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/**************************************************************************//**
*
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-1-16 Wayne First version
*
******************************************************************************/
#include <rtconfig.h>
#if defined(NU_PKG_USING_ILI9341_EBI)
#include <lcd_ili9341.h>
#include "drv_pdma.h"
#define ILI9341_ADDR_CMD 0x0
#define ILI9341_ADDR_DATA 0x0030000
#define ili9341_reg_write(u32RegAddr) (*((volatile unsigned short *)(g_uint32_ili9341_base+(ILI9341_ADDR_CMD))) = (u32RegAddr))
#define ili9341_read_data() (*((volatile unsigned short *)(g_uint32_ili9341_base+(ILI9341_ADDR_DATA))))
#define ili9341_write_data(u32Data) (*((volatile unsigned short *)(g_uint32_ili9341_base+(ILI9341_ADDR_DATA))) = (u32Data))
static rt_uint32_t g_uint32_ili9341_base = 0;
void ili9341_send_cmd(rt_uint8_t cmd)
{
CLR_RS;
ili9341_reg_write(cmd);
SET_RS;
}
void ili9341_send_cmd_parameter(rt_uint8_t data)
{
ili9341_write_data(data);
}
void ili9341_send_pixel_data(rt_uint16_t color)
{
ili9341_write_data(color);
}
void ili9341_send_pixels(rt_uint16_t *pixels, int len)
{
int count = len / sizeof(rt_uint16_t);
if (count < 1024)
{
// CPU feed
int i = 0;
while (i < count)
{
ili9341_write_data(pixels[i]);
i++;
}
}
else
{
// PDMA-M2M feed
nu_pdma_mempush((void *)(g_uint32_ili9341_base + (ILI9341_ADDR_DATA)), (void *)pixels, 16, count);
}
}
void ili9341_set_column(uint16_t StartCol, uint16_t EndCol)
{
ili9341_send_cmd(0x2A);
ili9341_write_data((StartCol >> 8) & 0xFF);
ili9341_write_data(StartCol & 0xFF);
ili9341_write_data((EndCol >> 8) & 0xFF);
ili9341_write_data(EndCol & 0xFF);
}
void ili9341_set_page(uint16_t StartPage, uint16_t EndPage)
{
ili9341_send_cmd(0x2B);
ili9341_write_data((StartPage >> 8) & 0xFF);
ili9341_write_data(StartPage & 0xFF);
ili9341_write_data((EndPage >> 8) & 0xFF);
ili9341_write_data(EndPage & 0xFF);
}
void ili9341_lcd_get_pixel(char *color, int x, int y)
{
rt_uint16_t red = 0;
rt_uint16_t green = 0;
rt_uint16_t blue = 0;
if (x >= XSIZE_PHYS || y >= YSIZE_PHYS)
{
*(rt_uint16_t *)color = 0;
return;
}
ili9341_set_column(x, x);
ili9341_set_page(y, y);
ili9341_send_cmd(0x2E);
ili9341_read_data(); // Dummy
red = ili9341_read_data(); // Red[4:0]@D15~D11
blue = ili9341_read_data(); // Blue[4:0]@D15~D11
green = ili9341_read_data(); // Green[5:0]@D15~D10
//BGR565: B in High byte, R in low byte
//*(rt_uint16_t *)color = (((blue >> 11) << 11) | ((green >> 10) << 5) | (red >> 11));
//RGB565: R in High byte, B in low byte
*(rt_uint16_t *)color = (((red >> 11) << 11) | ((green >> 10) << 5) | (blue >> 11));
}
rt_err_t rt_hw_lcd_ili9341_ebi_init(rt_uint32_t ili9341_base)
{
g_uint32_ili9341_base = ili9341_base;
return RT_EOK;
}
#endif /* if defined(NU_PKG_USING_ILI9341_EBI) */
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