Refactor to make the LCD initialization be data driven code
This commit is contained in:
Henryk Plötz
parent
e1de1b4167
commit
ab0c2ab4e7
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@ -9,9 +9,106 @@
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#include "basic/config.h"
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#include "usb/usbmsc.h"
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enum display_type {
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DISPLAY_TYPE_N1200 = 0,
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DISPLAY_TYPE_N1600 = 1,
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};
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#define DISPLAY_N1200 0
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#define DISPLAY_N1600 1
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enum command_type {
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COMMAND_TYPE_CMD = 0,
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COMMAND_TYPE_DATA = 1,
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};
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struct display_macro {
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enum command_type type:1;
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unsigned int data:8;
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unsigned int delay_after:7;
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} __attribute__((packed));
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/* Small Nokia 1200 LCD docs:
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* clear/ set
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* on 0xae / 0xaf
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* invert 0xa6 / 0xa7
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* mirror-x 0xA0 / 0xA1
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* mirror-y 0xc7 / 0xc8
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*
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* 0x20+x contrast (0=black - 0x2e)
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* 0x40+x offset in rows from top (-0x7f)
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* 0x80+x contrast? (0=black -0x9f?)
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* 0xd0+x black lines from top? (-0xdf?)
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*
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*/
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/* Decoded:
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* E2: Internal reset
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* AF: Display on/off: DON = 1
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* A1: undefined?
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* A4: all on/normal: DAL = 0
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* 2F: charge pump on/off: PC = 1
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* B0: set y address: Y[0-3] = 0
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* 10: set x address (upper bits): X[6-4] = 0
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*/
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static const struct display_macro INIT_N1200[] = {
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{COMMAND_TYPE_CMD, 0xE2, 5},
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{COMMAND_TYPE_CMD, 0xAF},
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{COMMAND_TYPE_CMD, 0xA1},
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{COMMAND_TYPE_CMD, 0x2F},
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{COMMAND_TYPE_CMD, 0xB0},
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{COMMAND_TYPE_CMD, 0x10},
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};
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/* Decoded:
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* CMD 36: MADCTL (argument missing!)
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* CMD 29: DISPON
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* CMD BA: Data order (1)
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* DAT 07: ignored?
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* CMD 15: undefined?
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* DAT 25: ignored?
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* DAT 3F: ignored?
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* CMD 11: sleep out
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* CMD 13: normal display mode on
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* CMD 37: set scroll entry point
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* DAT 00: scroll entry point
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* CMD 3A: interface pixel format
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* DAT 05: 16 bit/pixel
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* CMD 2A: column address set
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* DAT 0 : xs
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* DAT 98-1 : xe
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* CMD 2B: page address set
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* DAT 0 : ys
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* DAT 70-1 : ye
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*/
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static const struct display_macro INIT_N1600[] = {
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{COMMAND_TYPE_CMD, 0x01, 10},
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{COMMAND_TYPE_CMD, 0x36},
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{COMMAND_TYPE_CMD, 0x29},
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{COMMAND_TYPE_CMD, 0xBA},
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{COMMAND_TYPE_DATA, 0x07},
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{COMMAND_TYPE_CMD, 0x15},
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{COMMAND_TYPE_DATA, 0x25},
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{COMMAND_TYPE_DATA, 0x3F},
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{COMMAND_TYPE_CMD, 0x11},
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{COMMAND_TYPE_CMD, 0x13},
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{COMMAND_TYPE_CMD, 0x37},
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{COMMAND_TYPE_DATA, 0x00},
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{COMMAND_TYPE_CMD, 0x3A},
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{COMMAND_TYPE_DATA, 0x05},
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{COMMAND_TYPE_CMD, 0x2A},
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{COMMAND_TYPE_DATA, 0x00},
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{COMMAND_TYPE_DATA, 98-1},
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{COMMAND_TYPE_CMD, 0x2B},
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{COMMAND_TYPE_DATA, 0},
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{COMMAND_TYPE_DATA, 70-1},
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};
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struct display_descriptor {
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const struct display_macro * init_macro;
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int init_macro_length;
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};
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const struct display_descriptor DISPLAY_DESCRIPTORS[] = {
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[DISPLAY_TYPE_N1200] = { INIT_N1200, sizeof(INIT_N1200)/sizeof(INIT_N1200[0]) },
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[DISPLAY_TYPE_N1600] = { INIT_N1600, sizeof(INIT_N1600)/sizeof(INIT_N1600[0]) },
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};
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/**************************************************************************/
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/* Utility routines to manage nokia display */
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@ -20,10 +117,9 @@
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uint8_t lcdBuffer[RESX*RESY_B];
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uint32_t intstatus; // Caches USB interrupt state
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// (need to disable MSC while displaying)
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uint8_t displayType;
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enum display_type displayType;
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const struct display_descriptor *displayDescriptor;
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#define TYPE_CMD 0
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#define TYPE_DATA 1
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static void lcd_select() {
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#if CFG_USBMSC
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@ -146,83 +242,16 @@ void lcdInit(void) {
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id=lcdRead(220); // ID3
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if(id==14)
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displayType=DISPLAY_N1600;
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displayType=DISPLAY_TYPE_N1600;
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else /* ID3 == 48 */
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displayType=DISPLAY_N1200;
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displayType=DISPLAY_TYPE_N1200;
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/* Small Nokia 1200 LCD docs:
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* clear/ set
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* on 0xae / 0xaf
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* invert 0xa6 / 0xa7
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* mirror-x 0xA0 / 0xA1
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* mirror-y 0xc7 / 0xc8
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*
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* 0x20+x contrast (0=black - 0x2e)
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* 0x40+x offset in rows from top (-0x7f)
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* 0x80+x contrast? (0=black -0x9f?)
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* 0xd0+x black lines from top? (-0xdf?)
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*
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*/
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displayDescriptor = DISPLAY_DESCRIPTORS + displayType;
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lcd_select();
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if(displayType==DISPLAY_N1200){
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/* Decoded:
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* E2: Internal reset
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* AF: Display on/off: DON = 1
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* A1: undefined?
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* A4: all on/normal: DAL = 0
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* 2F: charge pump on/off: PC = 1
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* B0: set y address: Y[0-3] = 0
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* 10: set x address (upper bits): X[6-4] = 0
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*/
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static uint8_t initseq[]= { 0xE2,0xAF, // Display ON
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0xA1, // Mirror-X
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0xA4, 0x2F, 0xB0, 0x10};
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int i = 0;
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while(i<sizeof(initseq)){
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lcdWrite(TYPE_CMD,initseq[i++]);
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delayms(5); // actually only needed after the first
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}
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}else{ /* displayType==DISPLAY_N1600 */
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static uint8_t initseq_d[] = {
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/* Decoded:
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* CMD 36: MADCTL (argument missing!)
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* CMD 29: DISPON
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* CMD BA: Data order (1)
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* DAT 07: ignored?
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* CMD 15: undefined?
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* DAT 25: ignored?
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* DAT 3F: ignored?
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* CMD 11: sleep out
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* CMD 13: normal display mode on
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* CMD 37: set scroll entry point
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* DAT 00: scroll entry point
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* CMD 3A: interface pixel format
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* DAT 05: 16 bit/pixel
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* CMD 2A: column address set
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* DAT 0 : xs
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* DAT 98-1 : xe
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* CMD 2B: page address set
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* DAT 0 : ys
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* DAT 70-1 : ye
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*/
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0x36,
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0x29, 0xBA, 0x07,
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0x15, 0x25, 0x3f,
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0x11, 0x13, 0x37,
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0x00, 0x3A, 0x05,
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0x2A, 0, 98-1,
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0x2B, 0, 70-1};
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uint32_t initseq_c = ~ 0x12BA7; // command/data bitstring
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int i = 0;
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lcdWrite(TYPE_CMD,0x01); //sw reset
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delayms(10);
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while(i<sizeof(initseq_d)){
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lcdWrite(initseq_c&1, initseq_d[i++]);
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initseq_c = initseq_c >> 1;
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}
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for(int i=0; i<displayDescriptor->init_macro_length; i++) {
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lcdWrite(displayDescriptor->init_macro[i].type, displayDescriptor->init_macro[i].data);
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delayms(displayDescriptor->init_macro[i].delay_after);
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}
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lcd_deselect();
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}
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@ -261,8 +290,8 @@ bool lcdGetPixel(char x, char y){
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// Color display hepler functions
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static void _helper_pixel16(uint16_t color){
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lcdWrite(TYPE_DATA,color>>8);
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lcdWrite(TYPE_DATA,color&0xFF);
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lcdWrite(COMMAND_TYPE_DATA,color>>8);
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lcdWrite(COMMAND_TYPE_DATA,color&0xFF);
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}
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static void _helper_hline(uint16_t color){
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@ -278,10 +307,10 @@ void lcdDisplay(void) {
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char byte;
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lcd_select();
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if(displayType==DISPLAY_N1200){
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lcdWrite(TYPE_CMD,0xB0);
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lcdWrite(TYPE_CMD,0x10);
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lcdWrite(TYPE_CMD,0x00);
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if(displayType==DISPLAY_TYPE_N1200){
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lcdWrite(COMMAND_TYPE_CMD,0xB0);
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lcdWrite(COMMAND_TYPE_CMD,0x10);
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lcdWrite(COMMAND_TYPE_CMD,0x00);
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uint16_t i,page;
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for(page=0; page<RESY_B;page++) {
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for(i=0; i<RESX; i++) {
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@ -293,10 +322,10 @@ void lcdDisplay(void) {
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if (GLOBAL(lcdinvert))
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byte=~byte;
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lcdWrite(TYPE_DATA,byte);
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lcdWrite(COMMAND_TYPE_DATA,byte);
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}
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}
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} else { /* displayType==DISPLAY_N1600 */
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} else { /* displayType==DISPLAY_TYPE_N1600 */
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unsigned char r=THECOLOR_R,g=THECOLOR_G,b=THECOLOR_B;
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unsigned char br=0xFF, bg=0xFF, bb=0xFF;
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unsigned char frame_r=0x00, frame_g=0x00, frame_b=0x80;
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@ -308,7 +337,7 @@ void lcdDisplay(void) {
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framecolor= ((frame_r&0xF8) << 8) | ((frame_g&0xFC)<<3) | ((frame_b&0xF8) >> 3);
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backcolor= ((br&0xF8) << 8) | ((bg&0xFC)<<3) | ((bb&0xF8) >> 3);
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lcdWrite(TYPE_CMD,0x2C);
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lcdWrite(COMMAND_TYPE_CMD,0x2C);
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//top line of the frame...
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_helper_hline(framecolor);
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@ -346,13 +375,13 @@ inline void lcdInvert(void) {
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void lcdSetContrast(int c) {
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lcd_select();
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if(displayType==DISPLAY_N1200){
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if(displayType==DISPLAY_TYPE_N1200){
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if(c<0x1F)
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lcdWrite(TYPE_CMD,0x80+c);
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}else{ /* displayType==DISPLAY_N1600 */
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lcdWrite(COMMAND_TYPE_CMD,0x80+c);
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}else{ /* displayType==DISPLAY_TYPE_N1600 */
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if(c<0x40) {
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lcdWrite(TYPE_CMD,0x25);
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lcdWrite(TYPE_DATA,4*c);
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lcdWrite(COMMAND_TYPE_CMD,0x25);
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lcdWrite(COMMAND_TYPE_DATA,4*c);
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};
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}
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lcd_deselect();
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@ -362,7 +391,7 @@ void lcdSetInvert(int c) {
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lcd_select();
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/* it doesn't harm N1600, save space */
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// if(displayType==DISPLAY_N1200)
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lcdWrite(TYPE_CMD,(c&1)+0xa6);
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lcdWrite(COMMAND_TYPE_CMD,(c&1)+0xa6);
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lcd_deselect();
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};
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