其实，显示字符串例程都有，我只不过多看了一下这个屏的函数。
其中定义了如下函数：
uint32_t ili93xx_init(struct ili93xx_opt_t *p_opt);
void ili93xx_display_on(void);
void ili93xx_display_off(void);
void ili93xx_set_foreground_color(ili93xx_color_t ul_color);
void ili93xx_fill(ili93xx_color_t ul_color);
void ili93xx_set_window(uint32_t ul_x, uint32_t ul_y,
uint32_t ul_width, uint32_t ul_height);
void ili93xx_set_cursor_position(uint16_t us_x, uint16_t us_y);
void ili93xx_scroll(int32_t ul_lines);
void ili93xx_enable_scroll(void);
void ili93xx_disable_scroll(void);
void ili93xx_set_display_direction(enum ili93xx_display_direction e_dd,
enum ili93xx_shift_direction e_shd,
enum ili93xx_scan_direction e_scd);
uint32_t ili93xx_draw_pixel(uint32_t ul_x, uint32_t ul_y);
ili93xx_color_t ili93xx_get_pixel(uint32_t ul_x, uint32_t ul_y);
void ili93xx_draw_line(uint32_t ul_x1, uint32_t ul_y1,
uint32_t ul_x2, uint32_t ul_y2);
void ili93xx_draw_rectangle(uint32_t ul_x1, uint32_t ul_y1,
uint32_t ul_x2, uint32_t ul_y2);
void ili93xx_draw_filled_rectangle(uint32_t ul_x1, uint32_t ul_y1,
uint32_t ul_x2, uint32_t ul_y2);
uint32_t ili93xx_draw_circle(uint32_t ul_x, uint32_t ul_y, uint32_t ul_r);
uint32_t ili93xx_draw_filled_circle(uint32_t ul_x, uint32_t ul_y,
uint32_t ul_r);
void ili93xx_draw_string(uint32_t ul_x, uint32_t ul_y, const uint8_t *p_str);
void ili93xx_draw_pixmap(uint32_t ul_x, uint32_t ul_y, uint32_t ul_width,
uint32_t ul_height, const ili93xx_color_t *p_ul_pixmap);
void ili93xx_set_top_left_limit(ili93xx_coord_t x, ili93xx_coord_t y);
void ili93xx_set_bottom_right_limit(ili93xx_coord_t x, ili93xx_coord_t y);
void ili93xx_set_limits(ili93xx_coord_t start_x, ili93xx_coord_t start_y,
ili93xx_coord_t end_x, ili93xx_coord_t end_y);
ili93xx_color_t ili93xx_read_gram(void);
void ili93xx_write_gram(ili93xx_color_t color);
void ili93xx_copy_pixels_to_screen(const ili93xx_color_t *pixels,
uint32_t count);
void ili93xx_copy_raw_pixel_24bits_to_screen(const uint8_t *raw_pixels,
uint32_t count);
void ili93xx_duplicate_pixel(const ili93xx_color_t color, uint32_t count);
void ili93xx_copy_pixels_from_screen(ili93xx_color_t *pixels, uint32_t count);
uint8_t ili93xx_device_type(void);
void ili93xx_vscroll_area_define(uint16_t us_tfa, uint16_t us_vsa,
uint16_t us_bfa);
uint8_t ili93xx_device_type_identify(void);
我试了下画图填充的画圆函数。需要注意的是每次画圆，都要选确定一下前台的着色:
以下是程序：
#include "asf.h"
#include "stdio_serial.h"
#include "conf_board.h"
#include "conf_clock.h"
#include "smc.h"
#include "ili93xx.h"
/** Chip select number to be set */
#define ILI93XX_LCD_CS 1
struct ili93xx_opt_t g_ili93xx_display_opt;
/**
* Configure UART console.
*/
static void configure_console(void)
{
const usart_serial_options_t uart_serial_options = {
.baudrate = CONF_UART_BAUDRATE,
.paritytype = CONF_UART_PARITY
};
/** Configure console UART. */
sysclk_enable_peripheral_clock(CONSOLE_UART_ID);
stdio_serial_init(CONF_UART, &uart_serial_options);
}
/**
* \brief Application entry point for smc_lcd example.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
sysclk_init();
board_init();
/** Initialize debug console */
configure_console();
/** Enable peripheral clock */
pmc_enable_periph_clk(ID_SMC);
/** Configure SMC interface for Lcd */
smc_set_setup_timing(SMC, ILI93XX_LCD_CS, SMC_SETUP_NWE_SETUP(2)
| SMC_SETUP_NCS_WR_SETUP(2)
| SMC_SETUP_NRD_SETUP(2)
| SMC_SETUP_NCS_RD_SETUP(2));
smc_set_pulse_timing(SMC, ILI93XX_LCD_CS, SMC_PULSE_NWE_PULSE(4)
| SMC_PULSE_NCS_WR_PULSE(4)
| SMC_PULSE_NRD_PULSE(10)
| SMC_PULSE_NCS_RD_PULSE(10));
smc_set_cycle_timing(SMC, ILI93XX_LCD_CS, SMC_CYCLE_NWE_CYCLE(10)
| SMC_CYCLE_NRD_CYCLE(22));
#if ((!defined(SAM4S)) && (!defined(SAM4E)))
smc_set_mode(SMC, ILI93XX_LCD_CS, SMC_MODE_READ_MODE
| SMC_MODE_WRITE_MODE
| SMC_MODE_DBW_8_BIT);
#else
smc_set_mode(SMC, ILI93XX_LCD_CS, SMC_MODE_READ_MODE
| SMC_MODE_WRITE_MODE);
#endif
/** Initialize display parameter */
g_ili93xx_display_opt.ul_width = ILI93XX_LCD_WIDTH;
g_ili93xx_display_opt.ul_height = ILI93XX_LCD_HEIGHT;
g_ili93xx_display_opt.foreground_color = COLOR_BLACK;
g_ili93xx_display_opt.background_color = COLOR_WHITE;
/** Switch off backlight */
aat31xx_disable_backlight();
/** Initialize LCD */
ili93xx_init(&g_ili93xx_display_opt);
/** Set backlight level */
aat31xx_set_backlight(AAT31XX_AVG_BACKLIGHT_LEVEL);
ili93xx_set_foreground_color(COLOR_DARKBLUE);
ili93xx_draw_filled_rectangle(0, 0, ILI93XX_LCD_WIDTH,
ILI93XX_LCD_HEIGHT);
/** Turn on LCD */
ili93xx_display_on();
ili93xx_set_cursor_position(0, 0);
/** Draw text, image and basic shapes on the LCD */
ili93xx_set_foreground_color(COLOR_WHITE);
ili93xx_draw_string(10, 20, (uint8_t *)"ili93xx_lcd example");
ili93xx_draw_string(10, 40, (uint8_t *)"This's 21ic's Atmel");
ili93xx_set_foreground_color(COLOR_RED);
ili93xx_draw_filled_circle(60, 160, 40);
ili93xx_set_foreground_color(COLOR_GREEN);
ili93xx_draw_filled_circle(120, 160, 40);
ili93xx_set_foreground_color(COLOR_BLUE);
ili93xx_draw_filled_circle(180, 160, 40);
//ili93xx_set_foreground_color(COLOR_VIOLET);
//ili93xx_draw_line(0, 0, 240, 320);
while (1) {
}
}
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