292 lines
7.9 KiB
C
292 lines
7.9 KiB
C
/**
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* @file HX8357.c
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*
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* Roughly based on the Adafruit_HX8357_Library
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*
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* This library should work with:
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* Adafruit 3.5" TFT 320x480 + Touchscreen Breakout
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* http://www.adafruit.com/products/2050
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*
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* Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers
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* https://www.adafruit.com/product/3651
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "hx8357.h"
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#include "disp_spi.h"
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#include "driver/gpio.h"
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#include <esp_log.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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/*********************
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* DEFINES
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*********************/
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#define TAG "HX8357"
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#define MADCTL_MY 0x80 ///< Bottom to top
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#define MADCTL_MX 0x40 ///< Right to left
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#define MADCTL_MV 0x20 ///< Reverse Mode
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#define MADCTL_ML 0x10 ///< LCD refresh Bottom to top
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#define MADCTL_RGB 0x00 ///< Red-Green-Blue pixel order
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#define MADCTL_BGR 0x08 ///< Blue-Green-Red pixel order
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#define MADCTL_MH 0x04 ///< LCD refresh right to left
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/**********************
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* TYPEDEFS
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**********************/
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/*The LCD needs a bunch of command/argument values to be initialized. They are stored in this struct. */
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typedef struct {
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uint8_t cmd;
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uint8_t data[16];
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uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
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} lcd_init_cmd_t;
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void hx8357_send_cmd(uint8_t cmd);
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static void hx8357_send_data(void * data, uint16_t length);
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static void hx8357_send_color(void * data, uint16_t length);
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/**********************
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* INITIALIZATION ARRAYS
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**********************/
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// Taken from the Adafruit driver
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static const uint8_t
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initb[] = {
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HX8357B_SETPOWER, 3,
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0x44, 0x41, 0x06,
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HX8357B_SETVCOM, 2,
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0x40, 0x10,
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HX8357B_SETPWRNORMAL, 2,
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0x05, 0x12,
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HX8357B_SET_PANEL_DRIVING, 5,
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0x14, 0x3b, 0x00, 0x02, 0x11,
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HX8357B_SETDISPLAYFRAME, 1,
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0x0c, // 6.8mhz
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HX8357B_SETPANELRELATED, 1,
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0x01, // BGR
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0xEA, 3, // seq_undefined1, 3 args
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0x03, 0x00, 0x00,
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0xEB, 4, // undef2, 4 args
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0x40, 0x54, 0x26, 0xdb,
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HX8357B_SETGAMMA, 12,
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0x00, 0x15, 0x00, 0x22, 0x00, 0x08, 0x77, 0x26, 0x66, 0x22, 0x04, 0x00,
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HX8357_MADCTL, 1,
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0xC0,
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HX8357_COLMOD, 1,
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0x55,
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HX8357_PASET, 4,
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0x00, 0x00, 0x01, 0xDF,
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HX8357_CASET, 4,
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0x00, 0x00, 0x01, 0x3F,
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HX8357B_SETDISPMODE, 1,
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0x00, // CPU (DBI) and internal oscillation ??
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HX8357_SLPOUT, 0x80 + 120/5, // Exit sleep, then delay 120 ms
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HX8357_DISPON, 0x80 + 10/5, // Main screen turn on, delay 10 ms
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0 // END OF COMMAND LIST
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}, initd[] = {
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HX8357_SWRESET, 0x80 + 100/5, // Soft reset, then delay 10 ms
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HX8357D_SETC, 3,
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0xFF, 0x83, 0x57,
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0xFF, 0x80 + 500/5, // No command, just delay 300 ms
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HX8357_SETRGB, 4,
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0x80, 0x00, 0x06, 0x06, // 0x80 enables SDO pin (0x00 disables)
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HX8357D_SETCOM, 1,
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0x25, // -1.52V
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HX8357_SETOSC, 1,
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0x68, // Normal mode 70Hz, Idle mode 55 Hz
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HX8357_SETPANEL, 1,
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0x05, // BGR, Gate direction swapped
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HX8357_SETPWR1, 6,
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0x00, // Not deep standby
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0x15, // BT
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0x1C, // VSPR
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0x1C, // VSNR
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0x83, // AP
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0xAA, // FS
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HX8357D_SETSTBA, 6,
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0x50, // OPON normal
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0x50, // OPON idle
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0x01, // STBA
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0x3C, // STBA
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0x1E, // STBA
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0x08, // GEN
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HX8357D_SETCYC, 7,
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0x02, // NW 0x02
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0x40, // RTN
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0x00, // DIV
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0x2A, // DUM
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0x2A, // DUM
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0x0D, // GDON
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0x78, // GDOFF
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HX8357D_SETGAMMA, 34,
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0x02, 0x0A, 0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b,
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0x42, 0x3A, 0x27, 0x1B, 0x08, 0x09, 0x03, 0x02, 0x0A,
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0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b, 0x42, 0x3A,
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0x27, 0x1B, 0x08, 0x09, 0x03, 0x00, 0x01,
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HX8357_COLMOD, 1,
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0x55, // 16 bit
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HX8357_MADCTL, 1,
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0xC0,
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HX8357_TEON, 1,
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0x00, // TW off
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HX8357_TEARLINE, 2,
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0x00, 0x02,
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HX8357_SLPOUT, 0x80 + 150/5, // Exit Sleep, then delay 150 ms
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HX8357_DISPON, 0x80 + 50/5, // Main screen turn on, delay 50 ms
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0, // END OF COMMAND LIST
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};
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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static uint8_t displayType = HX8357D;
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void hx8357_init(void)
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{
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//Initialize non-SPI GPIOs
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gpio_pad_select_gpio(HX8357_DC);
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gpio_set_direction(HX8357_DC, GPIO_MODE_OUTPUT);
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#if HX8357_USE_RST
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gpio_pad_select_gpio(HX8357_RST);
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gpio_set_direction(HX8357_RST, GPIO_MODE_OUTPUT);
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//Reset the display
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gpio_set_level(HX8357_RST, 0);
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vTaskDelay(10 / portTICK_RATE_MS);
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gpio_set_level(HX8357_RST, 1);
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vTaskDelay(120 / portTICK_RATE_MS);
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#endif
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ESP_LOGI(TAG, "Initialization.");
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//Send all the commands
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const uint8_t *addr = (displayType == HX8357B) ? initb : initd;
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uint8_t cmd, x, numArgs;
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while((cmd = *addr++) > 0) { // '0' command ends list
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x = *addr++;
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numArgs = x & 0x7F;
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if (cmd != 0xFF) { // '255' is ignored
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if (x & 0x80) { // If high bit set, numArgs is a delay time
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hx8357_send_cmd(cmd);
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} else {
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hx8357_send_cmd(cmd);
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hx8357_send_data((void *) addr, numArgs);
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addr += numArgs;
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}
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}
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if (x & 0x80) { // If high bit set...
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vTaskDelay(numArgs * 5 / portTICK_RATE_MS); // numArgs is actually a delay time (5ms units)
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}
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}
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hx8357_set_rotation(1);
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#if HX8357_INVERT_COLORS
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hx8357_send_cmd(HX8357_INVON);
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#else
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hx8357_send_cmd(HX8357_INVOFF);
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#endif
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}
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void hx8357_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
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{
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uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
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/* Column addresses */
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uint8_t xb[] = {
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(uint8_t) (area->x1 >> 8) & 0xFF,
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(uint8_t) (area->x1) & 0xFF,
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(uint8_t) (area->x2 >> 8) & 0xFF,
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(uint8_t) (area->x2) & 0xFF,
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};
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/* Page addresses */
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uint8_t yb[] = {
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(uint8_t) (area->y1 >> 8) & 0xFF,
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(uint8_t) (area->y1) & 0xFF,
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(uint8_t) (area->y2 >> 8) & 0xFF,
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(uint8_t) (area->y2) & 0xFF,
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};
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/*Column addresses*/
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hx8357_send_cmd(HX8357_CASET);
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hx8357_send_data(xb, 4);
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/*Page addresses*/
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hx8357_send_cmd(HX8357_PASET);
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hx8357_send_data(yb, 4);
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/*Memory write*/
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hx8357_send_cmd(HX8357_RAMWR);
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hx8357_send_color((void*)color_map, size * 2);
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}
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void hx8357_set_rotation(uint8_t r)
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{
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r = r & 3; // can't be higher than 3
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switch(r) {
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case 0:
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r = MADCTL_MX | MADCTL_MY | MADCTL_RGB;
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break;
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case 1:
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r = MADCTL_MV | MADCTL_MY | MADCTL_RGB;
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break;
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case 2:
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r = MADCTL_RGB;
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break;
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case 3:
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r = MADCTL_MX | MADCTL_MV | MADCTL_RGB;
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break;
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}
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hx8357_send_cmd(HX8357_MADCTL);
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hx8357_send_data(&r, 1);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void hx8357_send_cmd(uint8_t cmd)
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{
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disp_wait_for_pending_transactions();
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gpio_set_level(HX8357_DC, 0); /*Command mode*/
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disp_spi_send_data(&cmd, 1);
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}
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static void hx8357_send_data(void * data, uint16_t length)
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{
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disp_wait_for_pending_transactions();
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gpio_set_level(HX8357_DC, 1); /*Data mode*/
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disp_spi_send_data(data, length);
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}
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static void hx8357_send_color(void * data, uint16_t length)
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{
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disp_wait_for_pending_transactions();
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gpio_set_level(HX8357_DC, 1); /*Data mode*/
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disp_spi_send_colors(data, length);
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}
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