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Tasmota/lib/lib_display/UDisplay/uDisplay.cpp

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/*
uDisplay.cpp - universal display driver support for Tasmota
Copyright (C) 2021 Gerhard Mutz and Theo Arends
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <Arduino.h>
#include "uDisplay.h"
#define UDSP_DEBUG
const uint16_t udisp_colors[]={UDISP_BLACK,UDISP_WHITE,UDISP_RED,UDISP_GREEN,UDISP_BLUE,UDISP_CYAN,UDISP_MAGENTA,\
UDISP_YELLOW,UDISP_NAVY,UDISP_DARKGREEN,UDISP_DARKCYAN,UDISP_MAROON,UDISP_PURPLE,UDISP_OLIVE,\
UDISP_LIGHTGREY,UDISP_DARKGREY,UDISP_ORANGE,UDISP_GREENYELLOW,UDISP_PINK};
uint16_t uDisplay::GetColorFromIndex(uint8_t index) {
if (index >= sizeof(udisp_colors) / 2) index = 0;
return udisp_colors[index];
}
uint16_t uDisplay::fgcol(void) {
return fg_col;
}
uint16_t uDisplay::bgcol(void) {
return bg_col;
}
int8_t uDisplay::color_type(void) {
return col_type;
}
uDisplay::~uDisplay(void) {
if (framebuffer) {
free(framebuffer);
}
}
uDisplay::uDisplay(char *lp) : Renderer(800, 600) {
// analyse decriptor
pwr_cbp = 0;
dim_cbp = 0;
framebuffer = 0;
col_mode = 16;
sa_mode = 16;
saw_3 = 0xff;
dim_op = 0xff;
dsp_off = 0xff;
dsp_on = 0xff;
lutpsize = 0;
lutfsize = 0;
lutptime = 35;
lutftime = 350;
lut3time = 10;
ep_mode = 0;
fg_col = 1;
bg_col = 0;
splash_font = -1;
rotmap_xmin = -1;
bpanel = -1;
allcmd_mode = 0;
startline = 0xA1;
uint8_t section = 0;
dsp_ncmds = 0;
lut_num = 0;
for (uint32_t cnt = 0; cnt < 5; cnt++) {
lut_cnt[cnt] = 0;
lut_cmd[cnt] = 0xff;
}
char linebuff[128];
while (*lp) {
uint16_t llen = strlen_ln(lp);
strncpy(linebuff, lp, llen);
linebuff[llen] = 0;
lp += llen;
char *lp1 = linebuff;
if (*lp1 == '#') break;
if (*lp1 == '\n') lp1++;
while (*lp1 == ' ') lp1++;
//Serial.printf(">> %s\n",lp1);
if (*lp1 != ';') {
// check ids:
if (*lp1 == ':') {
// id line
lp1++;
section = *lp1++;
if (section == 'I') {
if (*lp1 == 'C') {
allcmd_mode = 1;
lp1++;
}
} else if (section == 'L') {
if (*lp1 >= '1' && *lp1 <= '5') {
lut_num = (*lp1 & 0x07);
lp1+=2;
lut_cmd[lut_num - 1] = next_hex(&lp1);
}
}
if (*lp1 == ',') lp1++;
}
if (*lp1 != ':' && *lp1 != '\n' && *lp1 != ' ') { // Add space char
switch (section) {
case 'H':
// header line
// SD1306,128,64,1,I2C,5a,*,*,*
str2c(&lp1, dname, sizeof(dname));
char ibuff[16];
gxs = next_val(&lp1);
setwidth(gxs);
gys = next_val(&lp1);
setheight(gys);
disp_bpp = next_val(&lp1);
bpp = abs(disp_bpp);
if (bpp == 1) {
col_type = uCOLOR_BW;
} else {
col_type = uCOLOR_COLOR;
}
str2c(&lp1, ibuff, sizeof(ibuff));
if (!strncmp(ibuff, "I2C", 3)) {
interface = _UDSP_I2C;
wire_n = 0;
if (!strncmp(ibuff, "I2C2", 4)) {
wire_n = 1;
}
i2caddr = next_hex(&lp1);
i2c_scl = next_val(&lp1);
i2c_sda = next_val(&lp1);
reset = next_val(&lp1);
section = 0;
} else if (!strncmp(ibuff, "SPI", 3)) {
interface = _UDSP_SPI;
spi_nr = next_val(&lp1);
spi_cs = next_val(&lp1);
spi_clk = next_val(&lp1);
spi_mosi = next_val(&lp1);
spi_dc = next_val(&lp1);
bpanel = next_val(&lp1);
reset = next_val(&lp1);
spi_miso = next_val(&lp1);
spi_speed = next_val(&lp1);
section = 0;
}
break;
case 'S':
splash_font = next_val(&lp1);
splash_size = next_val(&lp1);
fg_col = next_val(&lp1);
if (bpp == 16) {
fg_col = GetColorFromIndex(fg_col);
}
bg_col = next_val(&lp1);
if (bpp == 16) {
bg_col = GetColorFromIndex(bg_col);
}
splash_xp = next_val(&lp1);
splash_yp = next_val(&lp1);
break;
case 'I':
// init data
if (interface == _UDSP_I2C) {
dsp_cmds[dsp_ncmds++] = next_hex(&lp1);
if (!str2c(&lp1, ibuff, sizeof(ibuff))) {
dsp_cmds[dsp_ncmds++] = strtol(ibuff, 0, 16);
}
} else {
while (1) {
if (!str2c(&lp1, ibuff, sizeof(ibuff))) {
dsp_cmds[dsp_ncmds++] = strtol(ibuff, 0, 16);
} else {
break;
}
if (dsp_ncmds >= sizeof(dsp_cmds)) break;
}
}
break;
case 'o':
dsp_off = next_hex(&lp1);
break;
case 'O':
dsp_on = next_hex(&lp1);
break;
case 'R':
madctrl = next_hex(&lp1);
startline = next_hex(&lp1);
break;
case '0':
rot[0] = next_hex(&lp1);
x_addr_offs[0] = next_hex(&lp1);
y_addr_offs[0] = next_hex(&lp1);
rot_t[0] = next_hex(&lp1);
break;
case '1':
rot[1] = next_hex(&lp1);
x_addr_offs[1] = next_hex(&lp1);
y_addr_offs[1] = next_hex(&lp1);
rot_t[1] = next_hex(&lp1);
break;
case '2':
rot[2] = next_hex(&lp1);
x_addr_offs[2] = next_hex(&lp1);
y_addr_offs[2] = next_hex(&lp1);
rot_t[2] = next_hex(&lp1);
break;
case '3':
rot[3] = next_hex(&lp1);
x_addr_offs[3] = next_hex(&lp1);
y_addr_offs[3] = next_hex(&lp1);
rot_t[3] = next_hex(&lp1);
break;
case 'A':
if (interface == _UDSP_I2C || bpp == 1) {
saw_1 = next_hex(&lp1);
i2c_page_start = next_hex(&lp1);
i2c_page_end = next_hex(&lp1);
saw_2 = next_hex(&lp1);
i2c_col_start = next_hex(&lp1);
i2c_col_end = next_hex(&lp1);
saw_3 = next_hex(&lp1);
} else {
saw_1 = next_hex(&lp1);
saw_2 = next_hex(&lp1);
saw_3 = next_hex(&lp1);
sa_mode = next_val(&lp1);
}
break;
case 'P':
col_mode = next_val(&lp1);
break;
case 'i':
inv_off = next_hex(&lp1);
inv_on = next_hex(&lp1);
break;
case 'D':
dim_op = next_hex(&lp1);
break;
case 'L':
if (!lut_num) {
while (1) {
if (!str2c(&lp1, ibuff, sizeof(ibuff))) {
lut_full[lutfsize++] = strtol(ibuff, 0, 16);
} else {
break;
}
if (lutfsize >= LUTMAXSIZE) break;
}
} else {
uint8_t index = lut_num - 1;
while (1) {
if (!str2c(&lp1, ibuff, sizeof(ibuff))) {
lut_array[lut_cnt[index]++][index] = strtol(ibuff, 0, 16);
} else {
break;
}
if (lut_cnt[index] >= LUTMAXSIZE) break;
}
}
break;
case 'l':
while (1) {
if (!str2c(&lp1, ibuff, sizeof(ibuff))) {
lut_partial[lutpsize++] = strtol(ibuff, 0, 16);
} else {
break;
}
if (lutpsize >= LUTMAXSIZE) break;
}
break;
case 'T':
lutftime = next_val(&lp1);
lutptime = next_val(&lp1);
lut3time = next_val(&lp1);
break;
case 'B':
lvgl_param.fluslines = next_val(&lp1);
lvgl_param.data = next_val(&lp1);
break;
case 'M':
rotmap_xmin = next_val(&lp1);
rotmap_xmax = next_val(&lp1);
rotmap_ymin = next_val(&lp1);
rotmap_ymax = next_val(&lp1);
break;
}
}
}
if (*lp == '\n' || *lp == ' ') { // Add space char
lp++;
} else {
lp = strchr(lp, '\n');
if (!lp) {
lp = strchr(lp, ' ');
if (!lp) {
break;
}
}
lp++;
}
}
if (lutfsize && lutpsize) {
// 2 table mode
ep_mode = 1;
}
if (lut_cnt[0]>0 && lut_cnt[1]==lut_cnt[2] && lut_cnt[1]==lut_cnt[3] && lut_cnt[1]==lut_cnt[4]) {
// 5 table mode
ep_mode = 2;
}
#ifdef UDSP_DEBUG
Serial.printf("xs : %d\n", gxs);
Serial.printf("ys : %d\n", gys);
Serial.printf("bpp: %d\n", bpp);
if (interface == _UDSP_SPI) {
Serial.printf("Nr. : %d\n", spi_nr);
Serial.printf("CS : %d\n", spi_cs);
Serial.printf("CLK : %d\n", spi_clk);
Serial.printf("MOSI: %d\n", spi_mosi);
Serial.printf("DC : %d\n", spi_dc);
Serial.printf("BPAN: %d\n", bpanel);
Serial.printf("RES : %d\n", reset);
Serial.printf("MISO: %d\n", spi_miso);
Serial.printf("SPED: %d\n", spi_speed*1000000);
Serial.printf("Pixels: %d\n", col_mode);
Serial.printf("SaMode: %d\n", sa_mode);
Serial.printf("opts: %02x,%02x,%02x\n", saw_3, dim_op, startline);
Serial.printf("SetAddr : %x,%x,%x\n", saw_1, saw_2, saw_3);
Serial.printf("Rot 0: %x,%x - %d - %d\n", madctrl, rot[0], x_addr_offs[0], y_addr_offs[0]);
if (ep_mode == 1) {
Serial.printf("LUT_Partial : %d\n", lutpsize);
Serial.printf("LUT_Full : %d\n", lutfsize);
}
if (ep_mode == 2) {
Serial.printf("LUT_SIZE 1: %d\n", lut_cnt[0]);
Serial.printf("LUT_SIZE 2: %d\n", lut_cnt[1]);
Serial.printf("LUT_SIZE 3: %d\n", lut_cnt[2]);
Serial.printf("LUT_SIZE 4: %d\n", lut_cnt[3]);
Serial.printf("LUT_SIZE 5: %d\n", lut_cnt[4]);
Serial.printf("LUT_CMDS %02x-%02x-%02x-%02x-%02x\n", lut_cmd[0], lut_cmd[1], lut_cmd[2], lut_cmd[3], lut_cmd[4]);
}
}
if (interface == _UDSP_I2C) {
Serial.printf("Addr : %02x\n", i2caddr);
Serial.printf("SCL : %d\n", i2c_scl);
Serial.printf("SDA : %d\n", i2c_sda);
Serial.printf("SPA : %x\n", saw_1);
Serial.printf("pa_sta: %x\n", i2c_page_start);
Serial.printf("pa_end: %x\n", i2c_page_end);
Serial.printf("SCA : %x\n", saw_2);
Serial.printf("ca_sta: %x\n", i2c_col_start);
Serial.printf("pa_end: %x\n", i2c_col_end);
Serial.printf("WRA : %x\n", saw_3);
}
#endif
}
Renderer *uDisplay::Init(void) {
extern bool UsePSRAM(void);
// for any bpp below native 16 bits, we allocate a local framebuffer to copy into
if (ep_mode || bpp < 16) {
if (framebuffer) free(framebuffer);
#ifdef ESP8266
framebuffer = (uint8_t*)calloc((gxs * gys * bpp) / 8, 1);
#else
if (UsePSRAM()) {
framebuffer = (uint8_t*)heap_caps_malloc((gxs * gys * bpp) / 8, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
} else {
framebuffer = (uint8_t*)calloc((gxs * gys * bpp) / 8, 1);
}
#endif
}
if (interface == _UDSP_I2C) {
if (wire_n == 0) {
wire = &Wire;
}
#ifdef ESP32
if (wire_n == 1) {
wire = &Wire1;
}
#endif
wire->begin(i2c_sda, i2c_scl); // TODO: aren't I2C buses already initialized? Shouldn't this be moved to display driver?
#ifdef UDSP_DEBUG
Serial.printf("I2C cmds: %d\n", dsp_ncmds);
#endif
for (uint32_t cnt = 0; cnt < dsp_ncmds; cnt++) {
i2c_command(dsp_cmds[cnt]);
#ifdef UDSP_DEBUG
Serial.printf("cmd = %x\n", dsp_cmds[cnt]);
#endif
}
}
if (interface == _UDSP_SPI) {
if (bpanel >= 0) {
#ifdef ESP32
ledcSetup(ESP32_PWM_CHANNEL, 977, 8); // use 10 bits resolution like in Light
ledcAttachPin(bpanel, ESP32_PWM_CHANNEL);
ledcWrite(ESP32_PWM_CHANNEL, 8); // 38/255 correspond roughly to 50% visual brighness (with Gamma)
#else
pinMode(bpanel, OUTPUT);
digitalWrite(bpanel, HIGH);
#endif // ESP32
}
if (spi_dc >= 0) {
pinMode(spi_dc, OUTPUT);
digitalWrite(spi_dc, HIGH);
}
if (spi_cs >= 0) {
pinMode(spi_cs, OUTPUT);
digitalWrite(spi_cs, HIGH);
}
#ifdef ESP8266
if (spi_nr <= 1) {
SPI.begin();
uspi = &SPI;
} else {
pinMode(spi_clk, OUTPUT);
digitalWrite(spi_clk, LOW);
pinMode(spi_mosi, OUTPUT);
digitalWrite(spi_mosi, LOW);
}
#endif // ESP8266
#ifdef ESP32
if (spi_nr == 1) {
uspi = &SPI;
uspi->begin(spi_clk, spi_miso, spi_mosi, -1);
if (lvgl_param.use_dma) {
spi_host = VSPI_HOST;
initDMA(spi_cs);
}
} else if (spi_nr == 2) {
uspi = new SPIClass(HSPI);
uspi->begin(spi_clk, spi_miso, spi_mosi, -1);
if (lvgl_param.use_dma) {
spi_host = HSPI_HOST;
initDMA(spi_cs);
}
} else {
pinMode(spi_clk, OUTPUT);
digitalWrite(spi_clk, LOW);
pinMode(spi_mosi, OUTPUT);
digitalWrite(spi_mosi, LOW);
}
#endif // ESP32
if (reset >= 0) {
pinMode(reset, OUTPUT);
digitalWrite(reset, HIGH);
delay(50);
digitalWrite(reset, LOW);
delay(50);
digitalWrite(reset, HIGH);
delay(200);
}
spiSettings = SPISettings((uint32_t)spi_speed*1000000, MSBFIRST, SPI_MODE3);
uint16_t index = 0;
SPI_BEGIN_TRANSACTION
while (1) {
uint8_t iob;
SPI_CS_LOW
iob = dsp_cmds[index++];
spi_command(iob);
uint8_t args = dsp_cmds[index++];
#ifdef UDSP_DEBUG
Serial.printf("cmd, args %02x, %d ", iob, args&0x1f);
#endif
for (uint32_t cnt = 0; cnt < (args & 0x1f); cnt++) {
iob = dsp_cmds[index++];
#ifdef UDSP_DEBUG
Serial.printf("%02x ", iob );
#endif
if (!allcmd_mode) {
spi_data8(iob);
} else {
spi_command(iob);
}
}
SPI_CS_HIGH
#ifdef UDSP_DEBUG
Serial.printf("\n");
#endif
if (args & 0x80) { // delay after the command
uint32_t delay_ms = 0;
switch (args & 0xE0) {
case 0x80: delay_ms = 150; break;
case 0xA0: delay_ms = 10; break;
case 0xE0: delay_ms = 500; break;
}
if (delay_ms > 0) {
delay(delay_ms);
#ifdef UDSP_DEBUG
Serial.printf("delay %d ms\n", delay_ms);
#endif
}
}
if (index >= dsp_ncmds) break;
}
SPI_END_TRANSACTION
}
// must init luts on epaper
if (ep_mode) {
Init_EPD(DISPLAY_INIT_FULL);
if (ep_mode == 1) Init_EPD(DISPLAY_INIT_PARTIAL);
}
return this;
}
void uDisplay::DisplayInit(int8_t p, int8_t size, int8_t rot, int8_t font) {
if (p != DISPLAY_INIT_MODE && ep_mode) {
if (p == DISPLAY_INIT_PARTIAL) {
if (lutpsize) {
SetLut(lut_partial);
Updateframe_EPD();
delay(lutptime * 10);
}
return;
} else if (p == DISPLAY_INIT_FULL) {
if (lutfsize) {
SetLut(lut_full);
Updateframe_EPD();
}
if (ep_mode == 2) {
ClearFrame_42();
DisplayFrame_42();
}
delay(lutftime * 10);
return;
}
} else {
setRotation(rot);
invertDisplay(false);
setTextWrap(false);
cp437(true);
setTextFont(font);
setTextSize(size);
setTextColor(fg_col, bg_col);
setCursor(0,0);
if (splash_font >= 0) {
fillScreen(bg_col);
Updateframe();
}
#ifdef UDSP_DEBUG
Serial.printf("Dsp Init complete \n");
#endif
}
}
void uDisplay::spi_command(uint8_t val) {
if (spi_dc < 0) {
if (spi_nr > 2) {
if (spi_nr == 3) {
write9(val, 0);
} else {
write9_slow(val, 0);
}
} else {
hw_write9(val, 0);
}
} else {
SPI_DC_LOW
if (spi_nr > 2) {
if (spi_nr == 3) {
write8(val);
} else {
write8_slow(val);
}
} else {
uspi->write(val);
}
SPI_DC_HIGH
}
}
void uDisplay::spi_data8(uint8_t val) {
if (spi_dc < 0) {
if (spi_nr > 2) {
if (spi_nr == 3) {
write9(val, 1);
} else {
write9_slow(val, 1);
}
} else {
hw_write9(val, 1);
}
} else {
if (spi_nr > 2) {
if (spi_nr == 3) {
write8(val);
} else {
write8_slow(val);
}
} else {
uspi->write(val);
}
}
}
void uDisplay::spi_data16(uint16_t val) {
if (spi_dc < 0) {
if (spi_nr > 2) {
write9(val >> 8, 1);
write9(val, 1);
} else {
hw_write9(val >> 8, 1);
hw_write9(val, 1);
}
} else {
if (spi_nr > 2) {
write16(val);
} else {
uspi->write16(val);
}
}
}
void uDisplay::spi_data32(uint32_t val) {
if (spi_dc < 0) {
if (spi_nr > 2) {
write9(val >> 24, 1);
write9(val >> 16, 1);
write9(val >> 8, 1);
write9(val, 1);
} else {
hw_write9(val >> 24, 1);
hw_write9(val >> 16, 1);
hw_write9(val >> 8, 1);
hw_write9(val, 1);
}
} else {
if (spi_nr > 2) {
write32(val);
} else {
uspi->write32(val);
}
}
}
void uDisplay::spi_command_one(uint8_t val) {
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
spi_command(val);
SPI_CS_HIGH
SPI_END_TRANSACTION
}
void uDisplay::i2c_command(uint8_t val) {
//Serial.printf("%02x\n",val );
wire->beginTransmission(i2caddr);
wire->write(0);
wire->write(val);
wire->endTransmission();
}
#define WIRE_MAX 32
void uDisplay::Updateframe(void) {
if (ep_mode) {
Updateframe_EPD();
return;
}
if (interface == _UDSP_I2C) {
#if 0
i2c_command(saw_1);
i2c_command(i2c_page_start);
i2c_command(i2c_page_end);
i2c_command(saw_2);
i2c_command(i2c_col_start);
i2c_command(i2c_col_end);
uint16_t count = gxs * ((gys + 7) / 8);
uint8_t *ptr = framebuffer;
wire->beginTransmission(i2caddr);
i2c_command(saw_3);
uint8_t bytesOut = 1;
while (count--) {
if (bytesOut >= WIRE_MAX) {
wire->endTransmission();
wire->beginTransmission(i2caddr);
i2c_command(saw_3);
bytesOut = 1;
}
i2c_command(*ptr++);
bytesOut++;
}
wire->endTransmission();
#else
i2c_command(saw_1 | 0x0); // set low col = 0, 0x00
i2c_command(i2c_page_start | 0x0); // set hi col = 0, 0x10
i2c_command(i2c_page_end | 0x0); // set startline line #0, 0x40
uint8_t ys = gys >> 3;
uint8_t xs = gxs >> 3;
//uint8_t xs = 132 >> 3;
uint8_t m_row = saw_2;
uint8_t m_col = i2c_col_start;
uint16_t p = 0;
uint8_t i, j, k = 0;
for ( i = 0; i < ys; i++) {
// send a bunch of data in one xmission
i2c_command(0xB0 + i + m_row); //set page address
i2c_command(m_col & 0xf); //set lower column address
i2c_command(0x10 | (m_col >> 4)); //set higher column address
for ( j = 0; j < 8; j++) {
wire->beginTransmission(i2caddr);
wire->write(0x40);
for ( k = 0; k < xs; k++, p++) {
wire->write(framebuffer[p]);
}
wire->endTransmission();
}
}
#endif
}
if (interface == _UDSP_SPI) {
if (framebuffer == nullptr) { return; }
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
// below commands are not needed for SH1107
// spi_command(saw_1 | 0x0); // set low col = 0, 0x00
// spi_command(i2c_page_start | 0x0); // set hi col = 0, 0x10
// spi_command(i2c_page_end | 0x0); // set startline line #0, 0x40
uint8_t ys = gys >> 3;
uint8_t xs = gxs >> 3;
//uint8_t xs = 132 >> 3;
uint8_t m_row = saw_2;
uint8_t m_col = i2c_col_start;
// Serial.printf("m_row=%d m_col=%d xs=%d ys=%d\n", m_row, m_col, xs, ys);
uint16_t p = 0;
uint8_t i, j, k = 0;
for ( i = 0; i < ys; i++) { // i = line from 0 to ys
// send a bunch of data in one xmission
spi_command(0xB0 + i + m_row); //set page address
spi_command(m_col & 0xf); //set lower column address
spi_command(0x10 | (m_col >> 4)); //set higher column address
for ( j = 0; j < 8; j++) {
for ( k = 0; k < xs; k++, p++) {
spi_data8(framebuffer[p]);
}
}
}
SPI_CS_HIGH
SPI_END_TRANSACTION
}
}
void uDisplay::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) {
if (ep_mode) {
drawFastVLine_EPD(x, y, h, color);
return;
}
if (interface != _UDSP_SPI) {
Renderer::drawFastVLine(x, y, h, color);
return;
}
// Rudimentary clipping
if ((x >= _width) || (y >= _height)) return;
if ((y + h - 1) >= _height) h = _height - y;
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
setAddrWindow_int(x, y, 1, h);
if (col_mode == 18) {
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
while (h--) {
spi_data8(r);
spi_data8(g);
spi_data8(b);
}
} else {
while (h--) {
WriteColor(color);
}
}
SPI_CS_HIGH
SPI_END_TRANSACTION
}
void uDisplay::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) {
if (ep_mode) {
drawFastHLine_EPD(x, y, w, color);
return;
}
if (interface != _UDSP_SPI) {
Renderer::drawFastHLine(x, y, w, color);
return;
}
// Rudimentary clipping
if((x >= _width) || (y >= _height)) return;
if((x+w-1) >= _width) w = _width-x;
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
setAddrWindow_int(x, y, w, 1);
if (col_mode == 18) {
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
while (w--) {
spi_data8(r);
spi_data8(g);
spi_data8(b);
}
} else {
while (w--) {
WriteColor(color);
}
}
SPI_CS_HIGH
SPI_END_TRANSACTION
}
//#define CD_XS gxs
//#define CD_YS gys
#define CD_XS width()
#define CD_YS height()
void uDisplay::fillScreen(uint16_t color) {
fillRect(0, 0, CD_XS, CD_YS, color);
}
// fill a rectangle
void uDisplay::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) {
if (ep_mode) {
fillRect_EPD(x, y, w, h, color);
return;
}
if (interface != _UDSP_SPI) {
Renderer::fillRect(x, y, w, h, color);
return;
}
if((x >= CD_XS) || (y >= CD_YS)) return;
if((x + w - 1) >= CD_XS) w = CD_XS - x;
if((y + h - 1) >= CD_YS) h = CD_YS - y;
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
setAddrWindow_int(x, y, w, h);
if (col_mode == 18) {
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
for (y = h; y > 0; y--) {
for (x = w; x > 0; x--) {
spi_data8(r);
spi_data8(g);
spi_data8(b);
}
}
} else {
for (y = h; y > 0; y--) {
for (x = w; x > 0; x--) {
WriteColor(color);
}
}
}
SPI_CS_HIGH
SPI_END_TRANSACTION
}
/*
// pack RGB into uint32
uint32_t pack_rgb(uint32_t r, uint32_t g, uint32_t b) {
uint32_t data;
data=r<<23;
data|=g<<14;
data|=b<<5;
data|=0b10000000010000000010000000000000;
return ulswap(data);
}
// init 27 bit mode
uint32_t data=pack_rgb(r,g,b);
REG_SET_BIT(SPI_USER_REG(3), SPI_USR_MOSI);
REG_WRITE(SPI_MOSI_DLEN_REG(3), 27 - 1);
uint32_t *dp=(uint32_t*)SPI_W0_REG(3);
digitalWrite( _cs, LOW);
for(y=h; y>0; y--) {
for(x=w; x>0; x--) {
while (REG_GET_FIELD(SPI_CMD_REG(3), SPI_USR));
*dp=data;
REG_SET_BIT(SPI_CMD_REG(3), SPI_USR);
}
}
*/
void uDisplay::Splash(void) {
if (splash_font < 0) return;
if (ep_mode) {
Updateframe();
delay(lut3time * 10);
}
setTextFont(splash_font);
setTextSize(splash_size);
DrawStringAt(splash_xp, splash_yp, dname, fg_col, 0);
Updateframe();
}
void uDisplay::setAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
if (bpp != 16) {
// just save params or update frame
if (!x0 && !y0 && !x1 && !y1) {
if (!ep_mode) {
Updateframe();
}
} else {
seta_xp1 = x0;
seta_xp2 = x1;
seta_yp1 = y0;
seta_yp2 = y1;
// Serial.printf("xp1=%d xp2=%d yp1=%d yp2=%d\n", seta_xp1, seta_xp2, seta_yp1, seta_yp2);
}
return;
}
if (!x0 && !y0 && !x1 && !y1) {
SPI_CS_HIGH
SPI_END_TRANSACTION
} else {
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
setAddrWindow_int(x0, y0, x1 - x0, y1 - y0 );
}
}
#define udisp_swap(a, b) (((a) ^= (b)), ((b) ^= (a)), ((a) ^= (b))) ///< No-temp-var swap operation
void uDisplay::setAddrWindow_int(uint16_t x, uint16_t y, uint16_t w, uint16_t h) {
x += x_addr_offs[cur_rot];
y += y_addr_offs[cur_rot];
if (sa_mode != 8) {
uint32_t xa = ((uint32_t)x << 16) | (x+w-1);
uint32_t ya = ((uint32_t)y << 16) | (y+h-1);
spi_command(saw_1);
spi_data32(xa);
spi_command(saw_2);
spi_data32(ya);
if (saw_3 != 0xff) {
spi_command(saw_3); // write to RAM
}
} else {
uint16_t x2 = x + w - 1,
y2 = y + h - 1;
if (cur_rot & 1) { // Vertical address increment mode
udisp_swap(x,y);
udisp_swap(x2,y2);
}
spi_command(saw_1);
if (allcmd_mode) {
spi_data8(x);
spi_data8(x2);
} else {
spi_command(x);
spi_command(x2);
}
spi_command(saw_2);
if (allcmd_mode) {
spi_data8(y);
spi_data8(y2);
} else {
spi_command(y);
spi_command(y2);
}
if (saw_3 != 0xff) {
spi_command(saw_3); // write to RAM
}
}
}
#define RGB16_TO_MONO 0x8410
#define RGB16_SWAP_TO_MONO 0x1084
// #define CNV_B1_OR ((0x10<<11) | (0x20<<5) | 0x10)
// static inline uint8_t ulv_color_to1(uint16_t color) {
// if (color & CNV_B1_OR) {
// return 1;
// }
// else {
// return 0;
// }
/*
// this needs optimization
if (((color>>11) & 0x10) || ((color>>5) & 0x20) || (color & 0x10)) {
return 1;
}
else {
return 0;
}*/
// }
// convert to mono, these are framebuffer based
void uDisplay::pushColorsMono(uint16_t *data, uint16_t len, bool rgb16_swap) {
// pixel is white if at least one of the 3 components is above 50%
// this is tested with a simple mask, swapped if needed
uint16_t rgb16_to_mono_mask = rgb16_swap ? RGB16_SWAP_TO_MONO : RGB16_TO_MONO;
for (uint32_t y = seta_yp1; y < seta_yp2; y++) {
for (uint32_t x = seta_xp1; x < seta_xp2; x++) {
uint16_t color = *data++;
if (bpp == 1) color = (color & rgb16_to_mono_mask) ? 1 : 0;
drawPixel(x, y, color); // todo - inline the method to save speed
len--;
if (!len) return; // failsafe - exist if len (pixel number) is exhausted
}
}
}
// swap high low byte
static inline void lvgl_color_swap(uint16_t *data, uint16_t len) { for (uint32_t i = 0; i < len; i++) (data[i] = data[i] << 8 | data[i] >> 8); }
void uDisplay::pushColors(uint16_t *data, uint16_t len, boolean not_swapped) {
uint16_t color;
if (lvgl_param.swap_color) {
not_swapped = !not_swapped;
}
//Serial.printf("push %x - %d - %d - %d\n", (uint32_t)data, len, not_swapped,lvgl_param.data);
if (not_swapped == false) {
// called from LVGL bytes are swapped
if (bpp != 16) {
// lvgl_color_swap(data, len); -- no need to swap anymore, we have inverted the mask
pushColorsMono(data, len, true);
return;
}
if ( (col_mode != 18) && (spi_dc >= 0) && (spi_nr <= 2) ) {
// special version 8 bit spi I or II
#ifdef ESP8266
lvgl_color_swap(data, len);
while (len--) {
uspi->write(*data++);
}
#else
if (lvgl_param.use_dma) {
pushPixelsDMA(data, len );
} else {
uspi->writeBytes((uint8_t*)data, len * 2);
}
#endif
} else {
#ifdef ESP32
if ( (col_mode == 18) && (spi_dc >= 0) && (spi_nr <= 2) ) {
uint8_t *line = (uint8_t*)malloc(len * 3);
uint8_t *lp = line;
if (line) {
for (uint32_t cnt = 0; cnt < len; cnt++) {
color = *data++;
color = (color << 8) | (color >> 8);
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
*lp++ = r;
*lp++ = g;
*lp++ = b;
}
if (lvgl_param.use_dma) {
pushPixels3DMA(line, len );
} else {
uspi->writeBytes(line, len * 3);
}
free(line);
}
} else {
// 9 bit and others
lvgl_color_swap(data, len);
while (len--) {
WriteColor(*data++);
}
}
#endif // ESP32
#ifdef ESP8266
lvgl_color_swap(data, len);
while (len--) {
WriteColor(*data++);
}
#endif
}
} else {
// called from displaytext, no byte swap, currently no dma here
if (bpp != 16) {
pushColorsMono(data, len);
return;
}
if ( (col_mode != 18) && (spi_dc >= 0) && (spi_nr <= 2) ) {
// special version 8 bit spi I or II
#ifdef ESP8266
while (len--) {
uspi->write(*data++);
}
#else
uspi->writePixels(data, len * 2);
#endif
} else {
// 9 bit and others
while (len--) {
WriteColor(*data++);
}
}
}
}
void uDisplay::WriteColor(uint16_t color) {
if (col_mode == 18) {
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
spi_data8(r);
spi_data8(g);
spi_data8(b);
} else {
spi_data16(color);
}
}
void uDisplay::drawPixel(int16_t x, int16_t y, uint16_t color) {
if (ep_mode) {
drawPixel_EPD(x, y, color);
return;
}
if (interface != _UDSP_SPI || bpp < 16) {
Renderer::drawPixel(x, y, color);
return;
}
if ((x < 0) || (x >= _width) || (y < 0) || (y >= _height)) return;
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
setAddrWindow_int(x, y, 1, 1);
WriteColor(color);
SPI_CS_HIGH
SPI_END_TRANSACTION
}
void uDisplay::setRotation(uint8_t rotation) {
cur_rot = rotation;
if (interface != _UDSP_SPI) {
Renderer::setRotation(cur_rot);
return;
}
if (interface == _UDSP_SPI) {
if (ep_mode) {
Renderer::setRotation(cur_rot);
return;
}
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
spi_command(madctrl);
if (!allcmd_mode) {
spi_data8(rot[cur_rot]);
} else {
spi_command(rot[cur_rot]);
}
if ((sa_mode == 8) && !allcmd_mode) {
spi_command(startline);
spi_data8((cur_rot < 2) ? height() : 0);
}
SPI_CS_HIGH
SPI_END_TRANSACTION
}
switch (rotation) {
case 0:
_width = gxs;
_height = gys;
break;
case 1:
_width = gys;
_height = gxs;
break;
case 2:
_width = gxs;
_height = gys;
break;
case 3:
_width = gys;
_height = gxs;
break;
}
}
void udisp_bpwr(uint8_t on);
void uDisplay::DisplayOnff(int8_t on) {
if (ep_mode) {
return;
}
if (pwr_cbp) {
pwr_cbp(on);
}
// udisp_bpwr(on);
if (interface == _UDSP_I2C) {
if (on) {
i2c_command(dsp_on);
} else {
i2c_command(dsp_off);
}
} else {
if (on) {
if (dsp_on != 0xff) spi_command_one(dsp_on);
if (bpanel >= 0) {
#ifdef ESP32
ledcWrite(ESP32_PWM_CHANNEL, dimmer8_gamma);
#else
digitalWrite(bpanel, HIGH);
#endif
}
} else {
if (dsp_off != 0xff) spi_command_one(dsp_off);
if (bpanel >= 0) {
#ifdef ESP32
ledcWrite(ESP32_PWM_CHANNEL, 0);
#else
digitalWrite(bpanel, LOW);
#endif
}
}
}
}
void uDisplay::invertDisplay(boolean i) {
if (ep_mode) {
return;
}
if (interface == _UDSP_SPI) {
if (i) {
spi_command_one(inv_on);
} else {
spi_command_one(inv_off);
}
}
if (interface == _UDSP_I2C) {
if (i) {
i2c_command(inv_on);
} else {
i2c_command(inv_off);
}
}
}
void udisp_dimm(uint8_t dim);
// input value is 0..15
// void uDisplay::dim(uint8_t dim) {
// dim8(((uint32_t)dim * 255) / 15);
// }
// dim is 0..255
void uDisplay::dim8(uint8_t dim, uint8_t dim_gamma) { // dimmer with 8 bits resolution, 0..255. Gamma correction must be done by caller
dimmer8 = dim;
dimmer8_gamma = dim_gamma;
if (ep_mode) {
return;
}
#ifdef ESP32 // TODO should we also add a ESP8266 version for bpanel?
if (bpanel >= 0) { // is the BaclPanel GPIO configured
ledcWrite(ESP32_PWM_CHANNEL, dimmer8_gamma);
} else if (dim_cbp) {
dim_cbp(dim);
}
#endif
if (interface == _UDSP_SPI) {
if (dim_op != 0xff) { // send SPI command if dim configured
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
spi_command(dim_op);
spi_data8(dimmer8);
SPI_CS_HIGH
SPI_END_TRANSACTION
}
}
}
// the cases are PSEUDO_OPCODES from MODULE_DESCRIPTOR
// and may be exapnded with more opcodes
void uDisplay::TS_RotConvert(int16_t *x, int16_t *y) {
int16_t temp;
if (rot_t[cur_rot] & 0x80) {
temp = *y;
*y = *x;
*x = temp;
}
if (rotmap_xmin >= 0) {
*y = map(*y, rotmap_ymin, rotmap_ymax, 0, gys);
*x = map(*x, rotmap_xmin, rotmap_xmax, 0, gxs);
*x = constrain(*x, 0, gxs);
*y = constrain(*y, 0, gys);
}
// *x = constrain(*x, 0, gxs);
// *y = constrain(*y, 0, gys);
//Serial.printf("rot 1 %d - %d\n",*x,*y );
switch (rot_t[cur_rot] & 0xf) {
case 0:
break;
case 1:
temp = *y;
*y = height() - *x;
*x = temp;
break;
case 2:
*x = width() - *x;
*y = height() - *y;
break;
case 3:
temp = *y;
*y = *x;
*x = width() - temp;
break;
case 4:
*x = width() - *x;
break;
case 5:
*y = height() - *y;
break;
}
//Serial.printf("rot 2 %d - %d\n",*x,*y );
}
uint8_t uDisplay::strlen_ln(char *str) {
for (uint32_t cnt = 0; cnt < 256; cnt++) {
if (!str[cnt] || str[cnt] == '\n' || str[cnt] == ' ') return cnt;
}
return 0;
}
char *uDisplay::devname(void) {
return dname;
}
uint32_t uDisplay::str2c(char **sp, char *vp, uint32_t len) {
char *lp = *sp;
if (len) len--;
char *cp = strchr(lp, ',');
if (cp) {
while (1) {
if (*lp == ',') {
*vp = 0;
*sp = lp + 1;
return 0;
}
if (len) {
*vp++ = *lp++;
len--;
} else {
lp++;
}
}
} else {
uint8_t slen = strlen(lp);
if (slen) {
strlcpy(vp, *sp, len);
*sp = lp + slen;
return 0;
}
}
return 1;
}
int32_t uDisplay::next_val(char **sp) {
char ibuff[16];
if (!str2c(sp, ibuff, sizeof(ibuff))) {
return atoi(ibuff);
}
return 0xff;
}
uint32_t uDisplay::next_hex(char **sp) {
char ibuff[16];
if (!str2c(sp, ibuff, sizeof(ibuff))) {
return strtol(ibuff, 0, 16);
}
return 0xff;
}
#ifdef ESP32
#include "soc/spi_reg.h"
#include "soc/spi_struct.h"
#include "esp32-hal-spi.h"
#include "esp32-hal.h"
#include "soc/spi_struct.h"
// since ardunio transferBits ia completely disfunctional
// we use our own hardware driver for 9 bit spi
void uDisplay::hw_write9(uint8_t val, uint8_t dc) {
uint32_t regvalue = val >> 1;
if (dc) regvalue |= 0x80;
else regvalue &= 0x7f;
if (val & 1) regvalue |= 0x8000;
REG_SET_BIT(SPI_USER_REG(3), SPI_USR_MOSI);
REG_WRITE(SPI_MOSI_DLEN_REG(3), 9 - 1);
uint32_t *dp = (uint32_t*)SPI_W0_REG(3);
*dp = regvalue;
REG_SET_BIT(SPI_CMD_REG(3), SPI_USR);
while (REG_GET_FIELD(SPI_CMD_REG(3), SPI_USR));
}
#else
#include "spi_register.h"
void uDisplay::hw_write9(uint8_t val, uint8_t dc) {
uint32_t regvalue;
uint8_t bytetemp;
if (!dc) {
bytetemp = (val>> 1) & 0x7f;
} else {
bytetemp = (val >> 1) | 0x80;
}
regvalue = ((8 & SPI_USR_COMMAND_BITLEN) << SPI_USR_COMMAND_BITLEN_S) | ((uint32)bytetemp); //configure transmission variable,9bit transmission length and first 8 command bit
if (val & 0x01) regvalue |= BIT15; //write the 9th bit
while (READ_PERI_REG(SPI_CMD(1)) & SPI_USR); //waiting for spi module available
WRITE_PERI_REG(SPI_USER2(1), regvalue); //write command and command length into spi reg
SET_PERI_REG_MASK(SPI_CMD(1), SPI_USR); //transmission start
}
#endif
#define USECACHE ICACHE_RAM_ATTR
// slow software spi needed for displays with max 10 Mhz clck
void USECACHE uDisplay::write8(uint8_t val) {
for (uint8_t bit = 0x80; bit; bit >>= 1) {
GPIO_CLR(spi_clk);
if (val & bit) GPIO_SET(spi_mosi);
else GPIO_CLR(spi_mosi);
GPIO_SET(spi_clk);
}
}
void uDisplay::write8_slow(uint8_t val) {
for (uint8_t bit = 0x80; bit; bit >>= 1) {
GPIO_CLR_SLOW(spi_clk);
if (val & bit) GPIO_SET_SLOW(spi_mosi);
else GPIO_CLR_SLOW(spi_mosi);
GPIO_SET_SLOW(spi_clk);
}
}
void USECACHE uDisplay::write9(uint8_t val, uint8_t dc) {
GPIO_CLR(spi_clk);
if (dc) GPIO_SET(spi_mosi);
else GPIO_CLR(spi_mosi);
GPIO_SET(spi_clk);
for (uint8_t bit = 0x80; bit; bit >>= 1) {
GPIO_CLR(spi_clk);
if (val & bit) GPIO_SET(spi_mosi);
else GPIO_CLR(spi_mosi);
GPIO_SET(spi_clk);
}
}
void uDisplay::write9_slow(uint8_t val, uint8_t dc) {
GPIO_CLR_SLOW(spi_clk);
if (dc) GPIO_SET_SLOW(spi_mosi);
else GPIO_CLR_SLOW(spi_mosi);
GPIO_SET_SLOW(spi_clk);
for (uint8_t bit = 0x80; bit; bit >>= 1) {
GPIO_CLR_SLOW(spi_clk);
if (val & bit) GPIO_SET_SLOW(spi_mosi);
else GPIO_CLR_SLOW(spi_mosi);
GPIO_SET_SLOW(spi_clk);
}
}
void USECACHE uDisplay::write16(uint16_t val) {
for (uint16_t bit = 0x8000; bit; bit >>= 1) {
GPIO_CLR(spi_clk);
if (val & bit) GPIO_SET(spi_mosi);
else GPIO_CLR(spi_mosi);
GPIO_SET(spi_clk);
}
}
void USECACHE uDisplay::write32(uint32_t val) {
for (uint32_t bit = 0x80000000; bit; bit >>= 1) {
GPIO_CLR(spi_clk);
if (val & bit) GPIO_SET(spi_mosi);
else GPIO_CLR(spi_mosi);
GPIO_SET(spi_clk);
}
}
// epaper section
// EPD2IN9 commands
#define DRIVER_OUTPUT_CONTROL 0x01
#define BOOSTER_SOFT_START_CONTROL 0x0C
#define GATE_SCAN_START_POSITION 0x0F
#define DEEP_SLEEP_MODE 0x10
#define DATA_ENTRY_MODE_SETTING 0x11
#define SW_RESET 0x12
#define TEMPERATURE_SENSOR_CONTROL 0x1A
#define MASTER_ACTIVATION 0x20
#define DISPLAY_UPDATE_CONTROL_1 0x21
#define DISPLAY_UPDATE_CONTROL_2 0x22
#define WRITE_RAM 0x24
#define WRITE_VCOM_REGISTER 0x2C
#define WRITE_LUT_REGISTER 0x32
#define SET_DUMMY_LINE_PERIOD 0x3A
#define SET_GATE_TIME 0x3B
#define BORDER_WAVEFORM_CONTROL 0x3C
#define SET_RAM_X_ADDRESS_START_END_POSITION 0x44
#define SET_RAM_Y_ADDRESS_START_END_POSITION 0x45
#define SET_RAM_X_ADDRESS_COUNTER 0x4E
#define SET_RAM_Y_ADDRESS_COUNTER 0x4F
#define TERMINATE_FRAME_READ_WRITE 0xFF
void uDisplay::spi_data8_EPD(uint8_t val) {
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
spi_data8(val);
SPI_CS_HIGH
SPI_END_TRANSACTION
}
void uDisplay::spi_command_EPD(uint8_t val) {
SPI_BEGIN_TRANSACTION
SPI_CS_LOW
spi_command(val);
SPI_CS_HIGH
SPI_END_TRANSACTION
}
void uDisplay::Init_EPD(int8_t p) {
if (p == DISPLAY_INIT_PARTIAL) {
if (lutpsize) {
SetLut(lut_partial);
}
} else {
if (lutfsize) {
SetLut(lut_full);
}
if (lut_cnt[0]) {
SetLuts();
}
}
if (ep_mode == 1) {
ClearFrameMemory(0xFF);
Updateframe_EPD();
} else {
ClearFrame_42();
}
if (p == DISPLAY_INIT_PARTIAL) {
delay(lutptime * 10);
} else {
delay(lutftime * 10);
}
}
void uDisplay::ClearFrameMemory(unsigned char color) {
SetMemoryArea(0, 0, gxs - 1, gys - 1);
SetMemoryPointer(0, 0);
spi_command_EPD(WRITE_RAM);
/* send the color data */
for (int i = 0; i < gxs / 8 * gys; i++) {
spi_data8_EPD(color);
}
}
void uDisplay::SetLuts(void) {
uint8_t index, count;
for (index = 0; index < 5; index++) {
spi_command_EPD(lut_cmd[index]); //vcom
for (count = 0; count < lut_cnt[index]; count++) {
spi_data8_EPD(lut_array[count][index]);
}
}
}
void uDisplay::DisplayFrame_42(void) {
uint16_t Width, Height;
Width = (gxs % 8 == 0) ? (gxs / 8 ): (gxs / 8 + 1);
Height = gys;
spi_command_EPD(saw_2);
for (uint16_t j = 0; j < Height; j++) {
for (uint16_t i = 0; i < Width; i++) {
spi_data8_EPD(framebuffer[i + j * Width] ^ 0xff);
}
}
spi_command_EPD(saw_3);
delay(100);
Serial.printf("EPD Diplayframe\n");
}
void uDisplay::ClearFrame_42(void) {
uint16_t Width, Height;
Width = (gxs % 8 == 0)? (gxs / 8 ): (gxs / 8 + 1);
Height = gys;
spi_command_EPD(saw_1);
for (uint16_t j = 0; j < Height; j++) {
for (uint16_t i = 0; i < Width; i++) {
spi_data8_EPD(0xFF);
}
}
spi_command_EPD(saw_2);
for (uint16_t j = 0; j < Height; j++) {
for (uint16_t i = 0; i < Width; i++) {
spi_data8_EPD(0xFF);
}
}
spi_command_EPD(saw_3);
delay(100);
Serial.printf("EPD Clearframe\n");
}
void uDisplay::SetLut(const unsigned char* lut) {
spi_command_EPD(WRITE_LUT_REGISTER);
/* the length of look-up table is 30 bytes */
for (int i = 0; i < lutfsize; i++) {
spi_data8_EPD(lut[i]);
}
}
void uDisplay::Updateframe_EPD(void) {
if (ep_mode == 1) {
SetFrameMemory(framebuffer, 0, 0, gxs, gys);
DisplayFrame_29();
} else {
DisplayFrame_42();
}
}
void uDisplay::DisplayFrame_29(void) {
spi_command_EPD(DISPLAY_UPDATE_CONTROL_2);
spi_data8_EPD(0xC4);
spi_command_EPD(MASTER_ACTIVATION);
spi_data8_EPD(TERMINATE_FRAME_READ_WRITE);
}
void uDisplay::SetMemoryArea(int x_start, int y_start, int x_end, int y_end) {
spi_command_EPD(SET_RAM_X_ADDRESS_START_END_POSITION);
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
spi_data8_EPD((x_start >> 3) & 0xFF);
spi_data8_EPD((x_end >> 3) & 0xFF);
spi_command_EPD(SET_RAM_Y_ADDRESS_START_END_POSITION);
spi_data8_EPD(y_start & 0xFF);
spi_data8_EPD((y_start >> 8) & 0xFF);
spi_data8_EPD(y_end & 0xFF);
spi_data8_EPD((y_end >> 8) & 0xFF);
}
void uDisplay::SetFrameMemory(const unsigned char* image_buffer) {
SetMemoryArea(0, 0, gxs - 1, gys - 1);
SetMemoryPointer(0, 0);
spi_command_EPD(WRITE_RAM);
/* send the image data */
for (int i = 0; i < gxs / 8 * gys; i++) {
spi_data8_EPD(image_buffer[i] ^ 0xff);
}
}
void uDisplay::SetMemoryPointer(int x, int y) {
spi_command_EPD(SET_RAM_X_ADDRESS_COUNTER);
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
spi_data8_EPD((x >> 3) & 0xFF);
spi_command_EPD(SET_RAM_Y_ADDRESS_COUNTER);
spi_data8_EPD(y & 0xFF);
spi_data8_EPD((y >> 8) & 0xFF);
}
void uDisplay::SetFrameMemory(
const unsigned char* image_buffer,
uint16_t x,
uint16_t y,
uint16_t image_width,
uint16_t image_height
) {
uint16_t x_end;
uint16_t y_end;
if (
image_buffer == NULL ||
x < 0 || image_width < 0 ||
y < 0 || image_height < 0
) {
return;
}
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
x &= 0xFFF8;
image_width &= 0xFFF8;
if (x + image_width >= gxs) {
x_end = gxs - 1;
} else {
x_end = x + image_width - 1;
}
if (y + image_height >= gys) {
y_end = gys - 1;
} else {
y_end = y + image_height - 1;
}
if (!x && !y && image_width == gxs && image_height == gys) {
SetFrameMemory(image_buffer);
return;
}
SetMemoryArea(x, y, x_end, y_end);
SetMemoryPointer(x, y);
spi_command_EPD(WRITE_RAM);
/* send the image data */
for (uint16_t j = 0; j < y_end - y + 1; j++) {
for (uint16_t i = 0; i < (x_end - x + 1) / 8; i++) {
spi_data8_EPD(image_buffer[i + j * (image_width / 8)]^0xff);
}
}
}
#define IF_INVERT_COLOR 1
#define renderer_swap(a, b) { int16_t t = a; a = b; b = t; }
/**
* @brief: this draws a pixel by absolute coordinates.
* this function won't be affected by the rotate parameter.
* we must use this for epaper because these displays have a strange and different bit pattern
*/
void uDisplay::DrawAbsolutePixel(int x, int y, int16_t color) {
int16_t w = width(), h = height();
if (cur_rot == 1 || cur_rot == 3) {
renderer_swap(w, h);
}
if (x < 0 || x >= w || y < 0 || y >= h) {
return;
}
if (IF_INVERT_COLOR) {
if (color) {
framebuffer[(x + y * w) / 8] |= 0x80 >> (x % 8);
} else {
framebuffer[(x + y * w) / 8] &= ~(0x80 >> (x % 8));
}
} else {
if (color) {
framebuffer[(x + y * w) / 8] &= ~(0x80 >> (x % 8));
} else {
framebuffer[(x + y * w) / 8] |= 0x80 >> (x % 8);
}
}
}
void uDisplay::drawPixel_EPD(int16_t x, int16_t y, uint16_t color) {
if (!framebuffer) return;
if ((x < 0) || (x >= width()) || (y < 0) || (y >= height()))
return;
// check rotation, move pixel around if necessary
switch (cur_rot) {
case 1:
renderer_swap(x, y);
x = gxs - x - 1;
break;
case 2:
x = gxs - x - 1;
y = gys - y - 1;
break;
case 3:
renderer_swap(x, y);
y = gys - y - 1;
break;
}
// x is which column
DrawAbsolutePixel(x, y, color);
}
void uDisplay::fillRect_EPD(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) {
for (uint32_t yp = y; yp < y + h; yp++) {
for (uint32_t xp = x; xp < x + w; xp++) {
drawPixel_EPD(xp , yp , color);
}
}
}
void uDisplay::drawFastVLine_EPD(int16_t x, int16_t y, int16_t h, uint16_t color) {
while (h--) {
drawPixel_EPD(x , y , color);
y++;
}
}
void uDisplay::drawFastHLine_EPD(int16_t x, int16_t y, int16_t w, uint16_t color) {
while (w--) {
drawPixel_EPD(x , y , color);
x++;
}
}
void uDisplay::beginTransaction(SPISettings s) {
#ifdef ESP32
if (lvgl_param.use_dma) {
dmaWait();
} else {
uspi->beginTransaction(s);
}
#else
uspi->beginTransaction(s);
#endif
}
void uDisplay::endTransaction(void) {
#ifdef ESP32
if (lvgl_param.use_dma) {
dmaBusy();
} else {
uspi->endTransaction();
}
#else
uspi->endTransaction();
#endif
}
// ESP 32 DMA section , derived from TFT_eSPI
#ifdef ESP32
/***************************************************************************************
** Function name: initDMA
** Description: Initialise the DMA engine - returns true if init OK
***************************************************************************************/
bool uDisplay::initDMA(bool ctrl_cs)
{
if (DMA_Enabled) return false;
esp_err_t ret;
spi_bus_config_t buscfg = {
.mosi_io_num = spi_mosi,
.miso_io_num = -1,
.sclk_io_num = spi_clk,
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = width() * height() * 2 + 8, // TFT screen size
.flags = 0,
.intr_flags = 0
};
int8_t pin = -1;
if (ctrl_cs) pin = spi_cs;
spi_device_interface_config_t devcfg = {
.command_bits = 0,
.address_bits = 0,
.dummy_bits = 0,
.mode = SPI_MODE3,
.duty_cycle_pos = 0,
.cs_ena_pretrans = 0,
.cs_ena_posttrans = 0,
.clock_speed_hz = spi_speed*1000000,
.input_delay_ns = 0,
.spics_io_num = pin,
.flags = SPI_DEVICE_NO_DUMMY, //0,
.queue_size = 1,
.pre_cb = 0, //dc_callback, //Callback to handle D/C line
.post_cb = 0
};
ret = spi_bus_initialize(spi_host, &buscfg, 1);
ESP_ERROR_CHECK(ret);
ret = spi_bus_add_device(spi_host, &devcfg, &dmaHAL);
ESP_ERROR_CHECK(ret);
DMA_Enabled = true;
spiBusyCheck = 0;
return true;
}
/***************************************************************************************
** Function name: deInitDMA
** Description: Disconnect the DMA engine from SPI
***************************************************************************************/
void uDisplay::deInitDMA(void) {
if (!DMA_Enabled) return;
spi_bus_remove_device(dmaHAL);
spi_bus_free(spi_host);
DMA_Enabled = false;
}
/***************************************************************************************
** Function name: dmaBusy
** Description: Check if DMA is busy
***************************************************************************************/
bool uDisplay::dmaBusy(void) {
if (!DMA_Enabled || !spiBusyCheck) return false;
spi_transaction_t *rtrans;
esp_err_t ret;
uint8_t checks = spiBusyCheck;
for (int i = 0; i < checks; ++i) {
ret = spi_device_get_trans_result(dmaHAL, &rtrans, 0);
if (ret == ESP_OK) spiBusyCheck--;
}
//Serial.print("spiBusyCheck=");Serial.println(spiBusyCheck);
if (spiBusyCheck == 0) return false;
return true;
}
/***************************************************************************************
** Function name: dmaWait
** Description: Wait until DMA is over (blocking!)
***************************************************************************************/
void uDisplay::dmaWait(void) {
if (!DMA_Enabled || !spiBusyCheck) return;
spi_transaction_t *rtrans;
esp_err_t ret;
for (int i = 0; i < spiBusyCheck; ++i) {
ret = spi_device_get_trans_result(dmaHAL, &rtrans, portMAX_DELAY);
assert(ret == ESP_OK);
}
spiBusyCheck = 0;
}
/***************************************************************************************
** Function name: pushPixelsDMA
** Description: Push pixels to TFT (len must be less than 32767)
***************************************************************************************/
// This will byte swap the original image if setSwapBytes(true) was called by sketch.
void uDisplay::pushPixelsDMA(uint16_t* image, uint32_t len) {
if ((len == 0) || (!DMA_Enabled)) return;
dmaWait();
esp_err_t ret;
memset(&trans, 0, sizeof(spi_transaction_t));
trans.user = (void *)1;
trans.tx_buffer = image; //finally send the line data
trans.length = len * 16; //Data length, in bits
trans.flags = 0; //SPI_TRANS_USE_TXDATA flag
ret = spi_device_queue_trans(dmaHAL, &trans, portMAX_DELAY);
assert(ret == ESP_OK);
spiBusyCheck++;
}
/***************************************************************************************
** Function name: pushPixelsDMA
** Description: Push pixels to TFT (len must be less than 32767)
***************************************************************************************/
// This will byte swap the original image if setSwapBytes(true) was called by sketch.
void uDisplay::pushPixels3DMA(uint8_t* image, uint32_t len) {
if ((len == 0) || (!DMA_Enabled)) return;
dmaWait();
esp_err_t ret;
memset(&trans, 0, sizeof(spi_transaction_t));
trans.user = (void *)1;
trans.tx_buffer = image; //finally send the line data
trans.length = len * 24; //Data length, in bits
trans.flags = 0; //SPI_TRANS_USE_TXDATA flag
ret = spi_device_queue_trans(dmaHAL, &trans, portMAX_DELAY);
assert(ret == ESP_OK);
spiBusyCheck++;
}
#endif // ESP32
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