--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/unigraphic/SPI8.cpp Tue Sep 20 23:50:45 2016 +0200
@@ -0,0 +1,209 @@
+ /* mbed UniGraphic library - SPI8 protocol class
+ * Copyright (c) 2015 Giuliano Dianda
+ * Released under the MIT License: http://mbed.org/license/mit
+ *
+ * Derived work of:
+ *
+ * mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
+ * Copyright (c) 2013 Peter Drescher - DC2PD
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "SPI8.h"
+
+
+SPI8::SPI8(int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC)
+ : _CS(CS), _spi(mosi, miso, sclk), _reset(reset), _DC(DC)
+{
+ _reset = 1;
+ _DC=1;
+ _CS=1;
+ _spi.format(8,0); // 8 bit spi mode 0
+ _spi.frequency(Hz);
+ hw_reset();
+}
+
+void SPI8::wr_cmd8(unsigned char cmd)
+{
+ _DC.write(0); // 0=cmd
+ _spi.write(cmd); // write 8bit
+ _DC.write(1); // 1=data next
+}
+void SPI8::wr_data8(unsigned char data)
+{
+ _spi.write(data); // write 8bit
+}
+
+void SPI8::wr_cmd16(unsigned short cmd)
+{
+ _DC.write(0); // 0=cmd
+ _spi.write(cmd>>8); // write 8bit
+ _spi.write(cmd&0xFF); // write 8bit
+ _DC.write(1); // 1=data next
+}
+void SPI8::wr_data16(unsigned short data)
+{
+ _spi.write(data>>8); // write 8bit
+ _spi.write(data&0xFF); // write 8bit
+}
+void SPI8::wr_gram(unsigned short data)
+{
+ _spi.write(data>>8); // write 8bit
+ _spi.write(data&0xFF); // write 8bit
+}
+void SPI8::wr_gram(unsigned short data, unsigned int count)
+{
+ if((data>>8)==(data&0xFF))
+ {
+ count<<=1;
+ while(count)
+ {
+ _spi.write(data); // write 8bit
+ count--;
+ }
+ }
+ else
+ {
+ while(count)
+ {
+ _spi.write(data>>8); // write 8bit
+ _spi.write(data&0xFF); // write 8bit
+ count--;
+ }
+ }
+}
+void SPI8::wr_grambuf(unsigned short* data, unsigned int lenght)
+{
+ while(lenght)
+ {
+ _spi.write((*data)>>8); // write 8bit
+ _spi.write((*data)&0xFF); // write 8bit
+ data++;
+ lenght--;
+ }
+}
+unsigned short SPI8::rd_gram(bool convert)
+{
+ unsigned int r=0;
+ _spi.write(0); // whole first byte is dummy
+ r |= _spi.write(0);
+ r <<= 8;
+ r |= _spi.write(0);
+ if(convert)
+ {
+ r <<= 8;
+ r |= _spi.write(0);
+ // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
+ // during reading, you read the raw 18bit gram
+ r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
+ }
+ _CS = 1; // force CS HIG to interupt the "read state"
+ _CS = 0;
+ return (unsigned short)r;
+}
+unsigned int SPI8::rd_reg_data32(unsigned char reg)
+{
+ wr_cmd8(reg);
+ unsigned int r=0;
+
+ r |= _spi.write(0); // we get only 7bit valid, first bit was the dummy cycle
+ r <<= 8;
+ r |= _spi.write(0);
+ r <<= 8;
+ r |= _spi.write(0);
+ r <<= 8;
+ r |= _spi.write(0);
+ r <<= 1; // 32bits are aligned, now collecting bit_0
+ r |= (_spi.write(0) >> 7);
+ // we clocked 7 more bit so ILI waiting for 8th, we need to reset spi bus
+ _CS = 1; // force CS HIG to interupt the cmd
+ _CS = 0;
+ return r;
+}
+unsigned int SPI8::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
+{
+ unsigned int r=0;
+ for(int regparam=1; regparam<4; regparam++) // when reading EXTC regs, first parameter is always dummy, so start with 1
+ {
+ wr_cmd8(SPIreadenablecmd); // spi-in enable cmd, 0xD9 (ili9341) or 0xFB (ili9488) or don't know
+ wr_data8(0xF0|regparam); // in low nibble specify which reg parameter we want
+ wr_cmd8(reg); // now send cmd (select register we want to read)
+ r <<= 8;
+ r |= _spi.write(0);
+ // r = _spi.write(0) >> 8; for 16bit
+ }
+ _CS = 1; // force CS HIG to interupt the cmd
+ _CS = 0;
+ return r;
+}
+// ILI932x specific
+void SPI8::dummyread()
+{
+ _spi.write(0); // dummy read
+}
+// ILI932x specific
+void SPI8::reg_select(unsigned char reg, bool forread)
+{
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x70);
+ _spi.write(0); // write MSB
+ _spi.write(reg); // write LSB
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ if(forread) _spi.write(0x73);
+ else _spi.write(0x72);
+}
+// ILI932x specific
+void SPI8::reg_write(unsigned char reg, unsigned short data)
+{
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x70);
+ _spi.write(0); // write MSB
+ _spi.write(reg); // write LSB
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x72);
+ _spi.write(data>>8);
+ _spi.write(data&0xFF);
+}
+// ILI932x specific
+unsigned short SPI8::reg_read(unsigned char reg)
+{
+ unsigned short r=0;
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x70);
+ _spi.write(0); // write MSB
+ _spi.write(reg); // write LSB
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x73);
+ _spi.write(0); // dummy read
+ r = _spi.write(0); // read 8bit
+ r <<= 8;
+ r |= _spi.write(0); // read 8bit
+ return r;
+}
+void SPI8::hw_reset()
+{
+ wait_ms(15);
+ _DC = 1;
+ _CS = 1;
+ _reset = 0; // display reset
+ wait_ms(2);
+ _reset = 1; // end reset
+ wait_ms(100);
+}
+void SPI8::BusEnable(bool enable)
+{
+ _CS = enable ? 0:1;
+}