SWRA466E February   2015  – August 2024 CC1310 , CC1310 , CC1311P3 , CC1311P3 , CC1311R3 , CC1311R3 , CC1312PSIP , CC1312PSIP , CC1312R7 , CC1312R7 , CC1314R10 , CC1314R10 , CC1352P , CC1352P , CC1352P7 , CC1352P7 , CC1352R , CC1352R , CC1354P10 , CC1354P10 , CC1354R10 , CC1354R10 , CC2538 , CC2538 , CC2620 , CC2620 , CC2630 , CC2630 , CC2640 , CC2640 , CC2640R2F , CC2640R2F , CC2640R2F-Q1 , CC2640R2F-Q1 , CC2642R , CC2642R , CC2642R-Q1 , CC2642R-Q1 , CC2650 , CC2650 , CC2650MODA , CC2650MODA , CC2651P3 , CC2651P3 , CC2651R3 , CC2651R3 , CC2651R3SIPA , CC2651R3SIPA , CC2652P , CC2652P , CC2652P7 , CC2652P7 , CC2652PSIP , CC2652PSIP , CC2652R , CC2652R , CC2652R7 , CC2652R7 , CC2652RB , CC2652RB , CC2652RSIP , CC2652RSIP , CC2674R10 , CC2674R10

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2ROM Bootloader
    1. 2.1 Configuring the Bootloader
      1. 2.1.1 CC2538
      2. 2.1.2 CC13x0, CC26x0
      3. 2.1.3 CC13x1x3, CC26x1x3
      4. 2.1.4 CC13x2, CC26x2
      5. 2.1.5 CC13x4, CC26x4
    2. 2.2 Communication Protocol
      1. 2.2.1 ACK or NACK
    3. 2.3 Interface Configuration
      1. 2.3.1 Hardware Pins
      2. 2.3.2 UART Configuration
      3. 2.3.3 Establishing Communication
      4. 2.3.4 Status Command
  6. 3Serial Bootloader Library (SBL)
    1. 3.1 SBL Return Values
    2. 3.2 SBL API
  7. 4Example Project
    1. 4.1 Hardware Setup
      1. 4.1.1 LaunchPad™ Development Kit Virtual COM Port
      2. 4.1.2 SmartRF06EB Virtual COM Port
        1. 4.1.2.1 External Serial Interface
      3. 4.1.3 Bootloader Backdoor
    2. 4.2 Software Setup
      1. 4.2.1 Device Type
      2. 4.2.2 Baud Rate
    3. 4.3 Program Flow
      1. 4.3.1 Enumerate COM Ports
      2. 4.3.2 Create Device
      3. 4.3.3 Connect
      4. 4.3.4 Erase Flash Range
      5. 4.3.5 Write Flash Range
      6. 4.3.6 Calculate CRC32
      7. 4.3.7 Reset
  8. 5References
  9. 6Revision History

2.1.5 CC13x4, CC26x4

The customer configuration area for CC13x4 and CC26x4 is called CCFG and is located outside of the main flash. The CC13x4 and CC26x4 devices all have a flash size of 1MB. The CC13x4 and CC26x4 devices CCFG are memory mapped with read access to address 0x5000.0000. A 32-bit field in the CCFG configures the bootloader and backdoor functionality (byte offset 0x0028). The CCFG can be modified through the Device Configuration view in SysConfig when using Code Composer Studio.

Table 2-6 shows the structure of the bootloader configuration field. The configuration structure is little endian, meaning that the least significant byte is at the lowest address.

Table 2-6 CC13x4, CC26x4 CCFG: BL_CONFIG Encoding
Bit Field Value Description Byte
Offset		 Default
Value
31:24 BOOTLOADER_ENABLE Enable and disable bootloader 0x002B 0xC5
0xC5 Bootloader enabled
Any other value Bootloader disabled
23:17 RESERVED 0 0x002A 0b111 1111
16 BL_LEVEL Sets the active level of the selected pin 0x002A 1
0 Active low
1 Active high
15:8 BL_PIN_NUMBER(1) The number of the I/O pin that is level checked if the bootloader backdoor is enabled. 0x0029 0xFF
7:0 BL_ENABLE Enables and disables the bootloader backdoor 0x0028 0xFF
0xC5 Bootloader enabled
Any other value Bootloader disabled
(1) For the CC13x2, CC26x2 device family, the number of DIOs available for the BL_PIN_NUMBER is limited. Refer to your specific device’s Errata (advisory IOC_01) for more information. This does not apply to the CC1312PSIP, CC2652xSIP, CC2652RB devices.