void ssd1306_writeStringSize2(char *str, uint32_t pos)
{
uint32_t i = 0, j;
ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0
ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0
ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
// for each chr in the string, print it to the display
while((*str != '\0') && ((i+1)*6*8 < 128*64)){
if(((*str-0x20) < 96) && (*str >= 0x20)){
for(j=0; j<5; j++){
ssd1306_data(font5x8[(*str-0x20)*5+j]);
}
}
else{
for(j=0; j<5; j++){
ssd1306_data(0);
}
}
ssd1306_data(0);
str++;
i++;
}
i = (128*64-i*6*8)/8;
while(i--){
ssd1306_data(0);
}
}
void SSD1306::display(void) {
ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0
ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0
ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) {
ssd1306_data(buffer[i]);
}
// i wonder why we have to do this (check datasheet)
if (SSD1306_LCDHEIGHT == 32) {
for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) {
ssd1306_data(0);
}
}
}
void ssd1306_displayBlock(SSD1306 *p, int row, int col, int col_count, int col_offset /* = 0 */)
{
if (!p) return;
/* for now always transmit whole image */
uint8_t rows = p->height;
uint8_t cols = p->width;
/* devide by 8 -- black/white display 8 Bits = 1 Byte = 8 Pixels */
uint8_t pagecount = rows >> 3;
uint8_t pagestart = row >> 3;
uint8_t pageend = pagestart + pagecount - 1;
uint8_t colstart = col;
uint8_t colend = col + col_count - 1;
ssd1306_command(p, SSD1306_MEMORYMODE);
ssd1306_command(p, SSD1306_MEMORY_MODE_VERT);
ssd1306_command(p, SSD1306_PAGEADDRESS);
ssd1306_command(p, pagestart);
ssd1306_command(p, pageend);
ssd1306_command(p, SSD1306_COLADDRESS);
ssd1306_command(p, colstart);
ssd1306_command(p, colend);
int length = col_count * pagecount;
ssd1306_data(p, p->bitmap, length);
}
void ssd1306_clr_gddram(void)
{
unsigned char x, y;
for (y=0; y<8; y++) {
ssd1306_set_pagecol(y, 0);
for (x=0; x<128; x++) {
ssd1306_data(0x00);
}
}
}
void ssd1306_clear_row_column(unsigned char row, unsigned char column_start, unsigned char column_end)
{
unsigned char x;
unsigned char y;
ssd1306_command(0xB0 + row);
ssd1306_command(0x01);
ssd1306_command(0x10);
for (x = column_start; x < column_end; x++) {
ssd1306_data(0x00);
}
}
void ssd1306_clear_row(unsigned char row)
{
unsigned char x;
unsigned char y;
ssd1306_command(0xB0 + row);
ssd1306_command(0x01);
ssd1306_command(0x10);
for (x = 0; x < WIDTH; x++) {
ssd1306_data(0x00);
}
}
void ssd1306_fill(unsigned char color)
{
unsigned char x;
unsigned char y;
for (y = 0; y < SEGMENTS; y++) {
ssd1306_command(0xB0 + y);
ssd1306_command(0x01);
ssd1306_command(0x10);
for (x = 0; x < WIDTH; x++) {
ssd1306_data(color);
}
}
}
void ssd1306_draw_8x16_string(unsigned char x, unsigned char y, const char *string)
{
unsigned char i;
const char *chr;
char printable_char;
for (chr = string; *chr != '\0'; chr++) {
printable_char = *chr - ' ';
if (x > 120) {
x = 0;
y++;
}
ssd1306_set_coordinate(x, y);
for (i = 0; i < SEGMENTS; i++) {
ssd1306_data(pgm_read_byte(&F8X16[printable_char * 16 + i]));
}
ssd1306_set_coordinate(x, y + 1);
for (i = 0; i < SEGMENTS; i++) {
ssd1306_data(pgm_read_byte(&F8X16[printable_char * 16 + i + 8]));
}
x += 8;
}
}
void ssd1306_draw_6x8_string(unsigned char x, unsigned char y, const char *string)
{
unsigned char i;
const char *chr;
char printable_char;
for (chr = string; *chr != '\0'; chr++) {
printable_char = *chr - ' ';
if (x > 126) {
x = 0;
y++;
}
ssd1306_set_coordinate(x, y);
for (i = 0; i < 6; i++) {
ssd1306_data(pgm_read_byte(&F6x8[printable_char][i]));
}
x += 6;
}
}
void ssd1306_init(void)
{
uint32_t i;
// init necessary io
// enable clocks for PORTA & PORTB
SIM_SCGC5 |= SIM_SCGC5_PORTA_MASK;
SIM_SCGC5 |= SIM_SCGC5_PORTB_MASK;
// pin 13, B5 output for rst
PORTB_PCR5 = PORT_PCR_MUX(1); // gpio
GPIOB_PCOR = (1 << 5); // low initially
GPIOB_PDDR |= (1 << 5); // output mode
// pin 6, a6 output for dc
PORTA_PCR6 = PORT_PCR_MUX(1); // gpio
GPIOA_PCOR = (1 << 6); // low initially
GPIOA_PDDR |= (1 << 6); // output mode
// init spi0
// configure io pins for spi
// PTA5, 7, PTB0
PORTA_PCR5 = PORT_PCR_MUX(3); // CS
PORTA_PCR7 = PORT_PCR_MUX(3); // MOSI
PORTB_PCR0 = PORT_PCR_MUX(3); // SCK
// enable SPI0 module
SIM_SCGC4 |= SIM_SCGC4_SPI0_MASK;
// configure as master, cs output driven automatically, CPOL=1
SPI0_C1 |= (SPI_C1_MSTR_MASK | SPI_C1_SSOE_MASK | SPI_C1_CPOL_MASK);
SPI0_C2 |= SPI_C2_MODFEN_MASK;
// select clock divider- SPPR = 0, SPR = 0 (2)
SPI0_BR = SPI_BR_SPPR(0) | SPI_BR_SPR(3);
// turn on spi
SPI0_C1 |= SPI_C1_SPE_MASK;
// do some setup on the oled display
// wait a ms after 3.3v comes up on reset
delay_ms(10);
// reset low for 10ms
CLR_RST(); // low
delay_ms(10);
SET_RST(); // now high
// give it a few ms after reset goes high
delay_ms(5);
// now initialize display controller
// Init sequence for 128x64 OLED module
ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE
ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
ssd1306_command(0x80); // the suggested ratio 0x80
ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8
ssd1306_command(0x3F);
ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3
ssd1306_command(0x0); // no offset
ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D
ssd1306_command(0x14); // internall VCC
ssd1306_command(SSD1306_MEMORYMODE); // 0x20
ssd1306_command(0x00); // 0x0 act like ks0108
ssd1306_command(SSD1306_SEGREMAP /*| 0x1*/);
ssd1306_command(SSD1306_COMSCANINC);
ssd1306_command(SSD1306_SETCOMPINS); // 0xDA
ssd1306_command(0x12);
ssd1306_command(SSD1306_SETCONTRAST); // 0x81
ssd1306_command(0xCF); // internal VCC
ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9
ssd1306_command(0xF1); // internal VCC
ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB
ssd1306_command(0x40);
ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4
ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6
ssd1306_command(SSD1306_DISPLAYON);//--turn on oled panel
// set display to noahs face
ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0
ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0
ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
for(i=0; i<SSD1306_SIZEOF_SCREENBUF; i++){
ssd1306_data(noahs_face[i]);
}
}