Juan Loreto / Mbed 2 deprecated Nucleo-F411RE-LGDP4535_TFT_Demo

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   mbed

Protocols/BUS16.cpp@0:e67bf8f398ee, 2015-08-23 (annotated)

Committer:
jloreto
Date:
Sun Aug 23 15:50:19 2015 +0000
Revision:
0:e67bf8f398ee
This program is to test MCU Friend shield based on LGDP4535 in Nucleo-F411RE board.; Libraries modified from Unigraphic Library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jloreto 0:e67bf8f398ee 1 /* mbed UniGraphic library - BUS16 protocol class
jloreto 0:e67bf8f398ee 2 * Copyright (c) 2015 Giuliano Dianda
jloreto 0:e67bf8f398ee 3 * Released under the MIT License: http://mbed.org/license/mit
jloreto 0:e67bf8f398ee 4 *
jloreto 0:e67bf8f398ee 5 * Derived work of:
jloreto 0:e67bf8f398ee 6 *
jloreto 0:e67bf8f398ee 7 * mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
jloreto 0:e67bf8f398ee 8 * Copyright (c) 2013 Peter Drescher - DC2PD
jloreto 0:e67bf8f398ee 9 *
jloreto 0:e67bf8f398ee 10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
jloreto 0:e67bf8f398ee 11 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
jloreto 0:e67bf8f398ee 12 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
jloreto 0:e67bf8f398ee 13 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
jloreto 0:e67bf8f398ee 14 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jloreto 0:e67bf8f398ee 15 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
jloreto 0:e67bf8f398ee 16 * THE SOFTWARE.
jloreto 0:e67bf8f398ee 17 */
jloreto 0:e67bf8f398ee 18 #include "BUS16.h"
jloreto 0:e67bf8f398ee 19
jloreto 0:e67bf8f398ee 20 BUS16::BUS16(PinName* buspins, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD)
jloreto 0:e67bf8f398ee 21 : _bus(buspins), _CS(CS), _reset(reset), _DC(DC), _WR(WR), _RD(RD)
jloreto 0:e67bf8f398ee 22 {
jloreto 0:e67bf8f398ee 23 _reset = 1;
jloreto 0:e67bf8f398ee 24 _DC=1;
jloreto 0:e67bf8f398ee 25 _WR=1;
jloreto 0:e67bf8f398ee 26 _RD=1;
jloreto 0:e67bf8f398ee 27 _CS=1;
jloreto 0:e67bf8f398ee 28 _bus.mode(PullNone);
jloreto 0:e67bf8f398ee 29 _bus.output(); // will re-enable our GPIO port
jloreto 0:e67bf8f398ee 30 hw_reset();
jloreto 0:e67bf8f398ee 31 }
jloreto 0:e67bf8f398ee 32
jloreto 0:e67bf8f398ee 33 void BUS16::wr_cmd8(unsigned char cmd)
jloreto 0:e67bf8f398ee 34 {
jloreto 0:e67bf8f398ee 35 _DC = 0; // 0=cmd
jloreto 0:e67bf8f398ee 36 _bus.write(cmd); // write 8bit
jloreto 0:e67bf8f398ee 37 _WR=0;
jloreto 0:e67bf8f398ee 38 _WR=1;
jloreto 0:e67bf8f398ee 39 _DC = 1; // 1=data next
jloreto 0:e67bf8f398ee 40 }
jloreto 0:e67bf8f398ee 41 void BUS16::wr_data8(unsigned char data)
jloreto 0:e67bf8f398ee 42 {
jloreto 0:e67bf8f398ee 43 _bus.write(data); // write 8bit
jloreto 0:e67bf8f398ee 44 _WR=0;
jloreto 0:e67bf8f398ee 45 _WR=1;
jloreto 0:e67bf8f398ee 46 }
jloreto 0:e67bf8f398ee 47 void BUS16::wr_cmd16(unsigned short cmd)
jloreto 0:e67bf8f398ee 48 {
jloreto 0:e67bf8f398ee 49 _DC = 0; // 0=cmd
jloreto 0:e67bf8f398ee 50 _bus.write(cmd>>8); // write 8bit
jloreto 0:e67bf8f398ee 51 _WR=0;
jloreto 0:e67bf8f398ee 52 _WR=1;
jloreto 0:e67bf8f398ee 53 _bus.write(cmd&0xFF); // write 8bit
jloreto 0:e67bf8f398ee 54 _WR=0;
jloreto 0:e67bf8f398ee 55 _WR=1;
jloreto 0:e67bf8f398ee 56 _DC = 1; // 1=data next
jloreto 0:e67bf8f398ee 57 }
jloreto 0:e67bf8f398ee 58 void BUS16::wr_data16(unsigned short data)
jloreto 0:e67bf8f398ee 59 {
jloreto 0:e67bf8f398ee 60 _bus.write(data>>8); // write 8bit
jloreto 0:e67bf8f398ee 61 _WR=0;
jloreto 0:e67bf8f398ee 62 _WR=1;
jloreto 0:e67bf8f398ee 63 _bus.write(data&0xFF); // write 8bit
jloreto 0:e67bf8f398ee 64 _WR=0;
jloreto 0:e67bf8f398ee 65 _WR=1;
jloreto 0:e67bf8f398ee 66 }
jloreto 0:e67bf8f398ee 67 void BUS16::wr_gram(unsigned short data)
jloreto 0:e67bf8f398ee 68 {
jloreto 0:e67bf8f398ee 69 _bus.write(data); // write 16bit
jloreto 0:e67bf8f398ee 70 _WR=0;
jloreto 0:e67bf8f398ee 71 _WR=1;
jloreto 0:e67bf8f398ee 72 }
jloreto 0:e67bf8f398ee 73 void BUS16::wr_gram(unsigned short data, unsigned int count)
jloreto 0:e67bf8f398ee 74 {
jloreto 0:e67bf8f398ee 75 while(count)
jloreto 0:e67bf8f398ee 76 {
jloreto 0:e67bf8f398ee 77 _bus.write(data); // rewrite even if same data, otherwise too much fast
jloreto 0:e67bf8f398ee 78 _WR=0;
jloreto 0:e67bf8f398ee 79 _WR=1;
jloreto 0:e67bf8f398ee 80 count--;
jloreto 0:e67bf8f398ee 81 }
jloreto 0:e67bf8f398ee 82 }
jloreto 0:e67bf8f398ee 83 void BUS16::wr_grambuf(unsigned short* data, unsigned int lenght)
jloreto 0:e67bf8f398ee 84 {
jloreto 0:e67bf8f398ee 85 while(lenght)
jloreto 0:e67bf8f398ee 86 {
jloreto 0:e67bf8f398ee 87 _bus.write(*data); // write 16bit
jloreto 0:e67bf8f398ee 88 _WR=0;
jloreto 0:e67bf8f398ee 89 _WR=1;
jloreto 0:e67bf8f398ee 90 data++;
jloreto 0:e67bf8f398ee 91 lenght--;
jloreto 0:e67bf8f398ee 92 }
jloreto 0:e67bf8f398ee 93 }
jloreto 0:e67bf8f398ee 94 unsigned short BUS16::rd_gram(bool convert)
jloreto 0:e67bf8f398ee 95 {
jloreto 0:e67bf8f398ee 96 unsigned int r=0;
jloreto 0:e67bf8f398ee 97 _bus.input();
jloreto 0:e67bf8f398ee 98
jloreto 0:e67bf8f398ee 99 _RD = 0;
jloreto 0:e67bf8f398ee 100 _bus.read(); //dummy read
jloreto 0:e67bf8f398ee 101 _RD = 1;
jloreto 0:e67bf8f398ee 102
jloreto 0:e67bf8f398ee 103 _RD = 0;
jloreto 0:e67bf8f398ee 104 // _RD = 0; // add wait
jloreto 0:e67bf8f398ee 105 r |= _bus.read();
jloreto 0:e67bf8f398ee 106 _RD = 1;
jloreto 0:e67bf8f398ee 107 if(convert)
jloreto 0:e67bf8f398ee 108 {
jloreto 0:e67bf8f398ee 109 r <<= 8;
jloreto 0:e67bf8f398ee 110 _RD = 0;
jloreto 0:e67bf8f398ee 111 // _RD = 0; // add wait
jloreto 0:e67bf8f398ee 112 r |= _bus.read()>>8; //MSB of port read is blue, LSB is red of next pixel
jloreto 0:e67bf8f398ee 113 _RD = 1;
jloreto 0:e67bf8f398ee 114 // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
jloreto 0:e67bf8f398ee 115 // during reading, you read the raw 18bit gram
jloreto 0:e67bf8f398ee 116 r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
jloreto 0:e67bf8f398ee 117 }
jloreto 0:e67bf8f398ee 118 _bus.output();
jloreto 0:e67bf8f398ee 119 return (unsigned short)r;
jloreto 0:e67bf8f398ee 120 }
jloreto 0:e67bf8f398ee 121 unsigned int BUS16::rd_reg_data32(unsigned char reg)
jloreto 0:e67bf8f398ee 122 {
jloreto 0:e67bf8f398ee 123 wr_cmd8(reg);
jloreto 0:e67bf8f398ee 124 unsigned int r=0;
jloreto 0:e67bf8f398ee 125 // _DC = 1; // 1=data
jloreto 0:e67bf8f398ee 126 _bus.input();
jloreto 0:e67bf8f398ee 127
jloreto 0:e67bf8f398ee 128 _RD = 0;
jloreto 0:e67bf8f398ee 129 _bus.read(); //dummy read
jloreto 0:e67bf8f398ee 130 _RD = 1;
jloreto 0:e67bf8f398ee 131
jloreto 0:e67bf8f398ee 132 _RD = 0;
jloreto 0:e67bf8f398ee 133 // _RD = 0; // add wait
jloreto 0:e67bf8f398ee 134 r |= (_bus.read()&0xFF);
jloreto 0:e67bf8f398ee 135 r <<= 8;
jloreto 0:e67bf8f398ee 136 _RD = 1;
jloreto 0:e67bf8f398ee 137
jloreto 0:e67bf8f398ee 138 _RD = 0;
jloreto 0:e67bf8f398ee 139 // _RD = 0; // add wait
jloreto 0:e67bf8f398ee 140 r |= (_bus.read()&0xFF);
jloreto 0:e67bf8f398ee 141 r <<= 8;
jloreto 0:e67bf8f398ee 142 _RD = 1;
jloreto 0:e67bf8f398ee 143
jloreto 0:e67bf8f398ee 144 _RD = 0;
jloreto 0:e67bf8f398ee 145 // _RD = 0; // add wait
jloreto 0:e67bf8f398ee 146 r |= (_bus.read()&0xFF);
jloreto 0:e67bf8f398ee 147 r <<= 8;
jloreto 0:e67bf8f398ee 148 _RD = 1;
jloreto 0:e67bf8f398ee 149
jloreto 0:e67bf8f398ee 150 _RD = 0;
jloreto 0:e67bf8f398ee 151 // _RD = 0; // add wait
jloreto 0:e67bf8f398ee 152 r |= (_bus.read()&0xFF);
jloreto 0:e67bf8f398ee 153 _RD = 1;
jloreto 0:e67bf8f398ee 154
jloreto 0:e67bf8f398ee 155 _CS = 1; // toggle CS to interupt the cmd in case was not supported
jloreto 0:e67bf8f398ee 156 _CS = 0;
jloreto 0:e67bf8f398ee 157
jloreto 0:e67bf8f398ee 158 _bus.output();
jloreto 0:e67bf8f398ee 159 return r;
jloreto 0:e67bf8f398ee 160 }
jloreto 0:e67bf8f398ee 161 // in Par mode EXTC regs (0xB0-0xFF) can be directly read
jloreto 0:e67bf8f398ee 162 unsigned int BUS16::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
jloreto 0:e67bf8f398ee 163 {
jloreto 0:e67bf8f398ee 164 return rd_reg_data32(reg);
jloreto 0:e67bf8f398ee 165 }
jloreto 0:e67bf8f398ee 166 // ILI932x specific
jloreto 0:e67bf8f398ee 167 void BUS16::dummyread()
jloreto 0:e67bf8f398ee 168 {
jloreto 0:e67bf8f398ee 169 _bus.input();
jloreto 0:e67bf8f398ee 170 _RD = 0;
jloreto 0:e67bf8f398ee 171 _bus.read(); // dummy read
jloreto 0:e67bf8f398ee 172 _RD=1;
jloreto 0:e67bf8f398ee 173 // _bus.output();
jloreto 0:e67bf8f398ee 174 }
jloreto 0:e67bf8f398ee 175 // ILI932x specific
jloreto 0:e67bf8f398ee 176 void BUS16::reg_select(unsigned char reg, bool forread)
jloreto 0:e67bf8f398ee 177 {
jloreto 0:e67bf8f398ee 178 _DC = 0;
jloreto 0:e67bf8f398ee 179 _bus.write(reg); // write 16bit
jloreto 0:e67bf8f398ee 180 _WR=0;
jloreto 0:e67bf8f398ee 181 _WR=1;
jloreto 0:e67bf8f398ee 182 _DC = 1; // 1=data next
jloreto 0:e67bf8f398ee 183 }
jloreto 0:e67bf8f398ee 184 // ILI932x specific
jloreto 0:e67bf8f398ee 185 void BUS16::reg_write(unsigned char reg, unsigned short data)
jloreto 0:e67bf8f398ee 186 {
jloreto 0:e67bf8f398ee 187 _DC = 0;
jloreto 0:e67bf8f398ee 188 _bus.write(reg); // write 16bit
jloreto 0:e67bf8f398ee 189 _WR=0;
jloreto 0:e67bf8f398ee 190 _WR=1;
jloreto 0:e67bf8f398ee 191 _DC = 1;
jloreto 0:e67bf8f398ee 192 _bus.write(data); // write 16bit
jloreto 0:e67bf8f398ee 193 _WR=0;
jloreto 0:e67bf8f398ee 194 _WR=1;
jloreto 0:e67bf8f398ee 195 }
jloreto 0:e67bf8f398ee 196 // ILI932x specific
jloreto 0:e67bf8f398ee 197 unsigned short BUS16::reg_read(unsigned char reg)
jloreto 0:e67bf8f398ee 198 {
jloreto 0:e67bf8f398ee 199 unsigned short r=0;
jloreto 0:e67bf8f398ee 200 _DC = 0;
jloreto 0:e67bf8f398ee 201 _bus.write(reg); // write 16bit
jloreto 0:e67bf8f398ee 202 _WR=0;
jloreto 0:e67bf8f398ee 203 _WR=1;
jloreto 0:e67bf8f398ee 204 _DC = 1;
jloreto 0:e67bf8f398ee 205 _bus.input();
jloreto 0:e67bf8f398ee 206 _RD=0;
jloreto 0:e67bf8f398ee 207 r |= _bus.read(); // read 16bit
jloreto 0:e67bf8f398ee 208 _RD=1;
jloreto 0:e67bf8f398ee 209 _bus.output();
jloreto 0:e67bf8f398ee 210 return r;
jloreto 0:e67bf8f398ee 211 }
jloreto 0:e67bf8f398ee 212 void BUS16::hw_reset()
jloreto 0:e67bf8f398ee 213 {
jloreto 0:e67bf8f398ee 214 wait_ms(15);
jloreto 0:e67bf8f398ee 215 _DC = 1;
jloreto 0:e67bf8f398ee 216 _CS = 1;
jloreto 0:e67bf8f398ee 217 _WR = 1;
jloreto 0:e67bf8f398ee 218 _RD = 1;
jloreto 0:e67bf8f398ee 219 _reset = 0; // display reset
jloreto 0:e67bf8f398ee 220 wait_ms(2);
jloreto 0:e67bf8f398ee 221 _reset = 1; // end reset
jloreto 0:e67bf8f398ee 222 wait_ms(100);
jloreto 0:e67bf8f398ee 223 }
jloreto 0:e67bf8f398ee 224 void BUS16::BusEnable(bool enable)
jloreto 0:e67bf8f398ee 225 {
jloreto 0:e67bf8f398ee 226 _CS = enable ? 0:1;
jloreto 0:e67bf8f398ee 227 }