apa102: cleanups (#22826)
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2 changed files with 46 additions and 51 deletions
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@ -55,55 +55,25 @@
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uint8_t apa102_led_brightness = APA102_DEFAULT_BRIGHTNESS;
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void static apa102_start_frame(void);
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void static apa102_end_frame(uint16_t num_leds);
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void static apa102_send_frame(uint8_t red, uint8_t green, uint8_t blue, uint8_t brightness);
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void static apa102_send_byte(uint8_t byte);
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void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds) {
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rgb_led_t *end = start_led + num_leds;
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apa102_start_frame();
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for (rgb_led_t *led = start_led; led < end; led++) {
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apa102_send_frame(led->r, led->g, led->b, apa102_led_brightness);
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}
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apa102_end_frame(num_leds);
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static void apa102_send_byte(uint8_t byte) {
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APA102_SEND_BIT(byte, 7);
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APA102_SEND_BIT(byte, 6);
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APA102_SEND_BIT(byte, 5);
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APA102_SEND_BIT(byte, 4);
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APA102_SEND_BIT(byte, 3);
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APA102_SEND_BIT(byte, 2);
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APA102_SEND_BIT(byte, 1);
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APA102_SEND_BIT(byte, 0);
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}
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void static apa102_init(void) {
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setPinOutput(APA102_DI_PIN);
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setPinOutput(APA102_CI_PIN);
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writePinLow(APA102_DI_PIN);
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writePinLow(APA102_CI_PIN);
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}
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void apa102_set_brightness(uint8_t brightness) {
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if (brightness > APA102_MAX_BRIGHTNESS) {
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apa102_led_brightness = APA102_MAX_BRIGHTNESS;
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} else if (brightness < 0) {
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apa102_led_brightness = 0;
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} else {
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apa102_led_brightness = brightness;
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}
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}
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void static apa102_send_frame(uint8_t red, uint8_t green, uint8_t blue, uint8_t brightness) {
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apa102_send_byte(0b11100000 | brightness);
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apa102_send_byte(blue);
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apa102_send_byte(green);
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apa102_send_byte(red);
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}
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void static apa102_start_frame(void) {
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static void apa102_start_frame(void) {
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apa102_init();
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for (uint16_t i = 0; i < 4; i++) {
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apa102_send_byte(0);
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}
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}
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void static apa102_end_frame(uint16_t num_leds) {
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static void apa102_end_frame(uint16_t num_leds) {
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// This function has been taken from: https://github.com/pololu/apa102-arduino/blob/master/APA102.h
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// and adapted. The code is MIT licensed. I think thats compatible?
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//
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@ -136,13 +106,37 @@ void static apa102_end_frame(uint16_t num_leds) {
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apa102_init();
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}
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void static apa102_send_byte(uint8_t byte) {
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APA102_SEND_BIT(byte, 7);
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APA102_SEND_BIT(byte, 6);
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APA102_SEND_BIT(byte, 5);
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APA102_SEND_BIT(byte, 4);
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APA102_SEND_BIT(byte, 3);
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APA102_SEND_BIT(byte, 2);
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APA102_SEND_BIT(byte, 1);
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APA102_SEND_BIT(byte, 0);
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static void apa102_send_frame(uint8_t red, uint8_t green, uint8_t blue, uint8_t brightness) {
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apa102_send_byte(0b11100000 | brightness);
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apa102_send_byte(blue);
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apa102_send_byte(green);
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apa102_send_byte(red);
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}
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void apa102_init(void) {
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setPinOutput(APA102_DI_PIN);
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setPinOutput(APA102_CI_PIN);
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writePinLow(APA102_DI_PIN);
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writePinLow(APA102_CI_PIN);
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}
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void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds) {
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rgb_led_t *end = start_led + num_leds;
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apa102_start_frame();
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for (rgb_led_t *led = start_led; led < end; led++) {
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apa102_send_frame(led->r, led->g, led->b, apa102_led_brightness);
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}
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apa102_end_frame(num_leds);
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}
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void apa102_set_brightness(uint8_t brightness) {
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if (brightness > APA102_MAX_BRIGHTNESS) {
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apa102_led_brightness = APA102_MAX_BRIGHTNESS;
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} else if (brightness < 0) {
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apa102_led_brightness = 0;
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} else {
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apa102_led_brightness = brightness;
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}
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}
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@ -31,7 +31,7 @@
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#define APA102_MAX_BRIGHTNESS 31
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extern uint8_t apa102_led_brightness;
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void apa102_init(void);
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/* User Interface
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*
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@ -44,4 +44,5 @@ extern uint8_t apa102_led_brightness;
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* - Send out the LED data
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*/
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void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds);
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void apa102_set_brightness(uint8_t brightness);
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