diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/TencentOS_tiny.uvoptx b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/TencentOS_tiny.uvoptx
new file mode 100644
index 00000000..39d33d66
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+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/TencentOS_tiny.uvoptx
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+ ### uVision Project, (C) Keil Software
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diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/TencentOS_tiny.uvprojx b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/TencentOS_tiny.uvprojx
new file mode 100644
index 00000000..25bc1a69
--- /dev/null
+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/TencentOS_tiny.uvprojx
@@ -0,0 +1,837 @@
+
+
+
+ 2.1
+
+ ### uVision Project, (C) Keil Software
+
+
+
+ TencentOS_tiny
+ 0x4
+ ARM-ADS
+ 5060750::V5.06 update 6 (build 750)::ARMCC
+ 0
+
+
+ STM32L431RCTx
+ STMicroelectronics
+ Keil.STM32L4xx_DFP.2.2.0
+ http://www.keil.com/pack
+ IRAM(0x20000000-0x2000FFFF) IROM(0x8000000-0x803FFFF) CLOCK(8000000) FPU2 CPUTYPE("Cortex-M4")
+
+
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+ ..\..\BSP\Inc;..\..\..\..\platform\vendor_bsp\st\STM32L4xx_HAL_Driver\Inc;..\..\..\..\platform\vendor_bsp\st\STM32L4xx_HAL_Driver\Legacy;..\..\..\..\platform\vendor_bsp\st\CMSIS\Device\ST\STM32L4xx\Include;..\..\..\..\platform\vendor_bsp\st\CMSIS\Include;..\..\..\..\kernel\core\include;..\..\TOS-CONFIG;..\..\..\..\platform\arch\arm\cortex-m4\keil;..\..\..\..\kernel\pm\include;..\..\..\..\osal\cmsis_os;..\..\..\..\arch\arm\arm-v7m\common\include;..\..\..\..\arch\arm\arm-v7m\cortex-m4\armcc;..\..\BSP\Hardware\DHT11;..\..\BSP\Hardware\OLED;..\..\BSP\Hardware\BH1750;..\..\..\..\devices\bc35_28_95_lwm2m;..\..\..\..\net\at\include;..\..\..\..\kernel\hal\include;..\..\..\..\net\sal_module_wrapper
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+ Application/MDK-ARM
+
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+ startup_stm32l431xx.s
+ 2
+ startup_stm32l431xx.s
+
+
+
+
+ Application/User
+
+
+ gpio.c
+ 1
+ ..\..\BSP\Src\gpio.c
+
+
+ main.c
+ 1
+ ..\..\BSP\Src\main.c
+
+
+ mcu_init.c
+ 1
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+
+ stm32l4xx_hal_msp.c
+ 1
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+
+ stm32l4xx_it_module.c
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+ usart.c
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+ spi.c
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+
+
+
+
+ examples
+
+
+ nb-iot_example.c
+ 1
+ ..\..\..\..\examples\nb-iot_demo\nb-iot_example.c
+
+
+
+
+ Drivers/STM32L4xx_HAL_Driver
+
+
+ stm32l4xx_hal_tim.c
+ 1
+ ..\..\..\..\platform\vendor_bsp\st\STM32L4xx_HAL_Driver\Src\stm32l4xx_hal_tim.c
+
+
+ stm32l4xx_hal_tim_ex.c
+ 1
+ ..\..\..\..\platform\vendor_bsp\st\STM32L4xx_HAL_Driver\Src\stm32l4xx_hal_tim_ex.c
+
+
+ stm32l4xx_hal_uart.c
+ 1
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+
+
+ stm32l4xx_hal_uart_ex.c
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+ stm32l4xx_hal.c
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+ stm32l4xx_hal_i2c_ex.c
+ 1
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+
+
+ stm32l4xx_hal_rcc.c
+ 1
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+
+
+ stm32l4xx_hal_rcc_ex.c
+ 1
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+
+
+ stm32l4xx_hal_flash.c
+ 1
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+
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+ stm32l4xx_hal_flash_ex.c
+ 1
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+
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+
+
+ stm32l4xx_hal_gpio.c
+ 1
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+
+
+ stm32l4xx_hal_dma.c
+ 1
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+
+
+ stm32l4xx_hal_dma_ex.c
+ 1
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+
+
+ stm32l4xx_hal_pwr.c
+ 1
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+
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+ stm32l4xx_hal_pwr_ex.c
+ 1
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+
+
+ stm32l4xx_hal_cortex.c
+ 1
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+
+
+ stm32l4xx_hal_adc_ex.c
+ 1
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+
+
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+
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+ 1
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+ stm32l4xx_hal_spi_ex.c
+ 1
+ ..\..\..\..\platform\vendor_bsp\st\STM32L4xx_HAL_Driver\Src\stm32l4xx_hal_spi_ex.c
+
+
+
+
+ Drivers/CMSIS
+
+
+ system_stm32l4xx.c
+ 1
+ ..\..\BSP\Src\system_stm32l4xx.c
+
+
+
+
+ Hardware
+
+
+ DHT11_BUS.c
+ 1
+ ..\..\BSP\Hardware\DHT11\DHT11_BUS.c
+
+
+ oled.c
+ 1
+ ..\..\BSP\Hardware\OLED\oled.c
+
+
+
+
+ kernel
+
+
+ tos_binary_heap.c
+ 1
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+
+
+ tos_char_fifo.c
+ 1
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+
+ tos_completion.c
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+
+ tos_countdownlatch.c
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+
+
+ tos_event.c
+ 1
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+
+
+ tos_global.c
+ 1
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+
+
+ tos_mail_queue.c
+ 1
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+
+
+ tos_message_queue.c
+ 1
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+
+
+ tos_mmblk.c
+ 1
+ ..\..\..\..\kernel\core\tos_mmblk.c
+
+
+ tos_mmheap.c
+ 1
+ ..\..\..\..\kernel\core\tos_mmheap.c
+
+
+ tos_mutex.c
+ 1
+ ..\..\..\..\kernel\core\tos_mutex.c
+
+
+ tos_pend.c
+ 1
+ ..\..\..\..\kernel\core\tos_pend.c
+
+
+ tos_priority_mail_queue.c
+ 1
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+
+
+ tos_priority_message_queue.c
+ 1
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+
+
+ tos_priority_queue.c
+ 1
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+
+
+ tos_ring_queue.c
+ 1
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+
+
+ tos_robin.c
+ 1
+ ..\..\..\..\kernel\core\tos_robin.c
+
+
+ tos_sched.c
+ 1
+ ..\..\..\..\kernel\core\tos_sched.c
+
+
+ tos_sem.c
+ 1
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+
+
+ tos_sys.c
+ 1
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+
+
+ tos_task.c
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+
+
+ tos_tick.c
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+
+
+ tos_time.c
+ 1
+ ..\..\..\..\kernel\core\tos_time.c
+
+
+ tos_timer.c
+ 1
+ ..\..\..\..\kernel\core\tos_timer.c
+
+
+
+
+ cpu
+
+
+ port_s.S
+ 2
+ ..\..\..\..\arch\arm\arm-v7m\cortex-m4\armcc\port_s.S
+
+
+ tos_cpu.c
+ 1
+ ..\..\..\..\arch\arm\arm-v7m\common\tos_cpu.c
+
+
+ port_c.c
+ 1
+ ..\..\..\..\arch\arm\arm-v7m\cortex-m4\armcc\port_c.c
+
+
+
+
+ cmsis
+
+
+ cmsis_os.c
+ 1
+ ..\..\..\..\osal\cmsis_os\cmsis_os.c
+
+
+
+
+ config
+
+
+ tos_config.h
+ 5
+ ..\..\TOS-CONFIG\tos_config.h
+
+
+
+
+ at
+
+
+ tos_at.c
+ 1
+ ..\..\..\..\net\at\src\tos_at.c
+
+
+ tos_at_utils.c
+ 1
+ ..\..\..\..\net\at\src\tos_at_utils.c
+
+
+
+
+ devices
+
+
+ bc35_28_95_lwm2m.c
+ 1
+ ..\..\..\..\devices\bc35_28_95_lwm2m\bc35_28_95_lwm2m.c
+
+
+
+
+ sal_module_wrapper
+
+
+ sal_module_wrapper.c
+ 1
+ ..\..\..\..\net\sal_module_wrapper\sal_module_wrapper.c
+
+
+
+
+ hal
+
+
+ tos_hal_uart.c
+ 1
+ ..\..\..\..\platform\hal\st\stm32l4xx\src\tos_hal_uart.c
+
+
+
+
+ ::CMSIS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/startup_stm32l431xx.s b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/startup_stm32l431xx.s
new file mode 100644
index 00000000..6a5c15a5
--- /dev/null
+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/nb-iot_demo/startup_stm32l431xx.s
@@ -0,0 +1,404 @@
+;********************** COPYRIGHT(c) 2017 STMicroelectronics ******************
+;* File Name : startup_stm32l431xx.s
+;* Author : MCD Application Team
+;* Description : STM32L431xx Ultra Low Power devices vector table for MDK-ARM toolchain.
+;* This module performs:
+;* - Set the initial SP
+;* - Set the initial PC == Reset_Handler
+;* - Set the vector table entries with the exceptions ISR address
+;* - Branches to __main in the C library (which eventually
+;* calls main()).
+;* After Reset the Cortex-M4 processor is in Thread mode,
+;* priority is Privileged, and the Stack is set to Main.
+;* <<< Use Configuration Wizard in Context Menu >>>
+;*******************************************************************************
+;*
+;* Redistribution and use in source and binary forms, with or without modification,
+;* are permitted provided that the following conditions are met:
+;* 1. Redistributions of source code must retain the above copyright notice,
+;* this list of conditions and the following disclaimer.
+;* 2. Redistributions in binary form must reproduce the above copyright notice,
+;* this list of conditions and the following disclaimer in the documentation
+;* and/or other materials provided with the distribution.
+;* 3. Neither the name of STMicroelectronics nor the names of its contributors
+;* may be used to endorse or promote products derived from this software
+;* without specific prior written permission.
+;*
+;* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+;* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+;* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+;* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+;* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+;* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+;* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+;* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+;* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+;*
+;*******************************************************************************
+;
+; Amount of memory (in bytes) allocated for Stack
+; Tailor this value to your application needs
+; Stack Configuration
+; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
+;
+
+Stack_Size EQU 0x100
+
+ AREA STACK, NOINIT, READWRITE, ALIGN=3
+Stack_Mem SPACE Stack_Size
+__initial_sp
+
+
+; Heap Configuration
+; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
+;
+
+Heap_Size EQU 0x100
+
+ AREA HEAP, NOINIT, READWRITE, ALIGN=3
+__heap_base
+Heap_Mem SPACE Heap_Size
+__heap_limit
+
+ PRESERVE8
+ THUMB
+
+
+; Vector Table Mapped to Address 0 at Reset
+ AREA RESET, DATA, READONLY
+ EXPORT __Vectors
+ EXPORT __Vectors_End
+ EXPORT __Vectors_Size
+
+__Vectors DCD __initial_sp ; Top of Stack
+ DCD Reset_Handler ; Reset Handler
+ DCD NMI_Handler ; NMI Handler
+ DCD HardFault_Handler ; Hard Fault Handler
+ DCD MemManage_Handler ; MPU Fault Handler
+ DCD BusFault_Handler ; Bus Fault Handler
+ DCD UsageFault_Handler ; Usage Fault Handler
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD SVC_Handler ; SVCall Handler
+ DCD DebugMon_Handler ; Debug Monitor Handler
+ DCD 0 ; Reserved
+ DCD PendSV_Handler ; PendSV Handler
+ DCD SysTick_Handler ; SysTick Handler
+
+ ; External Interrupts
+ DCD WWDG_IRQHandler ; Window WatchDog
+ DCD PVD_PVM_IRQHandler ; PVD/PVM1/PVM2/PVM3/PVM4 through EXTI Line detection
+ DCD TAMP_STAMP_IRQHandler ; Tamper and TimeStamps through the EXTI line
+ DCD RTC_WKUP_IRQHandler ; RTC Wakeup through the EXTI line
+ DCD FLASH_IRQHandler ; FLASH
+ DCD RCC_IRQHandler ; RCC
+ DCD EXTI0_IRQHandler ; EXTI Line0
+ DCD EXTI1_IRQHandler ; EXTI Line1
+ DCD EXTI2_IRQHandler ; EXTI Line2
+ DCD EXTI3_IRQHandler ; EXTI Line3
+ DCD EXTI4_IRQHandler ; EXTI Line4
+ DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1
+ DCD DMA1_Channel2_IRQHandler ; DMA1 Channel 2
+ DCD DMA1_Channel3_IRQHandler ; DMA1 Channel 3
+ DCD DMA1_Channel4_IRQHandler ; DMA1 Channel 4
+ DCD DMA1_Channel5_IRQHandler ; DMA1 Channel 5
+ DCD DMA1_Channel6_IRQHandler ; DMA1 Channel 6
+ DCD DMA1_Channel7_IRQHandler ; DMA1 Channel 7
+ DCD ADC1_IRQHandler ; ADC1
+ DCD CAN1_TX_IRQHandler ; CAN1 TX
+ DCD CAN1_RX0_IRQHandler ; CAN1 RX0
+ DCD CAN1_RX1_IRQHandler ; CAN1 RX1
+ DCD CAN1_SCE_IRQHandler ; CAN1 SCE
+ DCD EXTI9_5_IRQHandler ; External Line[9:5]s
+ DCD TIM1_BRK_TIM15_IRQHandler ; TIM1 Break and TIM15
+ DCD TIM1_UP_TIM16_IRQHandler ; TIM1 Update and TIM16
+ DCD TIM1_TRG_COM_IRQHandler ; TIM1 Trigger and Commutation
+ DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare
+ DCD TIM2_IRQHandler ; TIM2
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD I2C1_EV_IRQHandler ; I2C1 Event
+ DCD I2C1_ER_IRQHandler ; I2C1 Error
+ DCD I2C2_EV_IRQHandler ; I2C2 Event
+ DCD I2C2_ER_IRQHandler ; I2C2 Error
+ DCD SPI1_IRQHandler ; SPI1
+ DCD SPI2_IRQHandler ; SPI2
+ DCD USART1_IRQHandler ; USART1
+ DCD USART2_IRQHandler ; USART2
+ DCD USART3_IRQHandler ; USART3
+ DCD EXTI15_10_IRQHandler ; External Line[15:10]
+ DCD RTC_Alarm_IRQHandler ; RTC Alarm (A and B) through EXTI Line
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD SDMMC1_IRQHandler ; SDMMC1
+ DCD 0 ; Reserved
+ DCD SPI3_IRQHandler ; SPI3
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD TIM6_DAC_IRQHandler ; TIM6 and DAC1&2 underrun errors
+ DCD TIM7_IRQHandler ; TIM7
+ DCD DMA2_Channel1_IRQHandler ; DMA2 Channel 1
+ DCD DMA2_Channel2_IRQHandler ; DMA2 Channel 2
+ DCD DMA2_Channel3_IRQHandler ; DMA2 Channel 3
+ DCD DMA2_Channel4_IRQHandler ; DMA2 Channel 4
+ DCD DMA2_Channel5_IRQHandler ; DMA2 Channel 5
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD COMP_IRQHandler ; COMP Interrupt
+ DCD LPTIM1_IRQHandler ; LP TIM1 interrupt
+ DCD LPTIM2_IRQHandler ; LP TIM2 interrupt
+ DCD 0 ; Reserved
+ DCD DMA2_Channel6_IRQHandler ; DMA2 Channel 6
+ DCD DMA2_Channel7_IRQHandler ; DMA2 Channel 7
+ DCD LPUART1_IRQHandler ; LP UART1 interrupt
+ DCD QUADSPI_IRQHandler ; Quad SPI global interrupt
+ DCD I2C3_EV_IRQHandler ; I2C3 event
+ DCD I2C3_ER_IRQHandler ; I2C3 error
+ DCD SAI1_IRQHandler ; Serial Audio Interface 1 global interrupt
+ DCD 0 ; Reserved
+ DCD SWPMI1_IRQHandler ; Serial Wire Interface 1 global interrupt
+ DCD TSC_IRQHandler ; Touch Sense Controller global interrupt
+ DCD 0 ; Reserved
+ DCD 0 ; Reserved
+ DCD RNG_IRQHandler ; RNG global interrupt
+ DCD FPU_IRQHandler ; FPU
+ DCD CRS_IRQHandler ; CRS interrupt
+
+__Vectors_End
+
+__Vectors_Size EQU __Vectors_End - __Vectors
+
+ AREA |.text|, CODE, READONLY
+
+; Reset handler
+Reset_Handler PROC
+ EXPORT Reset_Handler [WEAK]
+ IMPORT SystemInit
+ IMPORT __main
+
+ LDR R0, =SystemInit
+ BLX R0
+ LDR R0, =__main
+ BX R0
+ ENDP
+
+; Dummy Exception Handlers (infinite loops which can be modified)
+
+NMI_Handler PROC
+ EXPORT NMI_Handler [WEAK]
+ B .
+ ENDP
+HardFault_Handler\
+ PROC
+ EXPORT HardFault_Handler [WEAK]
+ B .
+ ENDP
+MemManage_Handler\
+ PROC
+ EXPORT MemManage_Handler [WEAK]
+ B .
+ ENDP
+BusFault_Handler\
+ PROC
+ EXPORT BusFault_Handler [WEAK]
+ B .
+ ENDP
+UsageFault_Handler\
+ PROC
+ EXPORT UsageFault_Handler [WEAK]
+ B .
+ ENDP
+SVC_Handler PROC
+ EXPORT SVC_Handler [WEAK]
+ B .
+ ENDP
+DebugMon_Handler\
+ PROC
+ EXPORT DebugMon_Handler [WEAK]
+ B .
+ ENDP
+PendSV_Handler PROC
+ EXPORT PendSV_Handler [WEAK]
+ B .
+ ENDP
+SysTick_Handler PROC
+ EXPORT SysTick_Handler [WEAK]
+ B .
+ ENDP
+
+Default_Handler PROC
+
+ EXPORT WWDG_IRQHandler [WEAK]
+ EXPORT PVD_PVM_IRQHandler [WEAK]
+ EXPORT TAMP_STAMP_IRQHandler [WEAK]
+ EXPORT RTC_WKUP_IRQHandler [WEAK]
+ EXPORT FLASH_IRQHandler [WEAK]
+ EXPORT RCC_IRQHandler [WEAK]
+ EXPORT EXTI0_IRQHandler [WEAK]
+ EXPORT EXTI1_IRQHandler [WEAK]
+ EXPORT EXTI2_IRQHandler [WEAK]
+ EXPORT EXTI3_IRQHandler [WEAK]
+ EXPORT EXTI4_IRQHandler [WEAK]
+ EXPORT DMA1_Channel1_IRQHandler [WEAK]
+ EXPORT DMA1_Channel2_IRQHandler [WEAK]
+ EXPORT DMA1_Channel3_IRQHandler [WEAK]
+ EXPORT DMA1_Channel4_IRQHandler [WEAK]
+ EXPORT DMA1_Channel5_IRQHandler [WEAK]
+ EXPORT DMA1_Channel6_IRQHandler [WEAK]
+ EXPORT DMA1_Channel7_IRQHandler [WEAK]
+ EXPORT ADC1_IRQHandler [WEAK]
+ EXPORT CAN1_TX_IRQHandler [WEAK]
+ EXPORT CAN1_RX0_IRQHandler [WEAK]
+ EXPORT CAN1_RX1_IRQHandler [WEAK]
+ EXPORT CAN1_SCE_IRQHandler [WEAK]
+ EXPORT EXTI9_5_IRQHandler [WEAK]
+ EXPORT TIM1_BRK_TIM15_IRQHandler [WEAK]
+ EXPORT TIM1_UP_TIM16_IRQHandler [WEAK]
+ EXPORT TIM1_TRG_COM_IRQHandler [WEAK]
+ EXPORT TIM1_CC_IRQHandler [WEAK]
+ EXPORT TIM2_IRQHandler [WEAK]
+ EXPORT I2C1_EV_IRQHandler [WEAK]
+ EXPORT I2C1_ER_IRQHandler [WEAK]
+ EXPORT I2C2_EV_IRQHandler [WEAK]
+ EXPORT I2C2_ER_IRQHandler [WEAK]
+ EXPORT SPI1_IRQHandler [WEAK]
+ EXPORT SPI2_IRQHandler [WEAK]
+ EXPORT USART1_IRQHandler [WEAK]
+ EXPORT USART2_IRQHandler [WEAK]
+ EXPORT USART3_IRQHandler [WEAK]
+ EXPORT EXTI15_10_IRQHandler [WEAK]
+ EXPORT RTC_Alarm_IRQHandler [WEAK]
+ EXPORT SDMMC1_IRQHandler [WEAK]
+ EXPORT SPI3_IRQHandler [WEAK]
+ EXPORT TIM6_DAC_IRQHandler [WEAK]
+ EXPORT TIM7_IRQHandler [WEAK]
+ EXPORT DMA2_Channel1_IRQHandler [WEAK]
+ EXPORT DMA2_Channel2_IRQHandler [WEAK]
+ EXPORT DMA2_Channel3_IRQHandler [WEAK]
+ EXPORT DMA2_Channel4_IRQHandler [WEAK]
+ EXPORT DMA2_Channel5_IRQHandler [WEAK]
+ EXPORT COMP_IRQHandler [WEAK]
+ EXPORT LPTIM1_IRQHandler [WEAK]
+ EXPORT LPTIM2_IRQHandler [WEAK]
+ EXPORT DMA2_Channel6_IRQHandler [WEAK]
+ EXPORT DMA2_Channel7_IRQHandler [WEAK]
+ EXPORT LPUART1_IRQHandler [WEAK]
+ EXPORT QUADSPI_IRQHandler [WEAK]
+ EXPORT I2C3_EV_IRQHandler [WEAK]
+ EXPORT I2C3_ER_IRQHandler [WEAK]
+ EXPORT SAI1_IRQHandler [WEAK]
+ EXPORT SWPMI1_IRQHandler [WEAK]
+ EXPORT TSC_IRQHandler [WEAK]
+ EXPORT RNG_IRQHandler [WEAK]
+ EXPORT FPU_IRQHandler [WEAK]
+ EXPORT CRS_IRQHandler [WEAK]
+
+WWDG_IRQHandler
+PVD_PVM_IRQHandler
+TAMP_STAMP_IRQHandler
+RTC_WKUP_IRQHandler
+FLASH_IRQHandler
+RCC_IRQHandler
+EXTI0_IRQHandler
+EXTI1_IRQHandler
+EXTI2_IRQHandler
+EXTI3_IRQHandler
+EXTI4_IRQHandler
+DMA1_Channel1_IRQHandler
+DMA1_Channel2_IRQHandler
+DMA1_Channel3_IRQHandler
+DMA1_Channel4_IRQHandler
+DMA1_Channel5_IRQHandler
+DMA1_Channel6_IRQHandler
+DMA1_Channel7_IRQHandler
+ADC1_IRQHandler
+CAN1_TX_IRQHandler
+CAN1_RX0_IRQHandler
+CAN1_RX1_IRQHandler
+CAN1_SCE_IRQHandler
+EXTI9_5_IRQHandler
+TIM1_BRK_TIM15_IRQHandler
+TIM1_UP_TIM16_IRQHandler
+TIM1_TRG_COM_IRQHandler
+TIM1_CC_IRQHandler
+TIM2_IRQHandler
+I2C1_EV_IRQHandler
+I2C1_ER_IRQHandler
+I2C2_EV_IRQHandler
+I2C2_ER_IRQHandler
+SPI1_IRQHandler
+SPI2_IRQHandler
+USART1_IRQHandler
+USART2_IRQHandler
+USART3_IRQHandler
+EXTI15_10_IRQHandler
+RTC_Alarm_IRQHandler
+SDMMC1_IRQHandler
+SPI3_IRQHandler
+TIM6_DAC_IRQHandler
+TIM7_IRQHandler
+DMA2_Channel1_IRQHandler
+DMA2_Channel2_IRQHandler
+DMA2_Channel3_IRQHandler
+DMA2_Channel4_IRQHandler
+DMA2_Channel5_IRQHandler
+COMP_IRQHandler
+LPTIM1_IRQHandler
+LPTIM2_IRQHandler
+DMA2_Channel6_IRQHandler
+DMA2_Channel7_IRQHandler
+LPUART1_IRQHandler
+QUADSPI_IRQHandler
+I2C3_EV_IRQHandler
+I2C3_ER_IRQHandler
+SAI1_IRQHandler
+SWPMI1_IRQHandler
+TSC_IRQHandler
+RNG_IRQHandler
+FPU_IRQHandler
+CRS_IRQHandler
+
+ B .
+
+ ENDP
+
+ ALIGN
+
+;*******************************************************************************
+; User Stack and Heap initialization
+;*******************************************************************************
+ IF :DEF:__MICROLIB
+
+ EXPORT __initial_sp
+ EXPORT __heap_base
+ EXPORT __heap_limit
+
+ ELSE
+
+ IMPORT __use_two_region_memory
+ EXPORT __user_initial_stackheap
+
+__user_initial_stackheap
+
+ LDR R0, = Heap_Mem
+ LDR R1, =(Stack_Mem + Stack_Size)
+ LDR R2, = (Heap_Mem + Heap_Size)
+ LDR R3, = Stack_Mem
+ BX LR
+
+ ALIGN
+
+ ENDIF
+
+ END
+
+;************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE*****
diff --git a/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.c b/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.c
new file mode 100644
index 00000000..588d18f3
--- /dev/null
+++ b/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.c
@@ -0,0 +1,424 @@
+/*----------------------------------------------------------------------------
+ * Tencent is pleased to support the open source community by making TencentOS
+ * available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ * If you have downloaded a copy of the TencentOS binary from Tencent, please
+ * note that the TencentOS binary is licensed under the BSD 3-Clause License.
+ *
+ * If you have downloaded a copy of the TencentOS source code from Tencent,
+ * please note that TencentOS source code is licensed under the BSD 3-Clause
+ * License, except for the third-party components listed below which are
+ * subject to different license terms. Your integration of TencentOS into your
+ * own projects may require compliance with the BSD 3-Clause License, as well
+ * as the other licenses applicable to the third-party components included
+ * within TencentOS.
+ *---------------------------------------------------------------------------*/
+#include "bc35_28_95_lwm2m.h"
+#include "tos.h"
+#include "tos_at.h"
+#include "tos_hal.h"
+#include "sal_module_wrapper.h"
+
+#include "stdio.h"
+#include "stdbool.h"
+#include "ctype.h"
+
+static char __num2hex(uint8_t num)
+{
+ if (num <= 0x9) {
+ return num + '0';
+ }
+
+ if ((0xA <= num) && (num <= 0xF)) {
+ return num - 0xA + 'A';
+ }
+
+ return (char)-1;
+}
+
+void __hex2str(uint8_t *in, char *out, int len)
+{
+ int i = 0;
+
+ for (i = 0; i < len; ++i) {
+ out[i * 2] = __num2hex(in[i] >> 4);
+ out[i * 2 + 1] = __num2hex(in[i] & 0x0F);
+ }
+ out[2 * len] = '\0';
+}
+
+static int bc35_28_95_reset(void){
+ int try = 0;
+ at_echo_t echo;
+
+ tos_at_echo_create(&echo, NULL, 0, "Neul");
+ while (try++ < 10) {
+ tos_at_cmd_exec(&echo, 6000, "AT+NRB\r\n");
+ if (echo.status == AT_ECHO_STATUS_EXPECT) {
+ printf("wait for bcxx reboot!\n");
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int bc35_28_95_echo_close(void)
+{
+ at_echo_t echo;
+
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ tos_at_cmd_exec(&echo, 1000, "ATE0\r\n");
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ return -1;
+}
+
+static int bc35_28_95_check_cfun(void)
+{
+ int try = 0;
+ at_echo_t echo;
+
+ tos_at_echo_create(&echo, NULL, 0, "+CFUN:1");
+ while (try++ < 10) {
+ tos_at_cmd_exec(&echo, 1000, "AT+CFUN?\r\n");
+ if (echo.status == AT_ECHO_STATUS_OK || echo.status == AT_ECHO_STATUS_EXPECT) {
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int bc35_28_95_cfun_set(char mode)
+{
+ int try = 0;
+ at_echo_t echo;
+
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ while (try++ < 10) {
+ if(mode){
+ tos_at_cmd_exec(&echo, 1000, "AT+CFUN=1\r\n");
+ }
+ else{
+ tos_at_cmd_exec(&echo, 1000, "AT+CFUN=0\r\n");
+ }
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int bc35_28_95_net_set(char mode)
+{
+ int try = 0;
+ at_echo_t echo;
+
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ while (try++ < 10) {
+ if(mode){
+ tos_at_cmd_exec(&echo, 1000, "AT+CGATT=1\r\n");
+ }
+ else{
+ tos_at_cmd_exec(&echo, 1000, "AT+CGATT=0\r\n");
+ }
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int bc35_28_95_check_net(void)
+{
+ int try = 0;
+ at_echo_t echo;
+
+ tos_at_echo_create(&echo, NULL, 0, "+CGATT:1");
+ while (try++ < 10) {
+ tos_at_cmd_exec(&echo, 1000, "AT+CGATT?\r\n");
+ if (echo.status == AT_ECHO_STATUS_EXPECT) {
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int bc35_28_95_signal_quality_check(void)
+{
+ int rssi, ber;
+ at_echo_t echo;
+ char echo_buffer[32], *str;
+
+ tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), NULL);
+ tos_at_cmd_exec(&echo, 1000, "AT+CSQ\r\n");
+ if (echo.status != AT_ECHO_STATUS_OK) {
+ return -1;
+ }
+
+ str = strstr(echo.buffer, "+CSQ:");
+ sscanf(str, "+CSQ:%d,%d", &rssi, &ber);
+ if (rssi == 99) {
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bc35_28_95_nband_set(char band){
+ at_echo_t echo;
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ tos_at_cmd_exec(&echo, 1000, "AT+NBAND=%d\r\n",band);
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ return -1;
+}
+static int bc35_28_95_auto_report(char report){
+ at_echo_t echo;
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ tos_at_cmd_exec(&echo, 1000, "AT+NNMI=%d\r\n",report);
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ return -1;
+}
+
+
+static int bc35_28_95_autoconnect_config(char mode)
+{
+ int try = 0;
+ at_echo_t echo;
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ while (try++ < 10) {
+ if(mode){
+ tos_at_cmd_exec(&echo, 1000, "AT+NCONFIG=AUTOCONNECT,TRUE\r\n");
+ }
+ else{
+ tos_at_cmd_exec(&echo, 1000, "AT+NCONFIG=AUTOCONNECT,FALSE\r\n");
+ }
+ if(echo.status == AT_ECHO_STATUS_OK){
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int bc35_28_95_print_IMEI(void) {
+ at_echo_t echo;
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ tos_at_cmd_exec(&echo, 1000, "AT+CGSN=1\r\n");
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ return -1;
+
+}
+static int bc35_28_95_print_CIMI(void) {
+ at_echo_t echo;
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ tos_at_cmd_exec(&echo, 1000, "AT+CIMI\r\n");
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ return -1;
+
+}
+static int bc35_28_95_print_NBAND(void) {
+ at_echo_t echo;
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ tos_at_cmd_exec(&echo, 1000, "AT+NBAND=?\r\n");
+ if (echo.status == AT_ECHO_STATUS_OK) {
+ return 0;
+ }
+ return -1;
+
+}
+
+static int bc35_28_95_lwm2m_init(void)
+{
+ printf("Init BC95_28_95 ...wait reset!\n" );
+ at_delay_ms(5000);
+ if (bc35_28_95_echo_close() != 0) {
+ printf("echo close FAILED\n");
+ return -1;
+ }
+ if(bc35_28_95_autoconnect_config(0)!=0){
+ printf("autoconnect false FAILED\n");
+ return -1;
+ };
+ if (bc35_28_95_cfun_set(0) != 0) {
+ printf("close_cfun FAILED\n");
+ return -1;
+ }
+ if(bc35_28_95_nband_set(5)!=0){
+ printf("nband_set FAILED\n");
+ return -1;
+ }
+
+ printf("Init bc35_28_95 Done\n" );
+ return 0;
+}
+
+static int bc35_28_95_lwm2m_connect(const char *ip, const char *port, sal_proto_t proto)
+{
+ int id, try = 0, is_connected = 0;
+ at_echo_t echo;
+ char echo_buffer[32];
+
+ tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), NULL);
+ tos_at_cmd_exec(&echo, 2000, "AT+NCDP=%s,%s\r\n,",ip,port);
+ if (echo.status != AT_ECHO_STATUS_OK) {
+ return -1;
+ }
+
+ if(bc35_28_95_reset()!=0){
+ printf("reset FAILED\n");
+ return -1;
+ }
+ tos_task_delay(1000);
+ bc35_28_95_check_cfun();
+ bc35_28_95_cfun_set(1);
+ bc35_28_95_net_set(1);
+ bc35_28_95_autoconnect_config(1);
+ bc35_28_95_auto_report(1);
+ bc35_28_95_print_IMEI();
+ bc35_28_95_print_CIMI();
+ bc35_28_95_print_NBAND();
+ if (bc35_28_95_signal_quality_check() != 0) {
+ printf("check csq FAILED\n");
+ return -1;
+ }
+ while (try++ < 10) {
+ if (bc35_28_95_check_net()==0){
+ is_connected = 1;
+ break;
+ }
+ tos_task_delay(1000);
+ continue;
+ }
+ if(is_connected){
+ id=0;
+ sscanf(echo.buffer, "%d", &id);
+ id = tos_at_channel_alloc_id(id, ip, port);
+ if (id == -1) {
+ return -1;
+ }
+ }
+ else{
+ return -1;
+ }
+ return id;
+}
+
+static int bc35_28_95_lwm2m_send(int id, const void *buf, size_t len)
+{
+ char *str_buf = NULL;
+ at_echo_t echo;
+
+ if (tos_at_global_lock_pend() != 0) {
+ return -1;
+ }
+ str_buf = tos_mmheap_calloc(2 * len + 1, sizeof(char));
+ if (!str_buf) {
+ tos_at_global_lock_post();
+ return -1;
+ }
+ __hex2str((uint8_t *)buf, str_buf, len);
+ tos_at_echo_create(&echo, NULL, 0, NULL);
+ tos_at_cmd_exec(&echo, 1000,
+ "AT+NMGS=%d,%s\r\n",
+ len, str_buf);
+ tos_mmheap_free(str_buf);
+ if (echo.status != AT_ECHO_STATUS_OK) {
+ tos_at_global_lock_post();
+ return -1;
+ }
+ tos_at_global_lock_post();
+ return len;
+}
+
+__STATIC__ uint8_t incoming_data_buffer[1024];
+
+__STATIC__ void bc35_28_95_lwm2m_incoming_data_process(void)
+{
+ uint8_t data;
+ int channel_id = 0, data_len = 0;
+
+ /*
+ +NNMI:2,aabb\r\n
+ 2: Length
+ aabb: data
+ */
+
+ while (1) {
+ if (tos_at_uart_read(&data, 1) != 1) {
+ return;
+ }
+
+ if (data == ',') {
+ break;
+ }
+ data_len = data_len * 10 + (data - '0');
+ }
+
+
+ if (data_len > sizeof(incoming_data_buffer)/2) {
+ data_len = sizeof(incoming_data_buffer)/2;
+ }
+
+ if (tos_at_uart_read(incoming_data_buffer, data_len*2) != data_len*2) {
+ return;
+ }
+
+ tos_at_channel_write(channel_id, incoming_data_buffer, data_len*2);
+}
+
+at_event_t bc35_28_95_at_event[] = {
+ { "+NNMI:", bc35_28_95_lwm2m_incoming_data_process },
+};
+
+static int bc35_28_95_lwm2m_recv_timeout(int id, void *buf, size_t len, uint32_t timeout)
+{
+ return tos_at_channel_read_timed(id, buf, len, timeout);
+}
+
+static int bc35_28_95_lwm2m_recv(int id, void *buf, size_t len)
+{
+ return bc35_28_95_lwm2m_recv_timeout(id, buf, len, (uint32_t)4000);
+}
+
+static int bc35_28_95_lwm2m_close(int id)
+{
+ tos_at_channel_free(id);
+ return 0;
+}
+
+sal_module_t sal_module_bc35_28_95_lwm2m = {
+ .init = bc35_28_95_lwm2m_init,
+ .connect = bc35_28_95_lwm2m_connect,
+ .send = bc35_28_95_lwm2m_send,
+ .recv_timeout = bc35_28_95_lwm2m_recv_timeout,
+ .recv = bc35_28_95_lwm2m_recv,
+ .close = bc35_28_95_lwm2m_close,
+ .parse_domain = NULL,
+};
+
+int bc35_28_95_sal_lwm2m_init(hal_uart_port_t uart_port)
+{
+ if (tos_at_init(uart_port, bc35_28_95_at_event,
+ sizeof(bc35_28_95_at_event) / sizeof(bc35_28_95_at_event[0])) != 0) {
+ return -1;
+ }
+
+ if (tos_sal_module_register(&sal_module_bc35_28_95_lwm2m) != 0) {
+ return -1;
+ }
+
+ if (tos_sal_module_init() != 0) {
+ return -1;
+ }
+
+ return 0;
+}
diff --git a/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.h b/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.h
new file mode 100644
index 00000000..082b1042
--- /dev/null
+++ b/devices/bc35_28_95_lwm2m/bc35_28_95_lwm2m.h
@@ -0,0 +1,26 @@
+/*----------------------------------------------------------------------------
+ * Tencent is pleased to support the open source community by making TencentOS
+ * available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ * If you have downloaded a copy of the TencentOS binary from Tencent, please
+ * note that the TencentOS binary is licensed under the BSD 3-Clause License.
+ *
+ * If you have downloaded a copy of the TencentOS source code from Tencent,
+ * please note that TencentOS source code is licensed under the BSD 3-Clause
+ * License, except for the third-party components listed below which are
+ * subject to different license terms. Your integration of TencentOS into your
+ * own projects may require compliance with the BSD 3-Clause License, as well
+ * as the other licenses applicable to the third-party components included
+ * within TencentOS.
+ *---------------------------------------------------------------------------*/
+
+#ifndef __BC35_28_95_LWM2M_H__
+#define __BC35_28_95_LWM2M_H__
+
+#include "tos_at.h"
+
+int bc35_28_95_sal_lwm2m_init(hal_uart_port_t uart_port);
+
+#endif /* __BC35_28_95_LWM2M_H__ */
+
diff --git a/examples/nb-iot_demo/nb-iot_example.c b/examples/nb-iot_demo/nb-iot_example.c
new file mode 100644
index 00000000..eae8b22d
--- /dev/null
+++ b/examples/nb-iot_demo/nb-iot_example.c
@@ -0,0 +1,47 @@
+#include "bc35_28_95_lwm2m.h"
+#include "mcu_init.h"
+#include "sal_module_wrapper.h"
+#include "cmsis_os.h"
+
+
+#define NB_IoT_TEST_TASK0_STK_SIZE 1024
+void nb_iot_demo(void);
+osThreadDef(nb_iot_demo, osPriorityNormal, 1, NB_IoT_TEST_TASK0_STK_SIZE);
+
+int socket_id=-1;
+#define RECV_LEN 1024
+uint8_t recv_data[RECV_LEN];
+
+void nb_iot_demo(void)
+{
+ int recv_len = -1;
+ int bc35_28_95_sal_lwm2m_init(hal_uart_port_t uart_port);
+ bc35_28_95_sal_lwm2m_init(HAL_UART_PORT_0);
+ socket_id = tos_sal_module_connect("49.4.85.232","5683",TOS_SAL_PROTO_UDP);
+ if(socket_id!=-1){
+ printf("connect to clound first time and need to report!\n");
+ }
+ else{
+ printf("udp connect success! fd: %d\n", socket_id);
+ }
+ while (1) {
+ tos_sal_module_send(socket_id, (const void*)"22", strlen("22"));
+
+ recv_len = tos_sal_module_recv(socket_id, recv_data, sizeof(recv_data));
+ if (recv_len < 0) {
+ printf("task receive error\n");
+ } else if (recv_len == 0) {
+ printf("task receive none\n");
+ } else {
+ recv_data[recv_len] = 0;
+ printf("task: receive len: %d\nmsg from remote: %s\n", recv_len, recv_data);
+ }
+
+ tos_sleep_ms(2000);
+ }
+}
+
+void application_entry(void *arg)
+{
+ osThreadCreate(osThread(nb_iot_demo), NULL);
+}