SWPA230A May   2017  – June 2018 CC3120 , CC3120MOD , CC3220MOD , CC3220MODA , CC3220R , CC3220S , CC3220SF

 

  1.   CC3120 and CC3220 SimpleLink™ Wi-Fi® Embedded Programming
    1.     Trademarks
    2. 1 Introduction
    3. 2 Embedded Programming Schemes
    4. 3 Setup
    5. 4 Bootloader Protocol
      1. 4.1 Overview
      2. 4.2 General Message Format
      3. 4.3 Commands
        1. 4.3.1 Get Status
        2. 4.3.2 Get Storage List
        3. 4.3.3 Raw Storage Write
        4. 4.3.4 Get Version Info
        5. 4.3.5 Raw Storage Erase
        6. 4.3.6 Get Storage Info
        7. 4.3.7 Execute from RAM
        8. 4.3.8 Switch UART to APPS MCU
        9. 4.3.9 FS Programming
      4. 4.4 Responses
        1. 4.4.1 Ack
        2. 4.4.2 Nack
        3. 4.4.3 Last Status
        4. 4.4.4 Storage List
        5. 4.4.5 Storage Info
        6. 4.4.6 Version Info
    6. 5 Embedded Programming Procedure
      1. 5.1 Overview
      2. 5.2 High-Level Flow Diagram
      3. 5.3 Image Programming in Detail
        1. 5.3.1  Step 1: Target Connection
        2. 5.3.2  Step 2: Target Detection
        3. 5.3.3  Step 3: MUX UART to the Network Processor
        4. 5.3.4  Step 4: Get SRAM Storage Info
        5. 5.3.5  Step 5: Raw Storage Erase – SRAM
        6. 5.3.6  Step 6: Raw Storage Write – SRAM
        7. 5.3.7  Step 7: Execute from RAM
        8. 5.3.8  Step 8: Get SFLASH Storage Info
        9. 5.3.9  Step 9: Raw Storage Erase – SFLASH
        10. 5.3.10 Step 10: Raw Storage Write – SFLASH
        11. 5.3.11 Step 11: FS Programming
        12. 5.3.12 Step 12: Device Reset
  2.   Revision History

3 Setup

The UART interface must be connected between the CC3120 or CC3220 device and the main processor. Only two pins are required, UART TX and UART RX. Flow control is not required.

The common configuration that applies to all chipsets follows:

  • Baud rate of 921600bps
  • 8 bits
  • No parity
  • 1 stop bit

In addition, the nHib/nReset pin is required and it must be have the ability to be temporarily pulled to GND during a reset to make the device go into bootloader mode.

For the CC3220 device, an additional SOP1 pin must be pulled up during the device reset to make the device go into bootloader mode.

QFN_programming_setup.gifFigure 1. CC3120 and CC3220 QFN Programming Setup