diff --git a/components/esp8266/driver/i2c_master.c b/components/esp8266/driver/i2c_master.c
index 8db8e693..eb04be23 100644
--- a/components/esp8266/driver/i2c_master.c
+++ b/components/esp8266/driver/i2c_master.c
@@ -31,8 +31,7 @@ LOCAL uint8 m_nLastSCL;
  *                uint8 SCL
  * Returns      : NONE
 *******************************************************************************/
-LOCAL void ICACHE_FLASH_ATTR
-i2c_master_setDC(uint8 SDA, uint8 SCL)
+LOCAL void i2c_master_setDC(uint8 SDA, uint8 SCL)
 {
     SDA &= 0x01;
     SCL &= 0x01;
@@ -60,8 +59,7 @@ i2c_master_setDC(uint8 SDA, uint8 SCL)
  * Parameters   : NONE
  * Returns      : uint8 - SDA bit value
 *******************************************************************************/
-LOCAL uint8 ICACHE_FLASH_ATTR
-i2c_master_getDC(void)
+LOCAL uint8 i2c_master_getDC(void)
 {
     uint8 sda_out;
     ETS_INTR_LOCK();
@@ -76,8 +74,7 @@ i2c_master_getDC(void)
  * Parameters   : NONE
  * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_init(void)
+void i2c_master_init(void)
 {
     uint8 i;
 
@@ -110,8 +107,7 @@ i2c_master_init(void)
  * Parameters   : NONE
  * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_gpio_init(void)
+void i2c_master_gpio_init(void)
 {
     ETS_GPIO_INTR_DISABLE() ;
 //    ETS_INTR_LOCK();
@@ -138,8 +134,7 @@ i2c_master_gpio_init(void)
  * Parameters   : NONE
  * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_start(void)
+void i2c_master_start(void)
 {
     i2c_master_setDC(1, m_nLastSCL);
     i2c_master_wait(5);
@@ -155,8 +150,7 @@ i2c_master_start(void)
  * Parameters   : NONE
  * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_stop(void)
+void i2c_master_stop(void)
 {
     i2c_master_wait(5);
 
@@ -174,8 +168,7 @@ i2c_master_stop(void)
  * Parameters   : uint8 level - 0 or 1
  * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_setAck(uint8 level)
+void i2c_master_setAck(uint8 level)
 {
     i2c_master_setDC(m_nLastSDA, 0);
     i2c_master_wait(5);
@@ -195,8 +188,7 @@ i2c_master_setAck(uint8 level)
  * Parameters   : NONE
  * Returns      : uint8 - ack value, 0 or 1
 *******************************************************************************/
-uint8 ICACHE_FLASH_ATTR
-i2c_master_getAck(void)
+uint8 i2c_master_getAck(void)
 {
     uint8 retVal;
     i2c_master_setDC(m_nLastSDA, 0);
@@ -220,8 +212,7 @@ i2c_master_getAck(void)
 * Parameters   : NONE
 * Returns      : true : get ack ; false : get nack
 *******************************************************************************/
-bool ICACHE_FLASH_ATTR
-i2c_master_checkAck(void)
+bool i2c_master_checkAck(void)
 {
     if (i2c_master_getAck()) {
         return FALSE;
@@ -236,8 +227,7 @@ i2c_master_checkAck(void)
 * Parameters   : NONE
 * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_send_ack(void)
+void i2c_master_send_ack(void)
 {
     i2c_master_setAck(0x0);
 }
@@ -248,8 +238,7 @@ i2c_master_send_ack(void)
 * Parameters   : NONE
 * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_send_nack(void)
+void i2c_master_send_nack(void)
 {
     i2c_master_setAck(0x1);
 }
@@ -260,8 +249,7 @@ i2c_master_send_nack(void)
  * Parameters   : NONE
  * Returns      : uint8 - readed value
 *******************************************************************************/
-uint8 ICACHE_FLASH_ATTR
-i2c_master_readByte(void)
+uint8 i2c_master_readByte(void)
 {
     uint8 retVal = 0;
     uint8 k, i;
@@ -300,8 +288,7 @@ i2c_master_readByte(void)
  * Parameters   : uint8 wrdata - write value
  * Returns      : NONE
 *******************************************************************************/
-void ICACHE_FLASH_ATTR
-i2c_master_writeByte(uint8 wrdata)
+void i2c_master_writeByte(uint8 wrdata)
 {
     uint8 dat;
     sint8 i;
diff --git a/components/esp8266/driver/spi_interface.c b/components/esp8266/driver/spi_interface.c
index 29eb9536..7d42f325 100644
--- a/components/esp8266/driver/spi_interface.c
+++ b/components/esp8266/driver/spi_interface.c
@@ -72,7 +72,7 @@ void __ShowRegValue(const char* func, uint32_t line)
  * @brief Based on pAttr initialize SPI module.
  *
  */
-void ICACHE_FLASH_ATTR SPIInit(SpiNum spiNum, SpiAttr* pAttr)
+void SPIInit(SpiNum spiNum, SpiAttr* pAttr)
 {
     if ((spiNum > SpiNum_HSPI)
             || (NULL == pAttr)) {
@@ -189,7 +189,7 @@ void ICACHE_FLASH_ATTR SPIInit(SpiNum spiNum, SpiAttr* pAttr)
  * @brief Set address value by master mode.
  *
  */
-void ICACHE_FLASH_ATTR SPIMasterCfgAddr(SpiNum spiNum, uint32_t addr)
+void SPIMasterCfgAddr(SpiNum spiNum, uint32_t addr)
 {
     if (spiNum > SpiNum_HSPI) {
         return;
@@ -203,7 +203,7 @@ void ICACHE_FLASH_ATTR SPIMasterCfgAddr(SpiNum spiNum, uint32_t addr)
  * @brief Set command value by master mode.
  *
  */
-void ICACHE_FLASH_ATTR SPIMasterCfgCmd(SpiNum spiNum, uint32_t cmd)
+void SPIMasterCfgCmd(SpiNum spiNum, uint32_t cmd)
 {
     if (spiNum > SpiNum_HSPI) {
         return;
@@ -218,7 +218,7 @@ void ICACHE_FLASH_ATTR SPIMasterCfgCmd(SpiNum spiNum, uint32_t cmd)
  * @brief Send data to slave.
  *
  */
-int ICACHE_FLASH_ATTR SPIMasterSendData(SpiNum spiNum, SpiData* pInData)
+int SPIMasterSendData(SpiNum spiNum, SpiData* pInData)
 {
     char idx = 0;
 
@@ -300,7 +300,7 @@ int ICACHE_FLASH_ATTR SPIMasterSendData(SpiNum spiNum, SpiData* pInData)
  * @brief Receive data from slave.
  *
  */
-int ICACHE_FLASH_ATTR SPIMasterRecvData(SpiNum spiNum, SpiData* pOutData)
+int SPIMasterRecvData(SpiNum spiNum, SpiData* pOutData)
 {
     char idx = 0;
 
@@ -390,7 +390,7 @@ int ICACHE_FLASH_ATTR SPIMasterRecvData(SpiNum spiNum, SpiData* pOutData)
  * @brief Load data to send buffer by slave mode.
  *
  */
-int ICACHE_FLASH_ATTR SPISlaveSendData(SpiNum spiNum, uint32_t* pInData, uint8_t outLen)
+int SPISlaveSendData(SpiNum spiNum, uint32_t* pInData, uint8_t outLen)
 {
     if (NULL == pInData) {
         return -1;
@@ -409,7 +409,7 @@ int ICACHE_FLASH_ATTR SPISlaveSendData(SpiNum spiNum, uint32_t* pInData, uint8_t
  * @brief Configurate slave prepare for receive data.
  *
  */
-int ICACHE_FLASH_ATTR SPISlaveRecvData(SpiNum spiNum, void(*isrFunc)(void*))
+int SPISlaveRecvData(SpiNum spiNum, void(*isrFunc)(void*))
 {
     if ((spiNum > SpiNum_HSPI)) {
         return -1;
@@ -437,7 +437,7 @@ int ICACHE_FLASH_ATTR SPISlaveRecvData(SpiNum spiNum, void(*isrFunc)(void*))
  * @brief Send data to slave(ESP8266 register of RD_STATUS or WR_STATUS).
  *
  */
-void ICACHE_FLASH_ATTR SPIMasterSendStatus(SpiNum spiNum, uint8_t data)
+void SPIMasterSendStatus(SpiNum spiNum, uint8_t data)
 {
     if (spiNum > SpiNum_HSPI) {
         return;
@@ -468,7 +468,7 @@ void ICACHE_FLASH_ATTR SPIMasterSendStatus(SpiNum spiNum, uint8_t data)
  * @brief Receive status register from slave(ESP8266).
  *
  */
-int ICACHE_FLASH_ATTR SPIMasterRecvStatus(SpiNum spiNum)
+int SPIMasterRecvStatus(SpiNum spiNum)
 {
     if (spiNum > SpiNum_HSPI) {
         return -1;
@@ -503,7 +503,7 @@ int ICACHE_FLASH_ATTR SPIMasterRecvStatus(SpiNum spiNum)
  * @brief Select SPI CS pin.
  *
  */
-void ICACHE_FLASH_ATTR SPICsPinSelect(SpiNum spiNum, SpiPinCS pinCs)
+void SPICsPinSelect(SpiNum spiNum, SpiPinCS pinCs)
 {
     if (spiNum > SpiNum_HSPI) {
         return;
@@ -518,7 +518,7 @@ void ICACHE_FLASH_ATTR SPICsPinSelect(SpiNum spiNum, SpiPinCS pinCs)
  * @brief Enable SPI interrupt source.
  *
  */
-void ICACHE_FLASH_ATTR SPIIntEnable(SpiNum spiNum, SpiIntSrc intSrc)
+void SPIIntEnable(SpiNum spiNum, SpiIntSrc intSrc)
 {
     if (spiNum > SpiNum_HSPI) {
         return;
@@ -531,7 +531,7 @@ void ICACHE_FLASH_ATTR SPIIntEnable(SpiNum spiNum, SpiIntSrc intSrc)
  * @brief Disable SPI interrupt source.
  *
  */
-void ICACHE_FLASH_ATTR SPIIntDisable(SpiNum spiNum, SpiIntSrc intSrc)
+void SPIIntDisable(SpiNum spiNum, SpiIntSrc intSrc)
 {
     if (spiNum > SpiNum_HSPI) {
         return;
@@ -544,7 +544,7 @@ void ICACHE_FLASH_ATTR SPIIntDisable(SpiNum spiNum, SpiIntSrc intSrc)
  * @brief Clear all of SPI interrupt source.
  *
  */
-void ICACHE_FLASH_ATTR SPIIntClear(SpiNum spiNum)
+void SPIIntClear(SpiNum spiNum)
 {
     if (spiNum > SpiNum_HSPI) {
         return;