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Last update 1 week 1 day
by
Blaze-Pascal
Arduino_ESP32LCD8.cpp/* * start rewrite from: * https://github.com/lovyan03/LovyanGFX/blob/master/src/lgfx/v0/platforms/LGFX_PARALLEL_ESP32.hpp */ #include "Arduino_ESP32LCD8.h" #if defined(ESP32) && (CONFIG_IDF_TARGET_ESP32S3) #if (ESP_ARDUINO_VERSION_MAJOR < 3) #define WAIT_LCD_NOT_BUSY while (LCD_CAM.lcd_user.val & LCD_CAM_LCD_START) /** * @brief Construct a new Arduino_ESP32LCD8::Arduino_ESP32LCD8 object * * @param dc * @param cs * @param wr * @param rd * @param d0 * @param d1 * @param d2 * @param d3 * @param d4 * @param d5 * @param d6 * @param d7 */ Arduino_ESP32LCD8::Arduino_ESP32LCD8( int8_t dc, int8_t cs, int8_t wr, int8_t rd, int8_t d0, int8_t d1, int8_t d2, int8_t d3, int8_t d4, int8_t d5, int8_t d6, int8_t d7) : _dc(dc), _cs(cs), _wr(wr), _rd(rd), _d0(d0), _d1(d1), _d2(d2), _d3(d3), _d4(d4), _d5(d5), _d6(d6), _d7(d7) { } /** * @brief begin * * @param speed * @param dataMode * @return true * @return false */ bool Arduino_ESP32LCD8::begin(int32_t speed, int8_t dataMode) { if (speed == GFX_NOT_DEFINED) { _speed = 40000000UL; } else { _speed = speed; } pinMode(_dc, OUTPUT); digitalWrite(_dc, HIGH); // Data mode if (_cs != GFX_NOT_DEFINED) { pinMode(_cs, OUTPUT); digitalWrite(_cs, HIGH); // disable chip select } if (_cs >= 32) { _csPinMask = digitalPinToBitMask(_cs); _csPortSet = (PORTreg_t)GPIO_OUT1_W1TS_REG; _csPortClr = (PORTreg_t)GPIO_OUT1_W1TC_REG; } else if (_cs != GFX_NOT_DEFINED) { _csPinMask = digitalPinToBitMask(_cs); _csPortSet = (PORTreg_t)GPIO_OUT_W1TS_REG; _csPortClr = (PORTreg_t)GPIO_OUT_W1TC_REG; } pinMode(_wr, OUTPUT); digitalWrite(_wr, HIGH); // Set write strobe high (inactive) if (_rd != GFX_NOT_DEFINED) { pinMode(_rd, OUTPUT); digitalWrite(_rd, HIGH); } esp_lcd_i80_bus_config_t bus_config = { .dc_gpio_num = _dc, .wr_gpio_num = _wr, .clk_src = LCD_CLK_SRC_PLL160M, .data_gpio_nums = { _d0, _d1, _d2, _d3, _d4, _d5, _d6, _d7}, .bus_width = 8, .max_transfer_bytes = LCD_MAX_PIXELS_AT_ONCE * 2, .psram_trans_align = 0, .sram_trans_align = 0}; esp_lcd_new_i80_bus(&bus_config, &_i80_bus); uint32_t diff = INT32_MAX; uint32_t div_n = 256; uint32_t div_a = 63; uint32_t div_b = 62; uint32_t clkcnt = 64; uint32_t start_cnt = std::min<uint32_t>(64u, (F_CPU / (_speed * 2) + 1)); uint32_t end_cnt = std::max<uint32_t>(2u, F_CPU / 256u / _speed); if (start_cnt <= 2) { end_cnt = 1; } for (uint32_t cnt = start_cnt; diff && cnt >= end_cnt; --cnt) { float fdiv = (float)F_CPU / cnt / _speed; uint32_t n = std::max<uint32_t>(2u, (uint32_t)fdiv); fdiv -= n; for (uint32_t a = 63; diff && a > 0; --a) { uint32_t b = roundf(fdiv * a); if (a == b && n == 256) { break; } uint32_t freq = F_CPU / ((n * cnt) + (float)(b * cnt) / (float)a); uint32_t d = abs(_speed - (int)freq); if (diff <= d) { continue; } diff = d; clkcnt = cnt; div_n = n; div_b = b; div_a = a; if (b == 0 || a == b) { break; } } } if (div_a == div_b) { div_b = 0; div_n += 1; } lcd_cam_lcd_clock_reg_t lcd_clock; lcd_clock.lcd_clkcnt_n = std::max(1u, clkcnt - 1); lcd_clock.lcd_clk_equ_sysclk = (clkcnt == 1); lcd_clock.lcd_ck_idle_edge = true; lcd_clock.lcd_ck_out_edge = false; lcd_clock.lcd_clkm_div_num = div_n; lcd_clock.lcd_clkm_div_b = div_b; lcd_clock.lcd_clkm_div_a = div_a; lcd_clock.lcd_clk_sel = 2; // clock_select: 1=XTAL CLOCK / 2=240MHz / 3=160MHz lcd_clock.clk_en = true; LCD_CAM.lcd_clock.val = lcd_clock.val; _dma_chan = _i80_bus->dma_chan; _dmadesc = (dma_descriptor_t *)heap_caps_malloc(sizeof(dma_descriptor_t), MALLOC_CAP_DMA); _buffer = (uint8_t *)heap_caps_aligned_alloc(16, LCD_MAX_PIXELS_AT_ONCE * 2, MALLOC_CAP_DMA); if (!_buffer) { return false; } return true; } /** * @brief beginWrite * */ void Arduino_ESP32LCD8::beginWrite() { CS_LOW(); LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; LCD_CAM.lcd_user.val = 0; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG; } /** * @brief endWrite * */ void Arduino_ESP32LCD8::endWrite() { WAIT_LCD_NOT_BUSY; CS_HIGH(); } /** * @brief writeCommand * * @param c */ void Arduino_ESP32LCD8::writeCommand(uint8_t c) { LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE | LCD_CAM_LCD_CD_CMD_SET; LCD_CAM.lcd_cmd_val.lcd_cmd_value = c; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; } /** * @brief writeCommand16 * * @param c */ void Arduino_ESP32LCD8::writeCommand16(uint16_t c) { LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE | LCD_CAM_LCD_CD_CMD_SET; _data16.value = c; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; } void Arduino_ESP32LCD8::writeCommandBytes(uint8_t *data, uint32_t len) { LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE | LCD_CAM_LCD_CD_CMD_SET; while (len--) { _data16.value = *data++; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; } /** * @brief write * * @param d */ void Arduino_ESP32LCD8::write(uint8_t d) { LCD_CAM.lcd_cmd_val.lcd_cmd_value = d; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } /** * @brief write16 * * @param d */ void Arduino_ESP32LCD8::write16(uint16_t d) { _data16.value = d; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } /** * @brief writeC8D8 * * @param c * @param d */ void Arduino_ESP32LCD8::writeC8D8(uint8_t c, uint8_t d) { LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE | LCD_CAM_LCD_CD_CMD_SET; LCD_CAM.lcd_cmd_val.lcd_cmd_value = c; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; LCD_CAM.lcd_cmd_val.lcd_cmd_value = d; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } /** * @brief writeC8D16 * * @param c * @param d */ void Arduino_ESP32LCD8::writeC8D16(uint8_t c, uint16_t d) { LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE | LCD_CAM_LCD_CD_CMD_SET; LCD_CAM.lcd_cmd_val.lcd_cmd_value = c; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; LCD_CAM.lcd_cmd_val.lcd_cmd_value = d; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } /** * @brief writeC8D16D16 * * @param c * @param d1 * @param d2 */ void Arduino_ESP32LCD8::writeC8D16D16(uint8_t c, uint16_t d1, uint16_t d2) { LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE | LCD_CAM_LCD_CD_CMD_SET; LCD_CAM.lcd_cmd_val.lcd_cmd_value = c; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; _data16.value = d1; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; _data16.value = d2; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } /** * @brief writeC8D16D16Split * * @param c * @param d1 * @param d2 */ void Arduino_ESP32LCD8::writeC8D16D16Split(uint8_t c, uint16_t d1, uint16_t d2) { LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE | LCD_CAM_LCD_CD_CMD_SET; _data16.value = c; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_misc.val = LCD_CAM_LCD_CD_IDLE_EDGE; _data16.value = d1; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; _data16.value = d2; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } /** * @brief writeRepeat * * @param p * @param len */ void Arduino_ESP32LCD8::writeRepeat(uint16_t p, uint32_t len) { if (len > USE_DMA_THRESHOLD) { uint32_t bufLen = (len < LCD_MAX_PIXELS_AT_ONCE) ? len : LCD_MAX_PIXELS_AT_ONCE; uint32_t xferLen, l; uint32_t c32; MSB_32_16_16_SET(c32, p, p); l = (bufLen + 1) / 2; for (uint32_t i = 0; i < l; i++) { _buffer32[i] = c32; } _data16.value = p; _data32.value = 0; _data32.lsb = _data16.msb; _data32.lsb_2 = _data16.lsb; while (len > USE_DMA_THRESHOLD) { xferLen = (bufLen <= len) ? bufLen : len; // How many this pass? LCD_CAM.lcd_cmd_val.val = _data32.value; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; l = xferLen - 2; l <<= 1; *(uint32_t *)_dmadesc = ((l + 3) & (~3)) | l << 12 | 0xC0000000; _dmadesc->buffer = _buffer; _dmadesc->next = nullptr; gdma_start(_dma_chan, (intptr_t)(_dmadesc)); LCD_CAM.lcd_cmd_val.val = _data32.value; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG; len -= xferLen; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_START; } } while (len--) { _data16.value = p; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } } /** * @brief writePixels * * @param data * @param len */ void Arduino_ESP32LCD8::writePixels(uint16_t *data, uint32_t len) { uint32_t xferLen, l; if (esp_ptr_dma_capable(data)) { while (len > (USE_DMA_THRESHOLD)) // While pixels remain { xferLen = (len >= LCD_MAX_PIXELS_AT_ONCE) ? (LCD_MAX_PIXELS_AT_ONCE) : len; // How many this pass? _data16.value = *data++; _data32.value = 0; _data32.lsb = _data16.msb; _data32.lsb_2 = _data16.lsb; LCD_CAM.lcd_cmd_val.val = _data32.value; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; _data16.value = *data++; _data32.value = 0; _data32.lsb = _data16.msb; _data32.lsb_2 = _data16.lsb; l = xferLen - 2; l <<= 1; *(uint32_t *)_dmadesc = ((l + 3) & (~3)) | l << 12 | 0xC0000000; _dmadesc->buffer = data; _dmadesc->next = nullptr; gdma_start(_dma_chan, (intptr_t)(_dmadesc)); LCD_CAM.lcd_cmd_val.val = _data32.value; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG; data += xferLen - 2; len -= xferLen; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_START; } } else { while (len > (USE_DMA_THRESHOLD)) // While pixels remain { xferLen = (len >= LCD_MAX_PIXELS_AT_ONCE) ? (LCD_MAX_PIXELS_AT_ONCE) : len; // How many this pass? _data16.value = *data++; _data32.value = 0; _data32.lsb = _data16.msb; _data32.lsb_2 = _data16.lsb; LCD_CAM.lcd_cmd_val.val = _data32.value; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; _data16.value = *data++; _data32.value = 0; _data32.lsb = _data16.msb; _data32.lsb_2 = _data16.lsb; l = xferLen - 2; l <<= 1; for (uint32_t i = 0; i < l;) { _data16.value = *data++; _buffer[i++] = _data16.msb; _buffer[i++] = _data16.lsb; } *(uint32_t *)_dmadesc = ((l + 3) & (~3)) | l << 12 | 0xC0000000; _dmadesc->buffer = _buffer32; _dmadesc->next = nullptr; gdma_start(_dma_chan, (intptr_t)(_dmadesc)); LCD_CAM.lcd_cmd_val.val = _data32.value; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG; len -= xferLen; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_START; } } while (len--) { _data16.value = *data++; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } } /** * @brief writeBytes * * @param data * @param len */ void Arduino_ESP32LCD8::writeBytes(uint8_t *data, uint32_t len) { uint32_t xferLen, l; if (esp_ptr_dma_capable(data)) { while (len > (USE_DMA_THRESHOLD << 1)) // While pixels remain { xferLen = (len >= LCD_MAX_PIXELS_AT_ONCE << 1) ? (LCD_MAX_PIXELS_AT_ONCE << 1) : len; // How many this pass? _data32.value = 0; _data32.lsb = *data++; _data32.lsb_2 = *data++; LCD_CAM.lcd_cmd_val.val = _data32.value; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; _data32.value = 0; _data32.lsb = *data++; _data32.lsb_2 = *data++; l = xferLen - 4; *(uint32_t *)_dmadesc = ((l + 3) & (~3)) | l << 12 | 0xC0000000; _dmadesc->buffer = data; _dmadesc->next = nullptr; gdma_start(_dma_chan, (intptr_t)(_dmadesc)); LCD_CAM.lcd_cmd_val.val = _data32.value; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG; data += xferLen - 4; len -= xferLen; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_START; } } else { uint32_t l4; uint32_t *p; while (len > (USE_DMA_THRESHOLD << 1)) // While pixels remain { xferLen = (len >= LCD_MAX_PIXELS_AT_ONCE << 1) ? (LCD_MAX_PIXELS_AT_ONCE << 1) : len; // How many this pass? _data32.value = 0; _data32.lsb = *data++; _data32.lsb_2 = *data++; LCD_CAM.lcd_cmd_val.val = _data32.value; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; _data32.value = 0; _data32.lsb = *data++; _data32.lsb_2 = *data++; l = xferLen - 4; l4 = (l + 3) >> 2; p = (uint32_t *)data; for (uint32_t i = 0; i < l4; i++) { _buffer32[i] = *p++; } *(uint32_t *)_dmadesc = ((l + 3) & (~3)) | l << 12 | 0xC0000000; _dmadesc->buffer = _buffer32; _dmadesc->next = nullptr; gdma_start(_dma_chan, (intptr_t)(_dmadesc)); LCD_CAM.lcd_cmd_val.val = _data32.value; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG; data += xferLen - 4; len -= xferLen; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_START; } } while (len) { if (len == 1) { LCD_CAM.lcd_cmd_val.lcd_cmd_value = *data; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; len--; } else { LCD_CAM.lcd_cmd_val.lcd_cmd_value = *data++; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = *data++; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; len -= 2; } } } /** * @brief writeIndexedPixels * * @param data * @param idx * @param len */ void Arduino_ESP32LCD8::writeIndexedPixels(uint8_t *data, uint16_t *idx, uint32_t len) { if (len > USE_DMA_THRESHOLD) { uint32_t bufLen = (len < LCD_MAX_PIXELS_AT_ONCE) ? len : LCD_MAX_PIXELS_AT_ONCE; uint32_t xferLen, l; while (len > USE_DMA_THRESHOLD) { xferLen = (bufLen <= len) ? bufLen : len; // How many this pass? _data16.value = idx[*data++]; _data32.value = 0; _data32.lsb = _data16.msb; _data32.lsb_2 = _data16.lsb; LCD_CAM.lcd_cmd_val.val = _data32.value; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; _data16.value = idx[*data++]; _data32.value = 0; _data32.lsb = _data16.msb; _data32.lsb_2 = _data16.lsb; l = xferLen - 2; l >>= 1; for (uint32_t i = 0; i < l; i++) { _data16.value = idx[*data++]; _data32.lsb = _data16.msb; _data32.msb = _data16.lsb; _data16.value = idx[*data++]; _data32.lsb_2 = _data16.msb; _data32.msb_2 = _data16.lsb; _buffer32[i] = _data32.value; } l <<= 2; *(uint32_t *)_dmadesc = ((l + 3) & (~3)) | l << 12 | 0xC0000000; _dmadesc->buffer = _buffer; _dmadesc->next = nullptr; gdma_start(_dma_chan, (intptr_t)(_dmadesc)); LCD_CAM.lcd_cmd_val.val = _data32.value; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_UPDATE_REG; len -= xferLen; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_ALWAYS_OUT_EN | LCD_CAM_LCD_DOUT | LCD_CAM_LCD_CMD | LCD_CAM_LCD_CMD_2_CYCLE_EN | LCD_CAM_LCD_START; } } while (len--) { _data16.value = idx[*data++]; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } } /** * @brief writeIndexedPixelsDouble * * @param data * @param idx * @param len */ void Arduino_ESP32LCD8::writeIndexedPixelsDouble(uint8_t *data, uint16_t *idx, uint32_t len) { while (len--) { _data16.value = idx[*data++]; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.msb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; LCD_CAM.lcd_cmd_val.lcd_cmd_value = _data16.lsb; WAIT_LCD_NOT_BUSY; LCD_CAM.lcd_user.val = LCD_CAM_LCD_CMD | LCD_CAM_LCD_UPDATE_REG | LCD_CAM_LCD_START; } } /******** low level bit twiddling **********/ /** * @brief CS_HIGH * * @return INLINE */ INLINE void Arduino_ESP32LCD8::CS_HIGH(void) { if (_cs != GFX_NOT_DEFINED) { *_csPortSet = _csPinMask; } } /** * @brief CS_LOW * * @return INLINE */ INLINE void Arduino_ESP32LCD8::CS_LOW(void) { if (_cs != GFX_NOT_DEFINED) { *_csPortClr = _csPinMask; } } #endif // #if defined(ESP_ARDUINO_VERSION_MAJOR) && (ESP_ARDUINO_VERSION_MAJOR < 3) #endif // #if defined(ESP32) && (CONFIG_IDF_TARGET_ESP32S3)