212 lines
6.3 KiB
C
212 lines
6.3 KiB
C
/*
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*
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* HIGH SPEED LOW LEVEL DISPLAY FUNCTIONS USING DIRECT TRANSFER MODE
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*
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*/
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#ifndef _TFTSPI_H_
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#define _TFTSPI_H_
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#include "tftspi.h"
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#include "lobo_spi.h"
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#include "sdkconfig.h"
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// === Screen orientation constants ===
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#define PORTRAIT 0
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#define LANDSCAPE 1
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#define PORTRAIT_FLIP 2
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#define LANDSCAPE_FLIP 3
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// ** Set the correct configuration for Adafruit TFT Feather
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// ---------------------------------------------------------
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#define DEFAULT_TFT_DISPLAY_WIDTH 240
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#define DEFAULT_TFT_DISPLAY_HEIGHT 320
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#define DISP_COLOR_BITS_24 0x66
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#define DEFAULT_GAMMA_CURVE 0
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#define DEFAULT_SPI_CLOCK 26000000
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#define TFT_RGB_BGR 0x08
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// ---------------------------------------------------------
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// ##############################################################
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// #### Global variables ####
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// ##############################################################
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// ==== Spi clock for reading data from display memory in Hz ====
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extern uint32_t max_rdclock;
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// ==== Display dimensions in pixels ============================
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extern int _width;
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extern int _height;
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// ==== Spi device handles for display and touch screen =========
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extern spi_lobo_device_handle_t disp_spi;
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// ##############################################################
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// 24-bit color type structure
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typedef struct __attribute__((__packed__)) {
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//typedef struct {
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uint8_t r;
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uint8_t g;
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uint8_t b;
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} color_t ;
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// ==== Display commands constants ====
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#define TFT_INVOFF 0x20
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#define TFT_INVONN 0x21
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#define TFT_DISPOFF 0x28
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#define TFT_DISPON 0x29
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#define TFT_MADCTL 0x36
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#define TFT_PTLAR 0x30
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#define TFT_ENTRYM 0xB7
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#define TFT_CMD_NOP 0x00
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#define TFT_CMD_SWRESET 0x01
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#define TFT_CMD_RDDID 0x04
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#define TFT_CMD_RDDST 0x09
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#define TFT_CMD_SLPIN 0x10
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#define TFT_CMD_SLPOUT 0x11
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#define TFT_CMD_PTLON 0x12
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#define TFT_CMD_NORON 0x13
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#define TFT_CMD_RDMODE 0x0A
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#define TFT_CMD_RDMADCTL 0x0B
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#define TFT_CMD_RDPIXFMT 0x0C
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#define TFT_CMD_RDIMGFMT 0x0D
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#define TFT_CMD_RDSELFDIAG 0x0F
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#define TFT_CMD_GAMMASET 0x26
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#define TFT_CMD_FRMCTR1 0xB1
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#define TFT_CMD_FRMCTR2 0xB2
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#define TFT_CMD_FRMCTR3 0xB3
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#define TFT_CMD_INVCTR 0xB4
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#define TFT_CMD_DFUNCTR 0xB6
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#define TFT_CMD_PWCTR1 0xC0
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#define TFT_CMD_PWCTR2 0xC1
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#define TFT_CMD_PWCTR3 0xC2
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#define TFT_CMD_PWCTR4 0xC3
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#define TFT_CMD_PWCTR5 0xC4
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#define TFT_CMD_VMCTR1 0xC5
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#define TFT_CMD_VMCTR2 0xC7
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#define TFT_CMD_RDID1 0xDA
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#define TFT_CMD_RDID2 0xDB
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#define TFT_CMD_RDID3 0xDC
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#define TFT_CMD_RDID4 0xDD
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#define TFT_CMD_GMCTRP1 0xE0
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#define TFT_CMD_GMCTRN1 0xE1
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#define TFT_CMD_POWERA 0xCB
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#define TFT_CMD_POWERB 0xCF
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#define TFT_CMD_POWER_SEQ 0xED
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#define TFT_CMD_DTCA 0xE8
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#define TFT_CMD_DTCB 0xEA
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#define TFT_CMD_PRC 0xF7
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#define TFT_CMD_3GAMMA_EN 0xF2
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#define ST_CMD_VCOMS 0xBB
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#define ST_CMD_FRCTRL2 0xC6
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#define ST_CMD_PWCTR1 0xD0
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#define MADCTL_MY 0x80
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#define MADCTL_MX 0x40
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#define MADCTL_MV 0x20
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#define MADCTL_ML 0x10
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#define MADCTL_MH 0x04
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#define TFT_CASET 0x2A
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#define TFT_PASET 0x2B
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#define TFT_RAMWR 0x2C
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#define TFT_RAMRD 0x2E
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#define TFT_CMD_PIXFMT 0x3A
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#define TFT_CMD_DELAY 0x80
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// Initialization sequence for ILI7341
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// ====================================
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static const uint8_t ILI9341_init[] = {
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24, // 24 commands in list
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TFT_CMD_SWRESET, TFT_CMD_DELAY, // 1: Software reset, no args, w/delay
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250, // 200 ms delay
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TFT_CMD_POWERA, 5, 0x39, 0x2C, 0x00, 0x34, 0x02,
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TFT_CMD_POWERB, 3, 0x00, 0XC1, 0X30,
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0xEF, 3, 0x03, 0x80, 0x02,
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TFT_CMD_DTCA, 3, 0x85, 0x00, 0x78,
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TFT_CMD_DTCB, 2, 0x00, 0x00,
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TFT_CMD_POWER_SEQ, 4, 0x64, 0x03, 0X12, 0X81,
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TFT_CMD_PRC, 1, 0x20,
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TFT_CMD_PWCTR1, 1, 0x23, //Power control VRH[5:0]
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TFT_CMD_PWCTR2, 1, 0x10, //Power control SAP[2:0];BT[3:0]
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TFT_CMD_VMCTR1, 2, 0x3e, 0x28, //VCM control
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TFT_CMD_VMCTR2, 1, 0x86, //VCM control2
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TFT_MADCTL, 1, // Memory Access Control (orientation)
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(MADCTL_MX | TFT_RGB_BGR),
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// *** INTERFACE PIXEL FORMAT: 0x66 -> 18 bit; 0x55 -> 16 bit
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TFT_CMD_PIXFMT, 1, DISP_COLOR_BITS_24,
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TFT_INVOFF, 0,
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TFT_CMD_FRMCTR1, 2, 0x00, 0x18,
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TFT_CMD_DFUNCTR, 4, 0x08, 0x82, 0x27, 0x00, // Display Function Control
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TFT_PTLAR, 4, 0x00, 0x00, 0x01, 0x3F,
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TFT_CMD_3GAMMA_EN, 1, 0x00, // 3Gamma Function: Disable (0x02), Enable (0x03)
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TFT_CMD_GAMMASET, 1, 0x01, //Gamma curve selected (0x01, 0x02, 0x04, 0x08)
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TFT_CMD_GMCTRP1, 15, //Positive Gamma Correction
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0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00,
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TFT_CMD_GMCTRN1, 15, //Negative Gamma Correction
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0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F,
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TFT_CMD_SLPOUT, TFT_CMD_DELAY, // Sleep out
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200, // 120 ms delay
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TFT_DISPON, TFT_CMD_DELAY, 200,
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};
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// ==== Public functions =========================================================
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// == Low level functions; usually not used directly ==
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esp_err_t wait_trans_finish(uint8_t free_line);
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void disp_spi_transfer_cmd(int8_t cmd);
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void disp_spi_transfer_cmd_data(int8_t cmd, uint8_t *data, uint32_t len);
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void drawPixel(int16_t x, int16_t y, color_t color, uint8_t sel);
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void send_data(int x1, int y1, int x2, int y2, uint32_t len, color_t *buf);
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void mgos_ili9341_pushColorRep(int x1, int y1, int x2, int y2, color_t data, uint32_t len);
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int read_data(int x1, int y1, int x2, int y2, int len, uint8_t *buf, uint8_t set_sp);
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color_t readPixel(int16_t x, int16_t y);
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int touch_get_data(uint8_t type);
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// Deactivate display's CS line
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//========================
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esp_err_t disp_deselect();
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// Activate display's CS line and configure SPI interface if necessary
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//======================
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esp_err_t disp_select();
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// Find maximum spi clock for successful read from display RAM
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// ** Must be used AFTER the display is initialized **
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//======================
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uint32_t find_rd_speed();
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// Change the screen rotation.
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// Input: m new rotation value (0 to 3)
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//=================================
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void _tft_setRotation(uint8_t rot);
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// Perform display initialization sequence
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// Sets orientation to landscape; clears the screen
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// * All pins must be configured
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// * SPI interface must already be setup
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//======================
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void mgos_ili9341_display_init();
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// ===============================================================================
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#endif
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