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Tactiliest/Boards/UnPhone/Source/hx8357/hx8357.c
Ken Van Hoeylandt 72230129bb
unPhone implementation and more (#169) 
- Implemented [unPhone](https://unphone.net/) v9 board
- Updated `.clang-format` to better reflect the intended code style
- Fix SD card compatibility issues for all boards (frequency wasn't set well)
- Moved `I2cDevice` class from CoreS3 board project to TactilityHeadless project
- Tactility configuration now has default empty lists for apps and services fields
- Fix for Launcher app: we don't need padding when showing it vertically
- Fix for I2cDevice read/write calls that checked for `esp_err_t` instead of `bool`
- Fix for TinyUSB init that checked for `esp_err_t` instead of `bool`
2025-01-19 16:57:00 +01:00

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/**
* @file HX8357.c
*
* Roughly based on the Adafruit_HX8357_Library
*
* This library should work with:
* Adafruit 3.5" TFT 320x480 + Touchscreen Breakout
* http://www.adafruit.com/products/2050
*
* Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers
* https://www.adafruit.com/product/3651
*
*/
/*********************
* INCLUDES
*********************/
#include "hx8357.h"
#include "disp_spi.h"
#include "driver/gpio.h"
#include <esp_log.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
/*********************
* DEFINES
*********************/
#define TAG "HX8357"
/**********************
* TYPEDEFS
**********************/
static gpio_num_t dcPin = GPIO_NUM_NC;
/*The LCD needs a bunch of command/argument values to be initialized. They are stored in this struct. */
typedef struct {
uint8_t cmd;
uint8_t data[16];
uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
} lcd_init_cmd_t;
/**********************
* STATIC PROTOTYPES
**********************/
static void hx8357_send_cmd(uint8_t cmd);
static void hx8357_send_data(void * data, uint16_t length);
static void hx8357_send_color(void * data, uint16_t length);
/**********************
* INITIALIZATION ARRAYS
**********************/
// Taken from the Adafruit driver
static const uint8_t
initb[] = {
HX8357B_SETPOWER, 3,
0x44, 0x41, 0x06,
HX8357B_SETVCOM, 2,
0x40, 0x10,
HX8357B_SETPWRNORMAL, 2,
0x05, 0x12,
HX8357B_SET_PANEL_DRIVING, 5,
0x14, 0x3b, 0x00, 0x02, 0x11,
HX8357B_SETDISPLAYFRAME, 1,
0x0c, // 6.8mhz
HX8357B_SETPANELRELATED, 1,
0x01, // BGR
0xEA, 3, // seq_undefined1, 3 args
0x03, 0x00, 0x00,
0xEB, 4, // undef2, 4 args
0x40, 0x54, 0x26, 0xdb,
HX8357B_SETGAMMA, 12,
0x00, 0x15, 0x00, 0x22, 0x00, 0x08, 0x77, 0x26, 0x66, 0x22, 0x04, 0x00,
HX8357_MADCTL, 1,
0xC0,
HX8357_COLMOD, 1,
0x55,
HX8357_PASET, 4,
0x00, 0x00, 0x01, 0xDF,
HX8357_CASET, 4,
0x00, 0x00, 0x01, 0x3F,
HX8357B_SETDISPMODE, 1,
0x00, // CPU (DBI) and internal oscillation ??
HX8357_SLPOUT, 0x80 + 120/5, // Exit sleep, then delay 120 ms
HX8357_DISPON, 0x80 + 10/5, // Main screen turn on, delay 10 ms
0 // END OF COMMAND LIST
}, initd[] = {
HX8357_SWRESET, 0x80 + 100/5, // Soft reset, then delay 10 ms
HX8357D_SETC, 3,
0xFF, 0x83, 0x57,
0xFF, 0x80 + 500/5, // No command, just delay 300 ms
HX8357_SETRGB, 4,
0x80, 0x00, 0x06, 0x06, // 0x80 enables SDO pin (0x00 disables)
HX8357D_SETCOM, 1,
0x25, // -1.52V
HX8357_SETOSC, 1,
0x68, // Normal mode 70Hz, Idle mode 55 Hz
HX8357_SETPANEL, 1,
0x05, // BGR, Gate direction swapped
HX8357_SETPWR1, 6,
0x00, // Not deep standby
0x15, // BT
0x1C, // VSPR
0x1C, // VSNR
0x83, // AP
0xAA, // FS
HX8357D_SETSTBA, 6,
0x50, // OPON normal
0x50, // OPON idle
0x01, // STBA
0x3C, // STBA
0x1E, // STBA
0x08, // GEN
HX8357D_SETCYC, 7,
0x02, // NW 0x02
0x40, // RTN
0x00, // DIV
0x2A, // DUM
0x2A, // DUM
0x0D, // GDON
0x78, // GDOFF
HX8357D_SETGAMMA, 34,
0x02, 0x0A, 0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b,
0x42, 0x3A, 0x27, 0x1B, 0x08, 0x09, 0x03, 0x02, 0x0A,
0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b, 0x42, 0x3A,
0x27, 0x1B, 0x08, 0x09, 0x03, 0x00, 0x01,
HX8357_COLMOD, 1,
0x57, // 0x55 = 16 bit, 0x57 = 24bit
HX8357_MADCTL, 1,
0xC0,
HX8357_TEON, 1,
0x00, // TW off
HX8357_TEARLINE, 2,
0x00, 0x02,
HX8357_SLPOUT, 0x80 + 150/5, // Exit Sleep, then delay 150 ms
HX8357_DISPON, 0x80 + 50/5, // Main screen turn on, delay 50 ms
0, // END OF COMMAND LIST
};
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
static uint8_t displayType = HX8357D;
void hx8357_reset(gpio_num_t resetPin) {
if (resetPin != GPIO_NUM_NC) {
esp_rom_gpio_pad_select_gpio(resetPin);
gpio_set_direction(resetPin, GPIO_MODE_OUTPUT);
//Reset the display
gpio_set_level(resetPin, 0);
vTaskDelay(10 / portTICK_PERIOD_MS);
gpio_set_level(resetPin, 1);
vTaskDelay(120 / portTICK_PERIOD_MS);
}
}
void hx8357_init(gpio_num_t newDcPin) {
ESP_LOGI(TAG, "Initialization.");
dcPin = newDcPin;
//Initialize non-SPI GPIOs
esp_rom_gpio_pad_select_gpio(dcPin);
gpio_set_direction(dcPin, GPIO_MODE_OUTPUT);
//Send all the commands
const uint8_t *addr = (displayType == HX8357B) ? initb : initd;
uint8_t cmd, x, numArgs;
while((cmd = *addr++) > 0) { // '0' command ends list
x = *addr++;
numArgs = x & 0x7F;
if (cmd != 0xFF) { // '255' is ignored
if (x & 0x80) { // If high bit set, numArgs is a delay time
hx8357_send_cmd(cmd);
} else {
hx8357_send_cmd(cmd);
hx8357_send_data((void *) addr, numArgs);
addr += numArgs;
}
}
if (x & 0x80) { // If high bit set...
vTaskDelay(numArgs * 5 / portTICK_PERIOD_MS); // numArgs is actually a delay time (5ms units)
}
}
#if HX8357_INVERT_COLORS
hx8357_send_cmd(HX8357_INVON);
#else
hx8357_send_cmd(HX8357_INVOFF);
#endif
}
//(lv_display_t * disp, const lv_area_t * area, uint8_t * px_map);
void hx8357_flush(lv_disp_t* drv, const lv_area_t * area, uint8_t * color_map)
{
uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
/* Column addresses */
uint8_t xb[] = {
(uint8_t) (area->x1 >> 8) & 0xFF,
(uint8_t) (area->x1) & 0xFF,
(uint8_t) (area->x2 >> 8) & 0xFF,
(uint8_t) (area->x2) & 0xFF,
};
/* Page addresses */
uint8_t yb[] = {
(uint8_t) (area->y1 >> 8) & 0xFF,
(uint8_t) (area->y1) & 0xFF,
(uint8_t) (area->y2 >> 8) & 0xFF,
(uint8_t) (area->y2) & 0xFF,
};
/*Column addresses*/
hx8357_send_cmd(HX8357_CASET);
hx8357_send_data(xb, 4);
/*Page addresses*/
hx8357_send_cmd(HX8357_PASET);
hx8357_send_data(yb, 4);
/*Memory write*/
hx8357_send_cmd(HX8357_RAMWR);
hx8357_send_color((void*)color_map, size * (LV_COLOR_DEPTH / 8));
}
void hx8357_set_madctl(uint8_t value) {
hx8357_send_cmd(HX8357_MADCTL);
hx8357_send_data(&value, 1);
}
/**********************
* STATIC FUNCTIONS
**********************/
static void hx8357_send_cmd(uint8_t cmd)
{
disp_wait_for_pending_transactions();
gpio_set_level(dcPin, 0); /*Command mode*/
disp_spi_send_data(&cmd, 1);
}
static void hx8357_send_data(void * data, uint16_t length)
{
disp_wait_for_pending_transactions();
gpio_set_level(dcPin, 1); /*Data mode*/
disp_spi_send_data(data, length);
}
static void hx8357_send_color(void * data, uint16_t length)
{
disp_wait_for_pending_transactions();
gpio_set_level(dcPin, 1); /*Data mode*/
disp_spi_send_colors(data, length);
}
uint8_t hx8357d_get_gamma_curve_count() {
return 4;
}
void hx8357d_set_gamme_curve(uint8_t index) {
uint8_t curve = 1;
switch (index) {
case 0:
curve = 0x01;
break;
case 1:
curve = 0x02;
break;
case 2:
curve = 0x04;
break;
case 3:
curve = 0x08;
break;
}
hx8357_send_cmd(HX8357D_SETGAMMA_BY_ID);
hx8357_send_data(&curve, 1);
}
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