258 lines
7.9 KiB
C
258 lines
7.9 KiB
C
/**
|
|
* @file st7735s.c
|
|
*
|
|
*/
|
|
|
|
/*********************
|
|
* INCLUDES
|
|
*********************/
|
|
#include "st7735s.h"
|
|
#include "disp_spi.h"
|
|
#include "driver/gpio.h"
|
|
#include "esp_log.h"
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
|
|
#ifdef CONFIG_LV_M5STICKC_HANDLE_AXP192
|
|
#include "i2c_manager/i2c_manager.h"
|
|
#endif
|
|
|
|
/*********************
|
|
* DEFINES
|
|
*********************/
|
|
#define TAG "ST7735S"
|
|
#define AXP192_I2C_ADDRESS 0x34
|
|
|
|
/**********************
|
|
* TYPEDEFS
|
|
**********************/
|
|
|
|
/*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 st7735s_send_cmd(uint8_t cmd);
|
|
static void st7735s_send_data(void * data, uint16_t length);
|
|
static void st7735s_send_color(void * data, uint16_t length);
|
|
static void st7735s_set_orientation(uint8_t orientation);
|
|
static void axp192_write_byte(uint8_t addr, uint8_t data);
|
|
static void axp192_init();
|
|
static void axp192_sleep_in();
|
|
static void axp192_sleep_out();
|
|
|
|
/**********************
|
|
* STATIC VARIABLES
|
|
**********************/
|
|
uint8_t st7735s_portrait_mode = 0;
|
|
|
|
/**********************
|
|
* MACROS
|
|
**********************/
|
|
|
|
/**********************
|
|
* GLOBAL FUNCTIONS
|
|
**********************/
|
|
|
|
void st7735s_init(void)
|
|
{
|
|
#ifdef CONFIG_LV_M5STICKC_HANDLE_AXP192
|
|
axp192_init();
|
|
#endif
|
|
|
|
lcd_init_cmd_t init_cmds[]={
|
|
{ST7735_SWRESET, {0}, 0x80}, // Software reset, 0 args, w/delay 150
|
|
{ST7735_SLPOUT, {0}, 0x80}, // Out of sleep mode, 0 args, w/delay 500
|
|
{ST7735_FRMCTR1, {0x01, 0x2C, 0x2D}, 3}, // Frame rate ctrl - normal mode, 3 args: Rate = fosc/(1x2+40) * (LINE+2C+2D)
|
|
{ST7735_FRMCTR2, {0x01, 0x2C, 0x2D}, 3}, // Frame rate control - idle mode, 3 args:Rate = fosc/(1x2+40) * (LINE+2C+2D)
|
|
{ST7735_FRMCTR3, {0x01, 0x2C, 0x2D,0x01, 0x2C, 0x2D}, 6}, //Frame rate ctrl - partial mode, 6 args:Dot inversion mode. Line inversion mode
|
|
{ST7735_INVCTR, {0x07}, 1}, // Display inversion ctrl, 1 arg, no delay:No inversion
|
|
{ST7735_PWCTR1, {0xA2,0x02, 0x84}, 3}, // Power control, 3 args, no delay:-4.6V AUTO mode
|
|
{ST7735_PWCTR2, {0xC5}, 1}, // Power control, 1 arg, no delay:VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
|
|
{ST7735_PWCTR3, {0x0A, 0x00}, 2}, // Power control, 2 args, no delay: Opamp current small, Boost frequency
|
|
{ST7735_PWCTR4, {0x8A,0x2A }, 2}, // Power control, 2 args, no delay: BCLK/2, Opamp current small & Medium low
|
|
{ST7735_PWCTR5, {0x8A, 0xEE}, 2}, // Power control, 2 args, no delay:
|
|
{ST7735_VMCTR1, {0x0E}, 1}, // Power control, 1 arg, no delay:
|
|
#if ST7735S_INVERT_COLORS == 1
|
|
{ST7735_INVON, {0}, 0}, // set inverted mode
|
|
#else
|
|
{ST7735_INVOFF, {0}, 0}, // set non-inverted mode
|
|
#endif
|
|
{ST7735_COLMOD, {0x05}, 1}, // set color mode, 1 arg, no delay: 16-bit color
|
|
{ST7735_GMCTRP1, {0x02, 0x1c, 0x07, 0x12,
|
|
0x37, 0x32, 0x29, 0x2d,
|
|
0x29, 0x25, 0x2B, 0x39,
|
|
0x00, 0x01, 0x03, 0x10}, 16}, // 16 args, no delay:
|
|
{ST7735_GMCTRN1, {0x03, 0x1d, 0x07, 0x06,
|
|
0x2E, 0x2C, 0x29, 0x2D,
|
|
0x2E, 0x2E, 0x37, 0x3F,
|
|
0x00, 0x00, 0x02, 0x10}, 16}, // 16 args, no delay:
|
|
{ST7735_NORON, {0}, TFT_INIT_DELAY}, // Normal display on, no args, w/delay 10 ms delay
|
|
{ST7735_DISPON, {0}, TFT_INIT_DELAY}, // Main screen turn on, no args w/delay 100 ms delay
|
|
{0, {0}, 0xff}
|
|
};
|
|
|
|
//Initialize non-SPI GPIOs
|
|
gpio_pad_select_gpio(ST7735S_DC);
|
|
gpio_set_direction(ST7735S_DC, GPIO_MODE_OUTPUT);
|
|
|
|
#if ST7735S_USE_RST
|
|
gpio_pad_select_gpio(ST7735S_RST);
|
|
gpio_set_direction(ST7735S_RST, GPIO_MODE_OUTPUT);
|
|
|
|
//Reset the display
|
|
gpio_set_level(ST7735S_RST, 0);
|
|
vTaskDelay(100 / portTICK_RATE_MS);
|
|
gpio_set_level(ST7735S_RST, 1);
|
|
vTaskDelay(100 / portTICK_RATE_MS);
|
|
#endif
|
|
|
|
ESP_LOGI(TAG, "ST7735S initialization.");
|
|
|
|
//Send all the commands
|
|
uint16_t cmd = 0;
|
|
while (init_cmds[cmd].databytes!=0xff) {
|
|
st7735s_send_cmd(init_cmds[cmd].cmd);
|
|
st7735s_send_data(init_cmds[cmd].data, init_cmds[cmd].databytes&0x1F);
|
|
if (init_cmds[cmd].databytes & 0x80) {
|
|
vTaskDelay(100 / portTICK_RATE_MS);
|
|
}
|
|
cmd++;
|
|
}
|
|
|
|
#if (CONFIG_LV_DISPLAY_ORIENTATION == 0) || (CONFIG_LV_DISPLAY_ORIENTATION == 1)
|
|
st7735s_portrait_mode = 1;
|
|
#else
|
|
st7735s_portrait_mode = 0;
|
|
#endif
|
|
|
|
st7735s_set_orientation(CONFIG_LV_DISPLAY_ORIENTATION);
|
|
}
|
|
|
|
void st7735s_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
|
|
{
|
|
uint8_t data[4];
|
|
|
|
/*Column addresses*/
|
|
st7735s_send_cmd(0x2A);
|
|
data[0] = (area->x1 >> 8) & 0xFF;
|
|
data[1] = (area->x1 & 0xFF) + (st7735s_portrait_mode ? COLSTART : ROWSTART);
|
|
data[2] = (area->x2 >> 8) & 0xFF;
|
|
data[3] = (area->x2 & 0xFF) + (st7735s_portrait_mode ? COLSTART : ROWSTART);
|
|
st7735s_send_data(data, 4);
|
|
|
|
/*Page addresses*/
|
|
st7735s_send_cmd(0x2B);
|
|
data[0] = (area->y1 >> 8) & 0xFF;
|
|
data[1] = (area->y1 & 0xFF) + (st7735s_portrait_mode ? ROWSTART : COLSTART);
|
|
data[2] = (area->y2 >> 8) & 0xFF;
|
|
data[3] = (area->y2 & 0xFF) + (st7735s_portrait_mode ? ROWSTART : COLSTART);
|
|
st7735s_send_data(data, 4);
|
|
|
|
/*Memory write*/
|
|
st7735s_send_cmd(0x2C);
|
|
|
|
uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
|
|
st7735s_send_color((void*)color_map, size * 2);
|
|
}
|
|
|
|
void st7735s_sleep_in()
|
|
{
|
|
st7735s_send_cmd(0x10);
|
|
#ifdef CONFIG_LV_M5STICKC_HANDLE_AXP192
|
|
axp192_sleep_in();
|
|
#endif
|
|
}
|
|
|
|
void st7735s_sleep_out()
|
|
{
|
|
#ifdef CONFIG_LV_M5STICKC_HANDLE_AXP192
|
|
axp192_sleep_out();
|
|
#endif
|
|
st7735s_send_cmd(0x11);
|
|
}
|
|
|
|
/**********************
|
|
* STATIC FUNCTIONS
|
|
**********************/
|
|
|
|
static void st7735s_send_cmd(uint8_t cmd)
|
|
{
|
|
disp_wait_for_pending_transactions();
|
|
gpio_set_level(ST7735S_DC, 0); /*Command mode*/
|
|
disp_spi_send_data(&cmd, 1);
|
|
}
|
|
|
|
static void st7735s_send_data(void * data, uint16_t length)
|
|
{
|
|
disp_wait_for_pending_transactions();
|
|
gpio_set_level(ST7735S_DC, 1); /*Data mode*/
|
|
disp_spi_send_data(data, length);
|
|
}
|
|
|
|
static void st7735s_send_color(void * data, uint16_t length)
|
|
{
|
|
disp_wait_for_pending_transactions();
|
|
gpio_set_level(ST7735S_DC, 1); /*Data mode*/
|
|
disp_spi_send_colors(data, length);
|
|
}
|
|
|
|
static void st7735s_set_orientation(uint8_t orientation)
|
|
{
|
|
const char *orientation_str[] = {
|
|
"PORTRAIT", "PORTRAIT_INVERTED", "LANDSCAPE", "LANDSCAPE_INVERTED"
|
|
};
|
|
|
|
ESP_LOGD(TAG, "Display orientation: %s", orientation_str[orientation]);
|
|
|
|
/*
|
|
Portrait: 0xC8 = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST77XX_MADCTL_BGR
|
|
Landscape: 0xA8 = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST77XX_MADCTL_BGR
|
|
Remark: "inverted" is ignored here
|
|
*/
|
|
uint8_t data[] = {0xC8, 0xC8, 0xA8, 0xA8};
|
|
|
|
ESP_LOGD(TAG, "0x36 command value: 0x%02X", data[orientation]);
|
|
|
|
st7735s_send_cmd(ST7735_MADCTL);
|
|
st7735s_send_data((void *) &data[orientation], 1);
|
|
}
|
|
|
|
#ifdef CONFIG_LV_M5STICKC_HANDLE_AXP192
|
|
|
|
static void axp192_write_byte(uint8_t addr, uint8_t data)
|
|
{
|
|
err = lvgl_i2c_write(CONFIG_LV_I2C_DISPLAY_PORT, AXP192_I2C_ADDRESS, addr, &data, 1);
|
|
if (ret != ESP_OK) {
|
|
ESP_LOGE(TAG, "AXP192 send failed. code: 0x%.2X", ret);
|
|
}
|
|
}
|
|
|
|
static void axp192_init()
|
|
{
|
|
// information on how to init and use AXP192 ifor M5StickC taken from
|
|
// https://forum.m5stack.com/topic/1025/m5stickc-turn-off-screen-completely
|
|
|
|
axp192_write_byte(0x10, 0xFF); // OLED_VPP Enable
|
|
axp192_write_byte(0x28, 0xCC); // Enable LDO2&LDO3, LED&TFT 3.0V
|
|
axp192_sleep_out();
|
|
ESP_LOGI(TAG, "AXP192 initialized, power enabled for LDO2 and LDO3");
|
|
}
|
|
|
|
static void axp192_sleep_in()
|
|
{
|
|
axp192_write_byte(0x12, 0x4b);
|
|
}
|
|
|
|
static void axp192_sleep_out()
|
|
{
|
|
axp192_write_byte(0x12, 0x4d);
|
|
}
|
|
|
|
#endif
|