Juan Loreto / Mbed 2 deprecated Nucleo-F411RE-LGDP4535_TFT_Demo

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Dependencies:   mbed

Protocols/SPI8.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 - SPI8 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 "SPI8.h"
jloreto 0:e67bf8f398ee 20
jloreto 0:e67bf8f398ee 21
jloreto 0:e67bf8f398ee 22 SPI8::SPI8(int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC)
jloreto 0:e67bf8f398ee 23 : _CS(CS), _spi(mosi, miso, sclk), _reset(reset), _DC(DC)
jloreto 0:e67bf8f398ee 24 {
jloreto 0:e67bf8f398ee 25 _reset = 1;
jloreto 0:e67bf8f398ee 26 _DC=1;
jloreto 0:e67bf8f398ee 27 _CS=1;
jloreto 0:e67bf8f398ee 28 _spi.format(8,0); // 8 bit spi mode 0
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 SPI8::wr_cmd8(unsigned char cmd)
jloreto 0:e67bf8f398ee 34 {
jloreto 0:e67bf8f398ee 35 _DC.write(0); // 0=cmd
jloreto 0:e67bf8f398ee 36 _spi.write(cmd); // write 8bit
jloreto 0:e67bf8f398ee 37 _DC.write(1); // 1=data next
jloreto 0:e67bf8f398ee 38 }
jloreto 0:e67bf8f398ee 39 void SPI8::wr_data8(unsigned char data)
jloreto 0:e67bf8f398ee 40 {
jloreto 0:e67bf8f398ee 41 _spi.write(data); // write 8bit
jloreto 0:e67bf8f398ee 42 }
jloreto 0:e67bf8f398ee 43 void SPI8::wr_cmd16(unsigned short cmd)
jloreto 0:e67bf8f398ee 44 {
jloreto 0:e67bf8f398ee 45 _DC.write(0); // 0=cmd
jloreto 0:e67bf8f398ee 46 _spi.write(cmd>>8); // write 8bit
jloreto 0:e67bf8f398ee 47 _spi.write(cmd&0xFF); // write 8bit
jloreto 0:e67bf8f398ee 48 _DC.write(1); // 1=data next
jloreto 0:e67bf8f398ee 49 }
jloreto 0:e67bf8f398ee 50 void SPI8::wr_data16(unsigned short data)
jloreto 0:e67bf8f398ee 51 {
jloreto 0:e67bf8f398ee 52 _spi.write(data>>8); // write 8bit
jloreto 0:e67bf8f398ee 53 _spi.write(data&0xFF); // write 8bit
jloreto 0:e67bf8f398ee 54 }
jloreto 0:e67bf8f398ee 55 void SPI8::wr_gram(unsigned short data)
jloreto 0:e67bf8f398ee 56 {
jloreto 0:e67bf8f398ee 57 _spi.write(data>>8); // write 8bit
jloreto 0:e67bf8f398ee 58 _spi.write(data&0xFF); // write 8bit
jloreto 0:e67bf8f398ee 59 }
jloreto 0:e67bf8f398ee 60 void SPI8::wr_gram(unsigned short data, unsigned int count)
jloreto 0:e67bf8f398ee 61 {
jloreto 0:e67bf8f398ee 62 if((data>>8)==(data&0xFF))
jloreto 0:e67bf8f398ee 63 {
jloreto 0:e67bf8f398ee 64 count<<=1;
jloreto 0:e67bf8f398ee 65 while(count)
jloreto 0:e67bf8f398ee 66 {
jloreto 0:e67bf8f398ee 67 _spi.write(data); // write 8bit
jloreto 0:e67bf8f398ee 68 count--;
jloreto 0:e67bf8f398ee 69 }
jloreto 0:e67bf8f398ee 70 }
jloreto 0:e67bf8f398ee 71 else
jloreto 0:e67bf8f398ee 72 {
jloreto 0:e67bf8f398ee 73 while(count)
jloreto 0:e67bf8f398ee 74 {
jloreto 0:e67bf8f398ee 75 _spi.write(data>>8); // write 8bit
jloreto 0:e67bf8f398ee 76 _spi.write(data&0xFF); // write 8bit
jloreto 0:e67bf8f398ee 77 count--;
jloreto 0:e67bf8f398ee 78 }
jloreto 0:e67bf8f398ee 79 }
jloreto 0:e67bf8f398ee 80 }
jloreto 0:e67bf8f398ee 81 void SPI8::wr_grambuf(unsigned short* data, unsigned int lenght)
jloreto 0:e67bf8f398ee 82 {
jloreto 0:e67bf8f398ee 83 while(lenght)
jloreto 0:e67bf8f398ee 84 {
jloreto 0:e67bf8f398ee 85 _spi.write((*data)>>8); // write 8bit
jloreto 0:e67bf8f398ee 86 _spi.write((*data)&0xFF); // write 8bit
jloreto 0:e67bf8f398ee 87 data++;
jloreto 0:e67bf8f398ee 88 lenght--;
jloreto 0:e67bf8f398ee 89 }
jloreto 0:e67bf8f398ee 90 }
jloreto 0:e67bf8f398ee 91 unsigned short SPI8::rd_gram(bool convert)
jloreto 0:e67bf8f398ee 92 {
jloreto 0:e67bf8f398ee 93 unsigned int r=0;
jloreto 0:e67bf8f398ee 94 _spi.write(0); // whole first byte is dummy
jloreto 0:e67bf8f398ee 95 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 96 r <<= 8;
jloreto 0:e67bf8f398ee 97 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 98 if(convert)
jloreto 0:e67bf8f398ee 99 {
jloreto 0:e67bf8f398ee 100 r <<= 8;
jloreto 0:e67bf8f398ee 101 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 102 // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
jloreto 0:e67bf8f398ee 103 // during reading, you read the raw 18bit gram
jloreto 0:e67bf8f398ee 104 r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
jloreto 0:e67bf8f398ee 105 }
jloreto 0:e67bf8f398ee 106 _CS = 1; // force CS HIG to interupt the "read state"
jloreto 0:e67bf8f398ee 107 _CS = 0;
jloreto 0:e67bf8f398ee 108 return (unsigned short)r;
jloreto 0:e67bf8f398ee 109 }
jloreto 0:e67bf8f398ee 110 unsigned int SPI8::rd_reg_data32(unsigned char reg)
jloreto 0:e67bf8f398ee 111 {
jloreto 0:e67bf8f398ee 112 wr_cmd8(reg);
jloreto 0:e67bf8f398ee 113 unsigned int r=0;
jloreto 0:e67bf8f398ee 114
jloreto 0:e67bf8f398ee 115 r |= _spi.write(0); // we get only 7bit valid, first bit was the dummy cycle
jloreto 0:e67bf8f398ee 116 r <<= 8;
jloreto 0:e67bf8f398ee 117 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 118 r <<= 8;
jloreto 0:e67bf8f398ee 119 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 120 r <<= 8;
jloreto 0:e67bf8f398ee 121 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 122 r <<= 1; // 32bits are aligned, now collecting bit_0
jloreto 0:e67bf8f398ee 123 r |= (_spi.write(0) >> 7);
jloreto 0:e67bf8f398ee 124 // we clocked 7 more bit so ILI waiting for 8th, we need to reset spi bus
jloreto 0:e67bf8f398ee 125 _CS = 1; // force CS HIG to interupt the cmd
jloreto 0:e67bf8f398ee 126 _CS = 0;
jloreto 0:e67bf8f398ee 127 return r;
jloreto 0:e67bf8f398ee 128 }
jloreto 0:e67bf8f398ee 129 unsigned int SPI8::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
jloreto 0:e67bf8f398ee 130 {
jloreto 0:e67bf8f398ee 131 unsigned int r=0;
jloreto 0:e67bf8f398ee 132 for(int regparam=1; regparam<4; regparam++) // when reading EXTC regs, first parameter is always dummy, so start with 1
jloreto 0:e67bf8f398ee 133 {
jloreto 0:e67bf8f398ee 134 wr_cmd8(SPIreadenablecmd); // spi-in enable cmd, 0xD9 (ili9341) or 0xFB (ili9488) or don't know
jloreto 0:e67bf8f398ee 135 wr_data8(0xF0|regparam); // in low nibble specify which reg parameter we want
jloreto 0:e67bf8f398ee 136 wr_cmd8(reg); // now send cmd (select register we want to read)
jloreto 0:e67bf8f398ee 137 r <<= 8;
jloreto 0:e67bf8f398ee 138 r |= _spi.write(0);
jloreto 0:e67bf8f398ee 139 // r = _spi.write(0) >> 8; for 16bit
jloreto 0:e67bf8f398ee 140 }
jloreto 0:e67bf8f398ee 141 _CS = 1; // force CS HIG to interupt the cmd
jloreto 0:e67bf8f398ee 142 _CS = 0;
jloreto 0:e67bf8f398ee 143 return r;
jloreto 0:e67bf8f398ee 144 }
jloreto 0:e67bf8f398ee 145 // ILI932x specific
jloreto 0:e67bf8f398ee 146 void SPI8::dummyread()
jloreto 0:e67bf8f398ee 147 {
jloreto 0:e67bf8f398ee 148 _spi.write(0); // dummy read
jloreto 0:e67bf8f398ee 149 }
jloreto 0:e67bf8f398ee 150 // ILI932x specific
jloreto 0:e67bf8f398ee 151 void SPI8::reg_select(unsigned char reg, bool forread)
jloreto 0:e67bf8f398ee 152 {
jloreto 0:e67bf8f398ee 153 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 154 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 155 _spi.write(0x70);
jloreto 0:e67bf8f398ee 156 _spi.write(0); // write MSB
jloreto 0:e67bf8f398ee 157 _spi.write(reg); // write LSB
jloreto 0:e67bf8f398ee 158 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 159 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 160 if(forread) _spi.write(0x73);
jloreto 0:e67bf8f398ee 161 else _spi.write(0x72);
jloreto 0:e67bf8f398ee 162 }
jloreto 0:e67bf8f398ee 163 // ILI932x specific
jloreto 0:e67bf8f398ee 164 void SPI8::reg_write(unsigned char reg, unsigned short data)
jloreto 0:e67bf8f398ee 165 {
jloreto 0:e67bf8f398ee 166 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 167 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 168 _spi.write(0x70);
jloreto 0:e67bf8f398ee 169 _spi.write(0); // write MSB
jloreto 0:e67bf8f398ee 170 _spi.write(reg); // write LSB
jloreto 0:e67bf8f398ee 171 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 172 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 173 _spi.write(0x72);
jloreto 0:e67bf8f398ee 174 _spi.write(data>>8);
jloreto 0:e67bf8f398ee 175 _spi.write(data&0xFF);
jloreto 0:e67bf8f398ee 176 }
jloreto 0:e67bf8f398ee 177 // ILI932x specific
jloreto 0:e67bf8f398ee 178 unsigned short SPI8::reg_read(unsigned char reg)
jloreto 0:e67bf8f398ee 179 {
jloreto 0:e67bf8f398ee 180 unsigned short r=0;
jloreto 0:e67bf8f398ee 181 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 182 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 183 _spi.write(0x70);
jloreto 0:e67bf8f398ee 184 _spi.write(0); // write MSB
jloreto 0:e67bf8f398ee 185 _spi.write(reg); // write LSB
jloreto 0:e67bf8f398ee 186 _CS = 1; //fixme: really needed?
jloreto 0:e67bf8f398ee 187 _CS = 0; //fixme: really needed?
jloreto 0:e67bf8f398ee 188 _spi.write(0x73);
jloreto 0:e67bf8f398ee 189 _spi.write(0); // dummy read
jloreto 0:e67bf8f398ee 190 r = _spi.write(0); // read 8bit
jloreto 0:e67bf8f398ee 191 r <<= 8;
jloreto 0:e67bf8f398ee 192 r |= _spi.write(0); // read 8bit
jloreto 0:e67bf8f398ee 193 return r;
jloreto 0:e67bf8f398ee 194 }
jloreto 0:e67bf8f398ee 195 void SPI8::hw_reset()
jloreto 0:e67bf8f398ee 196 {
jloreto 0:e67bf8f398ee 197 wait_ms(15);
jloreto 0:e67bf8f398ee 198 _DC = 1;
jloreto 0:e67bf8f398ee 199 _CS = 1;
jloreto 0:e67bf8f398ee 200 _reset = 0; // display reset
jloreto 0:e67bf8f398ee 201 wait_ms(2);
jloreto 0:e67bf8f398ee 202 _reset = 1; // end reset
jloreto 0:e67bf8f398ee 203 wait_ms(100);
jloreto 0:e67bf8f398ee 204 }
jloreto 0:e67bf8f398ee 205 void SPI8::BusEnable(bool enable)
jloreto 0:e67bf8f398ee 206 {
jloreto 0:e67bf8f398ee 207 _CS = enable ? 0:1;
jloreto 0:e67bf8f398ee 208 }