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simplify: always use the TCC to drive the LEDs

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This commit is contained in:
Joey Castillo 2021-08-31 19:38:06 -04:00
parent b22915431b
commit 637964ae4b
2 changed files with 37 additions and 53 deletions
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46
watch-library/watch/watch_led.c
View File

@ -22,26 +22,24 @@
* SOFTWARE.
*/
void watch_enable_led(bool pwm) {
if (pwm) {
void watch_enable_leds() {
if (!hri_tcc_get_CTRLA_reg(TCC0, TCC_CTRLA_ENABLE)) {
_watch_enable_tcc();
}
} else {
watch_enable_digital_output(RED);
watch_enable_digital_output(GREEN);
watch_set_led_off();
}
}
void watch_disable_led(bool pwm) {
if (pwm) {
void watch_disable_leds() {
_watch_disable_tcc();
} else {
watch_disable_digital_output(RED);
watch_disable_digital_output(GREEN);
}
}
void watch_enable_led(bool unused) {
(void)unused;
watch_enable_leds();
}
void watch_disable_led(bool unused) {
(void)unused;
watch_disable_leds();
}
void watch_set_led_color(uint8_t red, uint8_t green) {
@ -53,37 +51,17 @@ void watch_set_led_color(uint8_t red, uint8_t green) {
}
void watch_set_led_red() {
if (hri_tcc_get_CTRLA_reg(TCC0, TCC_CTRLA_ENABLE)) {
watch_set_led_color(255, 0);
} else {
watch_set_pin_level(RED, true);
watch_set_pin_level(GREEN, false);
}
}
void watch_set_led_green() {
if (hri_tcc_get_CTRLA_reg(TCC0, TCC_CTRLA_ENABLE)) {
watch_set_led_color(0, 255);
} else {
watch_set_pin_level(RED, false);
watch_set_pin_level(GREEN, true);
}
}
void watch_set_led_yellow() {
if (hri_tcc_get_CTRLA_reg(TCC0, TCC_CTRLA_ENABLE)) {
watch_set_led_color(255, 255);
} else {
watch_set_pin_level(RED, true);
watch_set_pin_level(GREEN, true);
}
}
void watch_set_led_off() {
if (hri_tcc_get_CTRLA_reg(TCC0, TCC_CTRLA_ENABLE)) {
watch_set_led_color(0, 0);
} else {
watch_set_pin_level(RED, false);
watch_set_pin_level(GREEN, false);
}
}

30
watch-library/watch/watch_led.h
View File

@ -29,28 +29,28 @@
* hungry. The green LED, at full power, consumes more power than the whole chip in active mode,
* and the red LED consumes about twelve times as much power! The LED's should thus be used only
* sparingly in order to preserve battery life.
* @todo Explore running the TC3 PWM driver in standby mode; this would require that the user disable it
* in app_prepare_for_sleep, but could allow for low power, low duty indicator LED usage.
*/
/// @{
/** @brief Enables the LED.
* @param pwm if true, enables PWM output for brightness control (required to use @ref watch_set_led_color).
If false, configures the LED pins as digital outputs.
* @note The TC driver required for PWM mode does not run in STANDBY mode. You should keep your app awake
while PWM'ing the LED's, and disable them before going to sleep.
/** @brief Enables the bi-color LED.
* @note The TCC peripheral that drives the LEDs does not run in STANDBY mode — but the outputs do! This
* means that if you set either red, green or both LEDs to full power, they will shine even when
* your app is asleep. If, however, you set a custom color using watch_set_led_color, the color will
* not display correctly in STANDBY mode. You will need to keep your app running while the LED is on.
*/
void watch_enable_led(bool pwm);
void watch_enable_leds();
/** @brief Disables the LEDs.
* @param pwm if true, disables the PWM output. If false, disables the digital outputs.
* @note If pwm is true, this method will also disable the buzzer, since the buzzer and LED both make use of
* the same peripheral to drive their PWM behavior.
* @note This method will also disable the buzzer, since the buzzer and LED both make use of the same
* peripheral to drive their PWM behavior.
*/
void watch_disable_led(bool pwm);
void watch_disable_leds();
/** @brief Sets the LED to a custom color by modulating each output's duty cycle.
* @param red The red value from 0-255.
* @param green The green value from 0-255.
* @note If you are displaying a custom color, you will need to prevent your app from going to sleep
* while the LED is on; otherwise, the color will not display correctly. You can do this by
* returning false in your app_loop method.
*/
void watch_set_led_color(uint8_t red, uint8_t green);
@ -72,4 +72,10 @@ void watch_set_led_yellow();
/** @brief Turns both the red and the green LEDs off. */
void watch_set_led_off();
__attribute__((deprecated("Use watch_enable_leds instead")))
void watch_enable_led(bool unused);
__attribute__((deprecated("Use watch_disable_leds instead")))
void watch_disable_led(bool unused);
/// @}