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#include "sharpmem.h"
void SHARPMEM_TOGGLEVCOM(SharpMemDisplay_t *display) {
display->_sharpmem_vcom = display->_sharpmem_vcom ? 0x00 : SHARPMEM_BIT_VCOM;
}
void SHARPMEM_draw_pixel(SharpMemDisplay_t *display, uint16_t x, uint16_t y, bool white) {
if ((x < 0) || (x >= display->width) || (y < 0) || (y >= display->height))
return;
if (black) {
display->buffer[(y * WIDTH + x) / 8] |= (0x1 << (x & 7)); //potentially expensive when run many times, use lookup from adafruit lib
} else {
display->buffer[(y * WIDTH + x) / 8] &= ~(0x1 << (x & 7));
}
}
void SHARPMEM_draw_line(SharpMemDisplay_t *display, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, bool white, uint8_t thickness) {
}
void SHARPMEM_draw_circle(SharpMemDisplay_t *display, uint16_t x, uint16_t y, uint8_t r, bool filled) {
}
void SHARPMEM_draw_rect(SharpMemDisplay_t *display, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, bool filled) {
}
uint8_t SHARPMEM_get_pixel(SharpMemDisplay_t *display, uint16_t x, uint16_t y) {
}
void SHARPMEM_clear_display(SharpMemDisplay_t *display) {
memset(display->_buffer, 0xff, (display->width * display->height) / 8);
// Send the clear screen command rather than doing a HW refresh (quicker)
uint8_t clear_data[2] = {(uint8_t)(display->_sharpmem_vcom | SHARPMEM_BIT_CLEAR),
0x00};
HAL_GPIO_WritePin(display->cs_pin_bank, display->cs_pin, GPIO_PIN_SET);
HAL_SPI_Transmit(&display->spidev, clear_data, 2);
HAL_GPIO_WritePin(display->cs_pin_bank, display->cs_pin, GPIO_PIN_RESET);
SHARPMEM_TOGGLEVCOM(display);
}
void SHARPMEM_refresh_display(SharpMemDisplay_t *display) {
uint16_t i, currentline;
spidev->beginTransaction();
// Send the write command
HAL_GPIO_WritePin(display->cs_pin_bank, display->cs_pin, GPIO_PIN_SET);
HAL_SPI_Transmit(&display->spidev, (_sharpmem_vcom | SHARPMEM_BIT_WRITECMD), 1);
SHARPMEM_TOGGLEVCOM(display);;
uint8_t bytes_per_line = display->width / 8;
uint16_t totalbytes = (display->width * display->height) / 8;
for (i = 0; i < totalbytes; i += bytes_per_line) {
uint8_t line[bytes_per_line + 2];
// Send address byte
currentline = ((i + 1) / (WIDTH / 8)) + 1;
line[0] = currentline;
// copy over this line
memcpy(line + 1, display->_buffer + i, bytes_per_line);
// Send end of line
line[bytes_per_line + 1] = 0x00;
// send it!
HAL_SPI_Transmit(&display->spidev, line, bytes_per_line + 2);
}
// Send another trailing 8 bits for the last line
HAL_SPI_Transmit(&display->spidev, (0x00), 1);
HAL_GPIO_WritePin(display->cs_pin_bank, display->cs_pin, GPIO_PIN_RESET);
}
void SHARPMEM_clear_display_buffer(SharpMemDisplay_t *display) {
}
uint8_t *SHARPMEM_get_buffer(SharpMemDisplay_t *display) {
}
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