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apa102: cleanups (#22826)

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Ryan 2024-01-07 17:48:14 +11:00 committed by GitHub
parent e5203f86e2
commit b3f55cb5b2
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2 changed files with 46 additions and 51 deletions
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94
drivers/led/apa102.c
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@ -55,55 +55,25 @@
uint8_t apa102_led_brightness = APA102_DEFAULT_BRIGHTNESS; uint8_t apa102_led_brightness = APA102_DEFAULT_BRIGHTNESS;
void static apa102_start_frame(void); static void apa102_send_byte(uint8_t byte) {
void static apa102_end_frame(uint16_t num_leds); APA102_SEND_BIT(byte, 7);
APA102_SEND_BIT(byte, 6);
void static apa102_send_frame(uint8_t red, uint8_t green, uint8_t blue, uint8_t brightness); APA102_SEND_BIT(byte, 5);
void static apa102_send_byte(uint8_t byte); APA102_SEND_BIT(byte, 4);
APA102_SEND_BIT(byte, 3);
void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds) { APA102_SEND_BIT(byte, 2);
rgb_led_t *end = start_led + num_leds; APA102_SEND_BIT(byte, 1);
APA102_SEND_BIT(byte, 0);
apa102_start_frame();
for (rgb_led_t *led = start_led; led < end; led++) {
apa102_send_frame(led->r, led->g, led->b, apa102_led_brightness);
}
apa102_end_frame(num_leds);
} }
void static apa102_init(void) { static void apa102_start_frame(void) {
setPinOutput(APA102_DI_PIN);
setPinOutput(APA102_CI_PIN);
writePinLow(APA102_DI_PIN);
writePinLow(APA102_CI_PIN);
}
void apa102_set_brightness(uint8_t brightness) {
if (brightness > APA102_MAX_BRIGHTNESS) {
apa102_led_brightness = APA102_MAX_BRIGHTNESS;
} else if (brightness < 0) {
apa102_led_brightness = 0;
} else {
apa102_led_brightness = brightness;
}
}
void static apa102_send_frame(uint8_t red, uint8_t green, uint8_t blue, uint8_t brightness) {
apa102_send_byte(0b11100000 | brightness);
apa102_send_byte(blue);
apa102_send_byte(green);
apa102_send_byte(red);
}
void static apa102_start_frame(void) {
apa102_init(); apa102_init();
for (uint16_t i = 0; i < 4; i++) { for (uint16_t i = 0; i < 4; i++) {
apa102_send_byte(0); apa102_send_byte(0);
} }
} }
void static apa102_end_frame(uint16_t num_leds) { static void apa102_end_frame(uint16_t num_leds) {
// This function has been taken from: https://github.com/pololu/apa102-arduino/blob/master/APA102.h // This function has been taken from: https://github.com/pololu/apa102-arduino/blob/master/APA102.h
// and adapted. The code is MIT licensed. I think thats compatible? // and adapted. The code is MIT licensed. I think thats compatible?
// //
@ -136,13 +106,37 @@ void static apa102_end_frame(uint16_t num_leds) {
apa102_init(); apa102_init();
} }
void static apa102_send_byte(uint8_t byte) { static void apa102_send_frame(uint8_t red, uint8_t green, uint8_t blue, uint8_t brightness) {
APA102_SEND_BIT(byte, 7); apa102_send_byte(0b11100000 | brightness);
APA102_SEND_BIT(byte, 6); apa102_send_byte(blue);
APA102_SEND_BIT(byte, 5); apa102_send_byte(green);
APA102_SEND_BIT(byte, 4); apa102_send_byte(red);
APA102_SEND_BIT(byte, 3); }
APA102_SEND_BIT(byte, 2);
APA102_SEND_BIT(byte, 1); void apa102_init(void) {
APA102_SEND_BIT(byte, 0); setPinOutput(APA102_DI_PIN);
setPinOutput(APA102_CI_PIN);
writePinLow(APA102_DI_PIN);
writePinLow(APA102_CI_PIN);
}
void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds) {
rgb_led_t *end = start_led + num_leds;
apa102_start_frame();
for (rgb_led_t *led = start_led; led < end; led++) {
apa102_send_frame(led->r, led->g, led->b, apa102_led_brightness);
}
apa102_end_frame(num_leds);
}
void apa102_set_brightness(uint8_t brightness) {
if (brightness > APA102_MAX_BRIGHTNESS) {
apa102_led_brightness = APA102_MAX_BRIGHTNESS;
} else if (brightness < 0) {
apa102_led_brightness = 0;
} else {
apa102_led_brightness = brightness;
}
} }

3
drivers/led/apa102.h
View file

@ -31,7 +31,7 @@
#define APA102_MAX_BRIGHTNESS 31 #define APA102_MAX_BRIGHTNESS 31
extern uint8_t apa102_led_brightness; void apa102_init(void);
/* User Interface /* User Interface
* *
@ -44,4 +44,5 @@ extern uint8_t apa102_led_brightness;
* - Send out the LED data * - Send out the LED data
*/ */
void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds); void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds);
void apa102_set_brightness(uint8_t brightness); void apa102_set_brightness(uint8_t brightness);