diff --git a/cpu/cc253x/dev/cc2530-rf.c b/cpu/cc253x/dev/cc2530-rf.c
index a07125f0b..25b16ea84 100644
--- a/cpu/cc253x/dev/cc2530-rf.c
+++ b/cpu/cc253x/dev/cc2530-rf.c
@@ -67,9 +67,9 @@
 #define RF_TX_LED_OFF()		leds_off(LEDS_GREEN);
 #else
 #define RF_RX_LED_ON()
-#define RF_RX_LED_OFF()		
+#define RF_RX_LED_OFF()
 #define RF_TX_LED_ON()
-#define RF_TX_LED_OFF()		
+#define RF_TX_LED_OFF()
 #endif
 /*---------------------------------------------------------------------------*/
 #define DEBUG 0
@@ -240,8 +240,8 @@ prepare(const void *payload, unsigned short payload_len)
   /* Send the phy length byte first */
   RFD = payload_len + CHECKSUM_LEN; /* Payload plus FCS */
   for(i = 0; i < payload_len; i++) {
-    RFD = ((unsigned char*) (payload))[i];
-    PUTHEX(((unsigned char*)(payload))[i]);
+    RFD = ((unsigned char *)(payload))[i];
+    PUTHEX(((unsigned char *)(payload))[i]);
   }
   PUTSTRING("\n");
 
@@ -264,7 +264,7 @@ transmit(unsigned short transmit_len)
     t0 = RTIMER_NOW();
     on();
     rf_flags |= WAS_OFF;
-    while (RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + ONOFF_TIME));
+    while(RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + ONOFF_TIME));
   }
 
   if(channel_clear() == CC2530_RF_CCA_BUSY) {
@@ -305,7 +305,7 @@ transmit(unsigned short transmit_len)
   ENERGEST_OFF(ENERGEST_TYPE_TRANSMIT);
   ENERGEST_ON(ENERGEST_TYPE_LISTEN);
 
-  if(rf_flags & WAS_OFF){
+  if(rf_flags & WAS_OFF) {
     off();
   }
 
@@ -379,11 +379,11 @@ read(void *buf, unsigned short bufsize)
   PUTSTRING(" bytes) = ");
   len -= CHECKSUM_LEN;
   for(i = 0; i < len; ++i) {
-    ((unsigned char*)(buf))[i] = RFD;
+    ((unsigned char *)(buf))[i] = RFD;
 #if CC2530_RF_CONF_HEXDUMP
-    io_arch_writeb(((unsigned char*)(buf))[i]);
+    io_arch_writeb(((unsigned char *)(buf))[i]);
 #endif
-    PUTHEX(((unsigned char*)(buf))[i]);
+    PUTHEX(((unsigned char *)(buf))[i]);
   }
   PUTSTRING("\n");
 
@@ -483,17 +483,16 @@ off(void)
   return 1;
 }
 /*---------------------------------------------------------------------------*/
-const struct radio_driver cc2530_rf_driver =
-{
-    init,
-    prepare,
-    transmit,
-    send,
-    read,
-    channel_clear,
-    receiving_packet,
-    pending_packet,
-    on,
-    off,
+const struct radio_driver cc2530_rf_driver = {
+  init,
+  prepare,
+  transmit,
+  send,
+  read,
+  channel_clear,
+  receiving_packet,
+  pending_packet,
+  on,
+  off,
 };
 /*---------------------------------------------------------------------------*/
diff --git a/cpu/cc253x/dev/clock.c b/cpu/cc253x/dev/clock.c
index e82def45c..ff1c4cf4a 100644
--- a/cpu/cc253x/dev/clock.c
+++ b/cpu/cc253x/dev/clock.c
@@ -121,13 +121,13 @@ clock_init(void)
 
   /* Initialize tick value */
   timer_value = ST0;
-  timer_value += ((unsigned long int) ST1) << 8;
-  timer_value += ((unsigned long int) ST2) << 16;
+  timer_value += ((unsigned long int)ST1) << 8;
+  timer_value += ((unsigned long int)ST2) << 16;
   timer_value += TICK_VAL;
-  ST2 = (unsigned char) (timer_value >> 16);
-  ST1 = (unsigned char) (timer_value >> 8);
-  ST0 = (unsigned char) timer_value;
-  
+  ST2 = (unsigned char)(timer_value >> 16);
+  ST1 = (unsigned char)(timer_value >> 8);
+  ST0 = (unsigned char)timer_value;
+
   STIE = 1; /* IEN0.STIE interrupt enable */
 }
 /*---------------------------------------------------------------------------*/
@@ -147,15 +147,15 @@ clock_isr(void) __interrupt(ST_VECTOR)
    * Next interrupt occurs after the current time + TICK_VAL
    */
   timer_value = ST0;
-  timer_value += ((unsigned long int) ST1) << 8;
-  timer_value += ((unsigned long int) ST2) << 16;
+  timer_value += ((unsigned long int)ST1) << 8;
+  timer_value += ((unsigned long int)ST2) << 16;
   timer_value += TICK_VAL;
-  ST2 = (unsigned char) (timer_value >> 16);
-  ST1 = (unsigned char) (timer_value >> 8);
-  ST0 = (unsigned char) timer_value;
-  
+  ST2 = (unsigned char)(timer_value >> 16);
+  ST1 = (unsigned char)(timer_value >> 8);
+  ST0 = (unsigned char)timer_value;
+
   ++count;
-  
+
   /* Make sure the CLOCK_CONF_SECOND is a power of two, to ensure
      that the modulo operation below becomes a logical and and not
      an expensive divide. Algorithm from Wikipedia:
@@ -167,7 +167,7 @@ clock_isr(void) __interrupt(ST_VECTOR)
   if(count % CLOCK_CONF_SECOND == 0) {
     ++seconds;
   }
-  
+
 #if CLOCK_CONF_STACK_FRIENDLY
   sleep_flag = 1;
 #else
@@ -176,7 +176,7 @@ clock_isr(void) __interrupt(ST_VECTOR)
     etimer_request_poll();
   }
 #endif
-  
+
   STIF = 0; /* IRCON.STIF */
   ENERGEST_OFF(ENERGEST_TYPE_IRQ);
   ENABLE_INTERRUPTS();
diff --git a/cpu/cc253x/dev/dma.c b/cpu/cc253x/dev/dma.c
index 9a4c5db01..93e01cf1d 100644
--- a/cpu/cc253x/dev/dma.c
+++ b/cpu/cc253x/dev/dma.c
@@ -17,7 +17,7 @@
 
 #if DMA_ON
 struct dma_config dma_conf[DMA_CHANNEL_COUNT]; /* DMA Descriptors */
-struct process * dma_callback[DMA_CHANNEL_COUNT];
+struct process *dma_callback[DMA_CHANNEL_COUNT];
 /*---------------------------------------------------------------------------*/
 void
 dma_init(void)
@@ -31,7 +31,7 @@ dma_init(void)
   }
 
   /* The address of the descriptor for Channel 0 is configured separately */
-  tmp_ptr = (uint16_t) &(dma_conf[0]);
+  tmp_ptr = (uint16_t)&(dma_conf[0]);
   DMA0CFGH = tmp_ptr >> 8;
   DMA0CFGL = tmp_ptr;
 
@@ -41,7 +41,7 @@ dma_init(void)
    * derived by the SoC
    */
 #if (DMA_CHANNEL_COUNT > 1)
-  tmp_ptr = (uint16_t) &(dma_conf[1]);
+  tmp_ptr = (uint16_t)&(dma_conf[1]);
   DMA1CFGH = tmp_ptr >> 8;
   DMA1CFGL = tmp_ptr;
 #endif
@@ -54,7 +54,7 @@ dma_init(void)
  * completes, the ISR will poll this process.
  */
 void
-dma_associate_process(struct process * p, uint8_t c)
+dma_associate_process(struct process *p, uint8_t c)
 {
   if((!c) || (c >= DMA_CHANNEL_COUNT)) {
     return;
@@ -80,15 +80,15 @@ dma_reset(uint8_t c)
     return;
   }
   DMA_ABORT(c);
-  dma_conf[c].src_h = (uint16_t) &dummy >> 8;
-  dma_conf[c].src_l = (uint16_t) &dummy;
-  dma_conf[c].dst_h = (uint16_t) &dummy >> 8;
-  dma_conf[c].dst_l = (uint16_t) &dummy;
+  dma_conf[c].src_h = (uint16_t)&dummy >> 8;
+  dma_conf[c].src_l = (uint16_t)&dummy;
+  dma_conf[c].dst_h = (uint16_t)&dummy >> 8;
+  dma_conf[c].dst_l = (uint16_t)&dummy;
   dma_conf[c].len_h = 0;
   dma_conf[c].len_l = 1;
   dma_conf[c].wtt = DMA_BLOCK;
   dma_conf[c].inc_prio = DMA_PRIO_GUARANTEED;
-  DMA_TRIGGER(c); // The operation order is important
+  DMA_TRIGGER(c); /** The operation order is important */
   DMA_ARM(c);
   while(DMAARM & (1 << c));
 }
diff --git a/cpu/cc253x/dev/dma.h b/cpu/cc253x/dev/dma.h
index 7f767bc68..606be2ae6 100644
--- a/cpu/cc253x/dev/dma.h
+++ b/cpu/cc253x/dev/dma.h
@@ -139,12 +139,12 @@ extern dma_config_t dma_conf[DMA_CHANNEL_COUNT];
 
 /* Functions Declarations */
 void dma_init(void);
-void dma_associate_process (struct process * p, uint8_t c);
+void dma_associate_process(struct process *p, uint8_t c);
 void dma_reset(uint8_t c);
 
 /* Only link the ISR when DMA_ON is .... on */
 #if DMA_ON
-void dma_isr( void ) __interrupt (DMA_VECTOR);
+void dma_isr(void) __interrupt(DMA_VECTOR);
 #endif
 
 #endif /*__DMA_H*/
diff --git a/cpu/cc253x/dev/dma_intr.c b/cpu/cc253x/dev/dma_intr.c
index 633fb3cda..863691e9e 100644
--- a/cpu/cc253x/dev/dma_intr.c
+++ b/cpu/cc253x/dev/dma_intr.c
@@ -16,7 +16,7 @@
 #include "cc253x.h"
 
 #if DMA_ON
-extern struct process * dma_callback[DMA_CHANNEL_COUNT];
+extern struct process *dma_callback[DMA_CHANNEL_COUNT];
 #endif
 
 /*---------------------------------------------------------------------------*/
@@ -38,17 +38,17 @@ extern void spi_rx_dma_callback(void);
 #pragma exclude bits
 #endif
 void
-dma_isr(void) __interrupt (DMA_VECTOR)
+dma_isr(void) __interrupt(DMA_VECTOR)
 {
 #if DMA_ON
   uint8_t i;
 #endif
-  EA=0;
+  EA = 0;
   DMAIF = 0;
 #ifdef HAVE_RF_DMA
   if((DMAIRQ & 1) != 0) {
     DMAIRQ = ~1;
-    DMAARM=0x81;
+    DMAARM = 0x81;
     rf_dma_callback_isr();
   }
 #endif
diff --git a/cpu/cc253x/dev/port2.h b/cpu/cc253x/dev/port2.h
index f70d5d036..10f9774ec 100644
--- a/cpu/cc253x/dev/port2.h
+++ b/cpu/cc253x/dev/port2.h
@@ -38,7 +38,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 struct cc253x_p2_handler {
   struct cc253x_p2_handler *next;
-  uint8_t (*cb) (void);
+  uint8_t (* cb)(void);
 };
 
 void cc253x_p2_register_handler(struct cc253x_p2_handler *h);
diff --git a/cpu/cc253x/dev/uart-intr.c b/cpu/cc253x/dev/uart-intr.c
index ebe1814c1..89b7c8fb1 100644
--- a/cpu/cc253x/dev/uart-intr.c
+++ b/cpu/cc253x/dev/uart-intr.c
@@ -18,16 +18,16 @@
 #include  "dev/leds.h"
 
 #if UART0_ENABLE
-static int (*uart0_input_handler)(unsigned char c);
+static int (* uart0_input_handler)(unsigned char c);
 #endif
 #if UART1_ENABLE
-static int (*uart1_input_handler)(unsigned char c);
+static int (* uart1_input_handler)(unsigned char c);
 #endif
 
 #if UART0_ENABLE
 /*---------------------------------------------------------------------------*/
 void
-uart0_set_input(int (*input)(unsigned char c))
+uart0_set_input(int (* input)(unsigned char c))
 {
   uart0_input_handler = input;
 }
@@ -39,7 +39,7 @@ uart0_set_input(int (*input)(unsigned char c))
 #pragma exclude bits
 #endif
 void
-uart0_rx_isr(void) __interrupt (URX0_VECTOR)
+uart0_rx_isr(void) __interrupt(URX0_VECTOR)
 {
   ENERGEST_ON(ENERGEST_TYPE_IRQ);
   leds_toggle(LEDS_YELLOW);
@@ -55,7 +55,7 @@ uart0_rx_isr(void) __interrupt (URX0_VECTOR)
 #if UART1_ENABLE
 /*---------------------------------------------------------------------------*/
 void
-uart1_set_input(int (*input)(unsigned char c))
+uart1_set_input(int (* input)(unsigned char c))
 {
   uart1_input_handler = input;
 }
@@ -67,7 +67,7 @@ uart1_set_input(int (*input)(unsigned char c))
 #pragma exclude bits
 #endif
 void
-uart1_rx_isr(void) __interrupt (URX1_VECTOR)
+uart1_rx_isr(void) __interrupt(URX1_VECTOR)
 {
   ENERGEST_ON(ENERGEST_TYPE_IRQ);
   URX1IF = 0;
diff --git a/cpu/cc253x/dev/uart0.h b/cpu/cc253x/dev/uart0.h
index 45839e120..3245964bf 100644
--- a/cpu/cc253x/dev/uart0.h
+++ b/cpu/cc253x/dev/uart0.h
@@ -20,10 +20,10 @@
 void uart0_init();
 void uart0_writeb(uint8_t byte);
 
-void uart0_set_input(int (*input)(unsigned char c));
+void uart0_set_input(int (* input)(unsigned char c));
 
 #if UART0_CONF_WITH_INPUT
-void uart0_rx_isr( void ) __interrupt (URX0_VECTOR);
+void uart0_rx_isr(void) __interrupt(URX0_VECTOR);
 /* Macro to turn on / off UART RX Interrupt */
 #define UART0_RX_INT(v) do { URX0IE = v; } while(0)
 #define UART0_RX_EN()   do {   U0CSR |= UCSR_RE; } while(0)
diff --git a/cpu/cc253x/dev/uart1.h b/cpu/cc253x/dev/uart1.h
index aea8bec48..203cfaa02 100644
--- a/cpu/cc253x/dev/uart1.h
+++ b/cpu/cc253x/dev/uart1.h
@@ -20,9 +20,9 @@
 void uart1_init();
 void uart1_writeb(uint8_t byte);
 
-void uart1_set_input(int (*input)(unsigned char c));
+void uart1_set_input(int (* input)(unsigned char c));
 #if UART1_CONF_WITH_INPUT
-void uart1_rx_isr( void ) __interrupt (URX1_VECTOR);
+void uart1_rx_isr(void) __interrupt(URX1_VECTOR);
 /* Macro to turn on / off UART RX Interrupt */
 #define UART1_RX_INT(v) do { URX1IE = v; } while(0)
 #else
diff --git a/cpu/cc253x/mtarch.h b/cpu/cc253x/mtarch.h
index 89d7766e2..2272d7a5b 100644
--- a/cpu/cc253x/mtarch.h
+++ b/cpu/cc253x/mtarch.h
@@ -29,16 +29,16 @@
  *
  */
 
- /*
-  * \file
-  * 	Stub header file for multi-threading. It doesn't do anything, it
-  * 	just exists so that mt.c can compile cleanly.
-  *
-  * 	This is based on the original mtarch.h for z80 by Takahide Matsutsuka
-  * 
-  * \author
-  *	  George Oikonomou - <oikonomou@users.sourceforge.net>
-  */
+/*
+ * \file
+ *     Stub header file for multi-threading. It doesn't do anything, it
+ *     just exists so that mt.c can compile cleanly.
+ *
+ *     This is based on the original mtarch.h for z80 by Takahide Matsutsuka
+ *
+ * \author
+ *       George Oikonomou - <oikonomou@users.sourceforge.net>
+ */
 #ifndef __MTARCH_H__
 #define __MTARCH_H__
 
@@ -47,4 +47,3 @@ struct mtarch_thread {
 };
 
 #endif /* __MTARCH_H__ */
-
diff --git a/cpu/cc253x/rtimer-arch.c b/cpu/cc253x/rtimer-arch.c
index 6bf4405ca..71262910c 100644
--- a/cpu/cc253x/rtimer-arch.c
+++ b/cpu/cc253x/rtimer-arch.c
@@ -87,8 +87,8 @@ rtimer_arch_schedule(rtimer_clock_t t)
   /* Switch to capture mode before writing T1CC1x and
    * set the compare mode values so we can get an interrupt after t */
   RT_MODE_CAPTURE();
-  T1CC1L = (unsigned char) t;
-  T1CC1H = (unsigned char) (t >> 8);
+  T1CC1L = (unsigned char)t;
+  T1CC1H = (unsigned char)(t >> 8);
   RT_MODE_COMPARE();
 
   /* Turn on compare mode interrupt */
diff --git a/cpu/cc253x/stack.c b/cpu/cc253x/stack.c
index d6daf25a6..d116b02f2 100644
--- a/cpu/cc253x/stack.c
+++ b/cpu/cc253x/stack.c
@@ -60,7 +60,7 @@ poison_loop:
 uint8_t
 stack_get_max(void)
 {
-  __data uint8_t * sp = (__data uint8_t *) 0xff;
+  __data uint8_t *sp = (__data uint8_t *)0xff;
   uint8_t free = 0;
 
   while(*sp-- == STACK_POISON) {