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/SPI16.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 - SPI16 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
jloreto 0:e67bf8f398ee 19 #include "SPI16.h"
jloreto 0:e67bf8f398ee 20
jloreto 0:e67bf8f398ee 21 SPI16::SPI16(int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC)
jloreto 0:e67bf8f398ee 22 : _CS(CS), _spi(mosi, miso, sclk), _reset(reset), _DC(DC)
jloreto 0:e67bf8f398ee 23 {
jloreto 0:e67bf8f398ee 24 _reset = 1;
jloreto 0:e67bf8f398ee 25 _DC=1;
jloreto 0:e67bf8f398ee 26 _CS=1;
jloreto 0:e67bf8f398ee 27 _spi.format(16,0); // 8 bit spi mode 0
jloreto 0:e67bf8f398ee 28 // _spi.frequency(12000000); // 10 Mhz SPI clock, 12mhz for F411
jloreto 0:e67bf8f398ee 29 _spi.frequency(Hz);
jloreto 0:e67bf8f398ee 30 hw_reset();
jloreto 0:e67bf8f398ee 31 }
jloreto 0:e67bf8f398ee 32
jloreto 0:e67bf8f398ee 33 void SPI16::wr_cmd8(unsigned char cmd)
jloreto 0:e67bf8f398ee 34 {
jloreto 0:e67bf8f398ee 35 _spi.format(8,0); // it takes time, better use wr_cmd16 with NOP cmd
jloreto 0:e67bf8f398ee 36 _DC.write(0); // 0=cmd
jloreto 0:e67bf8f398ee 37 _spi.write(cmd); // write 8bit
jloreto 0:e67bf8f398ee 38 _spi.format(16,0);
jloreto 0:e67bf8f398ee 39 _DC.write(1); // 1=data next
jloreto 0:e67bf8f398ee 40 }
jloreto 0:e67bf8f398ee 41 void SPI16::wr_data8(unsigned char data)
jloreto 0:e67bf8f398ee 42 {
jloreto 0:e67bf8f398ee 43 _spi.format(8,0); // it takes time, check prev cmd parameter, in case use wr_data16 with repeated byte
jloreto 0:e67bf8f398ee 44 _spi.write(data); // write 8bit
jloreto 0:e67bf8f398ee 45 _spi.format(16,0);
jloreto 0:e67bf8f398ee 46 }
jloreto 0:e67bf8f398ee 47 void SPI16::wr_cmd16(unsigned short cmd)
jloreto 0:e67bf8f398ee 48 {
jloreto 0:e67bf8f398ee 49 _DC.write(0); // 0=cmd
jloreto 0:e67bf8f398ee 50 _spi.write(cmd); // write 16bit
jloreto 0:e67bf8f398ee 51 _DC.write(1); // 1=data next
jloreto 0:e67bf8f398ee 52 }
jloreto 0:e67bf8f398ee 53 void SPI16::wr_data16(unsigned short data)
jloreto 0:e67bf8f398ee 54 {
jloreto 0:e67bf8f398ee 55 _spi.write(data); // write 16bit
jloreto 0:e67bf8f398ee 56 }
jloreto 0:e67bf8f398ee 57 void SPI16::wr_gram(unsigned short data)
jloreto 0:e67bf8f398ee 58 {
jloreto 0:e67bf8f398ee 59 _spi.write(data); // write 16bit
jloreto 0:e67bf8f398ee 60 }
jloreto 0:e67bf8f398ee 61 void SPI16::wr_gram(unsigned short data, unsigned int count)
jloreto 0:e67bf8f398ee 62 {
jloreto 0:e67bf8f398ee 63 while(count)
jloreto 0:e67bf8f398ee 64 {
jloreto 0:e67bf8f398ee 65 _spi.write(data);
jloreto 0:e67bf8f398ee 66 count--;
jloreto 0:e67bf8f398ee 67 }
jloreto 0:e67bf8f398ee 68 }
jloreto 0:e67bf8f398ee 69 void SPI16::wr_grambuf(unsigned short* data, unsigned int lenght)
jloreto 0:e67bf8f398ee 70 {
jloreto 0:e67bf8f398ee 71 while(lenght)
jloreto 0:e67bf8f398ee 72 {
jloreto 0:e67bf8f398ee 73 _spi.write(*data);
jloreto 0:e67bf8f398ee 74 data++;
jloreto 0:e67bf8f398ee 75 lenght--;
jloreto 0:e67bf8f398ee 76 }
jloreto 0:e67bf8f398ee 77 }
jloreto 0:e67bf8f398ee 78 unsigned short SPI16::rd_gram(bool convert)
jloreto 0:e67bf8f398ee 79 {
jloreto 0:e67bf8f398ee 80 unsigned int r=0;
jloreto 0:e67bf8f398ee 81 r |= _spi.write(0); // 16bit, whole first byte is dummy, second is red
jloreto 0:e67bf8f398ee 82 r <<= 16;
jloreto 0:e67bf8f398ee 83 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 84 if(convert)
jloreto 0:e67bf8f398ee 85 {
jloreto 0:e67bf8f398ee 86 // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
jloreto 0:e67bf8f398ee 87 // during reading, you read the raw 18bit gram
jloreto 0:e67bf8f398ee 88 r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
jloreto 0:e67bf8f398ee 89 }
jloreto 0:e67bf8f398ee 90 else r >>= 8;
jloreto 0:e67bf8f398ee 91 _CS = 1; // force CS HIG to interupt the "read state"
jloreto 0:e67bf8f398ee 92 _CS = 0;
jloreto 0:e67bf8f398ee 93
jloreto 0:e67bf8f398ee 94 return (unsigned short)r;
jloreto 0:e67bf8f398ee 95 }
jloreto 0:e67bf8f398ee 96 unsigned int SPI16::rd_reg_data32(unsigned char reg)
jloreto 0:e67bf8f398ee 97 {
jloreto 0:e67bf8f398ee 98 wr_cmd8(reg);
jloreto 0:e67bf8f398ee 99 unsigned int r=0;
jloreto 0:e67bf8f398ee 100
jloreto 0:e67bf8f398ee 101 r |= _spi.write(0); // we get only 15bit valid, first bit was the dummy cycle
jloreto 0:e67bf8f398ee 102 r <<= 16;
jloreto 0:e67bf8f398ee 103 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 104 r <<= 1; // 32bits are aligned, now collecting bit_0
jloreto 0:e67bf8f398ee 105 r |= (_spi.write(0) >> 15);
jloreto 0:e67bf8f398ee 106 // we clocked 15 more bit so ILI waiting for 16th, we need to reset spi bus
jloreto 0:e67bf8f398ee 107 _CS = 1; // force CS HIG to interupt the cmd
jloreto 0:e67bf8f398ee 108 _CS = 0;
jloreto 0:e67bf8f398ee 109 return r;
jloreto 0:e67bf8f398ee 110 }
jloreto 0:e67bf8f398ee 111 unsigned int SPI16::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
jloreto 0:e67bf8f398ee 112 {
jloreto 0:e67bf8f398ee 113 unsigned int r=0;
jloreto 0:e67bf8f398ee 114 for(int regparam=1; regparam<4; regparam++) // when reading EXTC regs, first parameter is always dummy, so start with 1
jloreto 0:e67bf8f398ee 115 {
jloreto 0:e67bf8f398ee 116 wr_cmd8(SPIreadenablecmd); // spi-in enable cmd, 0xD9 (ili9341) or 0xFB (ili9488) or don't know
jloreto 0:e67bf8f398ee 117 wr_data8(0xF0|regparam); // in low nibble specify which reg parameter we want
jloreto 0:e67bf8f398ee 118 wr_cmd8(reg); // now send cmd (select register we want to read)
jloreto 0:e67bf8f398ee 119 r <<= 8;
jloreto 0:e67bf8f398ee 120 r |= (_spi.write(0) >> 8);
jloreto 0:e67bf8f398ee 121 }
jloreto 0:e67bf8f398ee 122 _CS = 1; // force CS HIG to interupt the cmd
jloreto 0:e67bf8f398ee 123 _CS = 0;
jloreto 0:e67bf8f398ee 124
jloreto 0:e67bf8f398ee 125 return r;
jloreto 0:e67bf8f398ee 126 }
jloreto 0:e67bf8f398ee 127 // ILI932x specific
jloreto 0:e67bf8f398ee 128 void SPI16::dummyread()
jloreto 0:e67bf8f398ee 129 {
jloreto 0:e67bf8f398ee 130 _spi.write(0); // dummy read
jloreto 0:e67bf8f398ee 131 }
jloreto 0:e67bf8f398ee 132 // ILI932x specific
jloreto 0:e67bf8f398ee 133 void SPI16::reg_select(unsigned char reg, bool forread)
jloreto 0:e67bf8f398ee 134 {
jloreto 0:e67bf8f398ee 135 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 136 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 137 _spi.write(0x70); // write 0070
jloreto 0:e67bf8f398ee 138 _spi.write(reg); // write 16bit
jloreto 0:e67bf8f398ee 139 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 140 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 141 if(forread) _spi.write(0x73);
jloreto 0:e67bf8f398ee 142 else _spi.write(0x72);
jloreto 0:e67bf8f398ee 143 }
jloreto 0:e67bf8f398ee 144 // ILI932x specific
jloreto 0:e67bf8f398ee 145 void SPI16::reg_write(unsigned char reg, unsigned short data)
jloreto 0:e67bf8f398ee 146 {
jloreto 0:e67bf8f398ee 147 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 148 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 149 _spi.write(0x70); // write 0070
jloreto 0:e67bf8f398ee 150 _spi.write(reg); // write 16bit
jloreto 0:e67bf8f398ee 151 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 152 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 153 _spi.write(0x72); // write 0072
jloreto 0:e67bf8f398ee 154 _spi.write(data); // write 16bit
jloreto 0:e67bf8f398ee 155 }
jloreto 0:e67bf8f398ee 156 // ILI932x specific
jloreto 0:e67bf8f398ee 157 unsigned short SPI16::reg_read(unsigned char reg)
jloreto 0:e67bf8f398ee 158 {
jloreto 0:e67bf8f398ee 159 unsigned int r=0;
jloreto 0:e67bf8f398ee 160 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 161 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 162 _spi.write(0x70); // write 0070
jloreto 0:e67bf8f398ee 163 _spi.write(reg); // write 16bit
jloreto 0:e67bf8f398ee 164 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 165 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 166 _spi.write(0x73); // write 0073
jloreto 0:e67bf8f398ee 167 r |= _spi.write(0); // read 16bit, 8bit dummy + 8bit valid
jloreto 0:e67bf8f398ee 168 r <<= 16;
jloreto 0:e67bf8f398ee 169 r |= _spi.write(0); // read 16bit
jloreto 0:e67bf8f398ee 170
jloreto 0:e67bf8f398ee 171 _CS = 1; //fixme: to resync, maybe really needed
jloreto 0:e67bf8f398ee 172 _CS = 0; //fixme: to resync, maybe really needed
jloreto 0:e67bf8f398ee 173 return (r>>8);
jloreto 0:e67bf8f398ee 174 }
jloreto 0:e67bf8f398ee 175 void SPI16::hw_reset()
jloreto 0:e67bf8f398ee 176 {
jloreto 0:e67bf8f398ee 177 wait_ms(15);
jloreto 0:e67bf8f398ee 178 _DC = 1;
jloreto 0:e67bf8f398ee 179 _CS = 1;
jloreto 0:e67bf8f398ee 180 _reset = 0; // display reset
jloreto 0:e67bf8f398ee 181 wait_ms(2);
jloreto 0:e67bf8f398ee 182 _reset = 1; // end reset
jloreto 0:e67bf8f398ee 183 wait_ms(100);
jloreto 0:e67bf8f398ee 184 }
jloreto 0:e67bf8f398ee 185 void SPI16::BusEnable(bool enable)
jloreto 0:e67bf8f398ee 186 {
jloreto 0:e67bf8f398ee 187 _CS = enable ? 0:1;
jloreto 0:e67bf8f398ee 188 }