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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
#include <Arduino.h>
#include <SPI.h>
// pin numbers
#define SSD1351_DC 14
#define SSD1351_R 15
#define SSD1351_CS 16
// Predefine the routine with "C" prototypes
extern "C" void ssd1351_init_board(void);
extern "C" void ssd1351_setpin_reset(int state);
extern "C" void ssd1351_acquire_bus(void);
extern "C" void ssd1351_release_bus(void);
extern "C" void ssd1351_write_cmd(unsigned char index);
extern "C" void ssd1351_write_data(unsigned char data);
static SPISettings settings(12000000, MSBFIRST, SPI_MODE0);
void ssd1351_init_board(void) {
pinMode(SSD1351_R, OUTPUT);
pinMode(SSD1351_CS, OUTPUT);
pinMode(SSD1351_DC, OUTPUT);
digitalWriteFast(SSD1351_R, 1);
digitalWriteFast(SSD1351_CS, 1);
digitalWriteFast(SSD1351_DC, 1);
}
void ssd1351_setpin_reset(int state) {
if (state)
digitalWriteFast(SSD1351_R, 0);
else
digitalWriteFast(SSD1351_R, 1);
}
void ssd1351_acquire_bus(void) {
SPI.beginTransaction(settings);
digitalWriteFast(SSD1351_CS, 0);
}
void ssd1351_release_bus(void) {
digitalWriteFast(SSD1351_CS, 1);
SPI.endTransaction();
}
void ssd1351_write_cmd(unsigned char index) {
digitalWriteFast(SSD1351_DC, 0);
SPI.transfer(index);
digitalWriteFast(SSD1351_DC, 1);
}
void ssd1351_write_data(unsigned char data) {
SPI.transfer(data);
}
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