Hi,

I am having a WICED BCM943362 board. I am using it for communicating with an external device on RS 485 (MODBUS RTU Protocol) through UART. The IC used for converting the RS485 voltage level to CMOS (3.3v) is SN75HVD12  Half duplex tranceiver IC.

I am sending command to the device through UART and the device responds. This is happening properly for sometime. But after sometime I am getting All Zero Response from the device . For example

TX (command)                   : 01 03 00 64 00 02 85 d4

RX (Response from device) : 01 03 04 00 00 00 00 fa 33

TX (command)                   : 01 03 00 64 00 02 85 d4

RX (Response from device) : 01 03 04 00 00 00 00 fa 33

TX (command)                   : 01 03 00 64 00 02 85 d4

RX (Response from device) : 00 00 00 00 00 00 00 00 00

TX (command)                   : 01 03 00 64 00 02 85 d4

RX (Response from device) : 01 03 04 00 00 00 00 fa 33

TX (command)                   : 01 03 00 64 00 02 85 d4

RX (Response from device) : 00 00 00 00 00 00 00 00 00

I am pretty sure the device is responding properly (there is Indication that data is sent). I suspect there is some problem in UART communication. If there problem with the code I have written, then I should not get correct response all the time. But why this inconsistent behaviour?

Please help me in this regard.

Thanks.

Hi All,

We want to implement more efficient uart transferring.

In case wiced_uart_receive_bytes() timeout   (  ex. we expect 128 bytes input in 100 ms but only 64 bytes received)

How can we get that actually received number with current API ?

Thanks,

Sam

hello ,

at WICED-SDK-3.1.2\Wiced-SDK\tools\create_dct\generate_factory_reset_dct.pl,you can see picture ,

how can i use it to generate factory reset dct，the generate_factory_reset_dct.pl program as below:

the pad_dct.pl program as below:

I never use perl ,help me ...

Thanks!!

Xinming

I am trying to flash snip/ota_fr on BCM943362WCD4 but I am getting the following error, what could be the problem?

snip.ota_fr-BCM943362WCD4-FreeRTOS-LwIP download download_apps run WIPE=1

Making .gdbinit

Building Bootloader

Building Serial Flash Loader App

Compiling App_SFlash_write

Compiling Platform_BCM943362WCD4

Compiling WWD_NoNS_Interface

Compiling Lib_SPI_Flash_Library_BCM943362WCD4

Compiling WWD_for_SDIO_NoOS

Compiling common_GCC

Compiling STM32F2xx_Peripheral_Drivers

Compiling Lib_Ring_Buffer

Making waf_sflash_write-NoOS-NoNS-BCM943362WCD4-SDIO.elf

waf_sflash_write-NoOS-NoNS-BCM943362WCD4-SDIO

----------------------------------|---------|---------|

                                  |         |  Static |

              Module              |  Flash  |   RAM   |

----------------------------------+---------+---------|

App                               |       0 |   21134 |

Host MCU-family library           |       0 |   12468 |

Interrupt Vectors                 |       0 |     424 |

libc                              |       0 |     548 |

platform                          |       0 |     956 |

Ring_Buffer                       |       0 |      36 |

SPI_Flash_Library_BCM943362WCD4   |       0 |     748 |

Startup Stack & Link Script fill  |       0 |     486 |

WWD                               |       0 |     144 |

----------------------------------+---------+---------|

TOTAL (bytes)                     |       0 |   36944 |

----------------------------------|---------|---------|

Making waf_sflash_write-NoOS-NoNS-BCM943362WCD4-SDIO.bin

Finished Building Bootloader

Build complete

Finished Building Serial Flash Loader App

Compiling App_OTA_fr_run

Compiling Platform_BCM943362WCD4

Compiling FreeRTOS

Compiling LwIP

Compiling WICED

Compiling Lib_OTA_Server

Compiling Lib_SPI_Flash_Library_BCM943362WCD4

Compiling WWD_FreeRTOS_Interface_BCM943362WCD4

Compiling WICED_FreeRTOS_Interface

Compiling WWD_LwIP_Interface_FreeRTOS

Compiling WICED_LwIP_Interface

Compiling Supplicant_BESL

Compiling Lib_HTTP_Server

Compiling Lib_DNS_Redirect_Daemon

Compiling Lib_DNS

Compiling WWD_for_SDIO_FreeRTOS

Compiling Wiced_Network_LwIP_FreeRTOS

Compiling Lib_DHCP_Server

Compiling Lib_base64

Compiling common_GCC

Compiling STM32F2xx_Peripheral_Drivers

Compiling Lib_Ring_Buffer

Making snip_ota_fr-BCM943362WCD4-FreeRTOS-LwIP.elf

Making snip_ota_fr-BCM943362WCD4-FreeRTOS-LwIP.bin

snip_ota_fr-BCM943362WCD4-FreeRTOS-LwIP

----------------------------------|---------|---------|

                                  |         |  Static |

              Module              |  Flash  |   RAM   |

----------------------------------+---------+---------|

App                               |     293 |       0 |

base64                            |     520 |       0 |

DHCP_Server                       |    1520 |     132 |

DNS                               |      64 |      44 |

FreeRTOS                          |    4719 |     416 |

Host MCU-family library           |   14980 |    2732 |

Interrupt Vectors                 |     424 |       0 |

libc                              |   33975 |    3136 |

LwIP                              |   27958 |    2107 |

Networking                        |    3295 |     327 |

OTA_Server                        |    8203 |     200 |

Packet Buffers                    |       0 |   26244 |

platform                          |    1004 |      56 |

RAM Initialisation                |    2472 |       0 |

resources                         |      16 |       0 |

Ring_Buffer                       |      92 |       0 |

SPI_Flash_Library_BCM943362WCD4   |     636 |       0 |

Startup Stack & Link Script fill  |      59 |      26 |

Supplicant - BESL                 |   89984 |     516 |

Wi-Fi Firmware                    |  210412 |       0 |

WICED                             |    3329 |      92 |

Wiced_RO_FS                       |     566 |       0 |

WWD                               |   11251 |     168 |

----------------------------------+---------+---------|

TOTAL (bytes)                     |  413300 |   36196 |

----------------------------------|---------|---------|

Creating Filesystem

Downloading Bootloader ...

Building apps lookup table

No changes detected

Downloading DCT ...

No changes detected

Downloading Application ...

Download complete

Downloading FR_APP build/snip_ota_fr-BCM943362WCD4-FreeRTOS-LwIP/binary/snip_ota_fr-BCM943362WCD4-FreeRTOS-LwIP.stripped.elf at sector 1...

tools/makefiles/wiced_apps.mk:89: recipe for target 'FR_APP_DOWNLOAD' failed

make.exe[1]: *** [FR_APP_DOWNLOAD] Error 1

Makefile:185: recipe for target 'main_app' failed

make: *** [main_app] Error 2