Add lp/us ticker_free() functions stub.

This patch adds only empty stubs of `us_ticker_free()` and `lp_ticker_free()` for all boards where these functions are not implemented.

targets/TARGET_ARM_SSG/TARGET_BEETLE/lp_ticker.c

@@ -152,4 +152,9 @@ void lp_ticker_clear_interrupt(void)
     DualTimer_ClearInterrupt(DUALTIMER0);
 }
 
+void lp_ticker_free(void)
+{
+
+}
+
 #endif

targets/TARGET_ARM_SSG/TARGET_BEETLE/us_ticker.c

@@ -111,3 +111,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     Timer_ClearInterrupt(TIMER0);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/lp_ticker.c

@@ -108,6 +108,11 @@ void lp_ticker_fire_interrupt(void)
     cmsdk_ticker_fire_interrupt(&timer_data);
 }
 
+void lp_ticker_free(void)
+{
+
+}
+
 void TIMER1_IRQHandler(void)
 {
     cmsdk_ticker_irq_handler(&timer_data);

targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/us_ticker.c

@@ -112,6 +112,11 @@ void us_ticker_fire_interrupt(void)
     cmsdk_ticker_fire_interrupt(&timer_data);
 }
 
+void us_ticker_free(void)
+{
+
+}
+
 void TIMER0_IRQHandler(void)
 {
     cmsdk_ticker_irq_handler(&timer_data);

targets/TARGET_ARM_SSG/TARGET_IOTSS/us_ticker.c

@@ -87,3 +87,8 @@ void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER2->TimerIntClr = 0x1;
 
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_ARM_SSG/TARGET_MPS2/us_ticker.c

@@ -81,3 +81,8 @@ void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER2->TimerIntClr = 0x1;
 
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Analog_Devices/TARGET_ADUCM302X/TARGET_ADUCM3029/api/us_ticker.c

@@ -355,6 +355,10 @@ void us_ticker_fire_interrupt(void)
     event_timer();                             // enable the timer and interrupt
 }
 
+void us_ticker_free(void)
+{
+
+}
 
 /*
 ** EOF

targets/TARGET_Analog_Devices/TARGET_ADUCM4X50/TARGET_ADUCM4050/api/us_ticker.c

@@ -353,6 +353,10 @@ void us_ticker_fire_interrupt(void)
     event_timer();                             // enable the timer and interrupt
 }
 
+void us_ticker_free(void)
+{
+
+}
 
 /*
 ** EOF

targets/TARGET_Atmel/TARGET_SAM_CortexM0P/us_ticker.c

@@ -167,3 +167,8 @@ void us_ticker_clear_interrupt(void)
     tc_clear_interrupt(&us_ticker_module, TC_CALLBACK_CC_CHANNEL0);
     NVIC_ClearPendingIRQ(TICKER_COUNTER_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Atmel/TARGET_SAM_CortexM4/lp_ticker.c

@@ -131,3 +131,8 @@ void lp_ticker_clear_interrupt(void)
 {
     NVIC_ClearPendingIRQ(TICKER_COUNTER_IRQn2);
 }
+
+void lp_ticker_free(void)
+{
+
+}

targets/TARGET_Atmel/TARGET_SAM_CortexM4/us_ticker.c

@@ -186,3 +186,8 @@ void us_ticker_clear_interrupt(void)
 {
     NVIC_ClearPendingIRQ(TICKER_COUNTER_IRQn1);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_K20XX/TARGET_K20D50M/us_ticker.c

@@ -158,3 +158,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT_TICKER_IRQ);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_K20XX/TARGET_TEENSY3_1/us_ticker.c

@@ -81,3 +81,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT3_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_KLXX/us_ticker.c

@@ -223,3 +223,8 @@ void us_ticker_fire_interrupt(void)
 
 #endif
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K66F/us_ticker.c

@@ -136,3 +136,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT3_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K82F/us_ticker.c

@@ -136,3 +136,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT3_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_KL27Z/us_ticker.c

@@ -152,3 +152,8 @@ void us_ticker_fire_interrupt(void)
 
     NVIC_SetPendingIRQ(TPM2_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_KL43Z/us_ticker.c

@@ -152,3 +152,8 @@ void us_ticker_fire_interrupt(void)
 
     NVIC_SetPendingIRQ(TPM2_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_KL82Z/us_ticker.c

@@ -137,3 +137,8 @@ void us_ticker_fire_interrupt(void)
     NVIC_SetPendingIRQ(PIT0_IRQn);
 }
 
+void us_ticker_free(void)
+{
+
+}
+

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_KW24D/us_ticker.c

@@ -136,3 +136,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT3_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_KW41Z/us_ticker.c

@@ -152,3 +152,8 @@ void us_ticker_fire_interrupt(void)
 
     NVIC_SetPendingIRQ(TPM2_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K22F/us_ticker.c

@@ -136,3 +136,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT3_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K24F/us_ticker.c

@@ -136,3 +136,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT3_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/us_ticker.c

@@ -136,3 +136,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT3_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/api/lp_ticker.c

@@ -117,4 +117,9 @@ void lp_ticker_clear_interrupt(void)
     LPTMR_ClearStatusFlags(LPTMR0, kLPTMR_TimerCompareFlag);
 }
 
+void lp_ticker_free(void)
+{
+
+}
+
 #endif /* DEVICE_LPTICKER */

targets/TARGET_Maxim/TARGET_MAX32600/rtc_api.c

@@ -255,3 +255,8 @@ uint32_t lp_ticker_read(void)
 {
     return rtc_read64();
 }
+
+void lp_ticker_free(void)
+{
+
+}

targets/TARGET_Maxim/TARGET_MAX32600/us_ticker.c

@@ -268,3 +268,8 @@ void us_ticker_set(timestamp_t timestamp)
         NVIC_SetPendingIRQ(US_TIMER_IRQn);
     }
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Maxim/TARGET_MAX32610/rtc_api.c

@@ -252,3 +252,8 @@ inline uint32_t lp_ticker_read(void)
 {
     return rtc_read64();
 }
+
+void lp_ticker_free(void)
+{
+
+}

targets/TARGET_Maxim/TARGET_MAX32610/us_ticker.c

@@ -268,3 +268,8 @@ void us_ticker_set(timestamp_t timestamp)
         NVIC_SetPendingIRQ(US_TIMER_IRQn);
     }
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Maxim/TARGET_MAX32620/rtc_api.c

@@ -306,3 +306,8 @@ inline uint32_t lp_ticker_read(void)
 {
     return rtc_read64();
 }
+
+void lp_ticker_free(void)
+{
+
+}

targets/TARGET_Maxim/TARGET_MAX32620/us_ticker.c

@@ -299,3 +299,8 @@ void us_ticker_set(timestamp_t timestamp)
         NVIC_SetPendingIRQ(US_TIMER_IRQn);
     }
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NORDIC/TARGET_MCU_NRF51822/us_ticker.c

@@ -318,6 +318,11 @@ void us_ticker_clear_interrupt(void)
     NRF_RTC1->EVENTS_COMPARE[0] = 0;
 }
 
+void us_ticker_free(void)
+{
+
+}
+
 
 #if defined (__CC_ARM)         /* ARMCC Compiler */
 

targets/TARGET_NXP/TARGET_LPC11U6X/us_ticker.c

@@ -65,3 +65,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER->IR = 1;
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC11UXX/us_ticker.c

@@ -65,3 +65,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER->IR = 1;
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC11XX_11CXX/us_ticker.c

@@ -65,3 +65,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER->IR = 1;
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC13XX/us_ticker.c

@@ -65,3 +65,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER->IR = 1;
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC15XX/us_ticker.c

@@ -86,3 +86,8 @@ void us_ticker_clear_interrupt(void) {
     // Clear SCT3 event 0 interrupt flag
     LPC_SCT3->EVFLAG = (1 << 0);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC176X/us_ticker.c

@@ -77,3 +77,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER->IR = 1;
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC408X/us_ticker.c

@@ -67,3 +67,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER->IR = 1;
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC43XX/us_ticker.c

@@ -67,3 +67,8 @@ void us_ticker_disable_interrupt(void) {
 void us_ticker_clear_interrupt(void) {
     US_TICKER_TIMER->IR = 1;
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC81X/us_ticker.c

@@ -136,3 +136,8 @@ void us_ticker_clear_interrupt() {
         ticker_expired_count_us += ticker_fullcount_us;
     }
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_LPC82X/us_ticker.c

@@ -109,3 +109,8 @@ void us_ticker_clear_interrupt() {
           ticker_expired_count_us += ticker_fullcount_us;
     }
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/lp_ticker.c

@@ -112,4 +112,9 @@ void lp_ticker_clear_interrupt(void)
     GPT_ClearStatusFlags(GPT2, kGPT_OutputCompare1Flag);
 }
 
+void lp_ticker_free(void)
+{
+
+}
+
 #endif /* DEVICE_LPTICKER */

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/us_ticker.c

@@ -140,3 +140,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(PIT_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/us_ticker.c

@@ -97,3 +97,8 @@ void us_ticker_fire_interrupt(void)
 {
     NVIC_SetPendingIRQ(CTIMER1_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_ONSEMI/TARGET_NCS36510/ncs36510_us_ticker_api.c

@@ -203,3 +203,8 @@ void us_ticker_set_interrupt(timestamp_t timestamp)
     // we set the full reminder of 16 bit, the next ISR will do the upper part
     ticker_set(delta & 0xFFFF);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/us_ticker.c

@@ -119,3 +119,8 @@ void us_ticker_disable_interrupt(void)
 void us_ticker_clear_interrupt(void)
 {
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_STM/lp_ticker.c

@@ -229,7 +229,10 @@ void lp_ticker_clear_interrupt(void)
     NVIC_ClearPendingIRQ(LPTIM1_IRQn);
 }
 
+void lp_ticker_free(void)
+{
 
+}
 
 /*****************************************************************/
 /* lpticker_lptim config is 0 or not defined in json config file */
@@ -278,6 +281,11 @@ void lp_ticker_clear_interrupt(void)
     NVIC_DisableIRQ(RTC_WKUP_IRQn);
 }
 
+void lp_ticker_free(void)
+{
+
+}
+
 #endif /* MBED_CONF_TARGET_LPTICKER_LPTIM */
 
 #endif /* DEVICE_LPTICKER */

targets/TARGET_STM/us_ticker.c

@@ -256,3 +256,9 @@ void restore_timer_ctx(void)
     __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_1, timer_ccr1_reg);
     TIM_MST->DIER = timer_dier_reg;
 }
+
+void us_ticker_free(void)
+{
+
+}
+

targets/TARGET_TOSHIBA/TARGET_TMPM066/us_ticker.c

@@ -107,3 +107,8 @@ void us_ticker_clear_interrupt(void)
 {
     //no flags to clear
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_TOSHIBA/TARGET_TMPM3H6/us_ticker.c

@@ -83,3 +83,8 @@ void us_ticker_clear_interrupt(void)
     TSB_T32A0->STC = T32A_INT_MASK;
     NVIC_ClearPendingIRQ(INTT32A00C_IRQn);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_TOSHIBA/TARGET_TMPM46B/us_ticker.c

@@ -131,3 +131,8 @@ void us_ticker_clear_interrupt(void)
 {
     // No flag to clear
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_WIZNET/TARGET_W7500x/us_ticker.c

@@ -130,3 +130,8 @@ void us_ticker_clear_interrupt(void)
 {
     DUALTIMER_IntClear(TIMER_0);
 }
+
+void us_ticker_free(void)
+{
+
+}

targets/TARGET_ublox/TARGET_HI2110/lp_ticker.c

@@ -346,3 +346,8 @@ void lp_ticker_clear_interrupt(void)
     g_user_interrupt_pending = false;
     g_user_interrupt_set = false;
 }
+
+void lp_ticker_free(void)
+{
+
+}

targets/TARGET_ublox/TARGET_HI2110/us_ticker.c

@@ -251,3 +251,8 @@ void us_ticker_clear_interrupt(void)
     g_timer_extra_loops_required = 0;
     g_us_overflow_increment = 0;
 }
+
+void us_ticker_free(void)
+{
+
+}