_LxPFCR - Pixel formats */
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#define LTDC_LxPFCR_ARGB8888 (0b000)
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#define LTDC_LxPFCR_RGB888 (0b001)
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#define LTDC_LxPFCR_RGB565 (0b010)
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#define LTDC_LxPFCR_ARGB1555 (0b011)
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#define LTDC_LxPFCR_ARGB4444 (0b100)
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#define LTDC_LxPFCR_L8 (0b101)
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#define LTDC_LxPFCR_AL44 (0b110)
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#define LTDC_LxPFCR_AL88 (0b111)
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/* --- LTDC_LxCACR values -------------------------------------------------- */
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/* Constant Alpha */
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#define LTDC_LxCACR_CONSTA_SHIFT 0
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#define LTDC_LxCACR_CONSTA_MASK 0xff
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/* --- LTDC_LxDCCR values -------------------------------------------------- */
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/* Default Color Alpha */
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#define LTDC_LxDCCR_DCALPHA_SHIFT 24
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#define LTDC_LxDCCR_DCALPHA_MASK 1
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/* Default Color Red */
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#define LTDC_LxDCCR_DCRED_SHIFT 16
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#define LTDC_LxDCCR_DCRED_MASK 1
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/* Default Color Green */
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#define LTDC_LxDCCR_DCGREEN_SHIFT 8
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#define LTDC_LxDCCR_DCGREEN_MASK 1
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/* Default Color Blue */
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#define LTDC_LxDCCR_DCBLUE_SHIFT 0
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#define LTDC_LxDCCR_DCBLUE_MASK 1
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/* LTDC_LxBFCR - Blending factors - BF1 */
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#define LTDC_LxBFCR_BF1_CONST_ALPHA (0b100)
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#define LTDC_LxBFCR_BF1_PIXEL_ALPHA_x_CONST_ALPHA (0b110)
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/* LTDC_LxBFCR - Blending factors - BF2 */
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#define LTDC_LxBFCR_BF2_CONST_ALPHA (0b101)
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#define LTDC_LxBFCR_BF2_PIXEL_ALPHA_x_CONST_ALPHA (0b111)
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/* --- LTDC_LxCFBAR values ------------------------------------------------- */
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/* Color Frame Buffer Start Address */
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#define LTDC_LxCFBAR_CFBAR_SHIFT 0
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#define LTDC_LxCFBAR_CFBAR_MASK 0xffffffff
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/* --- LTDC_LxCFBLR values ------------------------------------------------- */
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/* Color Frame Buffer Pitch */
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#define LTDC_LxCFBLR_CFBP_SHIFT 16
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#define LTDC_LxCFBLR_CFBP_MASK 0x1fff
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/* Color Frame Buffer Line Length */
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#define LTDC_LxCFBLR_CFBLL_SHIFT 0
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#define LTDC_LxCFBLR_CFBLL_MASK 0x1fff
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/* --- LTDC_LxCFBLNR values ------------------------------------------------ */
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/* Frame Buffer Line Number */
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#define LTDC_LxCFBLNR_CFBLNBR_SHIFT 0
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#define LTDC_LxCFBLNR_CFBLNBR_MASK 0x3ff
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/* --- LTDC_LxCLUTWR values ------------------------------------------------ */
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/* CLUT Address */
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#define LTDC_LxCLUTWR_CLUTADD_SHIFT 24
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#define LTDC_LxCLUTWR_CLUTADD_MASK 0xff
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/* Red */
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#define LTDC_LxCLUTWR_RED_SHIFT 16
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#define LTDC_LxCLUTWR_RED_MASK 0xff
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/* Green */
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#define LTDC_LxCLUTWR_GREEN_SHIFT 8
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#define LTDC_LxCLUTWR_GREEN_MASK 0xff
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/* Blue */
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#define LTDC_LxCLUTWR_BLUE_SHIFT 0
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#define LTDC_LxCLUTWR_BLUE_MASK 0xff
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/**
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* simple helper macros
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*/
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/* global */
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static inline void ltdc_ctrl_enable(uint32_t ctrl_flags)
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{
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LTDC_GCR |= ctrl_flags;
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}
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static inline void ltdc_ctrl_disable(uint32_t ctrl_flags)
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{
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LTDC_GCR &= ~(ctrl_flags);
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}
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static inline void ltdc_reload(uint32_t reload_flags)
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{
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LTDC_SRCR = reload_flags;
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}
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static inline void ltdc_set_background_color(uint8_t r, uint8_t g, uint8_t b)
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{
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LTDC_BCCR = (((r)&255)<<16) |
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(((g)&255)<<8) |
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(((b)&255)<<0);
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}
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static inline void ltdc_get_current_position(uint16_t *x, uint16_t *y)
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{
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uint32_t tmp = LTDC_CPSR;
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*x = tmp >> 16;
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*y = tmp &= 0xFFFF;
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}
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static inline uint16_t ltdc_get_current_position_x(void)
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{
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return LTDC_CPSR >> 16;
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}
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static inline uint16_t ltdc_get_current_position_y(void)
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{
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return LTDC_CPSR & 0xffff;
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}
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static inline uint32_t ltdc_get_display_status(uint32_t status_flags)
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{
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return LTDC_CDSR & status_flags;
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}
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/* layers */
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static inline void ltdc_layer_ctrl_enable(uint32_t layer, uint32_t ctrl_flags)
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{
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LTDC_LxCR(layer) |= ctrl_flags;
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}
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static inline void ltdc_layer_ctrl_disable(uint32_t layer, uint32_t ctrl_flags)
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{
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LTDC_LxCR(layer) &= ~(ctrl_flags);
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}
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static inline void ltdc_set_color_key(uint32_t layer,
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uint8_t r, uint8_t g, uint8_t b)
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{
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LTDC_LxCKCR(layer) = ((((r)&255)<<16) |
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(((g)&255)<<8) |
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(((b)&255)<<0));
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}
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static inline void ltdc_set_pixel_format(uint32_t layer, uint32_t format)
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{
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LTDC_LxPFCR(layer) = format;
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}
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static inline void ltdc_set_constant_alpha(uint32_t layer, uint8_t alpha)
|
|
{
|
|
LTDC_LxCACR(layer) = ((alpha)&255);
|
|
}
|
|
|
|
static inline void ltdc_set_default_colors(uint32_t layer,
|
|
uint8_t a,
|
|
uint8_t r, uint8_t g, uint8_t b)
|
|
{
|
|
LTDC_LxDCCR(layer) = ((((a)&255)<<24) |
|
|
(((r)&255)<<16) |
|
|
(((g)&255)<<8) |
|
|
(((b)&255)<<0));
|
|
}
|
|
|
|
static inline void ltdc_set_blending_factors(uint32_t layer,
|
|
uint8_t bf1, uint8_t bf2)
|
|
{
|
|
LTDC_LxBFCR(layer) = ((bf1)<<8) | ((bf2)<<0);
|
|
}
|
|
|
|
static inline void ltdc_set_fbuffer_address(uint32_t layer, uint32_t address)
|
|
{
|
|
LTDC_LxCFBAR(layer) = (uint32_t)address;
|
|
}
|
|
|
|
static inline uint32_t ltdc_get_fbuffer_address(uint32_t layer)
|
|
{
|
|
return LTDC_LxCFBAR(layer);
|
|
}
|
|
|
|
static inline void ltdc_set_fb_line_length(uint32_t layer,
|
|
uint16_t len, uint16_t pitch)
|
|
{
|
|
LTDC_LxCFBLR(layer) = ((((pitch)&0x1FFF)<<16) | (((len)&0x1FFF)<<0));
|
|
}
|
|
|
|
static inline void ltdc_set_fb_line_count(uint32_t layer, uint16_t linecount)
|
|
{
|
|
LTDC_LxCFBLNR(layer) = (((linecount)&0x3FF)<<0);
|
|
}
|
|
|
|
/**
|
|
* more complicated helper functions
|
|
*/
|
|
void ltdc_set_tft_sync_timings(
|
|
uint16_t sync_width, uint16_t sync_height,
|
|
uint16_t h_back_porch, uint16_t v_back_porch,
|
|
uint16_t active_width, uint16_t active_height,
|
|
uint16_t h_front_porch, uint16_t v_front_porch
|
|
);
|
|
void ltdc_setup_windowing(
|
|
uint8_t layer_number,
|
|
uint16_t h_back_porch, uint16_t v_back_porch,
|
|
uint16_t active_width, uint16_t active_height
|
|
);
|
|
|
|
|
|
|
|
/**
|
|
* Helper function to wait for SRCR reload to complete or so
|
|
*/
|
|
|
|
static inline bool LTDC_SRCR_IS_RELOADING(void)
|
|
{
|
|
return (LTDC_SRCR & (LTDC_SRCR_RELOAD_VBR |
|
|
LTDC_SRCR_RELOAD_IMR)) != 0;
|
|
}
|
|
|
|
/**
|
|
* color conversion helper function
|
|
* (simulate the ltdc color conversion)
|
|
*/
|
|
|
|
static inline uint32_t ltdc_get_rgb888_from_rgb565(uint16_t rgb565)
|
|
{
|
|
uint32_t rgb565_32 = (uint32_t)rgb565;
|
|
return ((((rgb565_32) & 0xF800) >> (11-8))/31)<<16
|
|
| ((((rgb565_32) & 0x07E0) << (8-5))/63)<<8
|
|
| ((((rgb565_32) & 0x001F) << (8-0))/31)<<0;
|
|
}
|
|
|
|
/** @cond */
|
|
#endif /* LIBOPENCM3_STM32_COMMON_LTDC_COMMON_F47_H_ */
|
|
/** @endcond */
|
|
/**@}*/
|
|
|