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T190: add brightness control on user button push

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KonradIT
2024-12-06 00:56:09 +01:00
parent 03e6738269
commit d99e593569
1 changed files with 26 additions and 0 deletions
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26
tft_src/main.cpp
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@@ -44,6 +44,12 @@ std::vector<Entry> fpvArray = {{"FPV-ELRS", 160, 350, 100, ST7789_BLUE},
#define st7789_LED_K_Pin 17
#define st7789_VTFT_CTRL_Pin 7
#define st7789_brightness_channel 0 // PWM channel (0-15)
#define st7789_brightness_freq 5000 // PWM frequency in Hz
#define st7789_brightness_resolution 8 // 8-bit resolution (0-255)
int current_brightness = 255;
// lcd object pointer, it's a 240x135 lcd display, Adafruit dependcy
static HT_ST7789 *st7789 = NULL;
static SPIClass *gspi_lcd = NULL;
@@ -236,6 +242,18 @@ void drawText(uint16_t x, uint16_t y, String text, uint16_t color = ST7789_WHITE
st7789->print(text.c_str());
}
// Set SPI brightness using st7789_LED_K_Pin pin.
void setBrightness()
{
current_brightness -= 50;
if (current_brightness < 50)
{
current_brightness = 255;
}
ledcWrite(st7789_brightness_channel, current_brightness);
}
#define battery_w 13
#define battery_h 13
#define BATTERY_PIN 7
@@ -590,6 +608,7 @@ void loop()
if (button_pressed_counter > 18)
{
drawText(320 - 5, 5, "*", ST7789_WHITE);
setBrightness();
}
}
}
@@ -740,6 +759,13 @@ void setup()
pinMode(st7789_LED_K_Pin, OUTPUT);
digitalWrite(st7789_LED_K_Pin, HIGH);
// set brightness:
ledcSetup(st7789_brightness_channel, st7789_brightness_freq,
st7789_brightness_resolution);
ledcAttachPin(st7789_LED_K_Pin, st7789_brightness_channel);
ledcWrite(st7789_brightness_channel, current_brightness);
// pinMode(5, OUTPUT);
// digitalWrite(5, HIGH);