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ARM - Refactor SLEEP_LED to support more platforms (#8403)

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* Initial refactor of ARM SLEEP_LED to enable more platforms

* fix build issues

* Disable SLEEP_LED for boards with no caps lock code

* Enable GPT14 for boards with caps lock code and SLEEP_LED enabled

* Enable GPT for boards with caps lock code and SLEEP_LED enabled
This commit is contained in:
Joel Challis 2021-02-28 15:52:43 +00:00 • committed by GitHub
parent a3cbc8a004
commit 415a8bc249
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GPG key ID: 4AEE18F83AFDEB23
25 changed files with 97 additions and 72 deletions
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90
tmk_core/common/chibios/sleep_led.c
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@ -9,21 +9,13 @@
* Use LP timer on Kinetises, TIM14 on STM32F0.
*/
#if defined(KL2x) || defined(K20x)
/* Use Low Power Timer (LPTMR) */
# define TIMER_INTERRUPT_VECTOR KINETIS_LPTMR0_IRQ_VECTOR
# define RESET_COUNTER LPTMR0->CSR |= LPTMRx_CSR_TCF
#elif defined(STM32F0XX)
/* Use TIM14 manually */
# define TIMER_INTERRUPT_VECTOR STM32_TIM14_HANDLER
# define RESET_COUNTER STM32_TIM14->SR &= ~STM32_TIM_SR_UIF
#ifndef SLEEP_LED_GPT_DRIVER
# if defined(STM32F0XX)
# define SLEEP_LED_GPT_DRIVER GPTD14
# endif
#endif
#if defined(KL2x) || defined(K20x) || defined(STM32F0XX) /* common parts for timers/interrupts */
#if defined(KL2x) || defined(K20x) || defined(SLEEP_LED_GPT_DRIVER) /* common parts for timers/interrupts */
/* Breathing Sleep LED brighness(PWM On period) table
* (64[steps] * 4[duration]) / 64[PWM periods/s] = 4 second breath cycle
@ -33,10 +25,7 @@
*/
static const uint8_t breathing_table[64] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 4, 6, 10, 15, 23, 32, 44, 58, 74, 93, 113, 135, 157, 179, 199, 218, 233, 245, 252, 255, 252, 245, 233, 218, 199, 179, 157, 135, 113, 93, 74, 58, 44, 32, 23, 15, 10, 6, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
/* interrupt handler */
OSAL_IRQ_HANDLER(TIMER_INTERRUPT_VECTOR) {
OSAL_IRQ_PROLOGUE();
void sleep_led_timer_callback(void) {
/* Software PWM
* timer:1111 1111 1111 1111
* \_____/\/ \_______/____ count(0-255)
@ -64,17 +53,16 @@ OSAL_IRQ_HANDLER(TIMER_INTERRUPT_VECTOR) {
if (timer.pwm.count == breathing_table[timer.pwm.index]) {
led_set(0);
}
/* Reset the counter */
RESET_COUNTER;
OSAL_IRQ_EPILOGUE();
}
#endif /* common parts for known platforms */
#if defined(KL2x) || defined(K20x) /* platform selection: familiar Kinetis chips */
/* Use Low Power Timer (LPTMR) */
# define TIMER_INTERRUPT_VECTOR KINETIS_LPTMR0_IRQ_VECTOR
# define RESET_COUNTER LPTMR0->CSR |= LPTMRx_CSR_TCF
/* LPTMR clock options */
# define LPTMR_CLOCK_MCGIRCLK 0 /* 4MHz clock */
# define LPTMR_CLOCK_LPO 1 /* 1kHz clock */
@ -86,6 +74,18 @@ OSAL_IRQ_HANDLER(TIMER_INTERRUPT_VECTOR) {
# define SIM_SCGC5_LPTMR SIM_SCGC5_LPTIMER
# endif
/* interrupt handler */
OSAL_IRQ_HANDLER(TIMER_INTERRUPT_VECTOR) {
OSAL_IRQ_PROLOGUE();
sleep_led_timer_callback();
/* Reset the counter */
RESET_COUNTER;
OSAL_IRQ_EPILOGUE();
}
/* Initialise the timer */
void sleep_led_init(void) {
/* Make sure the clock to the LPTMR is enabled */
@ -159,45 +159,23 @@ void sleep_led_toggle(void) {
LPTMR0->CSR ^= LPTMRx_CSR_TEN;
}
#elif defined(STM32F0XX) /* platform selection: STM32F0XX */
#elif defined(SLEEP_LED_GPT_DRIVER)
static void gptTimerCallback(GPTDriver *gptp) {
(void)gptp;
sleep_led_timer_callback();
}
static const GPTConfig gptcfg = {1000000, gptTimerCallback, 0, 0};
/* Initialise the timer */
void sleep_led_init(void) {
/* enable clock */
rccEnableTIM14(FALSE); /* low power enable = FALSE */
rccResetTIM14();
void sleep_led_init(void) { gptStart(&SLEEP_LED_GPT_DRIVER, &gptcfg); }
/* prescale */
/* Assuming 48MHz internal clock */
/* getting cca 65484 irqs/sec */
STM32_TIM14->PSC = 733;
void sleep_led_enable(void) { gptStartContinuous(&SLEEP_LED_GPT_DRIVER, gptcfg.frequency / 0xFFFF); }
/* auto-reload */
/* 0 => interrupt every time */
STM32_TIM14->ARR = 3;
void sleep_led_disable(void) { gptStopTimer(&SLEEP_LED_GPT_DRIVER); }
/* enable counter update event interrupt */
STM32_TIM14->DIER |= STM32_TIM_DIER_UIE;
/* register interrupt vector */
nvicEnableVector(STM32_TIM14_NUMBER, 2); /* vector, priority */
}
void sleep_led_enable(void) {
/* Enable the timer */
STM32_TIM14->CR1 = STM32_TIM_CR1_CEN | STM32_TIM_CR1_URS;
/* URS => update event only on overflow; setting UG bit disabled */
}
void sleep_led_disable(void) {
/* Disable the timer */
STM32_TIM14->CR1 = 0;
}
void sleep_led_toggle(void) {
/* Toggle the timer */
STM32_TIM14->CR1 ^= STM32_TIM_CR1_CEN;
}
void sleep_led_toggle(void) { (SLEEP_LED_GPT_DRIVER.state == GPT_READY) ? sleep_led_enable() : sleep_led_disable(); }
#else /* platform selection: not on familiar chips */