code style fix ARMmbed#2

Author: Archcady

targets/TARGET_Realtek/TARGET_AMEBA/analogin_api.c

@@ -135,7 +135,9 @@ float analogin_read(analogin_t *obj){
     uint32_t AnaloginDatMsk      = 0xFFFF;
     uint8_t  AnaloginIdx         = 0;
     uint32_t AnalogDat           = 0;
-    uint32_t Offset = 0x2980;
+
+    //no auto-calibration implemented yet, uses hard coded calibrate
+    uint32_t Offset        = 0x2980;
     uint32_t AnalogDatFull = 0xAA00;
 
     PSAL_ADC_MNGT_ADPT      pSalADCMngtAdpt     = NULL;

targets/TARGET_Realtek/TARGET_AMEBA/flash_api.c

@@ -81,8 +81,6 @@ void flash_init(flash_t *obj)
     }
     flashobj.SpicInitPara.flashtype = SpicInitParaAllClk[0][0].flashtype;
 
-    //DBG_8195A("Flash ID is = %x %x %x \n",SpicInitParaAllClk[0][0].id[0],SpicInitParaAllClk[0][0].id[1],SpicInitParaAllClk[0][0].id[2]);
-
 }
 void flash_turnon()
 {
@@ -474,7 +472,7 @@ int  flash_burst_read(flash_t *obj, uint32_t address, uint32_t Length, uint8_t *
 
     // Wait flash busy done (wip=0)
     SpicWaitWipDoneRefinedRtl8195A(flashobj.SpicInitPara);
-    SpicUserReadRtl8195A(Length, address, data,SpicOneBitMode);
+    SpicUserReadRtl8195A(Length, address, data, SpicOneBitMode);
     SpicDisableRtl8195A();
     return 1;
 }

targets/TARGET_Realtek/TARGET_AMEBA/i2c_api.c

@@ -554,17 +554,6 @@ int i2c_slave_write(i2c_t *obj, const char *data, int length) {
     return 1;
 }
 
-/** \brief Description of i2c_slave_set_for_rd_req
- *  
- *    i2c_slave_set_for_rd_req is used to set/clear i2c slave RD_REQ interrupt mask.
- *    If RD_REQ interrupt is set, slave could invoke read request callback when it gets 
- *    a read command from other i2c master.
- *    
- *   \param i2c_t *obj  : i2c object
- *   \param int set     : set or clear for read request. Once it's set, i2c would invoke read request callback when a
- *                        read command is sent to it.
- *   \return result
- */
 #endif // CONFIG_I2C_SLAVE_EN
 
 #endif // CONFIG_I2C_EN

targets/TARGET_Realtek/TARGET_AMEBA/us_ticker.c

@@ -66,12 +66,12 @@ uint32_t us_ticker_read()
 
     tick_cnt = HalTimerOp.HalTimerReadCount(SYS_TIM_ID);
     tick_cnt = 0xffffffff - tick_cnt;   // it's a down counter
-    ticks_125ms = tick_cnt/(GTIMER_CLK_HZ/8);
-    ticks_remain = tick_cnt - (ticks_125ms*(GTIMER_CLK_HZ/8));
-    us_tick = ticks_125ms * 125000;
-    us_tick += (ticks_remain * 1000000)/GTIMER_CLK_HZ;
+    ticks_125ms = tick_cnt/(GTIMER_CLK_HZ/8);  //use 125ms as a intermediate unit; 
+    ticks_remain = tick_cnt - (ticks_125ms*(GTIMER_CLK_HZ/8));  //calculate the remainder
+    us_tick = ticks_125ms * 125000;  //change unit to us, 125ms is 125000 us
+    us_tick += (ticks_remain * 1000000)/GTIMER_CLK_HZ;  //also use us as unit
 
-    return ((uint32_t)us_tick);
+    return ((uint32_t)us_tick);  //return ticker value in micro-seconds (us)
 }
 
 void us_ticker_set_interrupt(timestamp_t timestamp)