Rohit Grover / SharpLCD

This driver is meant for the monochrome LCD display (model no: LS013B4DN04) from Sharp; but it should be easily adaptable to other Sharp displays.

Dependents:   sharpLCD-demo

SharpLCD.cpp@3:761d0f489b61, 2014-08-07 (annotated)

Committer:
rgrover1
Date:
Thu Aug 07 14:27:12 2014 +0000
Revision:
3:761d0f489b61
Parent:
0:62d7cfac67ca 
minor improvement to the constructor for SharpLCD

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 0:62d7cfac67ca 1 /* mbed Microcontroller Library
rgrover1 0:62d7cfac67ca 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 0:62d7cfac67ca 3 *
rgrover1 0:62d7cfac67ca 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 0:62d7cfac67ca 5 * you may not use this file except in compliance with the License.
rgrover1 0:62d7cfac67ca 6 * You may obtain a copy of the License at
rgrover1 0:62d7cfac67ca 7 *
rgrover1 0:62d7cfac67ca 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 0:62d7cfac67ca 9 *
rgrover1 0:62d7cfac67ca 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 0:62d7cfac67ca 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 0:62d7cfac67ca 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 0:62d7cfac67ca 13 * See the License for the specific language governing permissions and
rgrover1 0:62d7cfac67ca 14 * limitations under the License.
rgrover1 0:62d7cfac67ca 15 */
rgrover1 0:62d7cfac67ca 16
rgrover1 0:62d7cfac67ca 17 #include "SharpLCD.hpp"
rgrover1 0:62d7cfac67ca 18
rgrover1 0:62d7cfac67ca 19 void
rgrover1 0:62d7cfac67ca 20 SharpLCD::writeBuffer(const uint8_t *buffer, unsigned len)
rgrover1 0:62d7cfac67ca 21 {
rgrover1 0:62d7cfac67ca 22 chipSelect = 1;
rgrover1 0:62d7cfac67ca 23 while (len--) {
rgrover1 0:62d7cfac67ca 24 spi.write(*buffer++);
rgrover1 0:62d7cfac67ca 25 }
rgrover1 0:62d7cfac67ca 26 chipSelect = 0;
rgrover1 0:62d7cfac67ca 27 }
rgrover1 0:62d7cfac67ca 28
rgrover1 0:62d7cfac67ca 29 void
rgrover1 0:62d7cfac67ca 30 SharpLCD::clear(void)
rgrover1 0:62d7cfac67ca 31 {
rgrover1 0:62d7cfac67ca 32 const uint8_t buf[2] = {M2_FLAG, DUMMY8};
rgrover1 0:62d7cfac67ca 33
rgrover1 0:62d7cfac67ca 34 writeBuffer(buf, sizeof(buf));
rgrover1 0:62d7cfac67ca 35 }
rgrover1 0:62d7cfac67ca 36
rgrover1 0:62d7cfac67ca 37 void
rgrover1 0:62d7cfac67ca 38 SharpLCD::drawFrameBuffer(const FrameBuffer &fb)
rgrover1 0:62d7cfac67ca 39 {
rgrover1 0:62d7cfac67ca 40 writeBuffer(fb.getBuffer(), SIZEOF_FRAMEBUFFER_FOR_ALLOC);
rgrover1 0:62d7cfac67ca 41 }
rgrover1 0:62d7cfac67ca 42
rgrover1 0:62d7cfac67ca 43 void
rgrover1 0:62d7cfac67ca 44 SharpLCD::toggleVCOM(void)
rgrover1 0:62d7cfac67ca 45 {
rgrover1 0:62d7cfac67ca 46 static bool frameInversion = false;
rgrover1 0:62d7cfac67ca 47 uint8_t buf[2] = {0, DUMMY8};
rgrover1 0:62d7cfac67ca 48
rgrover1 0:62d7cfac67ca 49 uint8_t mode = 0x0;
rgrover1 0:62d7cfac67ca 50 if (frameInversion) {
rgrover1 0:62d7cfac67ca 51 mode |= M1_FLAG;
rgrover1 0:62d7cfac67ca 52 }
rgrover1 0:62d7cfac67ca 53 frameInversion = !frameInversion; /* toggle frameInversion in
rgrover1 0:62d7cfac67ca 54 * preparation for the next call */
rgrover1 0:62d7cfac67ca 55
rgrover1 0:62d7cfac67ca 56 buf[0] = mode;
rgrover1 0:62d7cfac67ca 57 writeBuffer(buf, sizeof(buf));
rgrover1 0:62d7cfac67ca 58 }