591 lines
22 KiB
C
591 lines
22 KiB
C
////////////////////////////////////////////////////
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// TFT_eSPI driver functions for ESP32 processors //
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////////////////////////////////////////////////////
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#ifndef _TFT_eSPI_ESP32H_
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#define _TFT_eSPI_ESP32H_
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// Processor ID reported by getSetup()
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#define PROCESSOR_ID 0x32
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// Include processor specific header
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#include "soc/spi_reg.h"
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#include "driver/spi_master.h"
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#if !defined(CONFIG_IDF_TARGET_ESP32C3) && !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32)
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#define CONFIG_IDF_TARGET_ESP32
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#endif
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// Fix IDF problems with ESP32C3
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#if CONFIG_IDF_TARGET_ESP32C3
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// Fix ESP32C3 IDF bug for missing definition
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#ifndef REG_SPI_BASE
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#define REG_SPI_BASE(i) (DR_REG_SPI1_BASE + (((i)>1) ? (((i)* 0x1000) + 0x20000) : (((~(i)) & 1)* 0x1000 )))
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#endif
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// Fix ESP32C3 IDF bug for name change
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#ifndef SPI_MOSI_DLEN_REG
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#define SPI_MOSI_DLEN_REG(x) SPI_MS_DLEN_REG(x)
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#endif
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// Fix ESP32C3 specific register reference
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#define out_w1tc out_w1tc.val
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#define out_w1ts out_w1ts.val
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#endif
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// SUPPORT_TRANSACTIONS is mandatory for ESP32 so the hal mutex is toggled
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#if !defined (SUPPORT_TRANSACTIONS)
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#define SUPPORT_TRANSACTIONS
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#endif
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/*
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ESP32:
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FSPI not defined
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HSPI = 2, uses SPI2
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VSPI = 3, uses SPI3
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ESP32-S2:
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FSPI = 1, uses SPI2
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HSPI = 2, uses SPI3
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VSPI not defined
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ESP32 C3:
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FSPI = 0, uses SPI2 ???? To be checked
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HSPI = 1, uses SPI3 ???? To be checked
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VSPI not defined
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For ESP32/S2/C3:
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SPI1_HOST = 0
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SPI2_HOST = 1
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SPI3_HOST = 2
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*/
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// ESP32 specific SPI port selection
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#ifdef USE_HSPI_PORT
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#ifdef CONFIG_IDF_TARGET_ESP32
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#define SPI_PORT HSPI //HSPI is port 2 on ESP32
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#else
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#define SPI_PORT 3 //HSPI is port 3 on ESP32 S2
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#endif
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#elif defined(USE_FSPI_PORT)
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#define SPI_PORT 2 //FSPI(ESP32 S2)
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#else
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#ifdef CONFIG_IDF_TARGET_ESP32
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#define SPI_PORT VSPI
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#else
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#define SPI_PORT 2 //FSPI(ESP32 S2)
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#endif
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#endif
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#ifdef RPI_DISPLAY_TYPE
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#define CMD_BITS (16-1)
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#else
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#define CMD_BITS (8-1)
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#endif
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// Initialise processor specific SPI functions, used by init()
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#define INIT_TFT_DATA_BUS // Not used
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// Define a generic flag for 8 bit parallel
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#if defined (ESP32_PARALLEL) // Specific to ESP32 for backwards compatibility
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#if !defined (TFT_PARALLEL_8_BIT)
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#define TFT_PARALLEL_8_BIT // Generic parallel flag
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#endif
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#endif
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// Ensure ESP32 specific flag is defined for 8 bit parallel
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#if defined (TFT_PARALLEL_8_BIT)
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#if !defined (ESP32_PARALLEL)
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#define ESP32_PARALLEL
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#endif
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#endif
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// Processor specific code used by SPI bus transaction startWrite and endWrite functions
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#if !defined (ESP32_PARALLEL)
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#if (TFT_SPI_MODE == SPI_MODE1) || (TFT_SPI_MODE == SPI_MODE2)
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#define SET_BUS_WRITE_MODE *_spi_user = SPI_USR_MOSI | SPI_CK_OUT_EDGE
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#define SET_BUS_READ_MODE *_spi_user = SPI_USR_MOSI | SPI_USR_MISO | SPI_DOUTDIN | SPI_CK_OUT_EDGE
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#else
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#define SET_BUS_WRITE_MODE *_spi_user = SPI_USR_MOSI
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#define SET_BUS_READ_MODE *_spi_user = SPI_USR_MOSI | SPI_USR_MISO | SPI_DOUTDIN
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#endif
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#else
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// Not applicable to parallel bus
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#define SET_BUS_WRITE_MODE
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#define SET_BUS_READ_MODE
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#endif
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// Code to check if DMA is busy, used by SPI bus transaction transaction and endWrite functions
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#if !defined(TFT_PARALLEL_8_BIT) && !defined(SPI_18BIT_DRIVER)
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#define ESP32_DMA
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// Code to check if DMA is busy, used by SPI DMA + transaction + endWrite functions
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#define DMA_BUSY_CHECK dmaWait()
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#else
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#define DMA_BUSY_CHECK
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#endif
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#if defined(TFT_PARALLEL_8_BIT)
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#define SPI_BUSY_CHECK
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#else
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#define SPI_BUSY_CHECK while (*_spi_cmd&SPI_USR)
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#endif
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// If smooth font is used then it is likely SPIFFS will be needed
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#ifdef SMOOTH_FONT
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// Call up the SPIFFS (SPI FLASH Filing System) for the anti-aliased fonts
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#define FS_NO_GLOBALS
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#include <FS.h>
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#include "SPIFFS.h" // ESP32 only
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#define FONT_FS_AVAILABLE
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#endif
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////////////////////////////////////////////////////////////////////////////////////////
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// Define the DC (TFT Data/Command or Register Select (RS))pin drive code
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////////////////////////////////////////////////////////////////////////////////////////
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#ifndef TFT_DC
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#define DC_C // No macro allocated so it generates no code
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#define DC_D // No macro allocated so it generates no code
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#else
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#if defined (TFT_PARALLEL_8_BIT)
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// TFT_DC, by design, must be in range 0-31 for single register parallel write
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#if (TFT_DC >= 0) && (TFT_DC < 32)
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#define DC_C GPIO.out_w1tc = (1 << TFT_DC)
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#define DC_D GPIO.out_w1ts = (1 << TFT_DC)
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#elif (TFT_DC >= 32)
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#define DC_C GPIO.out1_w1tc.val = (1 << (TFT_DC- 32))
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#define DC_D GPIO.out1_w1ts.val = (1 << (TFT_DC- 32))
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#else
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#define DC_C
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#define DC_D
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#endif
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#else
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#if (TFT_DC >= 32)
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#ifdef RPI_DISPLAY_TYPE // RPi displays need a slower DC change
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#define DC_C GPIO.out1_w1ts.val = (1 << (TFT_DC - 32)); \
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GPIO.out1_w1tc.val = (1 << (TFT_DC - 32))
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#define DC_D GPIO.out1_w1tc.val = (1 << (TFT_DC - 32)); \
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GPIO.out1_w1ts.val = (1 << (TFT_DC - 32))
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#else
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#define DC_C GPIO.out1_w1tc.val = (1 << (TFT_DC - 32))//;GPIO.out1_w1tc.val = (1 << (TFT_DC - 32))
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#define DC_D GPIO.out1_w1ts.val = (1 << (TFT_DC - 32))//;GPIO.out1_w1ts.val = (1 << (TFT_DC - 32))
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#endif
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#elif (TFT_DC >= 0)
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#if defined (RPI_DISPLAY_TYPE)
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#if defined (ILI9486_DRIVER)
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// RPi ILI9486 display needs a slower DC change
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#define DC_C GPIO.out_w1tc = (1 << TFT_DC); \
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GPIO.out_w1tc = (1 << TFT_DC)
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#define DC_D GPIO.out_w1tc = (1 << TFT_DC); \
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GPIO.out_w1ts = (1 << TFT_DC)
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#else
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// Other RPi displays need a slower C->D change
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#define DC_C GPIO.out_w1tc = (1 << TFT_DC)
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#define DC_D GPIO.out_w1tc = (1 << TFT_DC); \
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GPIO.out_w1ts = (1 << TFT_DC)
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#endif
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#else
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#define DC_C GPIO.out_w1tc = (1 << TFT_DC)//;GPIO.out_w1tc = (1 << TFT_DC)
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#define DC_D GPIO.out_w1ts = (1 << TFT_DC)//;GPIO.out_w1ts = (1 << TFT_DC)
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#endif
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#else
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#define DC_C
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#define DC_D
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#endif
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#endif
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#endif
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////////////////////////////////////////////////////////////////////////////////////////
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// Define the CS (TFT chip select) pin drive code
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////////////////////////////////////////////////////////////////////////////////////////
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#ifndef TFT_CS
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#define TFT_CS -1 // Keep DMA code happy
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#define CS_L // No macro allocated so it generates no code
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#define CS_H // No macro allocated so it generates no code
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#else
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#if defined (TFT_PARALLEL_8_BIT)
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#if TFT_CS >= 32
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#define CS_L GPIO.out1_w1tc.val = (1 << (TFT_CS - 32))
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#define CS_H GPIO.out1_w1ts.val = (1 << (TFT_CS - 32))
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#elif TFT_CS >= 0
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#define CS_L GPIO.out_w1tc = (1 << TFT_CS)
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#define CS_H GPIO.out_w1ts = (1 << TFT_CS)
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#else
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#define CS_L
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#define CS_H
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#endif
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#else
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#if (TFT_CS >= 32)
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#ifdef RPI_DISPLAY_TYPE // RPi display needs a slower CS change
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#define CS_L GPIO.out1_w1ts.val = (1 << (TFT_CS - 32)); \
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GPIO.out1_w1tc.val = (1 << (TFT_CS - 32))
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#define CS_H GPIO.out1_w1tc.val = (1 << (TFT_CS - 32)); \
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GPIO.out1_w1ts.val = (1 << (TFT_CS - 32))
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#else
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#define CS_L GPIO.out1_w1tc.val = (1 << (TFT_CS - 32)); GPIO.out1_w1tc.val = (1 << (TFT_CS - 32))
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#define CS_H GPIO.out1_w1ts.val = (1 << (TFT_CS - 32))//;GPIO.out1_w1ts.val = (1 << (TFT_CS - 32))
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#endif
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#elif (TFT_CS >= 0)
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#ifdef RPI_DISPLAY_TYPE // RPi display needs a slower CS change
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#define CS_L GPIO.out_w1ts = (1 << TFT_CS); GPIO.out_w1tc = (1 << TFT_CS)
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#define CS_H GPIO.out_w1tc = (1 << TFT_CS); GPIO.out_w1ts = (1 << TFT_CS)
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#else
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#define CS_L GPIO.out_w1tc = (1 << TFT_CS); GPIO.out_w1tc = (1 << TFT_CS)
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#define CS_H GPIO.out_w1ts = (1 << TFT_CS)//;GPIO.out_w1ts = (1 << TFT_CS)
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#endif
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#else
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#define CS_L
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#define CS_H
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#endif
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#endif
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#endif
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////////////////////////////////////////////////////////////////////////////////////////
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// Define the WR (TFT Write) pin drive code
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////////////////////////////////////////////////////////////////////////////////////////
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#if defined (TFT_WR)
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#if (TFT_WR >= 32)
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// Note: it will be ~1.25x faster if the TFT_WR pin uses a GPIO pin lower than 32
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#define WR_L GPIO.out1_w1tc.val = (1 << (TFT_WR - 32))
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#define WR_H GPIO.out1_w1ts.val = (1 << (TFT_WR - 32))
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#elif (TFT_WR >= 0)
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// TFT_WR, for best performance, should be in range 0-31 for single register parallel write
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#define WR_L GPIO.out_w1tc = (1 << TFT_WR)
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#define WR_H GPIO.out_w1ts = (1 << TFT_WR)
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#else
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#define WR_L
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#define WR_H
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#endif
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#else
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#define WR_L
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#define WR_H
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#endif
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////////////////////////////////////////////////////////////////////////////////////////
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// Define the touch screen chip select pin drive code
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////////////////////////////////////////////////////////////////////////////////////////
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#ifndef TOUCH_CS
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#define T_CS_L // No macro allocated so it generates no code
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#define T_CS_H // No macro allocated so it generates no code
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#else // XPT2046 is slow, so use slower digitalWrite here
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#define T_CS_L digitalWrite(TOUCH_CS, LOW)
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#define T_CS_H digitalWrite(TOUCH_CS, HIGH)
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#endif
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////////////////////////////////////////////////////////////////////////////////////////
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// Make sure SPI default pins are assigned if not specified by user or set to -1
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////////////////////////////////////////////////////////////////////////////////////////
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#if !defined (TFT_PARALLEL_8_BIT)
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#ifdef USE_HSPI_PORT
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#ifndef TFT_MISO
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#define TFT_MISO -1
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#endif
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#ifndef TFT_MOSI
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#define TFT_MOSI 13
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#endif
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#if (TFT_MOSI == -1)
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#undef TFT_MOSI
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#define TFT_MOSI 13
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#endif
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#ifndef TFT_SCLK
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#define TFT_SCLK 14
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#endif
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#if (TFT_SCLK == -1)
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#undef TFT_SCLK
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#define TFT_SCLK 14
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#endif
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#else // VSPI port
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#ifndef TFT_MISO
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#define TFT_MISO -1
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#endif
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#ifndef TFT_MOSI
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#define TFT_MOSI 23
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#endif
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#if (TFT_MOSI == -1)
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#undef TFT_MOSI
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#define TFT_MOSI 23
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#endif
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#ifndef TFT_SCLK
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#define TFT_SCLK 18
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#endif
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#if (TFT_SCLK == -1)
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#undef TFT_SCLK
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#define TFT_SCLK 18
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#endif
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#if defined(CONFIG_IDF_TARGET_ESP32C3) || defined(CONFIG_IDF_TARGET_ESP32S2)
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#if (TFT_MISO == -1)
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#undef TFT_MISO
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#define TFT_MISO TFT_MOSI
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#endif
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#endif
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#endif
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#endif
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////////////////////////////////////////////////////////////////////////////////////////
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// Define the parallel bus interface chip pin drive code
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////////////////////////////////////////////////////////////////////////////////////////
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#if defined (TFT_PARALLEL_8_BIT)
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// Create a bit set lookup table for data bus - wastes 1kbyte of RAM but speeds things up dramatically
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// can then use e.g. GPIO.out_w1ts = set_mask(0xFF); to set data bus to 0xFF
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#define PARALLEL_INIT_TFT_DATA_BUS \
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for (int32_t c = 0; c<256; c++) \
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{ \
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xset_mask[c] = 0; \
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if ( c & 0x01 ) xset_mask[c] |= (1 << TFT_D0); \
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if ( c & 0x02 ) xset_mask[c] |= (1 << TFT_D1); \
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if ( c & 0x04 ) xset_mask[c] |= (1 << TFT_D2); \
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if ( c & 0x08 ) xset_mask[c] |= (1 << TFT_D3); \
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if ( c & 0x10 ) xset_mask[c] |= (1 << TFT_D4); \
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if ( c & 0x20 ) xset_mask[c] |= (1 << TFT_D5); \
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if ( c & 0x40 ) xset_mask[c] |= (1 << TFT_D6); \
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if ( c & 0x80 ) xset_mask[c] |= (1 << TFT_D7); \
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} \
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// Mask for the 8 data bits to set pin directions
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#define GPIO_DIR_MASK ((1 << TFT_D0) | (1 << TFT_D1) | (1 << TFT_D2) | (1 << TFT_D3) | (1 << TFT_D4) | (1 << TFT_D5) | (1 << TFT_D6) | (1 << TFT_D7))
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#if (TFT_WR >= 32)
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// Data bits and the write line are cleared sequentially
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#define GPIO_OUT_CLR_MASK (GPIO_DIR_MASK); WR_L
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#elif (TFT_WR >= 0)
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// Data bits and the write line are cleared to 0 in one step (1.25x faster)
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#define GPIO_OUT_CLR_MASK (GPIO_DIR_MASK | (1 << TFT_WR))
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#else
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#define GPIO_OUT_CLR_MASK
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#endif
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// A lookup table is used to set the different bit patterns, this uses 1kByte of RAM
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#define set_mask(C) xset_mask[C] // 63fps Sprite rendering test 33% faster, graphicstest only 1.8% faster than shifting in real time
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// Real-time shifting alternative to above to save 1KByte RAM, 47 fps Sprite rendering test
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/*#define set_mask(C) (((C)&0x80)>>7)<<TFT_D7 | (((C)&0x40)>>6)<<TFT_D6 | (((C)&0x20)>>5)<<TFT_D5 | (((C)&0x10)>>4)<<TFT_D4 | \
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(((C)&0x08)>>3)<<TFT_D3 | (((C)&0x04)>>2)<<TFT_D2 | (((C)&0x02)>>1)<<TFT_D1 | (((C)&0x01)>>0)<<TFT_D0
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//*/
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// Write 8 bits to TFT
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#define tft_Write_8(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t)(C)); WR_H
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#if defined (SSD1963_DRIVER)
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// Write 18 bit color to TFT
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#define tft_Write_16(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) (((C) & 0xF800)>> 8)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) (((C) & 0x07E0)>> 3)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) (((C) & 0x001F)<< 3)); WR_H
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// 18 bit color write with swapped bytes
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#define tft_Write_16S(C) Cswap = ((C) >>8 | (C) << 8); tft_Write_16(Cswap)
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#else
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#ifdef PSEUDO_16_BIT
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// One write strobe for both bytes
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#define tft_Write_16(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 0)); WR_H
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#define tft_Write_16S(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 8)); WR_H
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#else
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// Write 16 bits to TFT
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#define tft_Write_16(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 8)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 0)); WR_H
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// 16 bit write with swapped bytes
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#define tft_Write_16S(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 0)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 8)); WR_H
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#endif
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#endif
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// Write 32 bits to TFT
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#define tft_Write_32(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 24)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 16)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 8)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 0)); WR_H
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// Write two concatenated 16 bit values to TFT
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#define tft_Write_32C(C,D) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 8)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 0)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((D) >> 8)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((D) >> 0)); WR_H
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// Write 16 bit value twice to TFT - used by drawPixel()
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#define tft_Write_32D(C) GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 8)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 0)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 8)); WR_H; \
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GPIO.out_w1tc = GPIO_OUT_CLR_MASK; GPIO.out_w1ts = set_mask((uint8_t) ((C) >> 0)); WR_H
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// Read pin
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#ifdef TFT_RD
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#if (TFT_RD >= 32)
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#define RD_L GPIO.out1_w1tc.val = (1 << (TFT_RD - 32))
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#define RD_H GPIO.out1_w1ts.val = (1 << (TFT_RD - 32))
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#elif (TFT_RD >= 0)
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#define RD_L GPIO.out_w1tc = (1 << TFT_RD)
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//#define RD_L digitalWrite(TFT_WR, LOW)
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#define RD_H GPIO.out_w1ts = (1 << TFT_RD)
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//#define RD_H digitalWrite(TFT_WR, HIGH)
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#else
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#define RD_L
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#define RD_H
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#endif
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#else
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#define TFT_RD -1
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#define RD_L
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#define RD_H
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#endif
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////////////////////////////////////////////////////////////////////////////////////////
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// Macros to write commands/pixel colour data to a SPI ILI948x TFT
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////////////////////////////////////////////////////////////////////////////////////////
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#elif defined (SPI_18BIT_DRIVER) // SPI 18 bit colour
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// Write 8 bits to TFT
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#define tft_Write_8(C) spi.transfer(C)
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// Convert 16 bit colour to 18 bit and write in 3 bytes
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#define tft_Write_16(C) spi.transfer(((C) & 0xF800)>>8); \
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spi.transfer(((C) & 0x07E0)>>3); \
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spi.transfer(((C) & 0x001F)<<3)
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// Future option for transfer without wait
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#define tft_Write_16N(C) tft_Write_16(C)
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// Convert swapped byte 16 bit colour to 18 bit and write in 3 bytes
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#define tft_Write_16S(C) spi.transfer((C) & 0xF8); \
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spi.transfer(((C) & 0xE000)>>11 | ((C) & 0x07)<<5); \
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spi.transfer(((C) & 0x1F00)>>5)
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// Write 32 bits to TFT
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#define tft_Write_32(C) spi.write32(C)
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// Write two concatenated 16 bit values to TFT
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#define tft_Write_32C(C,D) spi.write32((C)<<16 | (D))
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// Write 16 bit value twice to TFT
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#define tft_Write_32D(C) spi.write32((C)<<16 | (C))
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////////////////////////////////////////////////////////////////////////////////////////
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// Macros to write commands/pixel colour data to an Raspberry Pi TFT
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////////////////////////////////////////////////////////////////////////////////////////
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#elif defined (RPI_DISPLAY_TYPE)
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// ESP32 low level SPI writes for 8, 16 and 32 bit values
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// to avoid the function call overhead
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#define TFT_WRITE_BITS(D, B) \
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WRITE_PERI_REG(SPI_MOSI_DLEN_REG(SPI_PORT), B-1); \
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WRITE_PERI_REG(SPI_W0_REG(SPI_PORT), D); \
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SET_PERI_REG_MASK(SPI_CMD_REG(SPI_PORT), SPI_USR); \
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while (READ_PERI_REG(SPI_CMD_REG(SPI_PORT))&SPI_USR);
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// Write 8 bits
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#define tft_Write_8(C) TFT_WRITE_BITS((C)<<8, 16)
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// Write 16 bits with corrected endianness for 16 bit colours
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#define tft_Write_16(C) TFT_WRITE_BITS((C)<<8 | (C)>>8, 16)
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// Future option for transfer without wait
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#define tft_Write_16N(C) tft_Write_16(C)
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// Write 16 bits
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#define tft_Write_16S(C) TFT_WRITE_BITS(C, 16)
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// Write 32 bits
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#define tft_Write_32(C) TFT_WRITE_BITS(C, 32)
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// Write two address coordinates
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#define tft_Write_32C(C,D) TFT_WRITE_BITS((C)<<24 | (C), 32); \
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TFT_WRITE_BITS((D)<<24 | (D), 32)
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// Write same value twice
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#define tft_Write_32D(C) tft_Write_32C(C,C)
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////////////////////////////////////////////////////////////////////////////////////////
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// Macros for all other SPI displays
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////////////////////////////////////////////////////////////////////////////////////////
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#else
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/* Old macros
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// ESP32 low level SPI writes for 8, 16 and 32 bit values
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// to avoid the function call overhead
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#define TFT_WRITE_BITS(D, B) \
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WRITE_PERI_REG(SPI_MOSI_DLEN_REG(SPI_PORT), B-1); \
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WRITE_PERI_REG(SPI_W0_REG(SPI_PORT), D); \
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SET_PERI_REG_MASK(SPI_CMD_REG(SPI_PORT), SPI_USR); \
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while (READ_PERI_REG(SPI_CMD_REG(SPI_PORT))&SPI_USR);
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// Write 8 bits
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#define tft_Write_8(C) TFT_WRITE_BITS(C, 8)
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// Write 16 bits with corrected endianness for 16 bit colours
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#define tft_Write_16(C) TFT_WRITE_BITS((C)<<8 | (C)>>8, 16)
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// Write 16 bits
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#define tft_Write_16S(C) TFT_WRITE_BITS(C, 16)
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// Write 32 bits
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#define tft_Write_32(C) TFT_WRITE_BITS(C, 32)
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// Write two address coordinates
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#define tft_Write_32C(C,D) TFT_WRITE_BITS((uint16_t)((D)<<8 | (D)>>8)<<16 | (uint16_t)((C)<<8 | (C)>>8), 32)
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// Write same value twice
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#define tft_Write_32D(C) TFT_WRITE_BITS((uint16_t)((C)<<8 | (C)>>8)<<16 | (uint16_t)((C)<<8 | (C)>>8), 32)
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//*/
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//* Replacement slimmer macros
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#define TFT_WRITE_BITS(D, B) *_spi_mosi_dlen = B-1; \
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*_spi_w = D; \
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*_spi_cmd = SPI_USR; \
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while (*_spi_cmd & SPI_USR);
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// Write 8 bits
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#define tft_Write_8(C) TFT_WRITE_BITS(C, 8)
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// Write 16 bits with corrected endianness for 16 bit colours
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#define tft_Write_16(C) TFT_WRITE_BITS((C)<<8 | (C)>>8, 16)
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// Future option for transfer without wait
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#define tft_Write_16N(C) *_spi_mosi_dlen = 16-1; \
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*_spi_w = ((C)<<8 | (C)>>8); \
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*_spi_cmd = SPI_USR;
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// Write 16 bits
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#define tft_Write_16S(C) TFT_WRITE_BITS(C, 16)
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// Write 32 bits
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#define tft_Write_32(C) TFT_WRITE_BITS(C, 32)
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// Write two address coordinates
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#define tft_Write_32C(C,D) TFT_WRITE_BITS((uint16_t)((D)<<8 | (D)>>8)<<16 | (uint16_t)((C)<<8 | (C)>>8), 32)
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// Write same value twice
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#define tft_Write_32D(C) TFT_WRITE_BITS((uint16_t)((C)<<8 | (C)>>8)<<16 | (uint16_t)((C)<<8 | (C)>>8), 32)
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//*/
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#endif
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#ifndef tft_Write_16N
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#define tft_Write_16N tft_Write_16
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|
#endif
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////////////////////////////////////////////////////////////////////////////////////////
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|
// Macros to read from display using SPI or software SPI
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|
////////////////////////////////////////////////////////////////////////////////////////
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#if !defined (TFT_PARALLEL_8_BIT)
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|
// Read from display using SPI or software SPI
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|
// Use a SPI read transfer
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#define tft_Read_8() spi.transfer(0)
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#endif
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// Concatenate a byte sequence A,B,C,D to CDAB, P is a uint8_t pointer
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|
#define DAT8TO32(P) ( (uint32_t)P[0]<<8 | P[1] | P[2]<<24 | P[3]<<16 )
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#endif // Header end
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