summaryrefslogtreecommitdiff
path: root/tmk_core/common/chibios
diff options
context:
space:
mode:
Diffstat (limited to 'tmk_core/common/chibios')
-rw-r--r--tmk_core/common/chibios/_wait.h55
-rw-r--r--tmk_core/common/chibios/bootloader.c20
-rw-r--r--tmk_core/common/chibios/chibios_config.h7
-rw-r--r--tmk_core/common/chibios/pin_defs.h81
-rw-r--r--tmk_core/common/chibios/sleep_led.c92
-rw-r--r--tmk_core/common/chibios/suspend.c28
-rw-r--r--tmk_core/common/chibios/wait.c89
7 files changed, 313 insertions, 59 deletions
diff --git a/tmk_core/common/chibios/_wait.h b/tmk_core/common/chibios/_wait.h
new file mode 100644
index 0000000000..5bface53e1
--- /dev/null
+++ b/tmk_core/common/chibios/_wait.h
@@ -0,0 +1,55 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <ch.h>
+
+/* chThdSleepX of zero maps to infinite - so we map to a tiny delay to still yield */
+#define wait_ms(ms) \
+ do { \
+ if (ms != 0) { \
+ chThdSleepMilliseconds(ms); \
+ } else { \
+ chThdSleepMicroseconds(1); \
+ } \
+ } while (0)
+#define wait_us(us) \
+ do { \
+ if (us != 0) { \
+ chThdSleepMicroseconds(us); \
+ } else { \
+ chThdSleepMicroseconds(1); \
+ } \
+ } while (0)
+
+/* For GPIOs on ARM-based MCUs, the input pins are sampled by the clock of the bus
+ * to which the GPIO is connected.
+ * The connected buses differ depending on the various series of MCUs.
+ * And since the instruction execution clock of the CPU and the bus clock of GPIO are different,
+ * there is a delay of several clocks to read the change of the input signal.
+ *
+ * Define this delay with the GPIO_INPUT_PIN_DELAY macro.
+ * If the GPIO_INPUT_PIN_DELAY macro is not defined, the following default values will be used.
+ * (A fairly large value of 0.25 microseconds is set.)
+ */
+
+#include "wait.c"
+
+#ifndef GPIO_INPUT_PIN_DELAY
+# define GPIO_INPUT_PIN_DELAY (STM32_SYSCLK / 1000000L / 4)
+#endif
+
+#define waitInputPinDelay() wait_cpuclock(GPIO_INPUT_PIN_DELAY)
diff --git a/tmk_core/common/chibios/bootloader.c b/tmk_core/common/chibios/bootloader.c
index 6cabcc4b81..11f7abf432 100644
--- a/tmk_core/common/chibios/bootloader.c
+++ b/tmk_core/common/chibios/bootloader.c
@@ -13,7 +13,23 @@
# define STM32_BOOTLOADER_DUAL_BANK FALSE
#endif
-#if STM32_BOOTLOADER_DUAL_BANK
+#ifdef BOOTLOADER_TINYUF2
+
+# define DBL_TAP_MAGIC 0xf01669ef // From tinyuf2's board_api.h
+
+// defined by linker script
+extern uint32_t _board_dfu_dbl_tap[];
+# define DBL_TAP_REG _board_dfu_dbl_tap[0]
+
+void bootloader_jump(void) {
+ DBL_TAP_REG = DBL_TAP_MAGIC;
+ NVIC_SystemReset();
+}
+
+void enter_bootloader_mode_if_requested(void) { /* not needed, no two-stage reset */
+}
+
+#elif STM32_BOOTLOADER_DUAL_BANK
// Need pin definitions
# include "config_common.h"
@@ -79,7 +95,7 @@ void enter_bootloader_mode_if_requested(void) {
}
}
-#elif defined(KL2x) || defined(K20x) // STM32_BOOTLOADER_DUAL_BANK // STM32_BOOTLOADER_ADDRESS
+#elif defined(KL2x) || defined(K20x) || defined(MK66F18) // STM32_BOOTLOADER_DUAL_BANK // STM32_BOOTLOADER_ADDRESS
/* Kinetis */
# if defined(BOOTLOADER_KIIBOHD)
diff --git a/tmk_core/common/chibios/chibios_config.h b/tmk_core/common/chibios/chibios_config.h
index b4d96465d1..1d8ace4955 100644
--- a/tmk_core/common/chibios/chibios_config.h
+++ b/tmk_core/common/chibios/chibios_config.h
@@ -15,6 +15,8 @@
*/
#pragma once
+#define SPLIT_USB_DETECT // Force this on for now
+
#if defined(STM32F1XX)
# define USE_GPIOV1
#endif
@@ -28,4 +30,9 @@
# define USE_I2CV1
# define USE_I2CV1_CONTRIB // for some reason a bunch of ChibiOS-Contrib boards only have clock_speed
# define USE_GPIOV1
+# define STM32_SYSCLK KINETIS_SYSCLK_FREQUENCY
+#endif
+
+#if defined(MK66F18)
+# define STM32_SYSCLK KINETIS_SYSCLK_FREQUENCY
#endif
diff --git a/tmk_core/common/chibios/pin_defs.h b/tmk_core/common/chibios/pin_defs.h
index 86bc1076e8..c03f8de0c2 100644
--- a/tmk_core/common/chibios/pin_defs.h
+++ b/tmk_core/common/chibios/pin_defs.h
@@ -70,6 +70,23 @@
# define A13 PAL_LINE(GPIOA, 13)
# define A14 PAL_LINE(GPIOA, 14)
# define A15 PAL_LINE(GPIOA, 15)
+# define A16 PAL_LINE(GPIOA, 16)
+# define A17 PAL_LINE(GPIOA, 17)
+# define A18 PAL_LINE(GPIOA, 18)
+# define A19 PAL_LINE(GPIOA, 19)
+# define A20 PAL_LINE(GPIOA, 20)
+# define A21 PAL_LINE(GPIOA, 21)
+# define A22 PAL_LINE(GPIOA, 22)
+# define A23 PAL_LINE(GPIOA, 23)
+# define A24 PAL_LINE(GPIOA, 24)
+# define A25 PAL_LINE(GPIOA, 25)
+# define A26 PAL_LINE(GPIOA, 26)
+# define A27 PAL_LINE(GPIOA, 27)
+# define A28 PAL_LINE(GPIOA, 28)
+# define A29 PAL_LINE(GPIOA, 29)
+# define A30 PAL_LINE(GPIOA, 30)
+# define A31 PAL_LINE(GPIOA, 31)
+# define A32 PAL_LINE(GPIOA, 32)
# define B0 PAL_LINE(GPIOB, 0)
# define B1 PAL_LINE(GPIOB, 1)
# define B2 PAL_LINE(GPIOB, 2)
@@ -90,6 +107,19 @@
# define B17 PAL_LINE(GPIOB, 17)
# define B18 PAL_LINE(GPIOB, 18)
# define B19 PAL_LINE(GPIOB, 19)
+# define B20 PAL_LINE(GPIOB, 20)
+# define B21 PAL_LINE(GPIOB, 21)
+# define B22 PAL_LINE(GPIOB, 22)
+# define B23 PAL_LINE(GPIOB, 23)
+# define B24 PAL_LINE(GPIOB, 24)
+# define B25 PAL_LINE(GPIOB, 25)
+# define B26 PAL_LINE(GPIOB, 26)
+# define B27 PAL_LINE(GPIOB, 27)
+# define B28 PAL_LINE(GPIOB, 28)
+# define B29 PAL_LINE(GPIOB, 29)
+# define B30 PAL_LINE(GPIOB, 30)
+# define B31 PAL_LINE(GPIOB, 31)
+# define B32 PAL_LINE(GPIOB, 32)
# define C0 PAL_LINE(GPIOC, 0)
# define C1 PAL_LINE(GPIOC, 1)
# define C2 PAL_LINE(GPIOC, 2)
@@ -106,6 +136,23 @@
# define C13 PAL_LINE(GPIOC, 13)
# define C14 PAL_LINE(GPIOC, 14)
# define C15 PAL_LINE(GPIOC, 15)
+# define C16 PAL_LINE(GPIOC, 16)
+# define C17 PAL_LINE(GPIOC, 17)
+# define C18 PAL_LINE(GPIOC, 18)
+# define C19 PAL_LINE(GPIOC, 19)
+# define C20 PAL_LINE(GPIOC, 20)
+# define C21 PAL_LINE(GPIOC, 21)
+# define C22 PAL_LINE(GPIOC, 22)
+# define C23 PAL_LINE(GPIOC, 23)
+# define C24 PAL_LINE(GPIOC, 24)
+# define C25 PAL_LINE(GPIOC, 25)
+# define C26 PAL_LINE(GPIOC, 26)
+# define C27 PAL_LINE(GPIOC, 27)
+# define C28 PAL_LINE(GPIOC, 28)
+# define C29 PAL_LINE(GPIOC, 29)
+# define C30 PAL_LINE(GPIOC, 30)
+# define C31 PAL_LINE(GPIOC, 31)
+# define C32 PAL_LINE(GPIOC, 32)
# define D0 PAL_LINE(GPIOD, 0)
# define D1 PAL_LINE(GPIOD, 1)
# define D2 PAL_LINE(GPIOD, 2)
@@ -122,6 +169,23 @@
# define D13 PAL_LINE(GPIOD, 13)
# define D14 PAL_LINE(GPIOD, 14)
# define D15 PAL_LINE(GPIOD, 15)
+# define D16 PAL_LINE(GPIOD, 16)
+# define D17 PAL_LINE(GPIOD, 17)
+# define D18 PAL_LINE(GPIOD, 18)
+# define D19 PAL_LINE(GPIOD, 19)
+# define D20 PAL_LINE(GPIOD, 20)
+# define D21 PAL_LINE(GPIOD, 21)
+# define D22 PAL_LINE(GPIOD, 22)
+# define D23 PAL_LINE(GPIOD, 23)
+# define D24 PAL_LINE(GPIOD, 24)
+# define D25 PAL_LINE(GPIOD, 25)
+# define D26 PAL_LINE(GPIOD, 26)
+# define D27 PAL_LINE(GPIOD, 27)
+# define D28 PAL_LINE(GPIOD, 28)
+# define D29 PAL_LINE(GPIOD, 29)
+# define D30 PAL_LINE(GPIOD, 30)
+# define D31 PAL_LINE(GPIOD, 31)
+# define D32 PAL_LINE(GPIOD, 32)
# define E0 PAL_LINE(GPIOE, 0)
# define E1 PAL_LINE(GPIOE, 1)
# define E2 PAL_LINE(GPIOE, 2)
@@ -138,6 +202,23 @@
# define E13 PAL_LINE(GPIOE, 13)
# define E14 PAL_LINE(GPIOE, 14)
# define E15 PAL_LINE(GPIOE, 15)
+# define E16 PAL_LINE(GPIOE, 16)
+# define E17 PAL_LINE(GPIOE, 17)
+# define E18 PAL_LINE(GPIOE, 18)
+# define E19 PAL_LINE(GPIOE, 19)
+# define E20 PAL_LINE(GPIOE, 20)
+# define E21 PAL_LINE(GPIOE, 21)
+# define E22 PAL_LINE(GPIOE, 22)
+# define E23 PAL_LINE(GPIOE, 23)
+# define E24 PAL_LINE(GPIOE, 24)
+# define E25 PAL_LINE(GPIOE, 25)
+# define E26 PAL_LINE(GPIOE, 26)
+# define E27 PAL_LINE(GPIOE, 27)
+# define E28 PAL_LINE(GPIOE, 28)
+# define E29 PAL_LINE(GPIOE, 29)
+# define E30 PAL_LINE(GPIOE, 30)
+# define E31 PAL_LINE(GPIOE, 31)
+# define E32 PAL_LINE(GPIOE, 32)
# define F0 PAL_LINE(GPIOF, 0)
# define F1 PAL_LINE(GPIOF, 1)
# define F2 PAL_LINE(GPIOF, 2)
diff --git a/tmk_core/common/chibios/sleep_led.c b/tmk_core/common/chibios/sleep_led.c
index 5595eec0e5..1c65016a42 100644
--- a/tmk_core/common/chibios/sleep_led.c
+++ b/tmk_core/common/chibios/sleep_led.c
@@ -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)
@@ -64,20 +53,19 @@ 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 */
+# define LPTMR_CLOCK_LPO 1 /* 1kHz clock */
# define LPTMR_CLOCK_ERCLK32K 2 /* external 32kHz crystal */
# define LPTMR_CLOCK_OSCERCLK 3 /* output from OSC */
@@ -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 */
@@ -121,7 +121,7 @@ void sleep_led_init(void) {
MCG->C2 |= MCG_C2_IRCS; // fast (4MHz) internal ref clock
# if defined(KL27) // divide the 8MHz IRC by 2, to have the same MCGIRCLK speed as others
MCG->MC |= MCG_MC_LIRC_DIV2_DIV2;
-# endif /* KL27 */
+# endif /* KL27 */
MCG->C1 |= MCG_C1_IRCLKEN; // enable internal ref clock
// to work in stop mode, also MCG_C1_IREFSTEN
// Divide 4MHz by 2^N (N=6) => 62500 irqs/sec =>
@@ -159,45 +159,23 @@ void sleep_led_toggle(void) {
LPTMR0->CSR ^= LPTMRx_CSR_TEN;
}
-#elif defined(STM32F0XX) /* platform selection: STM32F0XX */
-
-/* Initialise the timer */
-void sleep_led_init(void) {
- /* enable clock */
- rccEnableTIM14(FALSE); /* low power enable = FALSE */
- rccResetTIM14();
-
- /* prescale */
- /* Assuming 48MHz internal clock */
- /* getting cca 65484 irqs/sec */
- STM32_TIM14->PSC = 733;
+#elif defined(SLEEP_LED_GPT_DRIVER)
- /* auto-reload */
- /* 0 => interrupt every time */
- STM32_TIM14->ARR = 3;
+static void gptTimerCallback(GPTDriver *gptp) {
+ (void)gptp;
+ sleep_led_timer_callback();
+}
- /* enable counter update event interrupt */
- STM32_TIM14->DIER |= STM32_TIM_DIER_UIE;
+static const GPTConfig gptcfg = {1000000, gptTimerCallback, 0, 0};
- /* register interrupt vector */
- nvicEnableVector(STM32_TIM14_NUMBER, 2); /* vector, priority */
-}
+/* Initialise the timer */
+void sleep_led_init(void) { gptStart(&SLEEP_LED_GPT_DRIVER, &gptcfg); }
-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_enable(void) { gptStartContinuous(&SLEEP_LED_GPT_DRIVER, gptcfg.frequency / 0xFFFF); }
-void sleep_led_disable(void) {
- /* Disable the timer */
- STM32_TIM14->CR1 = 0;
-}
+void sleep_led_disable(void) { gptStopTimer(&SLEEP_LED_GPT_DRIVER); }
-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 */
diff --git a/tmk_core/common/chibios/suspend.c b/tmk_core/common/chibios/suspend.c
index 49e20641fb..38517e06f0 100644
--- a/tmk_core/common/chibios/suspend.c
+++ b/tmk_core/common/chibios/suspend.c
@@ -24,6 +24,13 @@
# include "rgblight.h"
#endif
+#ifdef LED_MATRIX_ENABLE
+# include "led_matrix.h"
+#endif
+#ifdef RGB_MATRIX_ENABLE
+# include "rgb_matrix.h"
+#endif
+
/** \brief suspend idle
*
* FIXME: needs doc
@@ -53,6 +60,13 @@ void suspend_power_down(void) {
backlight_set(0);
#endif
+#ifdef LED_MATRIX_ENABLE
+ led_matrix_task();
+#endif
+#ifdef RGB_MATRIX_ENABLE
+ rgb_matrix_task();
+#endif
+
// Turn off LED indicators
uint8_t leds_off = 0;
#if defined(BACKLIGHT_CAPS_LOCK) && defined(BACKLIGHT_ENABLE)
@@ -69,6 +83,13 @@ void suspend_power_down(void) {
#if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
rgblight_suspend();
#endif
+
+#if defined(LED_MATRIX_ENABLE)
+ led_matrix_set_suspend_state(true);
+#endif
+#if defined(RGB_MATRIX_ENABLE)
+ rgb_matrix_set_suspend_state(true);
+#endif
#ifdef AUDIO_ENABLE
stop_all_notes();
#endif /* AUDIO_ENABLE */
@@ -137,5 +158,12 @@ void suspend_wakeup_init(void) {
#if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
rgblight_wakeup();
#endif
+
+#if defined(LED_MATRIX_ENABLE)
+ led_matrix_set_suspend_state(false);
+#endif
+#if defined(RGB_MATRIX_ENABLE)
+ rgb_matrix_set_suspend_state(false);
+#endif
suspend_wakeup_init_kb();
}
diff --git a/tmk_core/common/chibios/wait.c b/tmk_core/common/chibios/wait.c
new file mode 100644
index 0000000000..c6270fd95e
--- /dev/null
+++ b/tmk_core/common/chibios/wait.c
@@ -0,0 +1,89 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __OPTIMIZE__
+# pragma message "Compiler optimizations disabled; wait_cpuclock() won't work as designed"
+#endif
+
+#define CLOCK_DELAY_NOP8 "nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t"
+
+__attribute__((always_inline)) static inline void wait_cpuclock(unsigned int n) { /* n: 1..135 */
+ /* The argument n must be a constant expression.
+ * That way, compiler optimization will remove unnecessary code. */
+ if (n < 1) {
+ return;
+ }
+ if (n > 8) {
+ unsigned int n8 = n / 8;
+ n = n - n8 * 8;
+ switch (n8) {
+ case 16:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 15:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 14:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 13:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 12:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 11:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 10:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 9:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 8:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 7:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 6:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 5:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 4:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 3:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 2:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 1:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 0:
+ break;
+ }
+ }
+ switch (n) {
+ case 8:
+ asm volatile("nop" ::: "memory");
+ case 7:
+ asm volatile("nop" ::: "memory");
+ case 6:
+ asm volatile("nop" ::: "memory");
+ case 5:
+ asm volatile("nop" ::: "memory");
+ case 4:
+ asm volatile("nop" ::: "memory");
+ case 3:
+ asm volatile("nop" ::: "memory");
+ case 2:
+ asm volatile("nop" ::: "memory");
+ case 1:
+ asm volatile("nop" ::: "memory");
+ case 0:
+ break;
+ }
+} \ No newline at end of file