ST7565R.c

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#if defined(GLCD_CONTROLLER_ST7565R)

#include "../glcd.h"

void glcd_command(uint8_t c)
{
        GLCD_A0_LOW();
        glcd_spi_write(c);      
}

void glcd_data(uint8_t c)
{
        GLCD_A0_HIGH();
        glcd_spi_write(c);      
}

void glcd_set_contrast(uint8_t val) {
        asm("break");
}

void glcd_power_down(void)
{
        asm("break");
}

void glcd_power_up(void)
{
        asm("break");
}

void glcd_set_y_address(uint8_t y)
{
        glcd_command(ST7565R_PAGE_ADDRESS_SET | (0b00001111 & y));      
}

void glcd_set_x_address(uint8_t x)
{
        glcd_set_column_upper(x);
        glcd_set_column_lower(x);       
}

void glcd_all_on(void)
{
        glcd_command(ST7565R_DISPLAY_ALL_ON);
}

void glcd_normal(void)
{
        glcd_command(ST7565R_DISPLAY_NORMAL);
}

void glcd_set_column_upper(uint8_t addr)
{
        glcd_command(ST7565R_COLUMN_ADDRESS_SET_UPPER | (addr >> 4));
}

void glcd_set_column_lower(uint8_t addr)
{
        glcd_command(ST7565R_COLUMN_ADDRESS_SET_LOWER | (0x0f & addr));
}

void glcd_set_start_line(uint8_t addr)
{
        glcd_command( ST7565R_SET_START_LINE | (0b00111111 & addr));
}

void glcd_clear_now(void)
{
        uint8_t page;
        for (page = 0; page < GLCD_NUMBER_OF_BANKS; page++) {
                glcd_set_y_address(page);
                glcd_set_x_address(0);
                uint8_t col;
                for (col = 0; col < GLCD_NUMBER_OF_COLS; col++) {
                        glcd_data(0);
                }                       
        }
}

void glcd_pattern(void)
{
        uint8_t page;
        for (page = 0; page < GLCD_NUMBER_OF_BANKS; page++) {
                glcd_set_y_address(page);
                glcd_set_x_address(0);
                uint8_t col;
                for (col = 0; col < GLCD_NUMBER_OF_COLS; col++) {
                        glcd_data( (col / 8 + 2) % 2 == 1 ? 0xff : 0x00 );
                }                       
        }
}

void glcd_write()
{

        uint8_t bank;

        for (bank = 0; bank < GLCD_NUMBER_OF_BANKS; bank++) {
                /* Each bank is a single row 8 bits tall */
                uint8_t column;         
                
                if (glcd_bbox_selected->y_min >= (bank+1)*8) {
                        continue; /* Skip the entire bank */
                }
                
                if (glcd_bbox_selected->y_max < bank*8) {
                        break;    /* No more banks need updating */
                }
                
                glcd_set_y_address(bank);
                glcd_set_x_address(glcd_bbox_selected->x_min);

                for (column = glcd_bbox_selected->x_min; column <= glcd_bbox_selected->x_max; column++)
                {
                        glcd_data( glcd_buffer_selected[GLCD_NUMBER_OF_COLS * bank + column] );
                }
        }

        glcd_reset_bbox();

}

#endif