diff options
Diffstat (limited to 'peripheral/libupm/src/lpd8806/lpd8806.cxx')
-rw-r--r-- | peripheral/libupm/src/lpd8806/lpd8806.cxx | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/peripheral/libupm/src/lpd8806/lpd8806.cxx b/peripheral/libupm/src/lpd8806/lpd8806.cxx deleted file mode 100644 index 40c1e82..0000000 --- a/peripheral/libupm/src/lpd8806/lpd8806.cxx +++ /dev/null @@ -1,120 +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 <unistd.h> -#include <stdlib.h> -#include <cstring> -#include <stdexcept> - -#include "lpd8806.h" - -using namespace upm; - -LPD8806::LPD8806 (uint16_t pixelCount, uint8_t csn) : m_csnPinCtx(csn), m_spi(0) { - mraa::Result error = mraa::SUCCESS; - m_name = "LPD8806"; - - m_pixels = NULL; - - error = m_csnPinCtx.dir (mraa::DIR_OUT); - if (error != mraa::SUCCESS) { - throw std::invalid_argument(std::string(__FUNCTION__) + - ": GPIO failed to set direction"); - } - - CSOff (); - - // set spi mode to mode2 (CPOL = 0, CPHA = 0) - m_spi.mode (mraa::SPI_MODE0); - - CSOn (); - // issue initial latch/reset to strip: - for (uint16_t i = ((pixelCount + 31) / 32); i > 0; i--) { - m_spi.writeByte (0); - } - CSOff (); - - m_pixelsCount = pixelCount; - - uint8_t latchBytes; - uint16_t dataBytes, totalBytes; - uint16_t numBytes = 0; - - dataBytes = m_pixelsCount * 3; - latchBytes = (m_pixelsCount + 31) / 32; - totalBytes = dataBytes + latchBytes; - if ((m_pixels = (uint8_t *) malloc(totalBytes))) { - numBytes = totalBytes; - memset ( m_pixels , 0x80, dataBytes); // Init to RGB 'off' state - memset (&m_pixels[dataBytes], 0 , latchBytes); // Clear latch bytes - } -} - -LPD8806::~LPD8806() { - if (m_pixels) { - free(m_pixels); - } -} - -void -LPD8806::setPixelColor (uint16_t pixelOffset, uint8_t r, uint8_t g, uint8_t b) { - if (pixelOffset < m_pixelsCount) { // Arrays are 0-indexed, thus NOT '<=' - uint8_t *ptr = &m_pixels[pixelOffset * 3]; - *ptr++ = g | 0x80; // Strip color order is GRB, - *ptr++ = r | 0x80; // not the more common RGB, - *ptr++ = b | 0x80; // so the order here is intentional; don't "fix" - } -} - -void -LPD8806::show (void) { - uint8_t *ptr = m_pixels; - uint16_t byte = (m_pixelsCount * 3) + ((m_pixelsCount + 31) / 32); - - while (byte--) { - m_spi.writeByte (*ptr++); - } -} - -uint16_t -LPD8806::getStripLength (void) { - return m_pixelsCount; -} - -/* - * ************** - * private area - * ************** - */ - -mraa::Result -LPD8806::CSOn () { - return m_csnPinCtx.write (HIGH); -} - -mraa::Result -LPD8806::CSOff () { - return m_csnPinCtx.write (LOW); -} |