Stepan Smejkal
.
Diff: Protocols/SPI16.cpp
- Revision:
- 20:14daa48ffd4c
- Parent:
- 11:b842b8e332cb
--- a/Protocols/SPI16.cpp Mon Mar 02 10:52:26 2015 +0000
+++ b/Protocols/SPI16.cpp Mon Mar 23 14:08:04 2015 +0000
@@ -17,7 +17,6 @@
*/
#include "SPI16.h"
-//#define USE_CS
SPI16::SPI16(int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC)
: _CS(CS), _spi(mosi, miso, sclk), _reset(reset), _DC(DC)
@@ -33,101 +32,52 @@
void SPI16::wr_cmd8(unsigned char cmd)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
_spi.format(8,0); // it takes time, better use wr_cmd16 with NOP cmd
_DC.write(0); // 0=cmd
_spi.write(cmd); // write 8bit
_spi.format(16,0);
-#ifdef USE_CS
- _CS = 1;
-#endif
+ _DC.write(1); // 1=data next
}
void SPI16::wr_data8(unsigned char data)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
_spi.format(8,0); // it takes time, check prev cmd parameter, in case use wr_data16 with repeated byte
- _DC.write(1); // 1=data
_spi.write(data); // write 8bit
_spi.format(16,0);
-#ifdef USE_CS
- _CS = 1;
-#endif
}
void SPI16::wr_cmd16(unsigned short cmd)
-{
-#ifdef USE_CS
- _CS = 0;
-#endif
+{
_DC.write(0); // 0=cmd
_spi.write(cmd); // write 16bit
-#ifdef USE_CS
- _CS = 1;
-#endif
+ _DC.write(1); // 1=data next
}
void SPI16::wr_data16(unsigned short data)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
- _DC.write(1); // 1=data
_spi.write(data); // write 16bit
-#ifdef USE_CS
- _CS = 1;
-#endif
}
void SPI16::wr_gram(unsigned short data)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
- _DC.write(1); // 1=data
_spi.write(data); // write 16bit
-#ifdef USE_CS
- _CS = 1;
-#endif
}
void SPI16::wr_gram(unsigned short data, unsigned int count)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
- _DC.write(1); // 1=data
while(count)
{
_spi.write(data);
count--;
}
-#ifdef USE_CS
- _CS = 1;
-#endif
}
void SPI16::wr_grambuf(unsigned short* data, unsigned int lenght)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
- _DC.write(1); // 1=data
while(lenght)
{
_spi.write(*data);
data++;
lenght--;
}
-#ifdef USE_CS
- _CS = 1;
-#endif
}
unsigned short SPI16::rd_gram(bool convert)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
unsigned int r=0;
- _DC.write(1); // 1=data
r |= _spi.write(0); // 16bit, whole first byte is dummy, second is red
r <<= 16;
r |= _spi.write(0);
@@ -138,20 +88,15 @@
r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
}
else r >>= 8;
-_CS = 1; // force CS HIG to interupt the "read state"
-#ifndef USE_CS //if CS is not used, force fixed LOW again
+ _CS = 1; // force CS HIG to interupt the "read state"
_CS = 0;
-#endif
+
return (unsigned short)r;
}
unsigned int SPI16::rd_reg_data32(unsigned char reg)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
wr_cmd8(reg);
unsigned int r=0;
- _DC.write(1);; // 1=data
r |= _spi.write(0); // we get only 15bit valid, first bit was the dummy cycle
r <<= 16;
@@ -160,9 +105,7 @@
r |= (_spi.write(0) >> 15);
// we clocked 15 more bit so ILI waiting for 16th, we need to reset spi bus
_CS = 1; // force CS HIG to interupt the cmd
-#ifndef USE_CS //if CS is not used, force fixed LOW again
_CS = 0;
-#endif
return r;
}
unsigned int SPI16::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
@@ -173,29 +116,71 @@
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)
- _DC.write(1); // 1=data
r <<= 8;
r |= (_spi.write(0) >> 8);
}
-_CS = 1; // force CS HIG to interupt the cmd
-#ifndef USE_CS //if CS is not used, force fixed LOW again
+ _CS = 1; // force CS HIG to interupt the cmd
_CS = 0;
-#endif
+
return r;
}
+// ILI932x specific
+void SPI16::dummyread()
+{
+ _spi.write(0); // dummy read
+}
+// ILI932x specific
+void SPI16::reg_select(unsigned char reg, bool forread)
+{
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x70); // write 0070
+ _spi.write(reg); // write 16bit
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ if(forread) _spi.write(0x73);
+ else _spi.write(0x72);
+}
+// ILI932x specific
+void SPI16::reg_write(unsigned char reg, unsigned short data)
+{
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x70); // write 0070
+ _spi.write(reg); // write 16bit
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x72); // write 0072
+ _spi.write(data); // write 16bit
+}
+// ILI932x specific
+unsigned short SPI16::reg_read(unsigned char reg)
+{
+ unsigned int r=0;
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x70); // write 0070
+ _spi.write(reg); // write 16bit
+ _CS = 1; //fixme: really needed?
+ _CS = 0; //fixme: really needed?
+ _spi.write(0x73); // write 0073
+ r |= _spi.write(0); // read 16bit, 8bit dummy + 8bit valid
+ r <<= 16;
+ r |= _spi.write(0); // read 16bit
+
+ _CS = 1; //fixme: to resync, maybe really needed
+ _CS = 0; //fixme: to resync, maybe really needed
+ return (r>>8);
+}
void SPI16::hw_reset()
{
wait_ms(15);
_DC = 1;
- // _CS = 1;
- _CS = 0;
+ _CS = 1;
_reset = 0; // display reset
- wait_us(50);
+ wait_ms(2);
_reset = 1; // end reset
- wait_ms(15);
-#ifndef USE_CS
- _CS=0; // put CS low now and forever
-#endif
+ wait_ms(100);
}
void SPI16::BusEnable(bool enable)
{