Junaid Ahmed
Generate the maximum sampling rate
Diff: SLCD/SLCD.cpp
- Revision:
- 0:d62b58e30f71
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SLCD/SLCD.cpp Sat Feb 15 01:05:44 2014 +0000
@@ -0,0 +1,243 @@
+#include "SLCD.h"
+#include "LCDconfig.h"
+
+
+const uint8_t WF_ORDERING_TABLE[ ] =
+{
+ CHAR1a, // LCD81 --- Pin:5 LCDnAddress=51
+ CHAR1b, // LCD82 --- Pin:6 LCDnAddress=52
+ CHAR2a, // LCD83 --- Pin:7 LCDnAddress=53
+ CHAR2b, // LCD84 --- Pin:8 LCDnAddress=54
+ CHAR3a, // LCD85 --- Pin:9 LCDnAddress=55
+ CHAR3b, // LCD86 --- Pin:10 LCDnAddress=56
+ CHAR4a, // LCD87 --- Pin:11 LCDnAddress=57
+ CHAR4b, // LCD88 --- Pin:12 LCDnAddress=58
+ CHARCOM0, // LCD77 --- Pin:1 LCDnAddress=4D
+ CHARCOM1, // LCD78 --- Pin:2 LCDnAddress=4E
+ CHARCOM2, // LCD79 --- Pin:3 LCDnAddress=4F
+ CHARCOM3, // LCD80 --- Pin:4 LCDnAddress=50
+};
+
+const char ASCII_TO_WF_CODIFICATION_TABLE [ ] =
+{
+
+ /*
+ segA
+ ________
+ | |
+ segF | | segB
+ | |
+ -segG--
+ | |
+ segE | | segC
+ |________|
+ segD
+ */
+
+( SEGD+ SEGE+ SEGF+!SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = 0, offset=0
+(!SEGD+!SEGE+!SEGF+!SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = 1, offset=4
+( SEGD+ SEGE+!SEGF+ SEGG) , (!SEGC+ SEGB+ SEGA) ,//Char = 2, offset=8
+( SEGD+!SEGE+!SEGF+ SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = 3, offset=12
+(!SEGD+!SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = 4, offset=16
+( SEGD+!SEGE+ SEGF+ SEGG) , ( SEGC+!SEGB+ SEGA) ,//Char = 5, offset=20
+( SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+!SEGB+ SEGA) ,//Char = 6, offset=24
+(!SEGD+!SEGE+!SEGF+!SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = 7, offset=28
+( SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = 8, offset=32
+( SEGD+!SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = 9, offset=36
+(!SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = :, offset=40
+(!SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = ;, offset=44
+(!SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = <, offset=48
+( SEGD+!SEGE+!SEGF+ SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = =, offset=52
+(!SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = >, offset=56
+(!SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = ?, offset=60
+( SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = @, offset=64
+(!SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = A, offset=68
+( SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+!SEGB+!SEGA) ,//Char = B, offset=72
+( SEGD+ SEGE+ SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = C, offset=76
+( SEGD+ SEGE+!SEGF+ SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = D, offset=80
+( SEGD+ SEGE+ SEGF+ SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = E, offset=84
+(!SEGD+ SEGE+ SEGF+ SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = F, offset=88
+( SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+!SEGB+ SEGA) ,//Char = G, offset=92
+(!SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = H, offset=96
+(!SEGD+!SEGE+!SEGF+!SEGG) , ( SEGC+!SEGB+!SEGA) ,//Char = I, offset=100
+( SEGD+ SEGE+!SEGF+!SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = J, offset=104
+(!SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+!SEGB+ SEGA) ,//Char = K, offset=108
+( SEGD+ SEGE+ SEGF+!SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = L, offset=112
+(!SEGD+ SEGE+ SEGF+!SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = M, offset=116
+(!SEGD+ SEGE+!SEGF+ SEGG) , ( SEGC+!SEGB+!SEGA) ,//Char = N, offset=120
+( SEGD+ SEGE+!SEGF+ SEGG) , ( SEGC+!SEGB+!SEGA) ,//Char = O, offset=124
+(!SEGD+ SEGE+ SEGF+ SEGG) , (!SEGC+ SEGB+ SEGA) ,//Char = P, offset=128
+( SEGD+!SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+ SEGA) ,//Char = Q, offset=132
+(!SEGD+ SEGE+!SEGF+ SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = R, offset=136
+( SEGD+!SEGE+ SEGF+ SEGG) , ( SEGC+!SEGB+ SEGA) ,//Char = S, offset=140
+( SEGD+ SEGE+ SEGF+ SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = T, offset=144
+( SEGD+ SEGE+ SEGF+!SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = U, offset=148
+( SEGD+ SEGE+!SEGF+!SEGG) , ( SEGC+!SEGB+!SEGA) ,//Char = V, offset=152
+( SEGD+ SEGE+ SEGF+!SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = W, offset=156
+(!SEGD+ SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = X, offset=160
+( SEGD+!SEGE+ SEGF+ SEGG) , ( SEGC+ SEGB+!SEGA) ,//Char = Y, offset=164
+( SEGD+!SEGE+!SEGF+ SEGG) , (!SEGC+!SEGB+!SEGA) ,//Char = Z, offset=168
+( SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = [, offset=172
+( SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = \, offset=176
+( SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = ], offset=180
+( SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = ^, offset=184
+( SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = _, offset=188
+( SEGD+!SEGE+!SEGF+!SEGG) , (!SEGC+!SEGB+ SEGA) ,//Char = `, offset=192
+};
+
+SLCD::SLCD() {
+ init();
+ CharPosition = 0;
+}
+
+void SLCD::init(){
+ SIM->SCGC5 |= SIM_SCGC5_SLCD_MASK | SIM_SCGC5_PORTB_MASK | SIM_SCGC5_PORTC_MASK | SIM_SCGC5_PORTD_MASK | SIM_SCGC5_PORTE_MASK;
+
+ // configure pins for LCD operation
+ PORTC->PCR[20] = 0x00000000; //VLL2
+ PORTC->PCR[21] = 0x00000000; //VLL1
+ PORTC->PCR[22] = 0x00000000; //VCAP2
+ PORTC->PCR[23] = 0x00000000; //VCAP1
+ // Enable IRCLK
+ MCG->C1 = MCG_C1_IRCLKEN_MASK | MCG_C1_IREFSTEN_MASK;
+ MCG->C2 &= ~MCG_C2_IRCS_MASK ; //0 32KHZ internal reference clock; 1= 4MHz irc
+ LCD->GCR = 0x0;
+ LCD->AR = 0x0;
+ // LCD configurartion
+ LCD->GCR = ( LCD_GCR_RVEN_MASK*_LCDRVEN
+ | LCD_GCR_RVTRIM(_LCDRVTRIM) //0-15
+ | LCD_GCR_CPSEL_MASK*_LCDCPSEL
+ | LCD_GCR_LADJ(_LCDLOADADJUST) //0-3
+ | LCD_GCR_VSUPPLY_MASK*_LCDSUPPLY //0-1
+ |!LCD_GCR_FDCIEN_MASK
+ | LCD_GCR_ALTDIV(_LCDALTDIV) //0-3
+ |!LCD_GCR_LCDDOZE_MASK
+ |!LCD_GCR_LCDSTP_MASK
+ |!LCD_GCR_LCDEN_MASK //WILL BE ENABLE ON SUBSEQUENT STEP
+ | LCD_GCR_SOURCE_MASK*_LCDCLKSOURCE
+ | LCD_GCR_ALTSOURCE_MASK*_LCDALRCLKSOURCE
+ | LCD_GCR_LCLK(_LCDLCK) //0-7
+ | LCD_GCR_DUTY(_LCDDUTY) //0-7
+ );
+ uint8_t i;
+ uint32_t *p_pen;
+ uint8_t pen_offset; // 0 or 1
+ uint8_t pen_bit; // 0 to 31
+ LCD->PEN[0] = 0x0;
+ LCD->PEN[1] = 0x0;
+ LCD->BPEN[0] = 0x0;
+ LCD->BPEN[1] = 0x0;
+ p_pen = (uint32_t *)&LCD->PEN[0];
+ for (i=0;i<_LCDUSEDPINS;i++)
+ {
+ pen_offset = WF_ORDERING_TABLE[i]/32;
+ pen_bit = WF_ORDERING_TABLE[i]%32;
+ p_pen[pen_offset] |= 1 << pen_bit;
+ if (i>= _LCDFRONTPLANES) // Pin is a backplane
+ {
+ p_pen[pen_offset+2] |= 1 << pen_bit; // Enable BPEN
+ LCD->WF8B[(uint8_t)WF_ORDERING_TABLE[i]] = 1 << (i - _LCDFRONTPLANES); // fill with 0x01, 0x02, etc
+ }
+ }
+ LCD->GCR |= LCD_GCR_LCDEN_MASK;
+}
+
+int SLCD::_putc(int c) {
+ Write_Char(c);
+ return 0;
+}
+
+void SLCD::Write_Char (char lbValue) {
+ uint8_t char_val;
+ uint8_t temp;
+ uint8_t *lbpLCDWF;
+ uint8_t lbCounter;
+ uint16_t arrayOffset;
+ uint8_t position;
+
+ if (CharPosition >= _CHARNUM)
+ CharPosition = 0;
+ lbpLCDWF = (uint8_t *)&LCD->WF8B[0];
+ /* only ascii character if value not writeable write as @ */
+ if (lbValue>='a' && lbValue<='z') {
+ lbValue -= 32; // UpperCase
+ }
+ if (lbValue<ASCCI_TABLE_START || lbValue >ASCCI_TABLE_END) {
+ lbValue = BLANK_CHARACTER; // default value as space
+ }
+ lbValue -=ASCCI_TABLE_START; // Remove the offset to search in the ascci table
+ arrayOffset = (lbValue * _CHAR_SIZE); // Compensate matrix offset
+ // ensure bLCD position is in valid limit
+ lbCounter = 0; //number of writings to complete one char
+ while (lbCounter<_CHAR_SIZE) {
+ position = (CharPosition) *_LCDTYPE + lbCounter;
+ temp=0;
+ if (lbCounter==1) {
+ temp = lbpLCDWF[WF_ORDERING_TABLE[position]] & 0x01;//bit 0 has the special symbol information
+ }
+ char_val = ASCII_TO_WF_CODIFICATION_TABLE[arrayOffset + lbCounter];
+ lbpLCDWF[WF_ORDERING_TABLE[position]] = char_val | temp;
+ // if (char_val==0) lbCounter = _CHAR_SIZE; //end of this character
+ lbCounter++;
+ }
+ CharPosition++;
+}
+
+void SLCD::Home (void)
+ {
+ CharPosition = 0;
+ }
+
+void SLCD::Contrast (uint8_t lbContrast)
+{
+ lbContrast &= 0x0F; //Forced to the only values accepted
+ LCD->GCR |= LCD_GCR_RVTRIM(lbContrast);
+}
+
+void SLCD::All_Segments (int mode)
+{
+ uint8_t lbTotalBytes = _CHARNUM * _LCDTYPE;
+ uint8_t lbCounter=0;
+ uint8_t *lbpLCDWF;
+
+ lbpLCDWF = (uint8_t *)&LCD->WF8B[0];
+ while (lbCounter < lbTotalBytes)
+ {
+ if (mode==1){lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[lbCounter++]]=_ALLON;}
+ else {lbpLCDWF[WF_ORDERING_TABLE[lbCounter++]]=0;}
+ }
+}
+
+void SLCD::DP1 (int mode)
+{
+ uint8_t *lbpLCDWF;
+ lbpLCDWF = (uint8_t *)&LCD->WF8B[0];
+ if (mode==1){lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[1]]|=1;}
+ else {lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[1]]&=~1;}
+}
+
+void SLCD::DP2 (int mode)
+{
+ uint8_t *lbpLCDWF;
+ lbpLCDWF = (uint8_t *)&LCD->WF8B[0];
+ if (mode==1){lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[3]]|=1;}
+ else {lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[3]]&=~1;}
+}
+
+void SLCD::DP3 (int mode)
+{
+ uint8_t *lbpLCDWF;
+ lbpLCDWF = (uint8_t *)&LCD->WF8B[0];
+ if (mode==1){lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[5]]|=1;}
+ else {lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[5]]&=~1;}
+}
+
+void SLCD::Colon (int mode)
+{
+ uint8_t *lbpLCDWF;
+ lbpLCDWF = (uint8_t *)&LCD->WF8B[0];
+ if (mode==1){lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[7]]|=1;}
+ else {lbpLCDWF[(uint8_t)WF_ORDERING_TABLE[7]]&=~1;}
+}
+
+