NRF5x: Remove duplicate lp ticker initialization from I2C, flash, trng.

Author: mprse

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF51/flash_api.c

@@ -72,7 +72,6 @@ int32_t flash_init(flash_t *obj)
 
     if (first_init) {
         first_init = false;
-        lp_ticker_init();
     }
 
     return 0;

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF51/i2c_api.c

@@ -39,7 +39,7 @@
 
 #include "i2c_api.h"
 
-#if DEVICE_I2C
+#if (defined(DEVICE_I2C) && defined(DEVICE_LPTICKER))
 
 #include "mbed_assert.h"
 #include "mbed_error.h"

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF51/trng_api.c

@@ -73,7 +73,6 @@ void trng_init(trng_t *obj)
 
     if (first_init) {
         first_init = false;
-        lp_ticker_init();
     }
 }
 

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/flash_api.c

@@ -36,7 +36,7 @@
  *
  */
 
-#if DEVICE_FLASH
+#if (defined(DEVICE_FLASH) && defined(DEVICE_LPTICKER))
 
 #include "hal/flash_api.h"
 #include "hal/lp_ticker_api.h"
@@ -84,8 +84,6 @@ int32_t flash_init(flash_t *obj)
         result = nrf_fstorage_init(&nordic_fstorage, &nrf_fstorage_nvmc, NULL);
 #endif
 
-        /* Initialize low power ticker for timeouts. */
-        lp_ticker_init();
     }
 
     /* Convert Nordic SDK error code to mbed HAL. */

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/i2c_api.c

@@ -36,8 +36,7 @@
  *
  */
 
-#if DEVICE_I2C
-
+#if (defined(DEVICE_I2C) && defined(DEVICE_LPTICKER))
 /* I2C
  *
  * This HAL implementation uses the nrf_drv_twi.h API primarily but switches to TWI for the
@@ -131,8 +130,6 @@ void i2c_init(i2c_t *obj, PinName sda, PinName scl)
 
     if (first_init) {
         first_init = false;
-        /* Initialize low power ticker. Used for timeouts. */
-        lp_ticker_init();
 
         /* Register interrupt handlers in driver with the NVIC. */
         NVIC_SetVector(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn, (uint32_t) SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler);