|
- /*
- * Author: LoBo (loboris@gmail.com, loboris.github)
- *
- * Module supporting SPI TFT displays based on ILI9341 & ILI9488 controllers
- *
- * HIGH SPEED LOW LEVEL DISPLAY FUNCTIONS
- * USING DIRECT or DMA SPI TRANSFER MODEs
- *
- */
-
- #include <string.h>
- #include "tftspi.h"
- #include "freertos/task.h"
- #include "soc/spi_reg.h"
- #include "driver/gpio.h"
-
-
- // ====================================================
- // ==== Global variables, default values ==============
-
- // Converts colors to grayscale if set to 1
- uint8_t tft_gray_scale = 0;
- // Spi clock for reading data from display memory in Hz
- uint32_t tft_max_rdclock = 8000000;
-
- // Default display dimensions
- int tft_width = DEFAULT_TFT_DISPLAY_WIDTH;
- int tft_height = DEFAULT_TFT_DISPLAY_HEIGHT;
-
- // Display type, DISP_TYPE_ILI9488 or DISP_TYPE_ILI9341
- uint8_t tft_disp_type = DEFAULT_DISP_TYPE;
-
- // Spi device handles for display and touch screen
- spi_lobo_device_handle_t tft_disp_spi = NULL;
- spi_lobo_device_handle_t tft_ts_spi = NULL;
-
- // ====================================================
-
-
- static color_t *trans_cline = NULL;
- static uint8_t _dma_sending = 0;
-
- // RGB to GRAYSCALE constants
- // 0.2989 0.5870 0.1140
- #define GS_FACT_R 0.2989
- #define GS_FACT_G 0.4870
- #define GS_FACT_B 0.2140
-
-
-
- // ==== Functions =====================
-
- //------------------------------------------------------
- esp_err_t IRAM_ATTR wait_trans_finish(uint8_t free_line)
- {
- // Wait for SPI bus ready
- while (tft_disp_spi->host->hw->cmd.usr);
- if ((free_line) && (trans_cline)) {
- free(trans_cline);
- trans_cline = NULL;
- }
- if (_dma_sending) {
- //Tell common code DMA workaround that our DMA channel is idle. If needed, the code will do a DMA reset.
- if (tft_disp_spi->host->dma_chan) spi_lobo_dmaworkaround_idle(tft_disp_spi->host->dma_chan);
-
- // Reset DMA
- tft_disp_spi->host->hw->dma_conf.val |= SPI_OUT_RST|SPI_IN_RST|SPI_AHBM_RST|SPI_AHBM_FIFO_RST;
- tft_disp_spi->host->hw->dma_out_link.start=0;
- tft_disp_spi->host->hw->dma_in_link.start=0;
- tft_disp_spi->host->hw->dma_conf.val &= ~(SPI_OUT_RST|SPI_IN_RST|SPI_AHBM_RST|SPI_AHBM_FIFO_RST);
- tft_disp_spi->host->hw->dma_conf.out_data_burst_en=1;
- _dma_sending = 0;
- }
- return ESP_OK;
- }
-
- //-------------------------------
- esp_err_t IRAM_ATTR disp_select()
- {
- wait_trans_finish(1);
- return spi_lobo_device_select(tft_disp_spi, 0);
- }
-
- //---------------------------------
- esp_err_t IRAM_ATTR disp_deselect()
- {
- wait_trans_finish(1);
- return spi_lobo_device_deselect(tft_disp_spi);
- }
-
- //---------------------------------------------------------------------------------------------------
- static void IRAM_ATTR _spi_transfer_start(spi_lobo_device_handle_t spi_dev, int wrbits, int rdbits) {
- // Load send buffer
- spi_dev->host->hw->user.usr_mosi_highpart = 0;
- spi_dev->host->hw->mosi_dlen.usr_mosi_dbitlen = wrbits-1;
- spi_dev->host->hw->user.usr_mosi = 1;
- if (rdbits) {
- spi_dev->host->hw->miso_dlen.usr_miso_dbitlen = rdbits;
- spi_dev->host->hw->user.usr_miso = 1;
- }
- else {
- spi_dev->host->hw->miso_dlen.usr_miso_dbitlen = 0;
- spi_dev->host->hw->user.usr_miso = 0;
- }
- // Start transfer
- spi_dev->host->hw->cmd.usr = 1;
- // Wait for SPI bus ready
- while (spi_dev->host->hw->cmd.usr);
- }
-
- // Send 1 byte display command, display must be selected
- //------------------------------------------------
- void IRAM_ATTR disp_spi_transfer_cmd(int8_t cmd) {
- // Wait for SPI bus ready
- while (tft_disp_spi->host->hw->cmd.usr);
-
- // Set DC to 0 (command mode);
- gpio_set_level(PIN_NUM_DC, 0);
-
- tft_disp_spi->host->hw->data_buf[0] = (uint32_t)cmd;
- _spi_transfer_start(tft_disp_spi, 8, 0);
- }
-
- // Send command with data to display, display must be selected
- //----------------------------------------------------------------------------------
- void IRAM_ATTR disp_spi_transfer_cmd_data(int8_t cmd, uint8_t *data, uint32_t len) {
- // Wait for SPI bus ready
- while (tft_disp_spi->host->hw->cmd.usr);
-
- // Set DC to 0 (command mode);
- gpio_set_level(PIN_NUM_DC, 0);
-
- tft_disp_spi->host->hw->data_buf[0] = (uint32_t)cmd;
- _spi_transfer_start(tft_disp_spi, 8, 0);
-
- if ((len == 0) || (data == NULL)) return;
-
- // Set DC to 1 (data mode);
- gpio_set_level(PIN_NUM_DC, 1);
-
- uint8_t idx=0, bidx=0;
- uint32_t bits=0;
- uint32_t count=0;
- uint32_t wd = 0;
- while (count < len) {
- // get data byte from buffer
- wd |= (uint32_t)data[count] << bidx;
- count++;
- bits += 8;
- bidx += 8;
- if (count == len) {
- tft_disp_spi->host->hw->data_buf[idx] = wd;
- break;
- }
- if (bidx == 32) {
- tft_disp_spi->host->hw->data_buf[idx] = wd;
- idx++;
- bidx = 0;
- wd = 0;
- }
- if (idx == 16) {
- // SPI buffer full, send data
- _spi_transfer_start(tft_disp_spi, bits, 0);
-
- bits = 0;
- idx = 0;
- bidx = 0;
- }
- }
- if (bits > 0) _spi_transfer_start(tft_disp_spi, bits, 0);
- }
-
- // Set the address window for display write & read commands, display must be selected
- //---------------------------------------------------------------------------------------------------
- static void IRAM_ATTR disp_spi_transfer_addrwin(uint16_t x1, uint16_t x2, uint16_t y1, uint16_t y2) {
- uint32_t wd;
-
- taskDISABLE_INTERRUPTS();
- // Wait for SPI bus ready
- while (tft_disp_spi->host->hw->cmd.usr);
- gpio_set_level(PIN_NUM_DC, 0);
-
- tft_disp_spi->host->hw->data_buf[0] = (uint32_t)TFT_CASET;
- tft_disp_spi->host->hw->user.usr_mosi_highpart = 0;
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = 7;
- tft_disp_spi->host->hw->user.usr_mosi = 1;
- tft_disp_spi->host->hw->miso_dlen.usr_miso_dbitlen = 0;
- tft_disp_spi->host->hw->user.usr_miso = 0;
-
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
-
- wd = (uint32_t)(x1>>8);
- wd |= (uint32_t)(x1&0xff) << 8;
- wd |= (uint32_t)(x2>>8) << 16;
- wd |= (uint32_t)(x2&0xff) << 24;
-
- while (tft_disp_spi->host->hw->cmd.usr); // wait transfer end
- gpio_set_level(PIN_NUM_DC, 1);
- tft_disp_spi->host->hw->data_buf[0] = wd;
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = 31;
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
-
- while (tft_disp_spi->host->hw->cmd.usr);
- gpio_set_level(PIN_NUM_DC, 0);
- tft_disp_spi->host->hw->data_buf[0] = (uint32_t)TFT_PASET;
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = 7;
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
-
- wd = (uint32_t)(y1>>8);
- wd |= (uint32_t)(y1&0xff) << 8;
- wd |= (uint32_t)(y2>>8) << 16;
- wd |= (uint32_t)(y2&0xff) << 24;
-
- while (tft_disp_spi->host->hw->cmd.usr);
- gpio_set_level(PIN_NUM_DC, 1);
-
- tft_disp_spi->host->hw->data_buf[0] = wd;
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = 31;
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
- while (tft_disp_spi->host->hw->cmd.usr);
- taskENABLE_INTERRUPTS();
- }
-
- // Convert color to gray scale
- //----------------------------------------------
- static color_t IRAM_ATTR color2gs(color_t color)
- {
- color_t _color;
- float gs_clr = GS_FACT_R * color.r + GS_FACT_G * color.g + GS_FACT_B * color.b;
- if (gs_clr > 255) gs_clr = 255;
-
- _color.r = (uint8_t)gs_clr;
- _color.g = (uint8_t)gs_clr;
- _color.b = (uint8_t)gs_clr;
-
- return _color;
- }
-
- // Set display pixel at given coordinates to given color
- //------------------------------------------------------------------------
- void IRAM_ATTR drawPixel(int16_t x, int16_t y, color_t color, uint8_t sel)
- {
- if (!(tft_disp_spi->cfg.flags & LB_SPI_DEVICE_HALFDUPLEX)) return;
-
- if (sel) {
- if (disp_select()) return;
- }
- else wait_trans_finish(1);
-
- uint32_t wd = 0;
- color_t _color = color;
- if (tft_gray_scale) _color = color2gs(color);
-
- taskDISABLE_INTERRUPTS();
- disp_spi_transfer_addrwin(x, x+1, y, y+1);
-
- // Send RAM WRITE command
- gpio_set_level(PIN_NUM_DC, 0);
- tft_disp_spi->host->hw->data_buf[0] = (uint32_t)TFT_RAMWR;
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = 7;
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
- while (tft_disp_spi->host->hw->cmd.usr); // Wait for SPI bus ready
-
- wd = (uint32_t)_color.r;
- wd |= (uint32_t)_color.g << 8;
- wd |= (uint32_t)_color.b << 16;
-
- // Set DC to 1 (data mode);
- gpio_set_level(PIN_NUM_DC, 1);
-
- tft_disp_spi->host->hw->data_buf[0] = wd;
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = 23;
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
- while (tft_disp_spi->host->hw->cmd.usr); // Wait for SPI bus ready
-
- taskENABLE_INTERRUPTS();
- if (sel) disp_deselect();
- }
-
- //-----------------------------------------------------------
- static void IRAM_ATTR _dma_send(uint8_t *data, uint32_t size)
- {
- //Fill DMA descriptors
- spi_lobo_dmaworkaround_transfer_active(tft_disp_spi->host->dma_chan); //mark channel as active
- spi_lobo_setup_dma_desc_links(tft_disp_spi->host->dmadesc_tx, size, data, false);
- tft_disp_spi->host->hw->user.usr_mosi_highpart=0;
- tft_disp_spi->host->hw->dma_out_link.addr=(int)(&tft_disp_spi->host->dmadesc_tx[0]) & 0xFFFFF;
- tft_disp_spi->host->hw->dma_out_link.start=1;
- tft_disp_spi->host->hw->user.usr_mosi_highpart=0;
-
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = (size * 8) - 1;
-
- _dma_sending = 1;
- // Start transfer
- tft_disp_spi->host->hw->cmd.usr = 1;
- }
-
- //---------------------------------------------------------------------------
- static void IRAM_ATTR _direct_send(color_t *color, uint32_t len, uint8_t rep)
- {
- uint32_t cidx = 0; // color buffer index
- uint32_t wd = 0;
- int idx = 0;
- int bits = 0;
- int wbits = 0;
-
- taskDISABLE_INTERRUPTS();
- color_t _color = color[0];
- if ((rep) && (tft_gray_scale)) _color = color2gs(color[0]);
-
- while (len) {
- // ** Get color data from color buffer **
- if (rep == 0) {
- if (tft_gray_scale) _color = color2gs(color[cidx]);
- else _color = color[cidx];
- }
-
- wd |= (uint32_t)_color.r << wbits;
- wbits += 8;
- if (wbits == 32) {
- bits += wbits;
- wbits = 0;
- tft_disp_spi->host->hw->data_buf[idx++] = wd;
- wd = 0;
- }
- wd |= (uint32_t)_color.g << wbits;
- wbits += 8;
- if (wbits == 32) {
- bits += wbits;
- wbits = 0;
- tft_disp_spi->host->hw->data_buf[idx++] = wd;
- wd = 0;
- }
- wd |= (uint32_t)_color.b << wbits;
- wbits += 8;
- if (wbits == 32) {
- bits += wbits;
- wbits = 0;
- tft_disp_spi->host->hw->data_buf[idx++] = wd;
- wd = 0;
- }
- len--; // Decrement colors counter
- if (rep == 0) cidx++; // if not repeating color, increment color buffer index
- }
- if (bits) {
- while (tft_disp_spi->host->hw->cmd.usr); // Wait for SPI bus ready
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = bits-1; // set number of bits to be sent
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
- }
- taskENABLE_INTERRUPTS();
- }
-
- // ================================================================
- // === Main function to send data to display ======================
- // If rep==true: repeat sending color data to display 'len' times
- // If rep==false: send 'len' color data from color buffer to display
- // ** Device must already be selected and address window set **
- // ================================================================
- //----------------------------------------------------------------------------------------------
- static void IRAM_ATTR _TFT_pushColorRep(color_t *color, uint32_t len, uint8_t rep, uint8_t wait)
- {
- if (len == 0) return;
- if (!(tft_disp_spi->cfg.flags & LB_SPI_DEVICE_HALFDUPLEX)) return;
-
- // Send RAM WRITE command
- gpio_set_level(PIN_NUM_DC, 0);
- tft_disp_spi->host->hw->data_buf[0] = (uint32_t)TFT_RAMWR;
- tft_disp_spi->host->hw->mosi_dlen.usr_mosi_dbitlen = 7;
- tft_disp_spi->host->hw->cmd.usr = 1; // Start transfer
- while (tft_disp_spi->host->hw->cmd.usr); // Wait for SPI bus ready
-
- gpio_set_level(PIN_NUM_DC, 1); // Set DC to 1 (data mode);
-
- if ((len*24) <= 512) {
-
- _direct_send(color, len, rep);
-
- }
- else if (rep == 0) {
- // ==== use DMA transfer ====
- // ** Prepare data
- if (tft_gray_scale) {
- for (int n=0; n<len; n++) {
- color[n] = color2gs(color[n]);
- }
- }
-
- _dma_send((uint8_t *)color, len*3);
- }
- else {
- // ==== Repeat color, more than 512 bits total ====
-
- color_t _color;
- uint32_t buf_colors;
- int buf_bytes, to_send;
-
- /*
- to_send = len;
- while (to_send > 0) {
- wait_trans_finish(0);
- _direct_send(color, ((to_send > 21) ? 21 : to_send), rep);
- to_send -= 21;
- }
- */
-
- buf_colors = ((len > (tft_width*2)) ? (tft_width*2) : len);
- buf_bytes = buf_colors * 3;
-
- // Prepare color buffer of maximum 2 color lines
- trans_cline = heap_caps_malloc(buf_bytes, MALLOC_CAP_DMA);
- if (trans_cline == NULL) return;
-
- // Prepare fill color
- if (tft_gray_scale) _color = color2gs(color[0]);
- else _color = color[0];
-
- // Fill color buffer with fill color
- for (uint32_t i=0; i<buf_colors; i++) {
- trans_cline[i] = _color;
- }
-
- // Send 'len' colors
- to_send = len;
- while (to_send > 0) {
- wait_trans_finish(0);
- _dma_send((uint8_t *)trans_cline, ((to_send > buf_colors) ? buf_bytes : (to_send*3)));
- to_send -= buf_colors;
- }
- }
-
- if (wait) wait_trans_finish(1);
- }
-
- // Write 'len' color data to TFT 'window' (x1,y2),(x2,y2)
- //-------------------------------------------------------------------------------------------
- void IRAM_ATTR TFT_pushColorRep(int x1, int y1, int x2, int y2, color_t color, uint32_t len)
- {
- if (disp_select() != ESP_OK) return;
-
- // ** Send address window **
- disp_spi_transfer_addrwin(x1, x2, y1, y2);
-
- _TFT_pushColorRep(&color, len, 1, 1);
-
- disp_deselect();
- }
-
- // Write 'len' color data to TFT 'window' (x1,y2),(x2,y2) from given buffer
- // ** Device must already be selected **
- //-----------------------------------------------------------------------------------
- void IRAM_ATTR send_data(int x1, int y1, int x2, int y2, uint32_t len, color_t *buf)
- {
- // ** Send address window **
- disp_spi_transfer_addrwin(x1, x2, y1, y2);
- _TFT_pushColorRep(buf, len, 0, 0);
- }
-
- // Reads 'len' pixels/colors from the TFT's GRAM 'window'
- // 'buf' is an array of bytes with 1st byte reserved for reading 1 dummy byte
- // and the rest is actually an array of color_t values
- //--------------------------------------------------------------------------------------------
- int IRAM_ATTR read_data(int x1, int y1, int x2, int y2, int len, uint8_t *buf, uint8_t set_sp)
- {
- spi_lobo_transaction_t t;
- uint32_t current_clock = 0;
-
- memset(&t, 0, sizeof(t)); //Zero out the transaction
- memset(buf, 0, len*sizeof(color_t));
-
- if (set_sp) {
- if (disp_deselect() != ESP_OK) return -1;
- // Change spi clock if needed
- current_clock = spi_lobo_get_speed(tft_disp_spi);
- if (tft_max_rdclock < current_clock) spi_lobo_set_speed(tft_disp_spi, tft_max_rdclock);
- }
-
- if (disp_select() != ESP_OK) return -2;
-
- // ** Send address window **
- disp_spi_transfer_addrwin(x1, x2, y1, y2);
-
- // ** GET pixels/colors **
- disp_spi_transfer_cmd(TFT_RAMRD);
-
- t.length=0; //Send nothing
- t.tx_buffer=NULL;
- t.rxlength=8*((len*3)+1); //Receive size in bits
- t.rx_buffer=buf;
- //t.user = (void*)1;
-
- esp_err_t res = spi_lobo_transfer_data(tft_disp_spi, &t); // Receive using direct mode
-
- disp_deselect();
-
- if (set_sp) {
- // Restore spi clock if needed
- if (tft_max_rdclock < current_clock) spi_lobo_set_speed(tft_disp_spi, current_clock);
- }
-
- return res;
- }
-
- // Reads one pixel/color from the TFT's GRAM at position (x,y)
- //-----------------------------------------------
- color_t IRAM_ATTR readPixel(int16_t x, int16_t y)
- {
- uint8_t color_buf[sizeof(color_t)+1] = {0};
-
- read_data(x, y, x+1, y+1, 1, color_buf, 1);
-
- color_t color;
- color.r = color_buf[1];
- color.g = color_buf[2];
- color.b = color_buf[3];
- return color;
- }
-
- // get 16-bit data from touch controller for specified type
- // ** Touch device must already be selected **
- //----------------------------------------
- int IRAM_ATTR touch_get_data(uint8_t type)
- {
- /*
- esp_err_t ret;
- spi_lobo_transaction_t t;
- memset(&t, 0, sizeof(t)); //Zero out the transaction
- uint8_t rxdata[2] = {0};
-
- // send command byte & receive 2 byte response
- t.rxlength=8*2;
- t.rx_buffer=&rxdata;
- t.command = type;
-
- ret = spi_lobo_transfer_data(tft_ts_spi, &t); // Transmit using direct mode
-
- if (ret != ESP_OK) return -1;
- return (((int)(rxdata[0] << 8) | (int)(rxdata[1])) >> 4);
- */
- spi_lobo_device_select(tft_ts_spi, 0);
-
- tft_ts_spi->host->hw->data_buf[0] = type;
- _spi_transfer_start(tft_ts_spi, 24, 24);
- uint16_t res = (uint16_t)(tft_ts_spi->host->hw->data_buf[0] >> 8);
-
- spi_lobo_device_deselect(tft_ts_spi);
-
- return res;
- }
-
- // ==== STMPE610 ===============================================================
-
-
- // ----- STMPE610 --------------------------------------------------------------------------
-
- // Send 1 byte display command, display must be selected
- //---------------------------------------------------------
- static void IRAM_ATTR stmpe610_write_reg(uint8_t reg, uint8_t val) {
-
- spi_lobo_device_select(tft_ts_spi, 0);
-
- tft_ts_spi->host->hw->data_buf[0] = (val << 8) | reg;
- _spi_transfer_start(tft_ts_spi, 16, 0);
-
- spi_lobo_device_deselect(tft_ts_spi);
- }
-
- //-----------------------------------------------
- static uint8_t IRAM_ATTR stmpe610_read_byte(uint8_t reg) {
- spi_lobo_device_select(tft_ts_spi, 0);
-
- tft_ts_spi->host->hw->data_buf[0] = (reg << 8) | (reg | 0x80);
- _spi_transfer_start(tft_ts_spi, 16, 16);
- uint8_t res = tft_ts_spi->host->hw->data_buf[0] >> 8;
-
- spi_lobo_device_deselect(tft_ts_spi);
- return res;
- }
-
- //-----------------------------------------
- static uint16_t IRAM_ATTR stmpe610_read_word(uint8_t reg) {
- spi_lobo_device_select(tft_ts_spi, 0);
-
- tft_ts_spi->host->hw->data_buf[0] = ((((reg+1) << 8) | ((reg+1) | 0x80)) << 16) | (reg << 8) | (reg | 0x80);
- _spi_transfer_start(tft_ts_spi, 32, 32);
- uint16_t res = (uint16_t)(tft_ts_spi->host->hw->data_buf[0] & 0xFF00);
- res |= (uint16_t)(tft_ts_spi->host->hw->data_buf[0] >> 24);
-
- spi_lobo_device_deselect(tft_ts_spi);
- return res;
- }
-
- //-----------------------
- uint32_t stmpe610_getID()
- {
- uint16_t tid = stmpe610_read_word(0);
- uint8_t tver = stmpe610_read_byte(2);
- return (tid << 8) | tver;
- }
-
- //==================
- void stmpe610_Init()
- {
- stmpe610_write_reg(STMPE610_REG_SYS_CTRL1, 0x02); // Software chip reset
- vTaskDelay(10 / portTICK_RATE_MS);
-
- stmpe610_write_reg(STMPE610_REG_SYS_CTRL2, 0x04); // Temperature sensor clock off, GPIO clock off, touch clock on, ADC clock on
-
- stmpe610_write_reg(STMPE610_REG_INT_EN, 0x00); // Don't Interrupt on INT pin
-
- stmpe610_write_reg(STMPE610_REG_ADC_CTRL1, 0x48); // ADC conversion time = 80 clock ticks, 12-bit ADC, internal voltage refernce
- vTaskDelay(2 / portTICK_RATE_MS);
- stmpe610_write_reg(STMPE610_REG_ADC_CTRL2, 0x01); // ADC speed 3.25MHz
- stmpe610_write_reg(STMPE610_REG_GPIO_AF, 0x00); // GPIO alternate function - OFF
- stmpe610_write_reg(STMPE610_REG_TSC_CFG, 0xE3); // Averaging 8, touch detect delay 1ms, panel driver settling time 1ms
- stmpe610_write_reg(STMPE610_REG_FIFO_TH, 0x01); // FIFO threshold = 1
- stmpe610_write_reg(STMPE610_REG_FIFO_STA, 0x01); // FIFO reset enable
- stmpe610_write_reg(STMPE610_REG_FIFO_STA, 0x00); // FIFO reset disable
- stmpe610_write_reg(STMPE610_REG_TSC_FRACT_XYZ, 0x07); // Z axis data format
- stmpe610_write_reg(STMPE610_REG_TSC_I_DRIVE, 0x01); // max 50mA touchscreen line current
- stmpe610_write_reg(STMPE610_REG_TSC_CTRL, 0x30); // X&Y&Z, 16 reading window
- stmpe610_write_reg(STMPE610_REG_TSC_CTRL, 0x31); // X&Y&Z, 16 reading window, TSC enable
- stmpe610_write_reg(STMPE610_REG_INT_STA, 0xFF); // Clear all interrupts
- stmpe610_write_reg(STMPE610_REG_INT_CTRL, 0x00); // Level interrupt, disable interrupts
- }
-
- //===========================================================
- int stmpe610_get_touch(uint16_t *x, uint16_t *y, uint16_t *z)
- {
- if (!(stmpe610_read_byte(STMPE610_REG_TSC_CTRL) & 0x80)) return 0;
-
- // Get touch data
- uint8_t fifo_size = stmpe610_read_byte(STMPE610_REG_FIFO_SIZE);
- while (fifo_size < 2) {
- if (!(stmpe610_read_byte(STMPE610_REG_TSC_CTRL) & 0x80)) return 0;
- fifo_size = stmpe610_read_byte(STMPE610_REG_FIFO_SIZE);
- }
- while (fifo_size > 120) {
- if (!(stmpe610_read_byte(STMPE610_REG_TSC_CTRL) & 0x80)) return 0;
- *x = stmpe610_read_word(STMPE610_REG_TSC_DATA_X);
- *y = stmpe610_read_word(STMPE610_REG_TSC_DATA_Y);
- *z = stmpe610_read_byte(STMPE610_REG_TSC_DATA_Z);
- fifo_size = stmpe610_read_byte(STMPE610_REG_FIFO_SIZE);
- }
- for (uint8_t i=0; i < (fifo_size-1); i++) {
- *x = stmpe610_read_word(STMPE610_REG_TSC_DATA_X);
- *y = stmpe610_read_word(STMPE610_REG_TSC_DATA_Y);
- *z = stmpe610_read_byte(STMPE610_REG_TSC_DATA_Z);
- }
-
- *x = 4096 - *x;
- /*
- // Clear the rest of the fifo
- {
- stmpe610_write_reg(STMPE610_REG_FIFO_STA, 0x01); // FIFO reset enable
- stmpe610_write_reg(STMPE610_REG_FIFO_STA, 0x00); // FIFO reset disable
- }
- */
- return 1;
- }
-
- // ==== STMPE610 ===========================================================================
-
-
- // Find maximum spi clock for successful read from display RAM
- // ** Must be used AFTER the display is initialized **
- //======================
- uint32_t find_rd_speed()
- {
- esp_err_t ret;
- color_t color;
- uint32_t max_speed = 1000000;
- uint32_t change_speed, cur_speed;
- int line_check;
- color_t *color_line = NULL;
- uint8_t *line_rdbuf = NULL;
- uint8_t gs = tft_gray_scale;
-
- tft_gray_scale = 0;
- cur_speed = spi_lobo_get_speed(tft_disp_spi);
-
- color_line = malloc(tft_width*3);
- if (color_line == NULL) goto exit;
-
- line_rdbuf = malloc((tft_width*3)+1);
- if (line_rdbuf == NULL) goto exit;
-
- color_t *rdline = (color_t *)(line_rdbuf+1);
-
- // Fill test line with colors
- color = (color_t){0xEC,0xA8,0x74};
- for (int x=0; x<tft_width; x++) {
- color_line[x] = color;
- }
-
- // Find maximum read spi clock
- for (uint32_t speed=2000000; speed<=cur_speed; speed += 1000000) {
- change_speed = spi_lobo_set_speed(tft_disp_spi, speed);
- if (change_speed == 0) goto exit;
-
- memset(line_rdbuf, 0, tft_width*sizeof(color_t)+1);
-
- if (disp_select()) goto exit;
- // Write color line
- send_data(0, tft_height/2, tft_width-1, tft_height/2, tft_width, color_line);
- if (disp_deselect()) goto exit;
-
- // Read color line
- ret = read_data(0, tft_height/2, tft_width-1, tft_height/2, tft_width, line_rdbuf, 0);
-
- // Compare
- line_check = 0;
- if (ret == ESP_OK) {
- for (int y=0; y<tft_width; y++) {
- if ((color_line[y].r & 0xFC) != (rdline[y].r & 0xFC)) line_check = 1;
- else if ((color_line[y].g & 0xFC) != (rdline[y].g & 0xFC)) line_check = 1;
- else if ((color_line[y].b & 0xFC) != (rdline[y].b & 0xFC)) line_check = 1;
- if (line_check) break;
- }
- }
- else line_check = ret;
-
- if (line_check) break;
- max_speed = speed;
- }
-
- exit:
- tft_gray_scale = gs;
- if (line_rdbuf) free(line_rdbuf);
- if (color_line) free(color_line);
-
- // restore spi clk
- change_speed = spi_lobo_set_speed(tft_disp_spi, cur_speed);
-
- return max_speed;
- }
-
- //---------------------------------------------------------------------------
- // Companion code to the initialization table.
- // Reads and issues a series of LCD commands stored in byte array
- //---------------------------------------------------------------------------
- static void commandList(spi_lobo_device_handle_t spi, const uint8_t *addr) {
- uint8_t numCommands, numArgs, cmd;
- uint16_t ms;
-
- numCommands = *addr++; // Number of commands to follow
- while(numCommands--) { // For each command...
- cmd = *addr++; // save command
- numArgs = *addr++; // Number of args to follow
- ms = numArgs & TFT_CMD_DELAY; // If high bit set, delay follows args
- numArgs &= ~TFT_CMD_DELAY; // Mask out delay bit
-
- disp_spi_transfer_cmd_data(cmd, (uint8_t *)addr, numArgs);
-
- addr += numArgs;
-
- if(ms) {
- ms = *addr++; // Read post-command delay time (ms)
- if(ms == 255) ms = 500; // If 255, delay for 500 ms
- vTaskDelay(ms / portTICK_RATE_MS);
- }
- }
- }
-
- //==================================
- void _tft_setRotation(uint8_t rot) {
- uint8_t rotation = rot & 3; // can't be higher than 3
- uint8_t send = 1;
- uint8_t madctl = 0;
- uint16_t tmp;
-
- if ((rotation & 1)) {
- // in landscape modes must be width > height
- if (tft_width < tft_height) {
- tmp = tft_width;
- tft_width = tft_height;
- tft_height = tmp;
- }
- }
- else {
- // in portrait modes must be width < height
- if (tft_width > tft_height) {
- tmp = tft_width;
- tft_width = tft_height;
- tft_height = tmp;
- }
- }
- #if TFT_INVERT_ROTATION
- switch (rotation) {
- case PORTRAIT:
- madctl = (MADCTL_MV | TFT_RGB_BGR);
- break;
- case LANDSCAPE:
- madctl = (MADCTL_MX | TFT_RGB_BGR);
- break;
- case PORTRAIT_FLIP:
- madctl = (MADCTL_MV | TFT_RGB_BGR);
- break;
- case LANDSCAPE_FLIP:
- madctl = (MADCTL_MY | TFT_RGB_BGR);
- break;
- }
- #elif TFT_INVERT_ROTATION1
- switch (rotation) {
- case PORTRAIT:
- madctl = (MADCTL_MY | MADCTL_MX | TFT_RGB_BGR);
- break;
- case LANDSCAPE:
- madctl = (MADCTL_MY | MADCTL_MV | TFT_RGB_BGR);
- break;
- case PORTRAIT_FLIP:
- madctl = (TFT_RGB_BGR);
- break;
- case LANDSCAPE_FLIP:
- madctl = (MADCTL_MX | MADCTL_MV | TFT_RGB_BGR);
- break;
- }
- #elif TFT_INVERT_ROTATION2
- switch (rotation) {
- case PORTRAIT:
- madctl = (MADCTL_MX | MADCTL_MV | TFT_RGB_BGR);
- break;
- case LANDSCAPE:
- madctl = (TFT_RGB_BGR);
- break;
- case PORTRAIT_FLIP:
- madctl = (MADCTL_MY | MADCTL_MV | TFT_RGB_BGR);
- break;
- case LANDSCAPE_FLIP:
- madctl = (MADCTL_MY | MADCTL_MX | TFT_RGB_BGR);
- break;
- }
- #else
- switch (rotation) {
- case PORTRAIT:
- madctl = (MADCTL_MX | TFT_RGB_BGR);
- break;
- case LANDSCAPE:
- madctl = (MADCTL_MV | TFT_RGB_BGR);
- break;
- case PORTRAIT_FLIP:
- madctl = (MADCTL_MY | TFT_RGB_BGR);
- break;
- case LANDSCAPE_FLIP:
- madctl = (MADCTL_MX | MADCTL_MY | MADCTL_MV | TFT_RGB_BGR);
- break;
- }
- #endif
- if (send) {
- if (disp_select() == ESP_OK) {
- disp_spi_transfer_cmd_data(TFT_MADCTL, &madctl, 1);
- disp_deselect();
- }
- }
-
- }
-
- //=================
- void TFT_PinsInit()
- {
- // Route all used pins to GPIO control
- gpio_pad_select_gpio(PIN_NUM_CS);
- gpio_pad_select_gpio(PIN_NUM_MISO);
- gpio_pad_select_gpio(PIN_NUM_MOSI);
- gpio_pad_select_gpio(PIN_NUM_CLK);
- gpio_pad_select_gpio(PIN_NUM_DC);
-
- gpio_set_direction(PIN_NUM_MISO, GPIO_MODE_INPUT);
- gpio_set_pull_mode(PIN_NUM_MISO, GPIO_PULLUP_ONLY);
- gpio_set_direction(PIN_NUM_CS, GPIO_MODE_OUTPUT);
- gpio_set_direction(PIN_NUM_MOSI, GPIO_MODE_OUTPUT);
- gpio_set_direction(PIN_NUM_CLK, GPIO_MODE_OUTPUT);
- gpio_set_direction(PIN_NUM_DC, GPIO_MODE_OUTPUT);
- gpio_set_level(PIN_NUM_DC, 0);
- #if USE_TOUCH
- gpio_pad_select_gpio(PIN_NUM_TCS);
- gpio_set_direction(PIN_NUM_TCS, GPIO_MODE_OUTPUT);
- #endif
- #if PIN_NUM_BCKL
- gpio_pad_select_gpio(PIN_NUM_BCKL);
- gpio_set_direction(PIN_NUM_BCKL, GPIO_MODE_OUTPUT);
- gpio_set_level(PIN_NUM_BCKL, PIN_BCKL_OFF);
- #endif
-
- #if PIN_NUM_RST
- gpio_pad_select_gpio(PIN_NUM_RST);
- gpio_set_direction(PIN_NUM_RST, GPIO_MODE_OUTPUT);
- gpio_set_level(PIN_NUM_RST, 0);
- #endif
- }
-
- // Initialize the display
- // ====================
- void TFT_display_init()
- {
- esp_err_t ret;
-
- #if PIN_NUM_RST
- //Reset the display
- gpio_set_level(PIN_NUM_RST, 0);
- vTaskDelay(20 / portTICK_RATE_MS);
- gpio_set_level(PIN_NUM_RST, 1);
- vTaskDelay(150 / portTICK_RATE_MS);
- #endif
-
- ret = disp_select();
- assert(ret==ESP_OK);
- //Send all the initialization commands
- if (tft_disp_type == DISP_TYPE_ILI9341) {
- commandList(tft_disp_spi, ILI9341_init);
- }
- else if (tft_disp_type == DISP_TYPE_ILI9488) {
- commandList(tft_disp_spi, ILI9488_init);
- }
- else if (tft_disp_type == DISP_TYPE_ST7789V) {
- commandList(tft_disp_spi, ST7789V_init);
- }
- else if (tft_disp_type == DISP_TYPE_ST7735) {
- commandList(tft_disp_spi, STP7735_init);
- }
- else if (tft_disp_type == DISP_TYPE_ST7735R) {
- commandList(tft_disp_spi, STP7735R_init);
- commandList(tft_disp_spi, Rcmd2green);
- commandList(tft_disp_spi, Rcmd3);
- }
- else if (tft_disp_type == DISP_TYPE_ST7735B) {
- commandList(tft_disp_spi, STP7735R_init);
- commandList(tft_disp_spi, Rcmd2red);
- commandList(tft_disp_spi, Rcmd3);
- uint8_t dt = 0xC0;
- disp_spi_transfer_cmd_data(TFT_MADCTL, &dt, 1);
- }
- else assert(0);
-
- ret = disp_deselect();
- assert(ret==ESP_OK);
-
- // Clear screen
- _tft_setRotation(PORTRAIT);
- TFT_pushColorRep(TFT_STATIC_WIDTH_OFFSET, TFT_STATIC_HEIGHT_OFFSET, tft_width + TFT_STATIC_WIDTH_OFFSET -1, tft_height + TFT_STATIC_HEIGHT_OFFSET -1, (color_t){0,0,0}, (uint32_t)(tft_height*tft_width));
-
- ///Enable backlight
- #if PIN_NUM_BCKL
- gpio_set_level(PIN_NUM_BCKL, PIN_BCKL_ON);
- #endif
- }
-
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