Stepan Smejkal / UniGraphic

.

Protocols/SPI16.cpp@4:12ba0ecc2c1f, 2015-02-15 (annotated)

Committer:
Geremia
Date:
Sun Feb 15 20:06:07 2015 +0000
Revision:
4:12ba0ecc2c1f
Parent:
1:ff019d22b275
Child:
5:b222a9461d6b
Added PAR16, separated 16bit writes for cmd parameters and pixeldata

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 4:12ba0ecc2c1f 1 /* mbed UniGraphic library - SPI16 protocol class
Geremia 4:12ba0ecc2c1f 2 * Copyright (c) 2015 Giuliano Dianda
Geremia 4:12ba0ecc2c1f 3 * Released under the MIT License: http://mbed.org/license/mit
Geremia 4:12ba0ecc2c1f 4 *
Geremia 4:12ba0ecc2c1f 5 * Derived work of:
Geremia 4:12ba0ecc2c1f 6 *
Geremia 4:12ba0ecc2c1f 7 * mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
Geremia 4:12ba0ecc2c1f 8 * Copyright (c) 2013 Peter Drescher - DC2PD
Geremia 4:12ba0ecc2c1f 9 *
Geremia 4:12ba0ecc2c1f 10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Geremia 4:12ba0ecc2c1f 11 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Geremia 4:12ba0ecc2c1f 12 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Geremia 4:12ba0ecc2c1f 13 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Geremia 4:12ba0ecc2c1f 14 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Geremia 4:12ba0ecc2c1f 15 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Geremia 4:12ba0ecc2c1f 16 * THE SOFTWARE.
Geremia 4:12ba0ecc2c1f 17 */
Geremia 4:12ba0ecc2c1f 18
Geremia 1:ff019d22b275 19 #include "SPI16.h"
Geremia 1:ff019d22b275 20 //#define USE_CS
Geremia 1:ff019d22b275 21
Geremia 1:ff019d22b275 22 SPI16::SPI16(int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC)
Geremia 1:ff019d22b275 23 : _CS(CS), _spi(mosi, miso, sclk), _reset(reset), _DC(DC)
Geremia 1:ff019d22b275 24 {
Geremia 1:ff019d22b275 25 _reset = 1;
Geremia 1:ff019d22b275 26 _DC=1;
Geremia 1:ff019d22b275 27 _CS=1;
Geremia 1:ff019d22b275 28 _spi.format(16,0); // 8 bit spi mode 0
Geremia 1:ff019d22b275 29 // _spi.frequency(12000000); // 10 Mhz SPI clock, 12mhz for F411
Geremia 1:ff019d22b275 30 _spi.frequency(Hz);
Geremia 1:ff019d22b275 31 hw_reset();
Geremia 1:ff019d22b275 32 }
Geremia 1:ff019d22b275 33
Geremia 1:ff019d22b275 34 void SPI16::wr_cmd8(unsigned char cmd)
Geremia 1:ff019d22b275 35 {
Geremia 1:ff019d22b275 36 #ifdef USE_CS
Geremia 1:ff019d22b275 37 _CS = 0;
Geremia 1:ff019d22b275 38 #endif
Geremia 1:ff019d22b275 39 _spi.format(8,0); // it takes time, better use wr_cmd16 with NOP cmd
Geremia 1:ff019d22b275 40 _DC.write(0); // 0=cmd
Geremia 1:ff019d22b275 41 _spi.write(cmd); // write 8bit
Geremia 1:ff019d22b275 42 _spi.format(16,0);
Geremia 1:ff019d22b275 43 #ifdef USE_CS
Geremia 1:ff019d22b275 44 _CS = 1;
Geremia 1:ff019d22b275 45 #endif
Geremia 1:ff019d22b275 46 }
Geremia 1:ff019d22b275 47 void SPI16::wr_data8(unsigned char data)
Geremia 1:ff019d22b275 48 {
Geremia 1:ff019d22b275 49 #ifdef USE_CS
Geremia 1:ff019d22b275 50 _CS = 0;
Geremia 1:ff019d22b275 51 #endif
Geremia 1:ff019d22b275 52 _spi.format(8,0); // it takes time, check prev cmd parameter, in case use wr_data16 with repeated byte
Geremia 1:ff019d22b275 53 _DC.write(1); // 1=data
Geremia 1:ff019d22b275 54 _spi.write(data); // write 8bit
Geremia 1:ff019d22b275 55 _spi.format(16,0);
Geremia 1:ff019d22b275 56 #ifdef USE_CS
Geremia 1:ff019d22b275 57 _CS = 1;
Geremia 1:ff019d22b275 58 #endif
Geremia 1:ff019d22b275 59 }
Geremia 1:ff019d22b275 60 void SPI16::wr_cmd16(unsigned short cmd)
Geremia 1:ff019d22b275 61 {
Geremia 1:ff019d22b275 62 #ifdef USE_CS
Geremia 1:ff019d22b275 63 _CS = 0;
Geremia 1:ff019d22b275 64 #endif
Geremia 1:ff019d22b275 65 _DC.write(0); // 0=cmd
Geremia 1:ff019d22b275 66 _spi.write(cmd); // write 16bit
Geremia 1:ff019d22b275 67 #ifdef USE_CS
Geremia 1:ff019d22b275 68 _CS = 1;
Geremia 1:ff019d22b275 69 #endif
Geremia 1:ff019d22b275 70 }
Geremia 1:ff019d22b275 71 void SPI16::wr_data16(unsigned short data)
Geremia 1:ff019d22b275 72 {
Geremia 1:ff019d22b275 73 #ifdef USE_CS
Geremia 1:ff019d22b275 74 _CS = 0;
Geremia 1:ff019d22b275 75 #endif
Geremia 1:ff019d22b275 76 _DC.write(1); // 1=data
Geremia 1:ff019d22b275 77 _spi.write(data); // write 16bit
Geremia 1:ff019d22b275 78 #ifdef USE_CS
Geremia 1:ff019d22b275 79 _CS = 1;
Geremia 1:ff019d22b275 80 #endif
Geremia 1:ff019d22b275 81 }
Geremia 4:12ba0ecc2c1f 82 void SPI16::wr_gram(unsigned short data)
Geremia 4:12ba0ecc2c1f 83 {
Geremia 4:12ba0ecc2c1f 84 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 85 _CS = 0;
Geremia 4:12ba0ecc2c1f 86 #endif
Geremia 4:12ba0ecc2c1f 87 _DC.write(1); // 1=data
Geremia 4:12ba0ecc2c1f 88 _spi.write(data); // write 16bit
Geremia 4:12ba0ecc2c1f 89 #ifdef USE_CS
Geremia 4:12ba0ecc2c1f 90 _CS = 1;
Geremia 4:12ba0ecc2c1f 91 #endif
Geremia 4:12ba0ecc2c1f 92 }
Geremia 4:12ba0ecc2c1f 93 void SPI16::wr_gram(unsigned short data, unsigned int count)
Geremia 1:ff019d22b275 94 {
Geremia 1:ff019d22b275 95 #ifdef USE_CS
Geremia 1:ff019d22b275 96 _CS = 0;
Geremia 1:ff019d22b275 97 #endif
Geremia 1:ff019d22b275 98 _DC.write(1); // 1=data
Geremia 1:ff019d22b275 99 while(count)
Geremia 1:ff019d22b275 100 {
Geremia 1:ff019d22b275 101 _spi.write(data);
Geremia 1:ff019d22b275 102 count--;
Geremia 1:ff019d22b275 103 }
Geremia 1:ff019d22b275 104 #ifdef USE_CS
Geremia 1:ff019d22b275 105 _CS = 1;
Geremia 1:ff019d22b275 106 #endif
Geremia 1:ff019d22b275 107 }
Geremia 4:12ba0ecc2c1f 108 void SPI16::wr_grambuf(unsigned short* data, unsigned int lenght)
Geremia 1:ff019d22b275 109 {
Geremia 1:ff019d22b275 110 #ifdef USE_CS
Geremia 1:ff019d22b275 111 _CS = 0;
Geremia 1:ff019d22b275 112 #endif
Geremia 1:ff019d22b275 113 _DC.write(1); // 1=data
Geremia 1:ff019d22b275 114 while(lenght)
Geremia 1:ff019d22b275 115 {
Geremia 1:ff019d22b275 116 _spi.write(*data);
Geremia 1:ff019d22b275 117 data++;
Geremia 1:ff019d22b275 118 lenght--;
Geremia 1:ff019d22b275 119 }
Geremia 1:ff019d22b275 120 #ifdef USE_CS
Geremia 1:ff019d22b275 121 _CS = 1;
Geremia 1:ff019d22b275 122 #endif
Geremia 1:ff019d22b275 123 }
Geremia 1:ff019d22b275 124 void SPI16::hw_reset()
Geremia 1:ff019d22b275 125 {
Geremia 1:ff019d22b275 126 wait_ms(15);
Geremia 1:ff019d22b275 127 _DC = 1;
Geremia 1:ff019d22b275 128 // _CS = 1;
Geremia 1:ff019d22b275 129 _CS = 0;
Geremia 1:ff019d22b275 130 _reset = 0; // display reset
Geremia 1:ff019d22b275 131 wait_us(50);
Geremia 1:ff019d22b275 132 _reset = 1; // end reset
Geremia 1:ff019d22b275 133 wait_ms(15);
Geremia 1:ff019d22b275 134 #ifndef USE_CS
Geremia 1:ff019d22b275 135 _CS=0; // put CS low now and forever
Geremia 1:ff019d22b275 136 #endif
Geremia 1:ff019d22b275 137 }
Geremia 1:ff019d22b275 138 void SPI16::BusEnable(bool enable)
Geremia 1:ff019d22b275 139 {
Geremia 1:ff019d22b275 140 _CS = enable ? 0:1;
Geremia 1:ff019d22b275 141 }