diff options
Diffstat (limited to 'peripheral/libupm/src/st7735/st7735.cxx')
| -rw-r--r-- | peripheral/libupm/src/st7735/st7735.cxx | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/peripheral/libupm/src/st7735/st7735.cxx b/peripheral/libupm/src/st7735/st7735.cxx deleted file mode 100644 index ac01c56..0000000 --- a/peripheral/libupm/src/st7735/st7735.cxx +++ /dev/null @@ -1,270 +0,0 @@ -/* - * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com> - * Copyright (c) 2014 Intel Corporation. - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include <iostream> -#include <string> -#include <stdexcept> -#include <unistd.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> - -#include "st7735.h" - -using namespace upm; - -ST7735::ST7735 (uint8_t csLCD, uint8_t cSD, uint8_t rs, uint8_t rst) - : GFX (160, 128, m_map, font), m_csLCDPinCtx(csLCD), m_cSDPinCtx(cSD), - m_rSTPinCtx(rst), m_rSPinCtx(rs), m_spi(0) { - - initModule (); - configModule (); -} - -void -ST7735::initModule () { - mraa::Result error = mraa::SUCCESS; - - m_height = 160; - m_width = 128; - - m_spi.frequency(15 * 1000000); - - error = m_csLCDPinCtx.dir(mraa::DIR_OUT); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - error = m_cSDPinCtx.dir(mraa::DIR_OUT); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - error = m_rSTPinCtx.dir(mraa::DIR_OUT); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - error = m_rSPinCtx.dir(mraa::DIR_OUT); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - error = m_spi.frequency(15 * 1000000); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - lcdCSOn (); -} - -void -ST7735::write (uint8_t value) { - rsLOW (); - m_spi.writeByte(value); -} - -void -ST7735::data (uint8_t value) { - rsHIGH (); - m_spi.writeByte(value); -} - -void -ST7735::executeCMDList(const uint8_t *addr) { - uint8_t numCommands, numArgs; - uint16_t ms; - - numCommands = *(addr++); // Number of commands to follow - while(numCommands--) { // For each command... - write (*(addr++)); // Read, issue command - numArgs = *(addr++); // Number of args to follow - ms = numArgs & DELAY; // If hibit set, delay follows args - numArgs &= ~DELAY; // Mask out delay bit - while(numArgs--) { // For each argument... - data (*(addr++)); // Read, issue argument - } - - if(ms) { - ms = *(addr++); // Read post-command delay time (ms) - if (ms == 255) { - ms = 500; // If 255, delay for 500 ms - } - usleep (ms * 1000); - } - } -} - -void -ST7735::setAddrWindow(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1) { - uint8_t colstart, rowstart; - colstart = rowstart = 0; - - write (ST7735_CASET); // Column addr set - - rsHIGH (); - m_spiBuffer[0] = 0x00; - m_spiBuffer[1] = x0 + colstart; // XSTART - m_spiBuffer[2] = 0x00; - m_spiBuffer[3] = x1 + colstart; // XEND - m_spi.write(m_spiBuffer, 4); - - write (ST7735_RASET); // Row addr set - - rsHIGH (); - m_spiBuffer[0] = 0x00; - m_spiBuffer[1] = y0 + rowstart; // YSTART - m_spiBuffer[2] = 0x00; - m_spiBuffer[3] = y1 + rowstart; // YEND - m_spi.write(m_spiBuffer, 4); - - write (ST7735_RAMWR); // write to RAM -} - -void -ST7735::drawPixel(int16_t x, int16_t y, uint16_t color) { - if (mraa::SUCCESS != setPixel (x, y, color)) { - return; - } - - refresh (); -} - -void -ST7735::refresh () { - rsHIGH (); - - int fragmentSize = m_height * m_width * 2 / 20; - for (int fragment = 0; fragment < 20; fragment++) { - m_spi.write(&m_map[fragment * fragmentSize], fragmentSize); - } -} - -void -ST7735::configModule() { - rsHIGH (); - lcdCSOff (); - lcdCSOn (); - - m_rSTPinCtx.write(HIGH); - usleep (500000); - m_rSTPinCtx.write(LOW); - usleep (500000); - m_rSTPinCtx.write(HIGH); - usleep (500000); - - executeCMDList (Rcmd1); - executeCMDList (Rcmd2red); - executeCMDList (Rcmd3); - - write (ST7735_MADCTL); - data (0xC0); - - setAddrWindow (0, 0, m_width - 1, m_height - 1); - - fillScreen (ST7735_BLACK); - refresh (); -} - -mraa::Result -ST7735::lcdCSOn () { - mraa::Result error = mraa::SUCCESS; - - error = m_csLCDPinCtx.write(LOW); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - error = m_cSDPinCtx.write(HIGH); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - return error; -} - -mraa::Result -ST7735::lcdCSOff () { - mraa::Result error = mraa::SUCCESS; - - error = m_csLCDPinCtx.write(HIGH); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - return error; -} - -mraa::Result -ST7735::sdCSOn () { - mraa::Result error = mraa::SUCCESS; - - error = m_cSDPinCtx.write(LOW); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - error = m_csLCDPinCtx.write(HIGH); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - return error; -} - -mraa::Result -ST7735::sdCSOff () { - mraa::Result error = mraa::SUCCESS; - - error = m_cSDPinCtx.write(HIGH); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - return error; -} - -mraa::Result -ST7735::rsHIGH () { - mraa::Result error = mraa::SUCCESS; - - error = m_rSPinCtx.write(HIGH); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - return error; -} - -mraa::Result -ST7735::rsLOW () { - mraa::Result error = mraa::SUCCESS; - - error = m_rSPinCtx.write(LOW); - if (error != mraa::SUCCESS) { - mraa::printError (error); - } - - return error; -} |