Hello
I am using sdk17 and st7735 drivers in GFX example.
Later, I will add several UI to the display, but now I am simply outputting sensor values.
Below is the code that simply updates the sensor value. However, whenever text is updated, 'screen_clear()" blinks throughout the screen and makes it look bad.
When updating text on a screen, what method should I use to update text parts naturally? Is this method in sdk?
//st7735
// Some ready-made 16-bit ('565') color settings:
#define GRAY 0xC618
#define RED 0xF800
#define BLUE 0x001F
#define BLACK 0x0000
#define WHITE 0xFFFF
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define ORANGE 0xFC00
//static const char * test_text = "nRF52 family"; //test
extern const nrf_gfx_font_desc_t orkney_8ptFontInfo; //font
extern const nrf_lcd_t nrf_lcd_st7735;
static const nrf_gfx_font_desc_t * p_font = &orkney_8ptFontInfo;
static const nrf_lcd_t * p_lcd = &nrf_lcd_st7735;
static void gfx_initialization(void)
{
APP_ERROR_CHECK(nrf_gfx_init(p_lcd));
}
char display_sensor[20];
static void display_sensor_print(void)
{
sprintf(display_sensor, "%d", new_adc_value);
nrf_gfx_point_t text_start = NRF_GFX_POINT(50,70); //position
APP_ERROR_CHECK(nrf_gfx_print(p_lcd, &text_start, 0, display_sensor, p_font, true)); //instance, position, color, string, pont, wrap
}
static void screen_clear(void)
{
nrf_gfx_screen_fill(p_lcd, WHITE);
}
int main(void)
{
bool erase_bonds;
uint32_t err_code;
// Initialize.
uart_init();
log_init();
timers_init();
power_management_init();
ble_stack_init();
gap_params_init();
gatt_init();
services_init();
advertising_init();
conn_params_init();
// Start execution.
printf("\r\nUART started.\r\n");
NRF_LOG_INFO("Debug logging for UART over RTT started.");
advertising_start();
//saadc
saadc_all_init();
//st7735
gfx_initialization();
screen_clear();
//test
//char app_test[100];
//int test_value = 5;
// Enter main loop.
for (;;)
{
idle_state_handle();
if(new_adc_value > 0)
{
//display
screen_clear(); //clear display
display_sensor_print();
new_adc_value = 0;
}
}
}
Thank you.
