diff --git a/ports/nrf/boards/common.ld b/ports/nrf/boards/common.ld
index 2e1e6f7358..6edd33cf01 100644
--- a/ports/nrf/boards/common.ld
+++ b/ports/nrf/boards/common.ld
@@ -16,7 +16,7 @@ SECTIONS
         . = ALIGN(4);
         _etext = .;          /* define a global symbol at end of code */
     } >FLASH_TEXT
-     
+
     /*
     .ARM.extab :
     {
@@ -30,10 +30,10 @@ SECTIONS
         __exidx_end = .;
     } >FLASH
     */
-        
+
     /* used by the startup to initialize data */
     _sidata = LOADADDR(.data);
-        
+
     /* This is the initialized data section
     The program executes knowing that the data is in the RAM
     but the loader puts the initial values in the FLASH (inidata).
@@ -49,7 +49,7 @@ SECTIONS
         . = ALIGN(4);
         _edata = .;        /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
     } >RAM AT>FLASH_TEXT
-            
+
     /* Uninitialized data section */
     .bss :
     {
diff --git a/ports/nrf/boards/microbit/modules/microbitdisplay.c b/ports/nrf/boards/microbit/modules/microbitdisplay.c
index 936a3ec977..2d70817503 100644
--- a/ports/nrf/boards/microbit/modules/microbitdisplay.c
+++ b/ports/nrf/boards/microbit/modules/microbitdisplay.c
@@ -256,15 +256,15 @@ static const uint16_t render_timings[] =
 // The scale is (approximately) exponential,
 // each step is approx x1.9 greater than the previous.
 {   0, // Bright, Ticks Duration, Relative power
-    2,   //   1,   2,     32µs,     inf
-    2,   //   2,   4,     64µs,     200%
-    4,   //   3,   8,     128µs,    200%
-    7,   //   4,   15,    240µs,    187%
-    13,  //   5,   28,    448µs,    187%
-    25,  //   6,   53,    848µs,    189%
-    49,  //   7,   102,   1632µs,   192%
-    97,  //   8,   199,   3184µs,   195%
-// Always on  9,   375,   6000µs,   188%
+    2,   //   1,   2,     32us,     inf
+    2,   //   2,   4,     64us,     200%
+    4,   //   3,   8,     128us,    200%
+    7,   //   4,   15,    240us,    187%
+    13,  //   5,   28,    448us,    187%
+    25,  //   6,   53,    848us,    189%
+    49,  //   7,   102,   1632us,   192%
+    97,  //   8,   199,   3184us,   195%
+// Always on  9,   375,   6000us,   188%
 };
 
 #define DISPLAY_TICKER_SLOT 1
@@ -281,7 +281,7 @@ static int32_t callback(void) {
         return -1;
     }
     display->previous_brightness = brightness;
-    // Return interval (in 16µs ticks) until next callback
+    // Return interval (in 16us ticks) until next callback
     return render_timings[brightness];
 }
 
diff --git a/ports/nrf/boards/microbit/modules/microbitimage.c b/ports/nrf/boards/microbit/modules/microbitimage.c
index 9cba30f878..fca5075089 100644
--- a/ports/nrf/boards/microbit/modules/microbitimage.c
+++ b/ports/nrf/boards/microbit/modules/microbitimage.c
@@ -62,7 +62,7 @@ STATIC void microbit_image_print(const mp_print_t *print, mp_obj_t self_in, mp_p
 
 uint8_t monochromeGetPixelValue(monochrome_5by5_t * p_mono, mp_int_t x, mp_int_t y) {
     unsigned int index = y*5+x;
-    if (index == 24) 
+    if (index == 24)
         return p_mono->pixel44;
     return (p_mono->bits24[index>>3] >> (index&7))&1;
 }
@@ -380,7 +380,7 @@ mp_obj_t microbit_image_set_pixel(mp_uint_t n_args, const mp_obj_t *args) {
         mp_raise_ValueError("index cannot be negative");
     }
     mp_int_t bright = mp_obj_get_int(args[3]);
-    if (bright < 0 || bright > MAX_BRIGHTNESS) 
+    if (bright < 0 || bright > MAX_BRIGHTNESS)
         mp_raise_ValueError("brightness out of bounds.");
     if (x < imageWidth(self) && y < imageHeight(self)) {
         greyscaleSetPixelValue(&(self->greyscale), x, y, bright);
@@ -610,7 +610,7 @@ microbit_image_obj_t *microbit_image_dim(microbit_image_obj_t *lhs, mp_float_t f
 #else
 microbit_image_obj_t *microbit_image_dim(microbit_image_obj_t *lhs, mp_int_t fval) {
 #endif
-    if (fval < 0) 
+    if (fval < 0)
         mp_raise_ValueError("Brightness multiplier must not be negative.");
     greyscale_t *result = greyscale_new(imageWidth(lhs), imageHeight(lhs));
     for (int x = 0; x < imageWidth(lhs); ++x) {
@@ -639,7 +639,7 @@ microbit_image_obj_t *microbit_image_sum(microbit_image_obj_t *lhs, microbit_ima
             int val;
             int lval = imageGetPixelValue(lhs, x,y);
             int rval = imageGetPixelValue(rhs, x,y);
-            if (add) 
+            if (add)
                 val = min(lval + rval, MAX_BRIGHTNESS);
             else
                 val = max(0, lval - rval);
@@ -647,7 +647,7 @@ microbit_image_obj_t *microbit_image_sum(microbit_image_obj_t *lhs, microbit_ima
         }
     }
     return (microbit_image_obj_t *)result;
-}                      
+}
 
 STATIC mp_obj_t image_binary_op(mp_binary_op_t op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
     if (mp_obj_get_type(lhs_in) != &microbit_image_type) {
@@ -697,9 +697,9 @@ const mp_obj_type_t microbit_image_type = {
     .buffer_p = {NULL},
     .locals_dict = (mp_obj_dict_t*)&microbit_image_locals_dict,
 };
- 
+
 typedef struct _scrolling_string_t {
-    mp_obj_base_t base; 
+    mp_obj_base_t base;
     char const *str;
     mp_uint_t len;
     mp_obj_t ref;
@@ -708,7 +708,7 @@ typedef struct _scrolling_string_t {
 } scrolling_string_t;
 
 typedef struct _scrolling_string_iterator_t {
-    mp_obj_base_t base; 
+    mp_obj_base_t base;
     mp_obj_t ref;
     greyscale_t *img;
     char const *next_char;
@@ -962,7 +962,7 @@ const mp_obj_type_t microbit_facade_iterator_type = {
 };
 
 mp_obj_t microbit_facade_iterator(mp_obj_t iterable_in, mp_obj_iter_buf_t *iter_buf) {
-	(void)iter_buf;
+    (void)iter_buf;
     facade_iterator_t *result = m_new_obj(facade_iterator_t);
     string_image_facade_t *iterable = (string_image_facade_t *)iterable_in;
     result->base.type = &microbit_facade_iterator_type;
diff --git a/ports/nrf/boards/microbit/modules/microbitimage.h b/ports/nrf/boards/microbit/modules/microbitimage.h
index 23edbd6baa..41a6aff4cc 100644
--- a/ports/nrf/boards/microbit/modules/microbitimage.h
+++ b/ports/nrf/boards/microbit/modules/microbitimage.h
@@ -2,15 +2,15 @@
 #define __MICROPY_INCLUDED_MICROBIT_IMAGE_H__
 
 #include "py/runtime.h"
-   
+
 #define MAX_BRIGHTNESS 9
 
-/** Monochrome images are immutable, which means that 
+/** Monochrome images are immutable, which means that
  * we only need one bit per pixel which saves quite a lot
  * of memory */
 
 /* we reserve a couple of bits, so we won't need to modify the
- * layout if we need to add more functionality or subtypes. */ 
+ * layout if we need to add more functionality or subtypes. */
 #define TYPE_AND_FLAGS \
     mp_obj_base_t base; \
     uint8_t five:1; \
diff --git a/ports/nrf/device/startup_nrf51822.c b/ports/nrf/device/startup_nrf51822.c
index 2f15f0f49c..2063e27274 100644
--- a/ports/nrf/device/startup_nrf51822.c
+++ b/ports/nrf/device/startup_nrf51822.c
@@ -48,8 +48,8 @@ void Reset_Handler(void) {
     // RAM on in on-mode
     *ram_on_addr   = 3; // block 0 and 1
     *ram_on_b_addr = 3; // block 2 and 3
-#if 0 
-    // RAM on in off-mode 
+#if 0
+    // RAM on in off-mode
     ram_on_addr   = 1 << 16;
     ram_on_b_addr = 1 << 17;
 #endif
diff --git a/ports/nrf/drivers/bluetooth/ble_drv.c b/ports/nrf/drivers/bluetooth/ble_drv.c
index ff3c885c15..e01d118487 100644
--- a/ports/nrf/drivers/bluetooth/ble_drv.c
+++ b/ports/nrf/drivers/bluetooth/ble_drv.c
@@ -418,7 +418,7 @@ bool ble_drv_advertise_data(ubluepy_advertise_data_t * p_adv_params) {
                                        p_adv_params->p_device_name,
                                        p_adv_params->device_name_len) != 0) {
             nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
-	              "Can not apply device name in the stack."));
+                "Can not apply device name in the stack."));
         }
 
         BLE_DRIVER_LOG("Device name applied\n");
diff --git a/ports/nrf/drivers/bluetooth/ble_uart.c b/ports/nrf/drivers/bluetooth/ble_uart.c
index 4a23cd6d2c..b94780e260 100644
--- a/ports/nrf/drivers/bluetooth/ble_uart.c
+++ b/ports/nrf/drivers/bluetooth/ble_uart.c
@@ -190,7 +190,7 @@ void ble_uart_init0(void) {
     ble_uart_char_tx.service_handle = ble_uart_service.handle;
     bool retval = ble_drv_characteristic_add(&ble_uart_char_tx);
     if (retval) {
-    	ble_uart_char_tx.p_service = &ble_uart_service;
+        ble_uart_char_tx.p_service = &ble_uart_service;
     }
     mp_obj_list_append(ble_uart_service.char_list, MP_OBJ_FROM_PTR(&ble_uart_char_tx));
 
@@ -198,7 +198,7 @@ void ble_uart_init0(void) {
     ble_uart_char_rx.service_handle = ble_uart_service.handle;
     retval = ble_drv_characteristic_add(&ble_uart_char_rx);
     if (retval) {
-    	ble_uart_char_rx.p_service = &ble_uart_service;
+        ble_uart_char_rx.p_service = &ble_uart_service;
     }
     mp_obj_list_append(ble_uart_service.char_list, MP_OBJ_FROM_PTR(&ble_uart_char_rx));
 
diff --git a/ports/nrf/drivers/ticker.h b/ports/nrf/drivers/ticker.h
index f6a95a9a25..86f1c24477 100644
--- a/ports/nrf/drivers/ticker.h
+++ b/ports/nrf/drivers/ticker.h
@@ -35,7 +35,7 @@
 #define __MICROPY_INCLUDED_LIB_TICKER_H__
 
 /*************************************
- * 62.5kHz (16µs cycle time) ticker.
+ * 62.5kHz (16us cycle time) ticker.
  ************************************/
 
 #include "nrf.h"
diff --git a/ports/nrf/fatfs_port.c b/ports/nrf/fatfs_port.c
index 13ac21fb1b..6a17f627bd 100644
--- a/ports/nrf/fatfs_port.c
+++ b/ports/nrf/fatfs_port.c
@@ -28,6 +28,6 @@
 #include "lib/oofatfs/ff.h"
 
 DWORD get_fattime(void) {
-	// TODO: Implement this function. For now, fake it.
+    // TODO: Implement this function. For now, fake it.
     return ((2016 - 1980) << 25) | ((12) << 21) | ((4) << 16) | ((00) << 11) | ((18) << 5) | (23 / 2);
 }
diff --git a/ports/nrf/main.c b/ports/nrf/main.c
index 29dd34f69d..38d41bd8c5 100644
--- a/ports/nrf/main.c
+++ b/ports/nrf/main.c
@@ -94,7 +94,7 @@ extern uint32_t _heap_start;
 extern uint32_t _heap_end;
 
 int main(int argc, char **argv) {
-    
+
 soft_reset:
     mp_stack_set_top(&_ram_end);
 
@@ -185,8 +185,8 @@ pin_init0();
             mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd));
             mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd_slash_lib));
 
-			// use SD card as current directory
-			f_chdrive("/sd");
+            // use SD card as current directory
+            f_chdrive("/sd");
         }
         no_mem_for_sd:;
     }
@@ -293,18 +293,17 @@ MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
 void HardFault_Handler(void)
 {
 #if defined(NRF52_SERIES)
-	static volatile uint32_t reg;
-	static volatile uint32_t reg2;
-	static volatile uint32_t bfar;
-	reg = SCB->HFSR;
-	reg2 = SCB->CFSR;
-	bfar = SCB->BFAR;
-	for (int i = 0; i < 0; i++)
-	{
-		(void)reg;
-		(void)reg2;
-		(void)bfar;
-	}
+    static volatile uint32_t reg;
+    static volatile uint32_t reg2;
+    static volatile uint32_t bfar;
+    reg = SCB->HFSR;
+    reg2 = SCB->CFSR;
+    bfar = SCB->BFAR;
+    for (int i = 0; i < 0; i++) {
+        (void)reg;
+        (void)reg2;
+        (void)bfar;
+    }
 #endif
 }
 
diff --git a/ports/nrf/modules/ble/help_sd.h b/ports/nrf/modules/ble/help_sd.h
index 027bbdd513..69ee5a5381 100644
--- a/ports/nrf/modules/ble/help_sd.h
+++ b/ports/nrf/modules/ble/help_sd.h
@@ -39,7 +39,7 @@
 "  ble.enabled()   -- check whether bluetooth stack is enabled\n" \
 "  ble.address()   -- return device address as text string\n" \
 "\n"
- 
+
 #else
 #define HELP_TEXT_SD
 #endif // MICROPY_PY_BLE
diff --git a/ports/nrf/modules/machine/pin.c b/ports/nrf/modules/machine/pin.c
index d56abfd04e..4e5b3434f9 100644
--- a/ports/nrf/modules/machine/pin.c
+++ b/ports/nrf/modules/machine/pin.c
@@ -127,12 +127,12 @@ const pin_obj_t *pin_find(mp_obj_t user_obj) {
     const pin_obj_t *pin_obj;
     // If pin is SMALL_INT
     if (mp_obj_is_small_int(user_obj)) {
-	uint8_t value = MP_OBJ_SMALL_INT_VALUE(user_obj);
+        uint8_t value = MP_OBJ_SMALL_INT_VALUE(user_obj);
         for (uint8_t i = 0; i < machine_pin_num_of_pins; i++) {
             if (machine_pin_obj[i].pin == value) {
                 return &machine_pin_obj[i];
-	    }
-	}
+            }
+        }
     }
 
     // If a pin was provided, then use it
@@ -364,8 +364,8 @@ STATIC mp_obj_t pin_obj_init_helper(const pin_obj_t *self, mp_uint_t n_args, con
     nrf_gpio_pin_dir_t mode = (nrf_gpio_pin_dir_t)args[0].u_int;
 
     // Connect input or not
-    nrf_gpio_pin_input_t input = (mode == NRF_GPIO_PIN_DIR_INPUT) ? NRF_GPIO_PIN_INPUT_CONNECT 
-	                                                          : NRF_GPIO_PIN_INPUT_DISCONNECT;
+    nrf_gpio_pin_input_t input = (mode == NRF_GPIO_PIN_DIR_INPUT) ? NRF_GPIO_PIN_INPUT_CONNECT
+                                                                  : NRF_GPIO_PIN_INPUT_DISCONNECT;
 
     if (mode == NRF_GPIO_PIN_DIR_OUTPUT || mode == NRF_GPIO_PIN_DIR_INPUT) {
         nrf_gpio_cfg(self->pin,
@@ -496,7 +496,7 @@ STATIC void pin_common_irq_handler(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t
 }
 
 STATIC mp_obj_t pin_irq(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
-	enum {ARG_handler, ARG_trigger, ARG_wake};
+    enum {ARG_handler, ARG_trigger, ARG_wake};
     static const mp_arg_t allowed_args[] = {
         { MP_QSTR_handler, MP_ARG_OBJ | MP_ARG_REQUIRED,  {.u_obj = mp_const_none} },
         { MP_QSTR_trigger, MP_ARG_INT,  {.u_int = NRF_GPIOTE_POLARITY_LOTOHI | NRF_GPIOTE_POLARITY_HITOLO} },
diff --git a/ports/nrf/modules/machine/pwm.c b/ports/nrf/modules/machine/pwm.c
index cf8749302b..195d47e6b1 100644
--- a/ports/nrf/modules/machine/pwm.c
+++ b/ports/nrf/modules/machine/pwm.c
@@ -269,7 +269,7 @@ STATIC mp_obj_t machine_hard_pwm_make_new(mp_arg_val_t *args) {
     } else {
         self->p_config->mode = MODE_HIGH_LOW;
     }
- 
+
     return MP_OBJ_FROM_PTR(self);
 }
 
diff --git a/ports/nrf/modules/machine/spi.c b/ports/nrf/modules/machine/spi.c
index 1c401b76d2..4361a8f8f9 100644
--- a/ports/nrf/modules/machine/spi.c
+++ b/ports/nrf/modules/machine/spi.c
@@ -154,9 +154,9 @@ STATIC int spi_find(mp_obj_t id) {
 void spi_transfer(const machine_hard_spi_obj_t * self, size_t len, const void * src, void * dest) {
     nrfx_spi_xfer_desc_t xfer_desc = {
         .p_tx_buffer = src,
-	.tx_length   = len,
-	.p_rx_buffer = dest,
-	.rx_length   = len
+        .tx_length   = len,
+        .p_rx_buffer = dest,
+        .rx_length   = len
     };
 
     nrfx_spi_xfer(self->p_spi, &xfer_desc, 0);
@@ -340,7 +340,7 @@ STATIC void machine_hard_spi_init(mp_obj_t self_in, mp_arg_val_t *args) {
 
     // Active high
     if (args[ARG_INIT_polarity].u_int == 0) {
-	if (args[ARG_INIT_phase].u_int == 0) {
+        if (args[ARG_INIT_phase].u_int == 0) {
             // First clock edge
             self->p_config->mode = NRF_SPI_MODE_0;
         } else {
@@ -349,7 +349,7 @@ STATIC void machine_hard_spi_init(mp_obj_t self_in, mp_arg_val_t *args) {
         }
     // Active low
     } else {
-	if (args[ARG_INIT_phase].u_int == 0) {
+        if (args[ARG_INIT_phase].u_int == 0) {
             // First clock edge
             self->p_config->mode = NRF_SPI_MODE_2;
         } else {
diff --git a/ports/nrf/modules/machine/temp.c b/ports/nrf/modules/machine/temp.c
index 361d988857..007a7e5fd8 100644
--- a/ports/nrf/modules/machine/temp.c
+++ b/ports/nrf/modules/machine/temp.c
@@ -67,9 +67,9 @@ STATIC mp_obj_t machine_temp_make_new(const mp_obj_type_t *type, size_t n_args,
     // parse args
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
-    
+
     machine_temp_obj_t *self = m_new_obj(machine_temp_obj_t);
-    
+
     self->base.type = &machine_temp_type;
 
     return MP_OBJ_FROM_PTR(self);
diff --git a/ports/nrf/modules/random/modrandom.c b/ports/nrf/modules/random/modrandom.c
index f67bffb277..a1395bce61 100644
--- a/ports/nrf/modules/random/modrandom.c
+++ b/ports/nrf/modules/random/modrandom.c
@@ -72,7 +72,7 @@ uint32_t machine_rng_generate_random_word(void) {
             status = sd_rand_application_vector_get((uint8_t *)&retval, 4); // Extract 4 bytes
         } while (status != 0);
 
-	return retval;
+        return retval;
     }
 #endif
 
diff --git a/ports/nrf/modules/ubluepy/ubluepy_delegate.c b/ports/nrf/modules/ubluepy/ubluepy_delegate.c
index 07bb7f4928..74ad52bbfa 100644
--- a/ports/nrf/modules/ubluepy/ubluepy_delegate.c
+++ b/ports/nrf/modules/ubluepy/ubluepy_delegate.c
@@ -72,7 +72,7 @@ STATIC const mp_rom_map_elem_t ubluepy_delegate_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_handleConnection),   MP_ROM_PTR(&ubluepy_delegate_handle_conn_obj) },
     { MP_ROM_QSTR(MP_QSTR_handleNotification), MP_ROM_PTR(&ubluepy_delegate_handle_notif_obj) },
 #if 0
-	{ MP_ROM_QSTR(MP_QSTR_handleDiscovery),    MP_ROM_PTR(&ubluepy_delegate_handle_disc_obj) },
+    { MP_ROM_QSTR(MP_QSTR_handleDiscovery),    MP_ROM_PTR(&ubluepy_delegate_handle_disc_obj) },
 #endif
 };
 
diff --git a/ports/nrf/modules/ubluepy/ubluepy_peripheral.c b/ports/nrf/modules/ubluepy/ubluepy_peripheral.c
index 3a45e56a07..8f07daa2a3 100644
--- a/ports/nrf/modules/ubluepy/ubluepy_peripheral.c
+++ b/ports/nrf/modules/ubluepy/ubluepy_peripheral.c
@@ -481,7 +481,7 @@ STATIC const mp_rom_map_elem_t ubluepy_peripheral_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_advertise),              MP_ROM_PTR(&ubluepy_peripheral_advertise_obj) },
 #endif
 #if MICROPY_PY_UBLUEPY_OBSERVER
-	// Nothing yet.
+    // Nothing yet.
 #endif
 };
 
diff --git a/ports/nrf/modules/ubluepy/ubluepy_service.c b/ports/nrf/modules/ubluepy/ubluepy_service.c
index e5bf42a09f..a38136611f 100644
--- a/ports/nrf/modules/ubluepy/ubluepy_service.c
+++ b/ports/nrf/modules/ubluepy/ubluepy_service.c
@@ -162,7 +162,7 @@ STATIC const mp_rom_map_elem_t ubluepy_service_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_addCharacteristic),  MP_ROM_PTR(&ubluepy_service_add_char_obj) },
     { MP_ROM_QSTR(MP_QSTR_getCharacteristics), MP_ROM_PTR(&ubluepy_service_get_chars_obj) },
 #if 0
-	// Properties
+    // Properties
     { MP_ROM_QSTR(MP_QSTR_peripheral), MP_ROM_PTR(&ubluepy_service_get_peripheral_obj) },
 #endif
     { MP_ROM_QSTR(MP_QSTR_uuid),       MP_ROM_PTR(&ubluepy_service_get_uuid_obj) },
diff --git a/ports/nrf/mphalport.h b/ports/nrf/mphalport.h
index 18ff454fe6..b374da403c 100644
--- a/ports/nrf/mphalport.h
+++ b/ports/nrf/mphalport.h
@@ -42,7 +42,7 @@ typedef enum
 } HAL_StatusTypeDef;
 
 static inline uint32_t hal_tick_fake(void) {
-	return 0;
+    return 0;
 }
 
 #define mp_hal_ticks_ms hal_tick_fake // TODO: implement. Right now, return 0 always
diff --git a/ports/nrf/pin_defs_nrf5.h b/ports/nrf/pin_defs_nrf5.h
index c84d048a42..99020ded75 100644
--- a/ports/nrf/pin_defs_nrf5.h
+++ b/ports/nrf/pin_defs_nrf5.h
@@ -53,9 +53,9 @@ enum {
 };
 
 #define PIN_DEFS_PORT_AF_UNION \
-		NRF_UART_Type  *UART;
-//		NRF_SPI_Type  *SPIM;
-//		NRF_SPIS_Type *SPIS;
+    NRF_UART_Type  *UART;
+//  NRF_SPI_Type  *SPIM;
+//  NRF_SPIS_Type *SPIS;
 
 
 typedef NRF_GPIO_Type pin_gpio_t;